JP4772237B2 - Industrial belt - Google Patents

Description

【０１２９】
【表２】

【０１３０】
（織物表面に表出する経糸ナックルの差の確認）
上記の実施例２〜３および比較例１の各ドライヤーカンバスの接紙面側（ＰＳ）および反接紙面側（ＢＳ）の表面に表出する経糸ナックルの差を確認する試験を、下記の要領で行った。
【０１３１】
すなわち、実施例２、実施例３および比較例１の各ドライヤーカンバ１５０，１６０および１８０から試料を切り取り、それぞれの試料片における表面の状態を、インストロン５５６８型万能試験装置を用いて、試料片の上から圧力測定フィルム（富士プレスケール；富士写真フィルム株式会社製）を介して、加圧ヘッド（円形端面、表面積０．００２ｍ²）を、加圧力３，９２０Ｎ
（単位面積当たり１，９６０ｋＰａ）、加圧時間３０秒の加圧条件で押し付けて、圧力測定フィルムの接触点を発色させて、接紙面側および反接紙面側の表面の状況を確認した。
【０１３２】
図１３に、その試験結果を示す。
図１３において、（Ａ）は実施例２の接紙面側表面（ＰＳ）の状況、（Ｂ）は実施例２の反接紙面側（ＢＳ）の状況、（Ｃ）は実施例３の接紙面側表面（ＰＳ）の状況、（Ｄ）は実施例３の反接紙面側（ＢＳ）の状況、（Ｅ）は比較例１の接紙面側表面（ＰＳ）の状況を示したものである。なお、各図中の黒点が、表出する経糸ナックルが接触することにより発色した接触部である。また、表裏対象の織組織である比較例１では、反接紙面側表面（ＢＳ）の状況が接紙面側表面（ＰＳ）の状況とほぼ同じであったので、接紙面側表面（ＰＳ）の状況だけを示した。
【０１３３】
図１３（Ａ）および図１３（Ｃ）を図１３（Ｅ）と比較して明らかなように、実施例２（Ａ）および実施例３（Ｃ）では、比較例１（Ｅ）に比べて接紙面側表面（ＰＳ）に表出する経糸ナックルの数が緯糸方向に１／２に減少している。また、図１３（Ｂ）および図１３（Ｄ）を図１３（Ｅ）と比較すると、実施例２（Ｂ）および実施例３（Ｄ）では、比較例１（Ｅ）に比べて反接紙面側表面（ＢＳ）に表出する経糸ナックルの数が緯糸方向に１／２に減少している。
【０１３４】
このように本発明の実施例２および３では、接紙面側または、接紙面側および反接紙面側の表面に表出する経糸ナックルの数が比較例１より大幅に減少するので、汚れ物質が経糸と緯糸の交錯点付近に多く付着し経時的に堆積するのを防止することが可能となる。さらに、接紙面側または接紙面側および反接紙面側の表面に経糸ナックルが表出しない第１の経糸１２、および、反接紙面側の表面に経糸ナックルが表出しない第２の経糸１３の摩耗損傷を防止して、経糸強力の低下を防止することが可能となる。
【０１３５】
また、実施例１〜４では、経糸の密度が２９．０本／２．５４ｃｍ〜３０．０本／２．５４ｃｍに対し、緯糸の密度が１１．５本×２／２．５４ｃｍ〜１２．５本×２／２．５４ｃｍと粗くして、経糸１２，１３と緯糸２１，２２，２４，２５との交錯点を少なくした上に、太さの異なる緯糸２１，緯糸２２および緯糸２４，緯糸２５を用いて、接紙面側または、接紙面側および反接紙面側の表面に表出する経糸ナックルの数をさらに減少させたので、接紙面側および反接紙面側の表面への汚れ物質の付着が一層減少し、汚れ物質が付着しても洗浄などで容易に除去出来ることが可能となる。
【０１３６】
（摩耗量の確認）
上記の実施例２、実施例４および比較例１の各ドライヤーカンバスにおける表面の摩耗量を、以下の方法により確認した。
【０１３７】
すなわち、試験試料として、実施例２のドライヤーカンバス１５０から試料−１、実施例４のドライヤーカンバス１７０から試料−２、および比較例１のドライヤーカンバス１８０から試料−３の各試料片を、各織成布の本体部分から経糸方向を長手にして幅３０ｍｍ×長さ５００ｍｍの大きさで作成した。次に、図１４に示すように、各試料片３０３をそれぞれ、＃４００番のサンドペーパー３０２を全周に貼付した周長４００ｍｍのローラー３０１の周囲に、張力加重０．５ｋｇ／ｃｍのもとに抱き角度略９０°で、試料−１、試料−２もしくは試料−３の接紙面側がサンドペーパー３０２に接するように取り付けて、ローラー３０１を３００回／毎分の一定速度で回転させ、経過時間１分毎に各試料片３０３の厚さ寸法を測定して摩耗量を求め、各試料片３０３における経過時間と摩耗量の関係を確認した。また、各試料片３０３を取り外した後に、各試験片から採取した経糸の摩耗量を測定した。
【０１３８】
その結果、各試料片における経過時間１分の時点での摩耗量は、元の厚さに対する割合で表して、試料−１が７．３％、試料−２が５．２％、試料−３が５．０％であり、経過時間１０分の時点での摩耗量は、元の厚さに対する割合で表して、試料−１が１１．７％、試料−２が９．９％、試料−３が１０．０％であった。
【０１３９】
また、各試料片における経過時間１分から１０分の間における１分毎の摩耗量をもとに、試料−１と試料−３の摩耗量の差を求めた結果は、各経過時間共に試料−１が試料−３よりも０．０７ｍｍ〜０．０８ｍｍだけ摩耗量が多かったが、各経過時間を通じてその差はほぼ一定であった。同様に、試料−２と試料−３の摩耗量の差を求めた結果は、各経過時間共に試料−２が試料−３よりも０．０２ｍｍ〜０．０３ｍｍだけ摩耗量が多かったが、各経過時間を通じてその差はほぼ一定であった。
【０１４０】
さらに、経過時間１０分の時点で各試料片３０３を取り外した後に、各経糸における接紙面側の経糸ナックルの頂部での摩耗量を調べた結果、各経糸における経糸の厚さ寸法に対する摩耗量の割合は、試料−１では第１の経糸１２が４６．６％、第２の経糸１３が６３．８％、試料−２では第１の経糸１２が４６．６％、第２の経糸１３が５５．２％であり、試料−３では経糸１１が５１．７％であった。
【０１４１】
上記の結果から、接紙面側表面に表出する経糸ナックルの数が少ない実施例２および実施例４のドライヤーカンバス１５０，１７０は、同じ断面形状、素材の経糸を同様の織組織でほぼ等しい経糸密度に用い、接紙面側表面に表出する経糸ナックルの数がそれらより多い比較例１のドライヤーカンバス１８０と比べて、摩耗初期の段階では、接紙面側に表出する第２の経糸１３の経糸ナックルだけが先に摩耗するため、摩耗初期の段階での摩耗量が幾分多くなり、また、接紙面側の太い緯糸２１と細い緯糸２２の線径差の大きい実施例２の方が、線径差の小さい実施例４よりも摩耗初期の段階での摩耗量が多くなるが、摩耗初期の段階を過ぎた例えば経過時間１分後以降では、経過時間当たりの摩耗量の増加割合に大きな差異はなく、いずれもほぼ同じ割合で摩耗が進行していくことが判った。
【０１４２】
さらに、実施例２および実施例４では、接紙面側の経糸ナックルが織成布の厚さ方向内側に位置する第１の経糸１２の摩耗量が第２の経糸１３よりも少なくなるため、第１の経糸１２の磨耗損傷による強力低下を防ぐことが出来ることが判った。さらにまた、実施例２および実施例４における第１の経糸１２の摩耗量は、同じ経過時間における比較例１の経糸１１の摩耗量よりも少なくなることが判った。
【０１４３】
したがって、工業用搬送ベルトにおいて、それを駆動する牽引力や張力が集中的に掛かるループ形成経糸に、第１の経糸１２の一部または全部を用いて継手を形成すれば、ループ形成経糸の強力低下や、継手部分の表面性の劣化やそれによる紙シートの製品品質への悪影響の危険性を回避することができ、使用期間の延長を計ることが可能となる。
【０１４４】
なお、上記実施例１〜４の各ドライヤーカンバスは、実使用においても、比較例１のドライヤーカンバスよりも表面への汚れ物質の付着が少なかった。
【０１４５】
【発明の効果】
本発明によれば、合成繊維モノフィラメントの経糸および緯糸を用いて織成された製紙機械用ドライヤーカンバスや製紙機械用搬送ベルトを始めとする工業用ベルトにおいて、少なくとも接紙面側の緯糸の層に太さの異なる緯糸を交互に配し、経糸を、接紙面側の１本の細い緯糸を内側に織り込んで接紙面側に経糸ナックルを形成すると共に、反接紙面側の１本の緯糸を内側に織り込んで反接紙面側に経糸ナックルを形成する第１の経糸と、接紙面側の１本の太い緯糸を内側に織り込んで接紙面側に経糸ナックルを形成すると共に、反接紙面側の１本の緯糸を内側に織り込んで反接紙面側に経糸ナックルを形成する第２の経糸とで構成して、第１の経糸が接紙面側に形成する経糸ナックルが接紙面側表面よりも織成布の厚さ方向内側に位置するように構成したから、少なくとも接紙面側表面に表出する経糸ナックルの数が減少し、防汚性ならびに洗浄による汚れ物質の除去特性が従来のものより優れると共に、少なくとも接紙面側表面での摩耗損傷、もしくは高温・高湿条件が重畳しての摩耗損傷による経糸強力の低下およびそれが元での汚れ物質の付着・堆積の増加に因る接紙面側の表面性の劣化が防止できて、従来のものより長期にわたって製品品質の維持が可能、かつ、形態保持性能や走行性の悪化を防止できて、従来のものより使用期間の延長が可能な機械用ドライヤーカンバスや製紙機械用搬送ベルトおよび各種工業用の搬送ベルトなどの工業用ベルトを実現することが出来る。
【０１４６】
さらに、本発明によれば、ワープループシームにおける接合用ループもしくはスパイラルシームにおけるスパイラル線を噛み合わせるループを形成する経糸を、接紙面側表面または、接紙面側および反接紙面側表面における摩耗損傷の防止を施した前記第１の経糸で構成したから、前記ループを形成する経糸の強力低下に起因する継手における早期の破断発生の危険性、および継手部分の織組織の緩み，荒れ，汚れ物質の付着・堆積などがもとでの継手部分の表面性の劣化やそれによる紙シートの製品品質への悪影響の危険性を回避することができて、継手の面からも、従来のものに比べてより長期にわたる製品品質の維持と、工業用ベルトの使用期間の延長を図ることが可能となる。
【０１４７】
加えて、本発明によれば、前記第１の経糸および前記第２の経糸における少なくとも一方の経糸に耐熱性および／または耐摩耗性の優れる素材から成る合成繊維モノフィラメントを用いたから、および／または、少なくとも接紙面側の緯糸の層における少なくとも太い緯糸に耐熱性および／または耐摩耗性の優れる素材から成る合成繊維モノフィラメントを用いたから、耐熱性および／または耐摩耗性の上記向上効果がさらに強化される。
【０１４８】
また、本発明によれば、少なくとも接紙面側おける緯糸の層の少なくとも太い緯糸に、耐熱性および防汚性に優れる素材から成る合成繊維モノフィラメントを用いたから、上記防汚性の向上効果がさらに顕著となる。
【図面の簡単な説明】
【図１】 本発明の第１の実施形態（参考例）における一例に係る工業用ベルトの織組織を示した経糸方向の断面説明図である。
【図２】 本発明の第２の実施形態（参考例）における一例に係る工業用ベルトの織組織を示した経糸方向の断面説明図である。
【図３】 本発明の第３の実施形態における一例に係る工業用ベルトの織組織を示した経糸方向の断面説明図である。
【図４】 本発明の第４の実施形態（参考例）における一例に係る工業用ベルトの継手を示した部分断面説明図である。
【図５】 本発明の第５の実施形態（参考例）における一例に係る工業用ベルトの継手を示した部分断面説明図である。
【図６】 本発明の第６の実施形態における一例に係る工業用ベルトの継手を示した部分断面説明図である。
【図７】 本発明の第７の実施形態（参考例）における一例に係る工業用ベルトの継手を示した部分断面説明図である。
【図８】 本発明の第８の実施形態における一例に係る工業用ベルトの継手を示した部分断面説明図である。
【図９】 本発明の第９の実施形態（参考例）における一例に係る工業用ベルトの継手を示した部分断面説明図である。
【図１０】 本発明の第１０の実施形態における一例に係る工業用ベルトの継手を示した部分断面説明図である。
【図１１】 本発明の比較例に係る工業用ベルトの織組織を示した経糸方向の断面説明図である。
【図１２】 本発明の比較例に係る継手を有する工業用ベルトの部分断面説明図である。
【図１３】 本発明の実施例および比較例の工業用ベルトについて織物表面に表出する経糸ナックルの差を確認する試験で、表出する経糸ナックルが接触することにより発色した接触部を黒点で示す図で、
（Ａ）は実施例２の接紙面側表面の状況、
（Ｂ）は実施例２の反接紙面側表面の状況、
（Ｃ）は実施例３の接紙面側表面の状況、
（Ｄ）は実施例３の反接紙面側表面の状況、
（Ｅ）は比較例の接紙面側表面の状況を示す。
【図１４】 本発明および比較例の工業用ベルトについて表面の摩耗量の確認試験に用いた装置の模式図である。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to improvements in industrial belts used for paper making machine dryer canvases, paper making machine transport belts, and various industrial transport belts.
[0002]
[Prior art]
In general, industrial belts are used to transport various industrial products and processed products. For example, in finishing processes such as paper machine dry parts, calendar parts, and coating processes, dryer canvases and paper machines for paper machines are used. A machine conveyor belt is used. Also known are net conveyors and conveyor belts in drying and heat treatment processes for fiber products and processed products such as non-woven fabric thermal bonding processes and food products and processed products.
[0003]
For example, in a paper machine, the gummy pitch of the sticky oil contained in the stock material at the dry part of the paper machine, or the size liquid or coating liquid that is a papermaking paste becomes dirty, and the dryer canvas Adhere to the surface. When this dirt accumulates over time, the canvas is clogged, and the air permeability is remarkably lowered so that its drying action cannot be exhibited. Therefore, the dirt in the paper making dryer canvas has been a serious problem.
[0004]
In order to prevent dirt from adhering to the surface of the canvas, and to easily remove the dirt even if the dirt adheres, a coarse porous paper-making dryer canvas woven into a single-layer plain weave structure is used, for example. 58-55280.
[0005]
This dryer for paper making uses a synthetic resin monofilament with a diameter of 0.6 mmφ to 1.2 mmφ as a warp and a weft, respectively, and a super open mesh with a warp density and a weft density of 8 to 15 pieces / 2.54 cm. Woven into a single-layer plain weave structure, and subjected to heat setting under tension so that both warp and weft are curved and fixed to the same degree at the structure point, and the air permeability is 30,000 cm ^Three /cm ² ・ Min or more.
[0006]
This paper-making dryer canvas is a single layer plain weave structure, and its warp density and weft density are both 8-15 yarns / 2.54 cm, which is extremely coarse, so the entanglement point between the warp and the weft in contact with the wet paper (Intersection points) are reduced, dirt substances are less likely to adhere to the canvas surface, and the eyes are rough, so even if dirt substances adhere, they can be easily removed by washing, brushing, etc. It has excellent soiling properties.
[0007]
By the way, in recent years, from the viewpoint of environmental protection and resource reuse, as waste paper has started to be used in large quantities as a raw material for papermaking, there are many sticky substances such as natural rubber and synthetic rubber contained in waste paper on the canvas surface. The phenomenon of adhering has occurred. Therefore, antifouling measures in the dryer canvas are being demanded more severely than in the past, and the dryer canvas disclosed in the aforementioned Japanese Utility Model Publication No. 58-55280 is difficult to sufficiently respond to the severe requirements. That was the current situation.
[0008]
Therefore, the present applicant examined the cause of the adhesion of dirt substances in the dryer canvas and the antifouling measures based on the situation described above, and the dirt on the canvas surface due to dirt substances such as adhesive substances is mainly warp yarns. Paying attention to the result of adhering from the tangling point (intersection point) of the weft and accumulating over time, as an antifouling measure, the entanglement point (intersection) of warp and weft on the canvas surface in contact with the wet paper In order to reduce the entanglement point (intersection point) of warp and weft while maintaining strength and dimensional stability without reducing the density of warp and weft, By changing the thickness of the weft yarns without changing the density of the warp and weft yarns, the thick weft yarns and the thin weft yarns are arranged alternately to reduce the entanglement points (intersection points) in contact with the wet paper, and the dryer canvas Powerful and low dimensional Have found that the sex is good, it proposes a papermaking drier canvas disclosed in Japanese Patent Laid-Open No. 9-310291.
[0009]
This paper machine dryer canvas is a paper machine dryer canvas in which a synthetic resin monofilament having a circular cross-section is woven into a single-layer plain weave structure as warps and wefts. Monofilaments having different thicknesses are alternately arranged on the wefts. It is characterized by being woven. Further, the thickness of the synthetic resin monofilament is preferably in the range of 0.6 mm to 1.2 mmφ in diameter, and a polyester monofilament is disclosed as a desirable synthetic resin monofilament.
[0010]
This paper-making dryer canvas can reduce the tangling points (intersection points) between the warp and weft that come into contact with the wet paper on the canvas surface. It is a dryer canvas that has a remarkable effect on prevention and has excellent strength and dimensional stability.
[0011]
[Problems to be solved by the invention]
By the way, in recent years, as described above, from the viewpoint of environmental protection and resource reuse, the amount of used paper as a papermaking raw material has been increasing. Especially in heavy papermaking, such as paperboard and cardboard, Operation at a ratio of 100% is also very common. As a result, the user's request for countermeasures against adhesion / deposition of the above-mentioned dirt substance to the canvas texture structure or improvement of the cleaning performance of the adhered dirt is, for example, compared with the time of filing of the aforementioned Japanese Utility Model Publication No. 58-55280. It ’s getting much harder.
[0012]
In the above papermaking, which has a very high ratio of used paper raw materials, there are more paper dust stains due to fine fibers in the raw materials than in the case of other papermaking, and the amount of internal additives and coating agents used is also large. Since there are a lot of items, etc., the amount of dirt adhered to and deposited on the surface of the dryer canvas or near the intersection of the warp and weft is large, and the dirt is interposed between the paper sheet and the canvas. For this reason, the surface of the dryer canvas, particularly the paper contact surface side surface, is also a factor of wear.
[0013]
Also, in paper machine calendar parts and finishing processes such as the coating process, paper dust, internal additives such as white pitch, and contaminants such as coating agents are interposed between the sheet and the canvas or the conveyor belt. In this situation, friction with the paper sheet occurs and wear due to contact with the doctor blade or the like is also superimposed, so that wear on the surface of the canvas or the conveyor belt, particularly the surface on the paper contact surface side, easily proceeds. In addition, wear on the side of the paper that comes back (machine side) due to contact with a mechanical device such as a guide roll also occurs.
[0014]
On the other hand, high-pressure water cleaning and chemical cleaning methods are generally used as an on-machine removal method for contaminated substances deposited and deposited on the dryer canvas, but in order to scrape off the deposits on the canvas surface, In some cases, a net or scraper knitted with spiral wires is installed and used. In such a case, the wear on the canvas surface is further increased by contact with them, so that the surface of the canvas surface, particularly the paper contact surface side surface, is further improved. Improvement of wear resistance, and maintenance of strength and form retention under conditions that are subject to wear damage are also required in conjunction with the improvement of antifouling properties and cleanability.
[0015]
Usually, a dryer canvas is wound endlessly between a plurality of dryer cylinders and rollers and attached to a paper machine to move. Therefore, it is necessary to connect both ends in the length direction to make it endless. There are joints at both ends of the canvas.
[0016]
The joint is formed by extending a part of the warp constituting the canvas fabric at both ends of the canvas, folding back to form a joining loop, and then binding the loop into the canvas body. A so-called warp loop seam is generally used in which a joining core wire is inserted into a common hole formed by connecting the canvases in an endless manner.
[0017]
As another joint, at both ends of the canvas, a part of the warp constituting the canvas fabric is extended and folded to form a loop, and the spiral wire is meshed with the loop, and the common hole of the meshing portion is After inserting the fixed core wire into the canvas body, it is bound in the canvas body, and further, the canvas is connected endlessly by inserting the joint core wire into the common hole of the spiral wires formed by meshing the two spiral wires with each other. Spiral seams are common.
[0018]
Then, the traction force and tension for driving the canvas are concentrated on the warp forming the joining loop and the warp forming the loop for engaging the spiral wire, and the joining loop and the spiral wire are engaged. Since the loop for forming the canvas fabric is usually formed by a part of the warp constituting the canvas fabric, for example, 1/2 or 1/4 warp, when the strength decreases due to wear damage of the warp, There is a high risk that the joint will be broken early and the canvas will become unusable. In addition, depending on the properties of the material such as polyester, the strength reduction due to thermal degradation under high temperature and high humidity conditions may also be affected.
[0019]
Therefore, measures for wear of the warp forming the above-mentioned joining loop or the warp forming the loop for meshing the spiral wire, and measures for lowering the warp strength under conditions of thermal degradation and wear damage, It has become particularly important for extending the service life (extending the service period).
[0020]
On the other hand, monofilaments with large wire diameters and large cross-sectional areas are used for warp yarns to increase the warp thickness dimension and single yarn strength, reduce the degree of influence of wear on warp strength reduction, and prevent early breakage accidents. Although measures such as preventing occurrence have been made, even in that case, the warp wear damage of the above-mentioned joining loop and the loop for meshing the spiral wire and the strength reduction due to thermal degradation are lower than the other warp However, it has not yet reached the effect of decreasing.
[0021]
Accordingly, the present invention is an industrial belt used for transporting various industrial products and processed products, for example, a dryer canvas for a papermaking machine and a transport belt for a papermaking machine. In addition to excellent removal performance, it is intended to prevent warp wear on the surface of the fabric, especially on the side of the paper contact surface that contacts the wet paper. The purpose of the present invention is to provide industrial belts such as dryer canvases for papermaking machines, transport belts for papermaking machines, and various industrial transport belts, which have a longer service life than conventional ones by preventing the warp strength of the warp from being reduced. .
[0022]
[Means for Solving the Problems]
As a technical means for achieving the above object, the present invention provides an industrial belt comprising a synthetic fiber monofilament warp and a woven fabric using a weft, wherein the weft layer is a weft layer on the paper contact side. And at least two weft layers including a weft layer on the side opposite the paper surface, Said Weft layer on the paper contact side And a layer of the weft on the side opposite the paper But Both Wefts with different thicknesses are arranged alternately, and the warp is one thin weft on the paper contact side. And one thin weft on the side facing the paper Woven inward, paper contact side And anti-paper side A first warp forming a warp knuckle and one thick weft on the paper contact side And one thick weft on the side facing the paper Woven inward, paper contact side And anti-paper side Having a second warp forming a warp knuckle, and the first warp is on the paper contact surface side And anti-paper side The warp knuckle that is formed into The second warp is defined by a warp knuckle formed on the paper contact surface side and the reverse paper contact surface side. Paper side surface And the reverse side surface Located on the inner side in the thickness direction of the woven fabric, and further, the second warp has better heat resistance and / or wear resistance than the first warp. The A synthetic fiber monofilament made of a material is used (claim 1).
[0023]
Reference example The weft layers on the paper-contacting surface side and the weft layers on the counter-contacting surface side are alternately arranged with wefts having different thicknesses, and the second warp is Anti The warp knuckle formed on the paper contact side Anti It is located in the thickness direction inner side of a woven fabric rather than the paper-contacting surface side surface.
[0024]
The present invention as mentioned above, The weft layer on the paper-contacting surface side and the weft layer on the anti-paper-contacting surface side are formed by alternately arranging wefts having different thicknesses, and the warp knuckle formed by the first warp on the anti-contacting surface side is It is located on the inner side in the thickness direction of the woven fabric with respect to the paper contact surface side surface. 1 ).
[0025]
Reference example The weft layer on the side of the paper-contacting side is composed of wefts of equal thickness, and the warp knuckle formed by the first warp on the side of the paper-contacting side and the second warp formed on the side of the paper-contacting surface The warp knuckle is made to be flush with the surface on the side opposite the paper surface.
[0026]
The present invention is also more excellent in heat resistance than the first warp in the at least the thick weft in the weft layer on the paper contact surface side among the weft layers on the paper contact surface side and the counter contact paper surface side. The A synthetic fiber monofilament made of a material is used (claim) 2 ).
[0027]
The present invention also provides that at least the thicker wefts in the weft layers on the paper contact surface side among the weft layers on the paper contact surface side and the reverse paper surface side are more heat resistant and antifouling than the first warp. Excellent The A synthetic fiber monofilament made of a material is used (claim) 3 ).
[0028]
According to the present invention, the industrial belt extends a part of the warp constituting the woven fabric and folds back to form a joining loop, which is then bound into the woven structure of the woven fabric body. An industrial belt having joints for connecting a woven fabric endlessly by inserting a joining core wire into a common hole formed by meshing loop rows with each other at both ends in the longitudinal direction of the woven fabric, After forming the loop for joining by folding, the warp to be bound into the woven structure of the woven fabric main body is formed using a part or all of the first warp. 4 ).
[0029]
The present invention is also a warp knuckle formed by a portion of a warp to be bound into a woven structure of a woven fabric main body after forming the joining loop by folding, the paper-contacting surface side surface and the paper-contacting surface side surface The warp knuckle is formed on the inner side in the thickness direction from the surface of the woven fabric.
[0030]
According to the present invention, the industrial belt extends a part of the warp constituting the woven fabric and folds to form a loop. The loop is meshed with each of the loops, and a common hole of the meshed portion is formed. After the fixed core wire is inserted, it is bound into the woven fabric of the woven fabric body, and the spliced core wire is inserted into the common hole between the two spiral wires and the woven fabric is endless. An industrial belt having joints for connecting in a longitudinal direction at both ends in the longitudinal direction of the woven fabric, wherein warps forming loops for meshing with the spiral wires are used as one of the first warps. It is formed using a part or all (claim) 5 ).
[0031]
In the present invention, the folding loop is formed to form a joining loop, the spiral wires are respectively meshed with the loops, the fixed core wire is inserted into the common hole of the meshing portion, and then the fabric is bound into the woven tissue of the woven fabric body. A warp knuckle formed by a warp portion to be inserted, wherein the warp knuckle formed on the paper contact surface side surface and the reverse paper contact surface side surface is located on the inner side in the thickness direction from the surface of the woven fabric.
[0032]
DETAILED DESCRIPTION OF THE INVENTION
The term “industrial belt” in the present invention is a broad term that collectively refers to a dryer canvas for a paper machine, a conveyor belt for a paper machine, and various industrial conveyor belts made of woven fabric using synthetic fiber monofilament warp and weft. belongs to.
[0033]
In the present invention, since synthetic fiber monofilament is used for warp and weft, it is possible to prevent adhesion and entry of dirt substances to the surface and inside of the yarn, compared to the case of using multifilament or spun yarn. It also improves the removal performance of adhered and accumulated dirt substances.
[0034]
The above-mentioned “synthetic fiber monofilament” means heat resistance performance such as polyester such as PET (polyethylene terephthalate), PBT (polybutylene terephthalate), PEN (polyethylene naphthalate), or PPS (polyphenylene sulfide), PEEK (polyether ether ketone). Synthetic fiber monofilament mainly composed of good materials. Further, for example, monofilaments containing antifouling materials such as PTFE (polytetrafluoroethylene) monofilaments and monofilaments containing fluorine-based resins are included.
[0035]
The weaving structure is a weaving structure in which the weft layer has at least two weft layers including a weft layer on the paper-contacting surface side and a weft layer on the opposite paper-contacting surface side. Based on a weft double weave structure consisting of a weft layer on the paper-contacting surface side and a weft layer on the anti-paper-contacting surface side. For example, in order to lower the air permeability setting range and increase the rigidity of the fabric, Between the weft layer on the paper contact side and the weft layer on the side opposite the paper surface, a weft 2.5 or weft triple weave structure having one additional weft layer may be used. . From the viewpoint of preventing adhesion of paper dust and dirt substances and removing attached dirt, it is preferable to use a synthetic fiber monofilament for the added weft layer.
[0036]
Also, on the paper-contacting side and the counter-contacting surface side, a warp knuckles are formed by weaving one weft inward, and a portion where the warp intersects with the weft using a weave structure that does not form a warp float (crossing) It is preferable to increase the degree of contact between the warp and the weft at the point) to improve the rigidity, form retention and running stability of the woven structure.
[0037]
(First embodiment)
FIG. 1 shows a first embodiment. (Reference example) It is sectional drawing of the warp direction which showed the woven structure of the industrial feeding belt 10 which concerns on an example in.
[0038]
In the industrial belt 10 as an example in the first embodiment of the present invention, the warp 11 has a first warp 12 and a second warp 13, and the weft layer 33 is a weft layer 33 on the paper contact surface side 31. And a weft yarn layer 34 on the side opposite to the paper surface 32. Of the weft layer 33 on the paper contact surface side 31 and the weft layer 34 on the paper contact surface side, at least the weft layer 33 on the paper contact surface side 31 is different from the wefts 21 and 22 having different thicknesses, that is, the thick weft 21 and the thin layer. It is configured as a layer of wefts in which wefts 22 are alternately arranged. Further, the weft layer 34 on the side opposite to the paper surface 32 is composed of wefts 23 having the same thickness. The thickness of the weft 23 on the paper-contacting surface side 32 can be the same as or different from the weft 21 or 22 on the paper-contacting surface side 31. From the viewpoint of the morphological stability and rigidity of the woven structure, it is desirable that the thickness is at least greater than the thickness of the thin weft 22 and less than the thickness of the thick weft 21.
[0039]
The first warp 12 weaves one thin weft 22 on the paper contact surface side 31 to form a warp knuckle 14a on the paper contact surface side 31 and a single weft 23 on the paper contact surface side 32. The warp knuckle 16a is formed on the side 32 facing the paper side by weaving inside. Further, the second warp 13 is formed by weaving one thick weft 21 on the paper contact surface side 31 to form a warp knuckle 15a on the paper contact surface side 31 and one weft 23 on the counter contact paper surface side 32. Are woven inward to form the warp knuckle 17a on the side 32 facing the paper.
[0040]
Furthermore, as a woven fabric using the warp 11, the warp knuckle 14 a (at the position indicated by B in the figure) formed by the first warp 12 on the paper contact surface side 31 is the second warp 13 on the paper contact surface side 31. The woven fabric is configured so as to be located on the inner side in the thickness direction of the belt 10 with respect to the paper contact surface side surface 35 defined by the warp knuckle 15a (in the position indicated by A in the figure). In FIG. 1, as a preferred example of the first embodiment, the warp knuckle 16 a formed by the first weft 12 on the side of the paper-contacting surface 31 and the warp knuckle 17 a formed by the second warp 13 on the side of the paper-contacting surface 32. Has shown the example which is the same surface as the surface 36 (it is the position shown by C in the figure) of the reverse paper surface side 32, but it is not limited to this example, the diameter yarn knuckle 16a Alternatively, any one of 17a may be on the same plane as the surface 36 on the side opposite to the paper surface.
[0041]
With this configuration, the warp knuckle exposed on the paper-contacting surface side surface 35 is only the warp knuckle 15a formed by the second warp 13, and the number of warp knuckles that are exposed is reduced. It is possible to prevent the adhering near the intersection of the warp and the weft and to prevent the adhering dirt substance from accumulating over time, and the antifouling property can be improved.
[0042]
In addition, since the occurrence of wear on the paper contact surface side surface 35 of the warp knuckle 14a formed by the first warp 12 on the paper contact surface side 31 is delayed by the amount positioned on the inner side of the paper contact surface side surface 35, the first amount corresponding thereto The degree of strength reduction due to wear of the warp yarns 12 can be reduced.
[0043]
Furthermore, the degree of thermal degradation of the warps 12 and 13 due to the high temperature and high humidity conditions that have a greater influence on the paper contact surface side 31 is also the warp knuckle 14a formed on the paper contact surface side 31 by the first warp 12. Since it is located on the inner side, for example, in the case of a dryer canvas for a papermaking machine, it is reduced by the amount not directly in contact with the wet paper or the dryer cylinder, so that it can be expected that the strength reduction of the first warp 12 due to thermal degradation is suppressed. . In particular, in both ears of the dryer canvas that is not in contact with the wet paper, this effect is great because the thermal load is directly received from the dryer cylinder.
[0044]
Therefore, for example, in the case of a dryer canvas for a papermaking machine or a conveyor belt for a papermaking machine, partial cracking or flaking on the surface of the warp that has been damaged due to wear and reduced strength, and this increases the adhesion and accumulation of dirt substances. The deterioration of the surface property on the paper contact surface side 31 and the risk of adversely affecting the product quality of the paper sheet are avoided, and the product quality can be maintained over a long period of time, and the partial warp cracking is possible. It is possible to prevent a decrease in strength in the warp direction and a deterioration in form retainability and running performance due to the above, and an industrial belt having a longer use period than the conventional one can be realized.
[0045]
(Second Embodiment)
Next, FIG. 2 shows a second embodiment. (Reference example) It is sectional drawing of the warp direction which showed the woven structure of the industrial belt 50 which concerns on an example.
[0046]
An industrial belt 50 as an example in the second embodiment of the present invention includes a weft layer 33 on the paper contact surface side 31 and a weft layer 34 on the opposite paper surface side in addition to the configuration in the first embodiment. Weft yarns 21, 22 and 24, 25 having different thicknesses, that is, thick weft yarns 21 and thin weft yarns 22, and thick weft yarns 24 and thin weft yarns 25 are alternately arranged in respective layers as weft layers 33 and 34. . At the same time, the first warp 12 weaves one thin weft 22 on the paper contact surface side 31 to form the warp knuckle 14b on the paper contact surface side 31 and one thick weft 24 on the paper contact surface side 32. And the warp knuckle 16b is formed on the paper-contacting surface side 32, and the second warp 13 weaves one thick weft 21 on the paper-contacting surface side 31 on the inner side and the warp knuckle 15b on the paper-contacting surface side 31. The warp knuckle 17b formed by the second warp yarn 13b is formed by weaving one thin weft 25 on the opposite paper surface side 32 inside to form the warp knuckle 17b on the opposite paper surface side 32 (D in the figure). Is a woven fabric located on the inner side in the thickness direction than the surface 36 on the side opposite to the paper surface defined by the warp knuckle 16b (at the position indicated by C in the figure) formed by the first warp 12 It is.
[0047]
(Third embodiment)
FIG. 3 is a cross-sectional view in the warp direction showing a woven structure of an industrial belt 60 according to an example of the third embodiment of the present invention.
[0048]
An industrial belt 60 as an example in the third embodiment of the present invention includes a weft layer 33 on the paper contact surface side 31 and a weft layer on the reverse paper surface side 32 in addition to the configuration in the first embodiment described above. 34, wefts 21, 22, and 24, 25 having different thicknesses, that is, weft layers 33 and 34 in which thick wefts 21 and thin wefts 22 and thick wefts 24 and thin wefts 25 are alternately arranged in the respective layers. At the same time, the first warp 12 weaves one thin weft 22 on the paper contact surface side 31 to form the warp knuckle 14c on the paper contact surface side 31 and one thin weft 25 on the paper contact surface side 32. And the warp knuckle 16c is formed on the paper-contacting surface side 32, and the second warp 13 weaves one thick weft 21 on the paper-contacting surface side 31 on the inner side and the warp knuckle 15c on the paper-contacting surface side 31. And a warp knuckle 16c formed by the first warp 12 (F in the figure). Is a woven fabric located on the inner side in the thickness direction from the surface 36 on the side opposite to the paper surface defined by the warp knuckle 17c (at the position indicated by E in the figure) formed by the second warp 13 It is.
[0049]
In the belt 50 of the second embodiment shown in FIG. 2, the thick weft 21 in the weft layer 33 on the paper contact surface side 31 and the thin weft 25 in the weft layer 34 on the opposite paper surface side 32 are woven fabric. The thin wefts 22 in the weft layer 33 on the paper-contacting surface side 31 and the thick wefts 24 in the weft layer 34 on the anti-contacting surface side 32 overlap in the thickness direction of the woven fabric. It can be constituted as follows.
[0050]
On the other hand, in the belt 60 of the third embodiment shown in FIG. 3, the thick weft 21 in the weft layer 33 on the paper contact surface side 31 and the thick weft 24 in the weft layer 34 on the reverse paper surface side 32 are woven. The thin wefts 22 in the weft layer 33 on the paper contact surface side 31 and the thin wefts 25 in the weft layer 34 on the reverse paper surface side 32 overlap in the thickness direction of the fabric in the thickness direction of the woven fabric. It can be configured to overlap.
[0051]
1, 2, and 3, the warp arrangement order indicated by Arabic numerals in parentheses is an example, and the embodiment of the present invention is not particularly limited.
[0052]
In the case of the second embodiment and the third embodiment, the number of warp knuckles exposed to the paper contact surface side surface 35 in the case of the first embodiment is reduced on the paper contact surface side 31. In addition to the effect of improving the antifouling property, the effect of improving the antifouling property on the side of the paper contact surface 32 by reducing the number of warp knuckles exposed to the surface 36 of the surface of the paper contact side is more preferable.
[0053]
Particularly in the case of the third embodiment, the wear of the warp knuckle 14c formed on the paper contact surface side 31 by the first warp 12 and the wear of the warp knuckle 16c formed on the side of the paper contact surface 32 are combined. This is more preferable because it can be suppressed and the degree of strength reduction in the first warp 12 is further reduced.
[0054]
In the practice of the present invention, in addition to the above-described configuration, at least one of the first warp 12 and the second warp 13 has more heat resistance and / or wear resistance than the other warp. It is preferable to use a synthetic fiber monofilament made of an excellent material.
[0055]
For example, the first warp 12 is used for the second warp 13 that is more susceptible to wear damage on the paper contact surface side 31 and wear damage superimposed on the conditions of high temperature and high humidity than the first warp 12. If a monofilament made of a material having higher heat resistance and / or wear resistance than a monofilament is used, both the first warp 12 and the second warp 13 are necessarily monofilaments made of a material having excellent heat resistance and / or wear resistance. Even if not used, the degree of reduction in strength in the first warp 12 can be reduced by the above-described configuration, and at the same time, the heat resistance and / or wear resistance of the second warp 13 can be strengthened. In addition, the use period of the industrial belt can be further extended, which is preferable.
[0056]
For example, a polyester monofilament such as PET or PBT is used for the first warp 12, and a synthetic fiber monofilament mainly composed of a material such as PPS or PEEK having better heat resistance is used for the second warp 13. Can
[0057]
In addition, in the practice of the present invention, the thick weft 21 and the thin weft in at least the weft layer 33 on the paper contact surface side 31 among the weft layers 33 and 34 on the paper contact surface side 31 and the counter paper contact surface side 32. The synthetic fiber monofilament made of a material having higher heat resistance than the synthetic fiber monofilament used for the first warp 12 is used for at least the thick weft 21 of 22 to further improve the heat resistance of the woven structure on the paper contact surface side 31. Is preferred. A monofilament made of a material having higher heat resistance than the first warp 12 is used for all the thick wefts 21 and thin wefts 22 on the paper contact surface side 31 or all of the wefts on the paper contact surface side 31 and the counter contact paper surface side 32. Although it is more effective, the effect of improving the heat resistance of the woven structure on the paper contact surface side 31 can be expected even if only the thick weft 21 on the paper contact surface side 31 is used. For example, PET is used for the first warp 12, and monofilament mainly composed of a material having good heat resistance such as PET or PPS or PEEK is used for the second warp 13, and the weft layer 33 on the paper contact surface side 31 or the contact The weft layers 33 and 34 on the paper surface side 31 and the opposite paper surface side 32 are formed using monofilaments mainly composed of a material having good heat resistance such as PPS or PEEK.
[0058]
In the practice of the present invention, of the weft layers 33 and 34 on the paper contact surface side 31 and the counter contact paper surface side 32, at least the thick weft yarn 21 and the thin weft yarn 22 in the weft layer 33 on the paper contact surface side 31. Among them, at least the thick weft 21, the synthetic fiber monofilament made of a material superior in heat resistance and antifouling property to the synthetic fiber monofilament used for the first warp 12, such as a PTFE monofilament or a monofilament containing a fluorine resin, etc. It is preferable to use a monofilament containing a soil material.
[0059]
Thereby, the number of warp knuckles exposed to the paper contact surface side surface 35 and / or the counter contact paper surface side surface 36 by the above-described configuration is reduced, and the effect of improving the antifouling property becomes more remarkable. This is preferable because the adhesion and accumulation of dirt substances near the intersection of the wefts are further reduced, the washing and removal performance of the adhered dirt substances is further improved, and the heat resistance of the woven structure is improved.
[0060]
It is more effective to use a synthetic fiber monofilament containing an antifouling material for all the thick wefts 21 and thin wefts 22 on the paper contact surface side 31 or all the wefts on the paper contact surface side 31 and the anti-paper contact surface side 32. However, even when used only for the thick wefts 21 on the paper contact surface side 31, it is possible to improve the antifouling property and the performance of removing dirt substances.
[0061]
In the practice of the present invention, the wefts 21, 22, and 23, 24, 25 constituting the weft layers 33 and 34 on the paper contact surface side 31 and the counter contact paper surface side 32 have, for example, a diameter dimension of 0.40 mmφ to 1. The synthetic fiber monofilament having a circular cross section in the range of 10 mmφ can be applied. The cross-sectional shape of the weft is not particularly limited, and a quadrangle, a polygon such as a hexagon or an octagon, an oval or an ellipse, or an approximate cross-sectional shape thereof can be used. preferable. The range of the thickness of the weft is to obtain the necessary degree of weft crimp and the degree of contact at the intersection with the warp when crossing with the warp in the woven structure, and to improve the shape retention performance of the woven fabric. In addition, the lower limit of the thickness of the weft is a range necessary for securing the rigidity in the weft direction.
[0062]
In addition, as a preferable range of the weft density with respect to the range of the dimensions of the wefts 21, 22 and 23, 24, 25, for example, in the case of a weft double woven structure, 9 yarns / 2 / 2.54 cm to 21 yarns × A range of 2 / 2.54 cm can be exemplified.
[0063]
Further, as the thick wefts 21 and 24 on the paper contact surface side 31 and the reverse paper contact surface side 32, a circular monofilament with a cross-sectional diameter in the range of 0.50 mmφ to 1.10 mmφ, and the paper contact surface side 31 and the reverse paper surface side The thin wefts 22 and 25 of 32 are preferably circular monofilaments having a cross-sectional diameter in the range of 0.40 mmφ to 0.80 mmφ, the difference in thickness between the thick weft 21 and the thin weft 22, and the thick weft 24 and the thin. The difference in the thickness of the weft yarn 25 is preferably in the range of 0.10 mm to 0.30 mm, and more preferably in the range of 0.20 mm to 0.30 mm.
By setting the difference in thickness, the number of warp knuckles exposed on the paper contact surface side 31 and the counter contact paper surface side 32 is reduced, and the warp knuckle formed by the first warp 12 or the second warp 13 is used. A distance inward in the thickness direction from the surface of the woven fabric is secured.
[0064]
In the practice of the present invention, the preferred size range of the first warp 12 and the second warp 13 is, for example, in the case of a cross-sectional circular monofilament, the cross-sectional diameter is in the range of 0.40 mmφ to 1.00 mmφ. Of these, a range of 0.50 mmφ to 0.80 mmφ is preferable. Further, in the case of a flat cross section monofilament having a square cross section, the thickness in the thickness direction of the cross section is in the range of 0.30 mm to 0.60 mm, and the width direction dimension of the cross section is in the range of 0.45 mm to 1.20 mm. A range of the ratio of the dimension in the width direction and the dimension in the width direction can be exemplified as a range of 1: 1.5 to 1: 2.0. Furthermore, in the case of a monofilament having a square cross section, one side dimension of the cross section may be in a range of 0.40 mm to 0.90 mm.
[0065]
When the cross-sectional dimension of the warp 11 (12, 13) is less than the above range, the rate of decrease in the strength per single yarn of the warp due to the decrease in the cross-sectional area due to wear is large, and it is difficult to maintain the required strength in the warp direction. Therefore it is not suitable. If the above range is exceeded, it will be difficult to achieve the required surface smoothness on the paper-contacting surface side 31, and the flexibility in the warp direction will be reduced, so that the adhesiveness to the wet paper and the running stability will be reduced. Is not suitable because it is easily damaged. The quadrangular and square cross-sectional shapes include cross-sectional shapes in which the four corners are chamfered in a curved or linear shape with appropriate dimensions.
[0066]
Further, the warp density and the warp filling rate are appropriately selected and determined in consideration of the shape and dimensions of the warp and the strength characteristics of the material within a range that satisfies the object of the present invention. Examples of the range of 50% to 125%, preferably 75% to 110%. The upper limit is that at least the necessary antifouling properties and dirt removal performance can be satisfied, and the lower limit is that the necessary surface smoothness on the paper contact surface side 31 can be realized, and wear damage or high temperature / high humidity is superimposed. Therefore, it is stipulated in view of the fact that the necessary warp strength and period of use can be secured even under use conditions that suffer wear damage. The above-mentioned “warp filling rate” is expressed by using the product of the warp density in the width direction of the woven fabric of the warp constituting the woven fabric and the widthwise dimension of the cross section, per unit length. Percentage.
[0067]
(Fourth embodiment)
Next, FIG. 4 shows a fourth embodiment. (Reference example) It is a fragmentary sectional view of the industrial belt 70 which has the joint which concerns on an example in.
[0068]
The industrial belt 70 as an example in the fourth embodiment of the present invention is a first warp constituting the woven fabric in the industrial belt 10 having the woven fabric structure based on the first embodiment described above. 12 is composed of warp yarns 18 and 19, and a part of one warp yarn 18 is extended and folded to form a joining loop 40, which is then stitched into the woven fabric of the woven fabric body, A joint 71 (so-called warp loop seam) for connecting the woven fabric endlessly by inserting the joint core wire 42 into the common hole 41 meshing with each other is connected to both ends 72 of the woven fabric in the longitudinal direction. When forming the loop 72 for joining, the warp yarn 18 (18a) to be bound into the woven structure of the woven fabric body is used by using a part or all of the first warp yarn 12. To form.
Instead of the industrial belt 10, industrial belts 50 and 60 having a woven fabric structure based on the second embodiment or the third embodiment may be used.
[0069]
(Fifth embodiment)
Furthermore, FIG. 5 shows a fifth embodiment. (Reference example) It is a fragmentary sectional view of the joint which showed the industrial belt 80 which has the joint which concerns on an example in.
[0070]
An industrial belt 80 as an example in the fifth embodiment of the present invention is a first warp constituting the woven fabric in the industrial belt 10 having the structure of the woven fabric based on the first embodiment described above. 12 is composed of warps 52 and 53, and a part of one warp 52 is extended and folded to form a loop 45a. A spiral wire 46 is meshed with the loop 45a, and the common hole 47a of the meshing portion is engaged with the loop 45a. After the fixed core wire 48 is inserted, the fixed core wire 48 is inserted into the woven structure of the woven fabric main body, and the joint core wire 49 is inserted into the common hole 44 between the spiral wires formed by meshing the two spiral wires 46 and 46 with each other. When forming joints 81 (so-called spiral seams) for connecting the woven fabrics in an endless manner at both ends 72, 72 in the longitudinal direction of the woven fabric, the spiral wires 46 are formed. Each warp 52 (52c) forming the loop 45a for meshing is formed by using part or all of the first warp 12, and the warp 52 (52c) forming the loop 45a is connected to the joint portion. The loop 45a is formed by extending between the leading wefts 26 and 27 and turning back.
Instead of the industrial belt 10, industrial belts 50 and 60 having a woven fabric structure based on the second embodiment or the third embodiment may be used.
[0071]
In addition, in FIG. 5, in addition to the loop 45a, one warp 54 of the second warp 13 (54, 55) is connected to the joint end wefts 26, 27 at the longitudinal end 72 of the woven fabric. The fixed core wire 48 is folded back so as to form a loop 45b, the spiral wire 46 is meshed with the loop 45b, the fixed core wire 48 is inserted into the common hole 47a of the meshing portion, and then the tip of the extension portion Although the example in which the side is bound into the woven structure of the woven fabric main body has been shown, the present invention is not limited to this example, and the second warp 13 (54 or 55) is connected to the joint tip end wefts 26 and 27 and the fixed core wire 48. May be folded back so that the joint end wefts 26 and 27 are wound, and the distal end side of the extension portion may be bound into the woven structure of the woven fabric body.
[0072]
(Sixth embodiment)
FIG. 6 is a partial cross-sectional view showing an industrial belt 90 having a joint according to an example of the sixth embodiment of the present invention.
[0073]
An industrial belt 90 as an example in the sixth embodiment of the present invention is the industrial belt 60 having the structure of a woven fabric based on the above-described third embodiment, and the second belt constituting the woven fabric. The warp 13 is composed of the warps 58 and 59, and the extension portion of one warp 58 is folded back so as to be wound up from below the front-end weft 27 on the side opposite the paper surface, thereby forming one loop 45d. The distal end side of the extended portion passes between the distal end wefts 26 and 27 into the woven structure of the woven fabric body, that is, one warp 57 in the adjacent first warp 12 (56, 57) is long from the end of the canvas. It is bound with a woven structure similar to the woven structure of the woven fabric body to the traces cut and removed at the necessary positions in the vertical direction.
[0074]
In addition, an extension portion of one warp 56 in the first warp 12 is folded back so as to be wound up from below the front-end weft 26 on the paper contact surface side 31 to form one loop 45c. Between the leading weft 26 and the second weft from the leading end into the woven structure of the woven fabric body, that is, one warp 59 of the adjacent second warp 13 is moved in the length direction from the end of the canvas. The marks removed by cutting at the necessary positions are bound with a woven structure similar to the woven structure of the woven fabric body.
[0075]
Then, the spiral wires 46 and 46 are respectively meshed with the loops 45c and 45d, the fixed core wires 48 and 48 are inserted into the common holes 47b of the loops 45c and 45d and the spiral wires 46 and 46, and then two spiral wires 46 are further inserted. , 46 are meshed with each other, and joints 91 (spiral seams) for connecting the woven fabric endlessly by inserting the joint core wire 49 into the common hole 44 of the spiral wires are connected to each other in the longitudinal direction of the woven fabric. It forms in the part 72,72.
Instead of the industrial belt 60, the industrial belts 10 and 50 having a woven fabric structure based on the first embodiment or the second embodiment may be used.
[0076]
According to the fourth to sixth embodiments, the industrial belts 70 to 90 having joints at both ends in the length direction for connecting the both ends in the length direction so as to be endless. In order to mesh all the warp forming warps to which the traction force and the tension for driving them are concentrated, that is, all of the warps 18 forming the joining loop 40 in the warp loop seam 71 or the spiral wire 46 in the spiral seam 81. Among the loops 45a and 46b, at least the warp yarn 52 forming the loop 45a or the warp yarn 56 forming at least the loop 45c among the loops 45c and 45d for meshing the spiral line 46 in the spiral seam 91 is on the paper contact surface side. Warp knuckles 14 a located on the inner side in the thickness direction on the surface 35, 4c, or a first warp 12 (18, 18) that forms a warp knuckle 14c located on the inner side in the thickness direction on the paper-contacting surface side surface 35 and a warp knuckle 16c located on the inner side in the thickness direction on the anti-paper-contacting surface side surface 36. 52, 56). In particular, in the warp loop seam 71 of the fourth embodiment, all the joining loops 40 are formed of only the first warp 12 (18).
[0077]
Therefore, for example, in the case of a dryer canvas for a paper machine or a conveyor belt for a paper machine, the strength of the loop warp is reduced due to wear damage or wear damage caused by the combination of high temperature and high humidity, and the woven structure of the joint part is loosened or roughened. In addition, it is possible to avoid the risk of deterioration of the surface property of the joint part due to the adhesion / deposition of dirt substances and the resulting adverse effect on the product quality of the paper sheet, and also prevent the joint from breaking early. As a result, it is possible to maintain the product quality over a longer period from the viewpoint of the joint, and it is possible to extend the use period of the canvas and the conveyor belt.
[0078]
In addition, in the joint 71 according to the example of the fourth embodiment of the present invention shown in FIG. 4, the additional weft 28 shown by the mark ● is folded back while winding the joint end wefts 26 and 27. This is an additional weft inserted into a portion 43 surrounded by the weft pressing warp 38 and the root 40a of the joining loop 40.
[0079]
For the additional weft yarn 28, for example, a single synthetic fiber monofilament made of a material such as polyester or PPS, a twisted yarn made of a plurality of monofilaments, or a twisted yarn made of a plurality of multifilaments can be applied. Further, it is preferable to use a twisted yarn composed of a plurality of PPS monofilaments or PPS multifilaments because the heat resistance of the joint portion is improved and the life can be extended.
[0080]
If these additional wefts 28 are inserted, the weft pressing warp 38 protrudes from the paper contact surface side surface 35 or the counter contact paper surface side surface 36 at the end 72 where the front end wefts 26 and 27 are wound, and marks are formed on the paper sheet. This is preferable because it is possible to prevent the occurrence of a state that occurs and to prevent the tip wefts 26 and 27 from coming off.
[0081]
Furthermore, the above-mentioned monofilament twisted yarn or multifilament twisted yarn, particularly PPS multifilament twisted yarn, is applied to the joint tip end wefts 26 and 27 indicated by ◎ and / or the additional weft 28 indicated by the aforementioned ●. Is even more effective. Further, depending on the application, it is possible to use the monofilament twisted yarn or the multifilament twisted yarn only for the tip wefts 26 and / or 27 without inserting the additional wefts 28.
[0082]
Further, in the industrial belt 80 having the joint according to an example of the fifth embodiment of the present invention shown in FIG. 5, the above-mentioned monofilament twisted yarn or multifilament twisted yarn is added to the joint portion front end wefts 26 and 27 indicated by ◎. In particular, it is preferable to apply a PPS multifilament twisted yarn because it is possible to prevent the occurrence of marks on the paper sheet and the leading wefts 26 and 27 from slipping out.
[0083]
(Seventh embodiment)
Further, FIG. 7 shows a seventh embodiment. (Reference example) It is the fragmentary sectional view showing industrial belt 100 which has a joint concerning an example in.
[0084]
An industrial belt 100 as an example in the seventh embodiment of the present invention is used for folding and joining in the industrial belt 70 (FIG. 4) having a joint (warp loop seam) based on the above-described fourth embodiment. After forming the loop 40, the warp 18 (18a) to be bound into the woven structure of the woven fabric body is formed by using a part or all of the first warp 12, and folded to form the joining loop 40. After that, the warp knuckle 14b (in the position indicated by H in the figure) formed by the warp portion 18b to be bound into the woven structure of the woven fabric body on the paper contact side 31 is the paper contact side surface 35 (G in the figure). The joint structure is located on the inner side in the thickness direction of the woven fabric.
In addition, in FIG. 7, the example using the industrial belt 50 which has the structure of the said 2nd Embodiment was shown for the woven fabric.
[0085]
In this case, in the industrial belt 10, 50, 60 of the first embodiment, the second embodiment, or the third embodiment, the first warp 12 and the second warp 13 are respectively 18, The warp yarn 18 that is folded and formed into the woven tissue of the woven fabric body after forming the joining loop 40 by using the woven fabric arranged alternately by two of 19 and 38, 39, and the woven fabric A warp 19 for cutting and removing a necessary length portion from the end portion 72 to the woven fabric main body side to create a gap into which the warp 18 is bound is used by using the two first warps 12 each. It is desirable to configure.
[0086]
(Eighth embodiment)
FIG. 8 is a partial cross-sectional view showing an industrial belt 110 having a joint according to an example of the eighth embodiment of the present invention.
[0087]
An industrial belt 110, which is an example in the eighth embodiment of the present invention, is an industrial belt 100 having a joint (warp loop seam) structure based on the seventh embodiment, and the weaving of the third embodiment. Instead of the industrial belt 60 having a fabric structure, a warp portion 18b formed on the side of the paper-contacting surface 32 is formed by folding and forming the joining loop 40 and then binding the warp portion 18b into the woven structure of the woven fabric body. The knuckle 16c (located at a position indicated by J in the figure) also has a joint structure positioned on the inner side in the thickness direction of the woven fabric from the surface 36 (at a position indicated by I in the figure) on the side opposite the paper surface. .
[0088]
In this case, in the woven structure of the third embodiment, the first warp 12 and the second warp 13 are alternately arranged two by one, 18, 19, and 38, 39, respectively, and the paper contact surface side 31 One thick weft 21 and one thick weft 24 on the paper-contacting surface side 32, and one thin weft 22 on the paper-contacting surface side 31 and one thin weft 25 on the paper-contacting surface side 32, respectively. From the warp 18 that is folded and formed into the woven structure of the woven fabric body, and the end portion 72 of the woven fabric. It is desirable that the warp 19 for creating a gap into which the warp 18 is bound by cutting and removing a necessary length portion on the woven fabric main body side is constituted by using the first warps 19 of the two pieces. .
[0089]
(Ninth embodiment)
Furthermore, FIG. 9 shows a ninth embodiment. (Reference example) It is a fragmentary sectional view showing industrial belt 120 which has a joint concerning an example in.
[0090]
An industrial belt 120, which is an example in the ninth embodiment of the present invention, is the spiral wire 46 in the industrial belt 80 (FIG. 5) having a joint (spiral seam) structure based on the fifth embodiment. A warp 52 (52c) for forming a loop 45a for meshing each of the first and second warps 52 is formed using part or all of the first warp 12, and the loop 45a is formed by folding back the warp 52c forming the loop 45a. After that, the warp knuckle 14b (in the position indicated by L in the figure) formed by the portion 52d bound in the woven structure of the woven fabric body on the paper contact side 31 is the paper contact side surface 35 (indicated by K in the figure). It has a joint structure located on the inner side in the thickness direction of the woven fabric.
In addition, in FIG. 9, the example using the industrial belt 50 which has the structure of the said 2nd Embodiment was shown for the woven fabric.
[0091]
In this case, in the industrial belt 10, 50, 60 having the woven fabric structure of the first embodiment, the second embodiment, or the third embodiment, the first warp 12 and the second warp Using the woven structure in which the warp yarns 13 are arranged alternately two by 52, 53 and 54, 55, respectively, and after forming the loop 45a by folding, the warp yarn 52 is bound into the woven structure of the woven fabric body; The warp 53 for cutting and removing a necessary length portion from the end portion 72 of the woven fabric to the woven fabric main body side to create a gap into which the warp 52 is bound is used as the two first warps. 12 is preferable.
[0092]
(10th Embodiment)
FIG. 10 is a partial cross-sectional view showing an industrial belt 130 having a joint according to an example of the tenth embodiment of the present invention.
[0093]
An industrial belt 130, which is an example in the tenth embodiment of the present invention, is an industrial belt 120 (FIG. 9) having a joint (spiral seam) structure based on the ninth embodiment described above. In addition to the industrial belt 60 having the woven fabric structure, the warp yarn 52d that is folded back in the warp yarn 52 (52c) forming the loop 45a to form the loop 45a and then bound into the woven tissue of the woven fabric body. The warp knuckle 16c (at the position indicated by N in the figure) formed on the side of the paper-contacting surface 32 is also in the thickness direction of the woven fabric from the surface 36 (at the position indicated by M in the figure) It has the structure of the joint located inside.
[0094]
In this case, in the woven structure of the third embodiment, the first warp 12 and the second warp 13 are alternately arranged side by side, 52, 53 and 54, 55, respectively, and the paper contact surface side 31 One thick weft 21 and one thick weft 24 on the paper-contacting surface side 32, and one thin weft 22 on the paper-contacting surface side 31 and one thin weft 25 on the paper-contacting surface side 32, respectively. From the warp 52 and the end portion 72 of the woven fabric, which are folded back to form the joining loop 40a and then bound into the woven tissue of the woven fabric body. The warp 53 for creating a space in which the warp 52 is bound by cutting and removing a necessary length portion on the woven fabric main body side is constituted by using the first warp 53 of the two pieces. desirable.
[0095]
According to the seventh embodiment or the tenth embodiment, for example, in the case of a dryer canvas for a papermaking machine or a conveyor belt for a papermaking machine, the joining loop 40 in the joints 101 and 111 made of warp loop seams is formed. The portion 18b or 52d of the first warp 52c that forms the loop 45a in the joints 121 and 131 made of one seam 18a or a spiral seam is folded and bound into the woven fabric of the woven fabric body. Since the side surface 35 or the paper contact surface side surface 35 and the reverse paper contact surface side surface 36 has a joint structure in which wear and thermal deterioration are prevented, the strength reduction of the portion 18b or 52d into which the warp is bound, and , The joining loop 40 or the like based on the loosening of the texture of the joint portion caused by the strength reduction It is possible to prevent the occurrence of elongation of the loop 45a and the deterioration of the surface property of the joint portion and thereby adversely affect the product quality of the paper sheet, and further maintain the product quality over a long period of time and extend the use period of the canvas and the conveyor belt. It can be expected and is preferable. In particular, in the case of the eighth embodiment and the tenth embodiment, after forming the joining loop 40 or the loop 45a, a portion 18b or 52d that is folded back and bound into the woven tissue of the woven fabric body is provided. This is preferable because the joint-contact surface structure is provided with wear and heat deterioration prevention on the paper-contacting surface side surface 35 and the anti-paper-contacting surface side surface 36.
[0096]
【Example】
Examples and Comparative Examples of the present invention will be described below with reference to the drawings and Tables 1 and 2. In each figure and each table, TM represents a polyester monofilament, PS represents a paper contact surface side, and BS represents a paper contact surface side.
[0097]
Example 1
The dryer canvas 140 of Example 1 was woven with a weft double weave structure in which the specifications shown in Table 1 and the paper contact surface side shown in FIG. Made by set processing.
[0098]
The warp 11 includes a first warp 12 made of a flat cross-sectional polyester monofilament (TM) having a cross-sectional thickness direction size × width direction size of 0.58 mm × 0.88 mm, and a flat cross-sectional PPS monofilament (PPS) having the same cross-sectional size. ) And a warp density of 29.0 pieces / 2.54 cm. In addition, the warp 11 has two first warps 12 and two second warps 13 alternately in the weft direction based on the warp arrangement order indicated by Arabic numerals in () in FIG. Arranged side by side. Unlike the present embodiment, the first warp 12 and the second warp 13 may be alternately arranged one by one.
[0099]
The weft layer 33 on the paper contact surface side 31 has a thick weft 21 of a circular cross-section PPS monofilament (PPS) having a diameter of 0.90 mmφ and a thin weft 22 of a circular cross-section polyester monofilament (TM) having a diameter of 0.70 mmφ. The thick wefts 21 and the thin wefts 22 were alternately arranged one by one, and the density of the wefts 21 and 22 on the paper contact surface side 31 was 12.0 / 2.54 cm. Further, for the weft layer 34 on the side opposite to the paper surface 32, wefts 23 of a circular cross-section polyester monofilament (TM) having a diameter of 0.80 mmφ are used, and the density of the wefts 23 is 12.0 / 25.4 cm. did. That is, the weft density of the dryer canvas 140 is 12.0 × 2 / 2.54 cm.
[0100]
In the dryer canvas 140 of Example 1, the first warp 12 weaves one thin weft 22 on the paper contact surface side 31 to form the warp knuckle 14a on the paper contact surface side 31, and the second warp 13 is woven so that one thick weft 21 on the paper contact surface side 31 is woven inward to form the warp knuckle 15a on the paper contact surface side 31, and the warp knuckle 14a (in the position indicated by B in the figure) The dryer canvas is located on the inner side in the thickness direction of the canvas with respect to the paper contact surface side surface 35 defined by the warp knuckle 15a (at the position indicated by A in the figure).
[0101]
The dryer canvas 140 thus manufactured has a thickness of 3.0 mm and an air permeability of 25,050 cm. ^Three /cm ² ・ It was min.
[0102]
After this dryer canvas 140 was cut to a required length, joints (warp loop seams) 71 and 71 for connecting the canvas endlessly were formed at both ends 72 and 72 in the length direction. FIG. 4 is a partial cross-sectional explanatory view of the joint 71. In forming the joint (warp loop seam) 71, one warp 18 of the two first warps 12 (18, 19) is extended and folded to form the joining loop 40. Similar to the woven structure of the woven cloth main body, in the woven structure of the woven cloth main body, that is, after the other first warp 19 adjacent to the canvas is cut and removed from the end of the canvas at a necessary position in the length direction. Of the two second warps 13 (38, 39) as the weft presser warp 38, and the joint end wefts 26 and 27 on the outside of the joint end. After being wound and turned back, the woven structure of the main body of the woven fabric, that is, the trace of the other adjacent second warp 39 cut from the end of the canvas at an appropriate position in the longitudinal direction and removed, Bind with a woven structure similar to that of It was formed by repeating al in the width direction of the canvas. Further, when the weft holding warp 38 is wound from the outside of the joint tip wefts 26 and 27 and turned back, an additional weft 28 is inserted into a portion 43 surrounded by the weft holding warp 38 and the root 40a of the joining loop 40. did. As the additional weft 28, a twisted yarn obtained by twisting two PPS monofilaments each having a diameter of 0.24 mmφ twisted and twisted two by two was used.
[0103]
(Example 2)
The dryer canvas 150 of Example 2 was woven with a weft double weave structure in which the specifications shown in Table 1 and the paper contact surface side shown in FIG. Made by set processing.
[0104]
The warp 11 is composed of a first warp 12 and a second warp 13 made of a flat cross-sectional polyester monofilament (TM) having a cross-sectional thickness direction dimension × width direction dimension of 0.58 mm × 0.88 mm, and the warp density is 30.0 / 2.54 cm. In addition, the warp 11 has two first warps 12 and two second warps 13 alternately in the weft direction based on the warp arrangement order indicated by Arabic numerals in () in FIG. Arranged side by side. Unlike the present embodiment, the first warp 12 and the second warp 13 may be alternately arranged one by one.
[0105]
The weft layer 33 on the paper contact side 31 has a thick weft 21 of a circular cross-section polyester monofilament (TM) having a diameter of 0.90 mmφ and a thin weft 22 of a circular cross-section polyester monofilament (TM) having a diameter of 0.70 mmφ. And the weft layer 34 on the side opposite to the paper side 32 also has a thick weft 24 of a circular cross-section polyester monofilament (TM) with a diameter of 0.90 mmφ and a circular cross-section polyester monofilament (TM with a diameter of 0.70 mmφ) ) Thin weft yarn 25 was used. Further, in each layer, one thick weft 21 and one thin weft 22, and one thick weft 24 and one thin weft 25 are alternately arranged, and the density of the wefts 21 and 22 on the paper contact surface side 31 and the side of the paper contact surface 32 The density of the wefts 24 and 25 was 12.4 pieces / 2.54 cm. That is, the weft density of the dryer canvas 150 is 12.4 pieces × 2 / 2.54 cm.
[0106]
Further, one thick weft 21 on the paper contact surface side 31 and one thin weft 25 on the paper contact surface side 32, and one thin weft 22 on the paper contact surface side 31 and one on the paper contact surface side 32. The thick wefts 24 were arranged so as to be aligned in the thickness direction of the canvas.
[0107]
In the dryer canvas 150 of the second embodiment, the first warp 12 is formed by weaving one thin weft 22 on the paper contact surface side 31 to form the warp knuckle 14b on the paper contact surface side 31, and on the side opposite to the paper contact surface. 32 thick wefts 24 are woven inward to form the warp knuckle 16b on the opposite side 32, and the second warp 13 weaves one thick weft 21 on the side 31 inward. A warp knuckle 15b is formed on the paper contact surface side 31, and one thin weft 25 on the paper contact surface side 32 is woven inward to form a warp knuckle 17b on the paper contact surface side 32. 14b (in the position indicated by B in the figure) is located on the inner side in the thickness direction of the canvas with respect to the paper contact surface side surface 35 defined by the warp knuckle 15b (in the position indicated by A in the figure). The dryer canvas is located on the inner side of the canvas in the thickness direction with respect to the surface 36 on the side opposite the paper surface defined by the warp knuckle 16b (at the position indicated by C in the figure). It is.
[0108]
The dryer canvas 150 thus manufactured has a thickness of 3.2 mm and an air permeability of 27,350 cm. ^Three /cm ² ・ It was min.
[0109]
After this dryer canvas 150 is cut to a required length, joints (warp loop seams) 101, 101 for connecting the canvas endlessly to both ends 72, 72 in the length direction are connected to the first embodiment. It formed by the same method. FIG. 7 is a partial cross-sectional explanatory view of the joint 101. As the additional weft 28, a twisted yarn obtained by twisting two pieces of a circular polyester monofilament (TM) having a cross-sectional diameter of 0.24 mmφ and twisting them two by two was used.
[0110]
(Example 3)
The dryer canvas 160 of Example 3 was woven with the specifications shown in Table 1 and the weft double weave structure shown in FIG. Made by heat setting.
[0111]
The warp 11 was composed of a first warp 12 and a second warp 13 made of a flat cross-sectional polyester monofilament (TM) having the same cross-sectional dimensions as in Example 2, and the warp density was 29.5 / 2.54 cm. In addition, the warp 11 has two first warps 12 and two second warps 13 alternately in the weft direction based on the warp arrangement order indicated by Arabic numerals in () in FIG. Arranged side by side. Unlike the present embodiment, the first warp 12 and the second warp 13 may be alternately arranged one by one.
[0112]
The weft layer 33 on the paper contact side 31 has a thick weft 21 of a circular cross-section polyester monofilament (TM) having a diameter of 0.90 mmφ and a thin weft 22 of a circular cross-section polyester monofilament (TM) having a diameter of 0.70 mmφ. And the weft layer 34 on the side opposite to the paper side 32 also has a thick weft 24 of a circular cross-section polyester monofilament (TM) with a diameter of 0.90 mmφ and a circular cross-section polyester monofilament (TM with a diameter of 0.70 mmφ) ) Thin weft yarn 25 was used. Further, in each layer, one thick weft 21 and one thin weft 22, and one thick weft 24 and one thin weft 25 are alternately arranged, and the density of the wefts 21 and 22 on the paper contact surface side 31 and the side of the paper contact surface 32 The density of the wefts 24 and 25 was 12.5 / 2.54 cm. That is, the weft density of the dryer canvas 160 is 12.5 × 2 / 2.54 cm.
[0113]
Also, one thick weft 21 on the paper contact surface side 31 and one thick weft 24 on the paper contact surface side 32, and one thin weft 22 on the paper contact surface side 31 and one on the paper contact surface side 32. The thin wefts 25 were arranged so as to be aligned in the thickness direction of the canvas.
[0114]
In the dryer canvas 160 of the third embodiment, unlike the second embodiment, the first warp 12 weaves one thin weft 22 on the paper contact surface side 31 to form the warp knuckle 14c on the paper contact surface side 31. At the same time, one thin weft 25 on the paper-contacting surface side 32 is woven inward to form the warp knuckle 16c on the paper-contacting surface side 32, and at the same time, the second warp 13 is one piece on the paper-contacting surface side 31. The thick weft 21 is woven inward to form the warp knuckle 15c on the paper contact surface side 31, and the one thick weft 24 on the reverse paper surface 32 is woven inward to form the warp knuckle 17c on the reverse paper surface 32. The warp knuckle 14c (in the position indicated by B in the figure) is woven so that the thickness direction of the canvas is more than the paper contact surface side surface 35 defined by the warp knuckle 15c (in the position indicated by A in the figure). on the inside The warp knuckle 16c (at the position indicated by F in the figure) is located on the inner side in the thickness direction of the canvas than the surface 36 on the side opposite to the paper surface defined by the warp knuckle 17c (at the position indicated by E in the figure). This is a dryer canvas.
[0115]
The dryer canvas 160 thus manufactured has a thickness of 3.2 mm and an air permeability of 26,750 cm. ^Three /cm ² ・ It was min.
[0116]
After this dryer canvas 160 is cut to a required length, joints (warp loop seams) 111 and 111 for connecting the canvas endlessly to both ends 72 and 72 in the length direction are connected to the first embodiment. It formed by the same method. FIG. 8 is a partial cross-sectional explanatory view of the joint 111. Further, as the additional weft 28, a twisted yarn obtained by twisting two pieces of polyester polyester filaments having a cross-sectional diameter of 0.24 mmφ and twisting them two by two was used.
[0117]
Example 4
The dryer canvas 170 of Example 4 was woven with a weft double weave structure in which the specifications shown in Table 1 and the paper contact surface side shown in FIG. Made by set processing.
[0118]
The dryer canvas 170 of Example 4 is the same as that of the dryer canvas 160 of Example 3, except that the circular weft polyester monofilament (TM) having a diameter of 0.80 mmφ is applied to the thin weft 22 on the paper contact surface side 31 and the thin weft 25 on the reverse contact surface side 32. ), And the density of the wefts 21 and 22 on the paper contact surface side 31 and the density of the wefts 23 and 24 on the reverse paper surface side 32 are both 11.5 / 2. 54 cm (that is, the weft density of the canvas is 11.5 pieces × 2 / 2.54 cm), and the others are the same.
[0119]
The dryer canvas 170 thus manufactured has a thickness of 3.3 mm and an air permeability of 28,800 cm. ^Three /cm ² ・ It was min.
[0120]
After this dryer canvas 170 was cut to a required length, joints (spiral seams) 81 and 81 for connecting the canvas endlessly were formed at both ends 72 and 72 in the length direction. FIG. 5 is a partial cross-sectional explanatory view of the joint 81.
[0121]
In forming the joint (spiral seam) 81, one warp 52 of the two first warps 12 (52, 53) is extended and folded to form a loop 45a. The spiral wires 46 are meshed with each other, and the fixed core wire 48 is inserted into the common hole 47a of the meshed portion. Then, another first warp 53 in the woven fabric body, that is, the adjacent first warp 53 is extended from the end of the canvas. The traces cut and removed at the necessary positions in the vertical direction are bound with a woven structure similar to the woven structure of the woven fabric body, and one of the two second warps 13 (54, 55). One warp 54 is folded back so as to wind the respective joint end wefts 26 and 27 on the paper contact surface side 31 and the counter contact paper surface side 32 to form a loop 45b, and the loop 45b also has a spiral line. 6 and the fixed core wire 48 is inserted into the common hole 47a of the meshing portion, and then another second warp 55 in the woven structure of the woven fabric body, that is, the adjacent second warp 55 is extended in the length direction from the end of the canvas. The marks removed by cutting at appropriate positions were bound with a woven structure similar to the woven structure of the woven fabric body, and these were formed repeatedly in the width direction of the canvas. The fixed core wire 48 was a circular polyester monofilament having a diameter of 1.00 mmφ.
[0122]
(Comparative Example 1)
The dryer canvas 180 of Comparative Example 1 was woven with a weft double weave structure in which the specifications shown in Table 2 and the paper contact surface side shown in FIG. Made by set processing.
[0123]
The warp 11 was composed of a flat cross-sectional polyester monofilament (TM) having the same cross-sectional dimensions as in Example 1, and the warp density was 29.5 / 2.54 cm.
[0124]
For the weft layer 33 on the paper contact surface side 31 and the weft layer 34 on the paper contact surface side 32, wefts 23 of circular cross-section polyester monofilament (TM) having the same thickness and a diameter of 0.80 mmφ are used. The weft density was 12.3 pieces × 2 / 2.54 cm.
[0125]
The dryer canvas 180 thus manufactured has a thickness of 3.0 mm and an air permeability of 24,700 cm. ^Three /cm ² ・ It was min.
[0126]
After this dryer canvas 180 was cut to a required length, joints (warp loop seams) 181 and 181 for connecting the canvas endlessly were formed at both ends 72 and 72 in the length direction. FIG. 12 is a partial cross-sectional explanatory view of the joint 181. In forming the joint (warp loop seam) 181, one of the four first warps 11 is extended and folded to form the joining loop 40, and then inside the woven fabric of the woven fabric body. That is, in the same manner as the woven structure of the woven fabric body, the other adjacent one of the four warps 11 is cut and removed from the end of the canvas at an appropriate position in the length direction. And the other one of the four warp yarns 11 is wound from the outermost side of the frontmost weft on each of the paper contact surface side 31 and the opposite paper surface surface side 32 and folded back. In the woven structure of the woven fabric body, that is, on the trace of the remaining one of the four warp yarns 11 cut and removed from the end of the canvas at the required position in the length direction, Bind with a woven structure similar to that of the fabric body, It was formed repeatedly in the width direction of the bus.
[0127]
In addition, the air permeability mentioned above uses the measuring apparatus based on the fragile form method in JIS L1096-1999 general textiles test method, and is based on the prescription | regulation (water column 125Pa) through the air hole which has a prescription | regulation measurement area. The amount of air that passes through the test piece per unit time (cm ^Three /cm ² ・ Min) is measured.
[0128]
[Table 1]

[0129]
[Table 2]

[0130]
(Confirmation of the difference in warp knuckle on the fabric surface)
The test for confirming the difference between the warp knuckles appearing on the surface of the paper contacting side (PS) and the side of the paper contacting side (BS) of each dryer canvas of Examples 2 to 3 and Comparative Example 1 is as follows. went.
[0131]
That is, a sample is cut from each of the dryer cambers 150, 160 and 180 of Example 2, Example 3 and Comparative Example 1, and the surface state of each sample piece is measured using an Instron 5568 type universal testing device. Pressure head (circular end face, surface area 0.002m) through pressure measurement film (Fuji Prescale; manufactured by Fuji Photo Film Co., Ltd.) ² ), Pressurizing force 3,920N
The pressure measurement film was pressed under pressure conditions (1,960 kPa per unit area) and a pressurization time of 30 seconds to develop the color of the contact point of the pressure measurement film, and the condition of the surface on the paper contact surface side and the reverse paper contact surface side was confirmed.
[0132]
FIG. 13 shows the test results.
In FIG. 13, (A) shows the situation on the paper contact surface side surface (PS) of Example 2, (B) shows the situation on the reverse paper contact surface side (BS) of Example 2, and (C) shows the paper contact surface of Example 3. The state of the side surface (PS), (D) shows the state of the paper-contacting surface side (BS) of Example 3, and (E) shows the state of the paper-contacting surface side (PS) of Comparative Example 1. In addition, the black dot in each figure is the contact part which color-formed when the warp knuckle which it exposes contacts. Further, in Comparative Example 1 which is the texture of the front and back surfaces, the situation of the paper-contacting surface side (BS) was almost the same as the situation of the paper-contacting surface (PS). Only the situation was shown.
[0133]
As is apparent from the comparison of FIG. 13A and FIG. 13C with FIG. 13E, Example 2 (A) and Example 3 (C) are more in comparison with Comparative Example 1 (E). The number of warp knuckles appearing on the paper-contacting surface (PS) is reduced to ½ in the weft direction. Further, when FIG. 13B and FIG. 13D are compared with FIG. 13E, in Example 2 (B) and Example 3 (D), the surface of the paper is compared with Comparative Example 1 (E). The number of warp knuckles appearing on the side surface (BS) is reduced to ½ in the weft direction.
[0134]
As described above, in Examples 2 and 3 of the present invention, the number of warp knuckles that are exposed on the paper contact surface side or the surface on the paper contact surface side and the reverse paper contact surface side is significantly reduced as compared with Comparative Example 1. It is possible to prevent a large amount from adhering near the intersection of the warp and the weft and accumulating with time. Further, the first warp knuckle 12 on which the warp knuckle does not appear on the surface on the paper contact surface side or the paper contact surface side and the surface on the reverse contact paper surface side, and the second warp yarn 13 on which the warp knuckle does not appear on the surface on the side opposite the paper contact surface. It is possible to prevent wear damage and prevent a decrease in warp strength.
[0135]
In Examples 1 to 4, the warp density is 29.0 / 2.54 cm to 30.0 / 2.54 cm, whereas the weft density is 11.5 × 2 / 2.54 cm to 12.2. 5 threads × 2 / 2.54 cm, roughened to reduce the number of intersections between the warps 12, 13 and the wefts 21, 22, 24, 25, and the weft 21, weft 22, weft 24, and weft of different thickness 25, the number of warp knuckles that are exposed on the paper contact surface side or the surface on the paper contact surface side and on the paper contact surface side is further reduced. Adhesion is further reduced, and even if a dirt substance adheres, it can be easily removed by washing or the like.
[0136]
(Confirmation of wear)
The amount of surface wear in each of the dryer canvases of Examples 2, 4 and Comparative Example 1 was confirmed by the following method.
[0137]
That is, as a test sample, each sample piece of the dryer canvas 150 of Example 2 to Sample-1, the dryer canvas 170 of Example 4 to Sample-2, and the dryer canvas 180 of Sample 1 of Comparative Example 1 to Sample-3 was woven. A length of 30 mm × length of 500 mm was prepared from the main body portion of the fabric with the warp direction as the longitudinal direction. Next, as shown in FIG. 14, each sample piece 303 is wound around a roller 301 having a circumferential length of 400 mm with a # 400 sandpaper 302 attached to the entire circumference under a tension load of 0.5 kg / cm. Is attached so that the paper-contacting surface side of Sample-1, Sample-2, or Sample-3 is in contact with the sandpaper 302 at a holding angle of about 90 °, and the roller 301 is rotated at a constant speed of 300 times / min. The thickness dimension of each sample piece 303 was measured every minute to determine the wear amount, and the relationship between the elapsed time and the wear amount in each sample piece 303 was confirmed. Moreover, after removing each sample piece 303, the abrasion loss of the warp extract | collected from each test piece was measured.
[0138]
As a result, the amount of wear at the time point of 1 minute in each sample piece is expressed as a percentage of the original thickness, with Sample-1 having 7.3%, Sample-2 having 5.2%, and Sample-3. Is 5.0%, and the amount of wear at the time point of 10 minutes is expressed as a percentage of the original thickness. Sample-1 is 11.7%, Sample-2 is 9.9%, Sample- 3 was 10.0%.
[0139]
Further, the difference between the wear amount of Sample-1 and Sample-3 based on the wear amount per minute during the elapsed time of 1 minute to 10 minutes in each sample piece is the same for each elapsed time. 1 had a larger amount of wear by 0.07 mm to 0.08 mm than Sample-3, but the difference was almost constant throughout each elapsed time. Similarly, the difference in the amount of wear between Sample-2 and Sample-3 was 0.02 mm to 0.03 mm higher than that of Sample-3 for Sample-2 at each elapsed time. The difference was almost constant over time.
[0140]
Further, after removing each sample piece 303 at an elapsed time of 10 minutes, the amount of wear at the top of the warp knuckle on the paper contact surface side in each warp was examined. In Sample-1, the first warp 12 is 46.6%, the second warp 13 is 63.8%, and in Sample-2, the first warp 12 is 46.6% and the second warp 13 is 55.2%, and in sample-3, the warp 11 was 51.7%.
[0141]
From the above results, the dryer canvases 150 and 170 of Example 2 and Example 4 in which the number of warp knuckles appearing on the surface on the paper contact surface side is the same cross-sectional shape, the warp of the material is substantially the same warp with the same woven structure Compared to the dryer canvas 180 of Comparative Example 1 in which the number of warp knuckles exposed to the paper contact surface side surface is higher than those used in the density, the second warp yarn 13 exposed on the paper contact surface side in the early stage of wear. Since only the warp knuckle wears first, the amount of wear at the initial stage of wear is somewhat increased, and the difference in the diameter of the thick weft 21 and the thin weft 22 on the paper contact surface side is larger in Example 2. The amount of wear at the initial stage of wear is larger than that of Example 4 where the difference in wire diameter is small, but after the initial stage of wear, for example, after 1 minute of elapsed time, the rate of increase in the amount of wear per elapsed time is large. No difference, eventually Wear at about the same rate it was found that progresses.
[0142]
Furthermore, in Example 2 and Example 4, the amount of wear of the first warp 12 where the warp knuckle on the paper contact surface side is located on the inner side in the thickness direction of the woven fabric is less than that of the second warp 13, so It has been found that it is possible to prevent a decrease in strength due to wear damage of one warp 12. Furthermore, it was found that the wear amount of the first warp 12 in Example 2 and Example 4 was smaller than the wear amount of the warp 11 of Comparative Example 1 at the same elapsed time.
[0143]
Therefore, if a joint is formed by using a part or all of the first warp 12 on the loop forming warp in which the traction force and tension for driving the industrial conveyor belt are concentrated, the strength of the loop forming warp is reduced. In addition, it is possible to avoid the deterioration of the surface property of the joint part and the risk of adversely affecting the product quality of the paper sheet, thereby extending the use period.
[0144]
In addition, in the actual use, each dryer canvas of the above Examples 1 to 4 had less adhesion of dirt substances to the surface than the dryer canvas of Comparative Example 1.
[0145]
【The invention's effect】
According to the present invention, in industrial belts such as paper machine dryer canvas and paper machine conveyor belts woven with synthetic fiber monofilament warp and weft, at least the weft layer on the paper contact side is thick. The wefts of different thicknesses are alternately arranged, and the warp is woven into one thin weft on the paper-contacting side to form a warp knuckle on the paper-contacting side, and one weft on the paper-contacting side is inward. A first warp that weaves to form a warp knuckle on the side of the paper-contacting surface, and one thick weft on the side of the paper-contacting surface that weaves inside to form a warp knuckle on the side of the paper-contacting surface, And a second warp that forms a warp knuckle on the side opposite to the paper surface, and the warp knuckle formed by the first warp on the paper side is more woven than the surface of the paper side Located inside the thickness direction As a result, at least the number of warp knuckles appearing on the surface of the paper-contacting surface is reduced, the antifouling property and the removal property of dirt substances by washing are superior to the conventional ones, and the wear on the surface of the paper-contacting surface is at least Decrease in warp strength due to damage or wear damage due to superposition of high temperature and high humidity conditions, and it can prevent deterioration of surface properties on the paper contact side due to increased adhesion and accumulation of dirt materials, Product dryer canvas and paper machine conveyor belt that can maintain product quality over a longer period of time, prevent deterioration of form retention performance and running performance, and extend the usage period compared to conventional ones Industrial belts such as various industrial conveyor belts can be realized.
[0146]
Further, according to the present invention, the warp loop seam forming the joining loop in the warp loop seam or the loop for meshing the spiral line in the spiral seam is used to prevent abrasion damage on the paper contact surface side surface or the paper contact surface side and the reverse paper contact surface side surface. Since the first warp has been prevented, there is a risk of early breakage in the joint due to a decrease in strength of the warp forming the loop, and looseness, roughness, and contamination of the joint portion. It is possible to avoid the deterioration of the surface property of the joint part due to adhesion / deposition and the risk of adversely affecting the product quality of the paper sheet. It becomes possible to maintain the product quality for a longer period and to extend the use period of the industrial belt.
[0147]
In addition, according to the present invention, a synthetic fiber monofilament made of a material having excellent heat resistance and / or wear resistance is used for at least one of the first warp and the second warp, and / or Since the synthetic fiber monofilament made of a material having excellent heat resistance and / or wear resistance is used for at least the thick weft in the weft layer on the paper-contacting surface side, the above-described improvement effect of heat resistance and / or wear resistance is further strengthened. .
[0148]
Further, according to the present invention, since the synthetic fiber monofilament made of a material excellent in heat resistance and antifouling property is used for at least the thick weft of the weft layer on the paper contact surface side, the effect of improving the antifouling property is further remarkable. It becomes.
[Brief description of the drawings]
FIG. 1 is a first embodiment of the present invention. (Reference example) It is sectional explanatory drawing of the warp direction which showed the woven structure of the industrial belt which concerns on an example in.
FIG. 2 is a second embodiment of the present invention. (Reference example) It is sectional explanatory drawing of the warp direction which showed the woven structure of the industrial belt which concerns on an example in.
FIG. 3 is a cross-sectional explanatory view in the warp direction showing a woven structure of an industrial belt according to an example of the third embodiment of the present invention.
FIG. 4 is a fourth embodiment of the present invention. (Reference example) It is a fragmentary sectional explanatory view showing the joint of the industrial belt concerning an example in.
FIG. 5 is a fifth embodiment of the present invention. (Reference example) It is a fragmentary sectional explanatory view showing the joint of the industrial belt concerning an example in.
FIG. 6 is a partial cross-sectional explanatory view showing an industrial belt joint according to an example of a sixth embodiment of the present invention.
FIG. 7 shows a seventh embodiment of the present invention. (Reference example) It is a fragmentary sectional explanatory view showing the joint of the industrial belt concerning an example in.
FIG. 8 is a partial cross-sectional explanatory view showing a joint of an industrial belt according to an example of an eighth embodiment of the present invention.
FIG. 9 shows a ninth embodiment of the present invention. (Reference example) It is a fragmentary sectional explanatory view showing the joint of the industrial belt concerning an example in.
FIG. 10 is a partial cross-sectional explanatory view showing an industrial belt joint according to an example of the tenth embodiment of the present invention.
FIG. 11 is a cross-sectional explanatory view in the warp direction showing a woven structure of an industrial belt according to a comparative example of the present invention.
FIG. 12 is a partial cross-sectional explanatory view of an industrial belt having a joint according to a comparative example of the present invention.
FIG. 13 is a test for confirming the difference in warp knuckles exposed on the surface of the fabric for the industrial belts of Examples and Comparative Examples of the present invention. In the figure shown,
(A) is the situation of the paper contact surface side surface of Example 2,
(B) is the situation of the surface on the side opposite to the paper surface of Example 2,
(C) is the situation on the surface of the paper contact surface of Example 3,
(D) is the situation of the surface on the side opposite to the paper surface of Example 3,
(E) shows the situation of the surface on the paper contact surface side of the comparative example.
FIG. 14 is a schematic view of an apparatus used for a surface abrasion amount confirmation test for industrial belts of the present invention and comparative examples.

Claims (5)

An industrial belt made of a woven fabric using warp and weft of synthetic monofilament,
The weft layer has at least two weft layers including a weft layer on the paper-contact side and a weft layer on the counter-contact side;
Wherein both layers of contact paper side layer and the counter-contact paper side weft of the weft is made by arranging the different wefts of thicknesses alternately,
A first warp in which a warp is woven into one thin weft on the paper contact surface side and one thin weft on the paper contact surface side to form warp knuckles on the paper contact surface side and the paper contact surface side; and the paper contact surface A second warp that weaves one thick weft on the side and one thick weft on the paper-contacting surface side to form a warp knuckle on the paper- contacting side and the paper- contacting surface side,
Warp knuckle of the first warp is formed on the contact paper side and Hanse' paper side, the second warp contact the paper side surface and anti defined by warp knuckles that form the contact paper side and Hanse' paper side Located on the inner side in the thickness direction of the woven fabric than the surface on the paper-contacting side ,
Furthermore, an industrial belt characterized in that a synthetic fiber monofilament made of a material having heat resistance and / or wear resistance superior to that of the first warp is used for the second warp. A synthetic fiber monofilament made of a material having heat resistance higher than that of the first warp in the at least the thick weft in the weft layer on the paper contact surface side and the weft layer on the paper contact surface side. The industrial belt according to claim 1, wherein: Of the weft layers on the paper-contacting surface side and the paper-contacting surface side, at least the thick wefts in the weft layer on the paper-contacting surface side are made of a material superior in heat resistance and antifouling properties than the first warp. The industrial belt according to claim 1, wherein the synthetic fiber monofilament is used. The industrial belt extends a part of the warp constituting the woven fabric and folds back to form a joining loop, which is then bound into the woven structure of the woven fabric body, and this loop train is meshed with each other. An industrial belt having joints for connecting the woven fabric endlessly by inserting the joining core wire into the common hole formed at both ends in the longitudinal direction of the woven fabric,
After forming the folded back joining loops claim 1-3, characterized in that the warp Komu spelling in weave woven fabric body is formed by a part or all of the first warp An industrial belt according to any one of the above. After the industrial belt extends a part of the warp constituting the woven fabric, turns it back to form a loop, meshes the spiral wire with the loop, and inserts the fixed core wire into the common hole of the meshing portion. In order to connect the woven fabric in an endless manner by inserting the joint core wire into a common hole between the spiral wires, which are bound in the woven structure of the woven fabric main body and further meshed with each other. An industrial belt having joints at both longitudinal ends of a woven fabric,
The industrial belt according to any one of claims 1 to 3 , wherein a warp forming a loop for meshing the spiral lines is formed by using a part or all of the first warp. .

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