JPS6210830B2 - - Google Patents
Info
- Publication number
- JPS6210830B2 JPS6210830B2 JP57108756A JP10875682A JPS6210830B2 JP S6210830 B2 JPS6210830 B2 JP S6210830B2 JP 57108756 A JP57108756 A JP 57108756A JP 10875682 A JP10875682 A JP 10875682A JP S6210830 B2 JPS6210830 B2 JP S6210830B2
- Authority
- JP
- Japan
- Prior art keywords
- needle
- ceramic fiber
- fibers
- layered
- lubricant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000835 fiber Substances 0.000 claims description 73
- 239000000919 ceramic Substances 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 27
- 239000000314 lubricant Substances 0.000 claims description 17
- 238000004080 punching Methods 0.000 claims description 14
- 239000003831 antifriction material Substances 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- 239000000463 material Substances 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 5
- 239000012784 inorganic fiber Substances 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000014593 oils and fats Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/06—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B30/00—Compositions for artificial stone, not containing binders
- C04B30/02—Compositions for artificial stone, not containing binders containing fibrous materials
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/105—Ceramic fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/718—Weight, e.g. weight per square meter
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
- Nonwoven Fabrics (AREA)
Description
アルミナとシリカを主成分としたセラミツクフ
アイバーブランケツトの製造法としては、特公昭
40−153号公報に示されるように、カオリンのよ
うな原料を溶融して細流として流下せしめ、これ
をブローイング法、スピンニング法等により繊維
とし、これを空気流で集綿室に持ち込む途中で減
摩剤を施してベルトコンベア上に層状に乗せ、上
下両面を金網で挾み加圧した状態で加熱して減摩
剤を除去する方法が公知である。これは減摩剤を
施さずに、単に圧縮しただけの層状体は繊維相互
の係止力がなく、容易に分離するような取扱いに
くい極めて強度の小さい層状体しか得られない
が、減摩剤を施して圧縮状態で、減摩剤を除去す
ると、繊維間のからみ合いを保つように圧縮され
たままとなり、取扱い得る程度に強度を有する層
状体が得られるからである。
この方法によつて、厚さ約５mm以下のセラミツ
クフアイバーブランケツトを製造すると、減摩剤
の揮散をし易くするため、加圧体として金網のコ
ンベアを使用しているので、金網表面の凹凸跡が
セラミツクフアイバーブランケツトの両面に残
り、凹部がすけて見えるように薄くなつてしまい
均一な厚さのものを製造することができない。こ
のため薄いセラミツクフアイバーのシートは、繊
維長さを水中に均一に分散しうるように短かくし
て、水中に分散させ、これに結合剤を加えて抄紙
法によつて製造されている。この湿式法による場
合、繊維を短かくするとき繊維の粉を生じ繊維の
利用効率が悪くなると共に製造に手数を要する。
本発明は、数mmの厚さの強度の大きいセラミツ
クフアイバーブランケツトを簡単な工程で容易に
製造しうる方法を供することを目的とするもので
ある。
本発明はこの目的を達するために、アルミナ35
〜65重量％、シリカ35〜65重量％、10重量％以下
のその他金属酸化物からなり、減摩剤を含有せし
めたセラミツクフアイバーの層状集積体の片面ま
たは両面に有機繊維ウエブを重ね合わせた積層体
を、ニードルパンチ処理し、これに引続き無加圧
下で減摩剤と有機繊維ウエブの焼却除去を行なう
ようにしたものである。
特公昭52−43946号公報に示されるように減摩
剤の施されたセラミツクフアイバー層状集積体に
ニードルパンチ処理を施し、加圧下で減摩剤を除
去したブランケツトは、ニードルパンチ処理をし
ないで、加圧下減摩剤を除去して作つたブランケ
ツトよりも、引張り強さの大きいものが得られ
る。しかしこの方法においても減摩剤除去の際の
加圧部材としてメツシユコンベアを使用するので
薄物を製造すると均一な厚さのものが得られな
い。また、この方法で、ニードルパンチ密度を大
にして、より引張り強さの大きいものを得ようと
してニードルパンチ密度40本／cm2以上ニードルパ
ンチを施すと、四方に伸び破れを生ずるようにな
る。薄物は厚物よりも薄いだけに全体としての引
張り強さが小さい。これを厚物と同様な引張り強
さとなるように、この方法でニードルパンチ密度
を多くしても破れるだけである。
一方特開昭50−77665号公報には、減摩剤を含
有しない不織無機繊維マツトに不織有機繊維ウエ
ブを重ねてニードルパンチ処理を行なうことが示
されている。
この方法は有機繊維によつて不織無機繊維マツ
トを縫うものであつて、同公報５頁右上欄14〜18
行に記載されているように、有機繊維を除去した
場合には、無機繊維マツトはその復元性によつて
元のかさ密度に回復する。即ちこの記述は、この
方法では無機繊維のからみ合いを生ぜしめないこ
とを示すものである。
これら公知の技術に対し本発明は、減摩剤を含
有せしめたセラミツクフアイバー層状集積体に有
機繊維ウエブを重ね合わせ、この積層体にニード
ルパンチを施した場合には、セラミツクフアイバ
ー層状集積体に破れを生ずることなく、従来の上
記した公知の方法における場合よりも、単位面積
当りのニードルパンチ数を多くすることが可能で
あり、ニードルパンチ処理後に、減摩剤を無加圧
下で除去し次いで有機繊維ウエブを除去しても、
ニードルパンチによるセラミツクフアイバー相互
のからみ合いを保つたブランケツトあるいはフエ
ルト状のものが得られることを見出したものであ
る。
減摩剤を含有せしめたセラミツクフアイバー層
状集積体のみにニードルパンチを施した場合に
は、ニードルパンチ密度40本／cm2以上で、セラミ
ツクフアイバー層状集積体に破れを生ずるのに、
本発明方法によれば、ニードルパンチ密度をこれ
よりかなり多くしても破れを生じない。その理由
は明らかでないが、恐らく、有機繊維がセラミツ
クフアイバー中にニードルによつて引き込まれる
とき、有機繊維が緩衝材となり、ニードルがセラ
ミツクフアイバーに与える衝撃を緩衝し、セラミ
ツクフアイバーが切れるのを防ぐためではないか
と考えられる。
本発明では減摩剤を含有し、ニードルパンチ処
理されたセラミツクフアイバー層状集積体を無圧
縮の状態で減摩剤の除去を行ない、更に有機繊維
ウエブの焼却除去を行なつてもセラミツクフアイ
バー層状集積体は、ニードルパンチ処理前のかさ
密度に戻らず、ニードルパンチ処理を施した効果
を繊維し引張り強度の大きいものとなる。この理
由は、有機繊維によつてセラミツクフアイバー層
状集積体が縫い締められている状態で減摩剤が除
去されるので、特に加圧状態で減摩剤を除去しな
くてもセラミツクフアイバーに与えたニードルパ
ンチ処理効果が維持されるものと考えられる。
減摩剤としては通常油脂類が用いられる。従つ
て有機繊維が燃える前に加熱によつて揮散し、減
摩剤の加熱による揮散中には有機繊維のセラミツ
クフアイバーに対する締めつけ効果が維持され
る。
有機繊維ウエブは長さ30〜100mmの通常1.5〜５
デニールの綿をカードして密度30ｇ／m2以上のも
のを作りうる。本発明ではカードしたままのウエ
ブでも使用できるが、取り扱いし易くするために
これにニードルパンチを施したものを用いるのが
良く、密度30ｇ／m2のものでも充分使用できる。
本発明方法において積層体にニードルパンチ処
理をする場合、厚さ５mm以下のセラミツクフアイ
バーブランケツトであつて、厚さがほぼ均一で、
充分な引張り強さのものは、従来行なえなかつた
ニードルパンチ密度50〜200本／cm2のニードルパ
ンチ処理を行なうことによつて得られる。しかし
これより厚さの厚いセラミツクフアイバーブラン
ケツトの製造にも本発明を適用できることは云う
までもない。
以下本発明を実施例について説明する。
アルミナ48重量％、シリカ52重量％と微量の不
純物からなる組成の原料を電気炉で溶融しブロー
イング法で繊維化した。このセラミツクフアイバ
ーを空気流で集綿室に入れる際に、脂肪酸アミン
アセテート（商品名アーマツクHT）１に容量で
５の割合のケロシン混合物を0.5重量％の水エマ
ルジヨンとした減摩剤を噴霧し、ベルトコンベア
上に層状に集積してセラミツクフアイバー層状集
積体を得た。この集積体の密度は減摩剤なしで約
530ｇ／m2、繊維の平均直径2.8μｍ、長さは最長
約250mmであつた。
繊維太さ３デニール、長さ76mmのポリエステル
繊維をカードしてウエブとし、ニードルパンチ密
度80本／cm2にてプレパンチした密度50ｇ／m2のウ
エブを、ロールから引き出し、上記のセラミツク
フアイバー層状集積体の上下両面または上面に積
層して、ニードルパンチング装置に送り、上下両
面から種々のニードルパンチ密度でニードルパン
チを施した。
かく処理した積層体を加熱炉に入れ500℃で30
分間無加圧下で加熱し、減摩剤及びポリエステル
繊維を順次焼却除去した。かくして得られたセラ
ミツクフアイバーブランケツト（シート）の厚
さ、かさ比重、面積当り重量、引張り強度は次の
如くであつた。
The method for manufacturing ceramic fiber blankets, which are mainly composed of alumina and silica, is
As shown in Publication No. 40-153, a raw material such as kaolin is melted and made to flow down as a trickle, and this is made into fibers by a blowing method, a spinning method, etc., and on the way to the cotton collection room by an air flow. A known method is to apply an anti-friction agent, place the material in layers on a belt conveyor, sandwich the upper and lower surfaces with wire mesh, and heat the material under pressure to remove the anti-friction agent. This is because a layered material that is simply compressed without applying an anti-friction agent has no locking force between the fibers, and is difficult to handle and easily separates, resulting in a layered material with extremely low strength. This is because when the anti-friction agent is removed in a compressed state, the fiber remains compressed so as to maintain the intertwining between the fibers, resulting in a layered material that is strong enough to be handled. When a ceramic fiber blanket with a thickness of approximately 5 mm or less is manufactured using this method, a wire mesh conveyor is used as a pressurizing body to facilitate the volatilization of the lubricant, so there will be no unevenness marks on the surface of the wire mesh. remains on both sides of the ceramic fiber blanket, making it so thin that the recesses are visible, making it impossible to manufacture one with a uniform thickness. For this reason, thin ceramic fiber sheets are produced by shortening the length of the fibers so that they can be uniformly dispersed in water, dispersing the fibers in water, and adding a binder to the fibers by a papermaking method. In the case of this wet method, when the fibers are shortened, fiber powder is generated, which impairs the utilization efficiency of the fibers and requires a lot of effort in production. SUMMARY OF THE INVENTION An object of the present invention is to provide a method for easily manufacturing a highly strong ceramic fiber blanket with a thickness of several mm through simple steps. The present invention aims to achieve this objective by using alumina 35
A laminate in which an organic fiber web is laminated on one or both sides of a layered assembly of ceramic fibers containing ~65% by weight, silica 35-65% by weight, and 10% by weight or less of other metal oxides and containing an anti-friction agent. The body is needle-punched, followed by the removal of the lubricant and the organic fiber web by incineration under no pressure. As shown in Japanese Patent Publication No. 52-43946, a blanket made by needle-punching a layered ceramic fiber aggregate coated with a lubricant and removing the lubricant under pressure is made without needle-punching. Greater tensile strength is obtained than blankets made by removing the lubricant under pressure. However, even in this method, a mesh conveyor is used as a pressurizing member during the removal of the anti-friction agent, so when manufacturing thin products, it is not possible to obtain products of uniform thickness. In addition, when using this method to increase the needle punch density to obtain a product with higher tensile strength, if the needle punch density is greater than 40 needle punches/cm 2 or more, stretching and tearing will occur in all directions. Since thin materials are thinner than thick materials, their overall tensile strength is lower. Even if you use this method to increase the needle punch density so that it has the same tensile strength as a thick material, it will only break. On the other hand, JP-A-50-77665 discloses that a nonwoven organic fiber web is layered on a nonwoven inorganic fiber mat containing no lubricant and subjected to needle punching. This method is to sew a non-woven inorganic fiber mat with organic fibers, page 5, upper right column 14-18 of the same publication.
As described in the column, when the organic fibers are removed, the inorganic fiber mat recovers its original bulk density due to its restorability. That is, this description indicates that this method does not cause entanglement of inorganic fibers. In contrast to these known techniques, the present invention provides that when an organic fiber web is superimposed on a layered ceramic fiber assembly containing an anti-friction agent and a needle punch is applied to this laminate, the ceramic fiber layered assembly is torn. It is possible to increase the number of needle punches per unit area than in the conventional above-mentioned known method without causing any Even if the fibrous web is removed,
It has been discovered that a blanket or felt-like product can be obtained in which ceramic fibers are intertwined with each other by needle punching. When needle punching is performed only on a layered ceramic fiber assembly containing an anti-friction agent, the ceramic fiber layered assembly will break at a needle punch density of 40 punches/cm 2 or more;
According to the method of the present invention, even if the needle punch density is significantly higher than this, tearing does not occur. The reason for this is not clear, but it is probably because when the organic fiber is drawn into the ceramic fiber by the needle, the organic fiber acts as a buffer, buffering the impact that the needle gives to the ceramic fiber, and preventing the ceramic fiber from breaking. It is thought that this is the case. In the present invention, even if the lubricant is removed from a needle-punched ceramic fiber layered aggregate containing an anti-friction agent in an uncompressed state, and the organic fiber web is further removed by incineration, the ceramic fiber layered aggregate is obtained. The body does not return to the bulk density before the needle punching process, and the fibers retain the effect of the needle punching process, resulting in a high tensile strength. The reason for this is that since the lubricant is removed while the ceramic fiber layered assembly is sewn together with organic fibers, the lubricant can be applied to the ceramic fiber without being removed under pressure. It is considered that the effect of the needle punch treatment is maintained. Oils and fats are usually used as anti-friction agents. Therefore, the organic fibers are volatilized by heating before burning, and the tightening effect of the organic fibers on the ceramic fiber is maintained while the lubricant is volatilized by heating. Organic fiber web is usually 1.5 to 5 mm in length from 30 to 100 mm.
Denier cotton can be carded to have a density of 30 g/m 2 or more. Although a carded web can be used in the present invention, it is preferable to use a web that has been needle punched for ease of handling, and a web with a density of 30 g/m 2 can also be used satisfactorily. When needle-punching a laminate in the method of the present invention, the ceramic fiber blanket has a thickness of 5 mm or less and has a substantially uniform thickness;
Sufficient tensile strength can be obtained by needle punching at a needle punch density of 50 to 200 punches/cm 2 , which has not been possible in the past. However, it goes without saying that the present invention can also be applied to the manufacture of ceramic fiber blankets having a greater thickness. The present invention will be described below with reference to Examples. A raw material consisting of 48% by weight alumina, 52% by weight silica, and a small amount of impurities was melted in an electric furnace and made into fibers by blowing. When introducing this ceramic fiber into the cotton collecting chamber with an air stream, a lubricant containing a mixture of fatty acid amine acetate (trade name Armac HT) in a ratio of 5 parts by volume of kerosene to 0.5% by weight water emulsion was sprayed. The ceramic fibers were stacked in layers on a belt conveyor to obtain a layered ceramic fiber assembly. The density of this aggregate without lubricant is approximately
The weight was 530 g/m 2 , the average fiber diameter was 2.8 μm, and the longest length was about 250 mm. Polyester fibers with a fiber thickness of 3 denier and a length of 76 mm are carded to form a web, and the web with a density of 50 g/m 2 pre-punched at a needle punch density of 80 lines/cm 2 is pulled out from the roll to form the above ceramic fiber layered stack. The layers were laminated on both the upper and lower surfaces or the upper surface of the body, and sent to a needle punching device, where needle punching was performed from both the upper and lower surfaces at various needle punch densities. The thus treated laminate was placed in a heating furnace at 500℃ for 30 minutes.
The antifriction agent and polyester fibers were sequentially incinerated and removed by heating under no pressure for a minute. The thickness, bulk specific gravity, weight per area, and tensile strength of the ceramic fiber blanket (sheet) thus obtained were as follows.
【表】
これに対し特公昭52−43946号公報に示した方
法、即ち減摩剤を施したセラミツクフアイバー層
状集積体に有機繊維ウエブを積層することなくニ
ードルパンチを施し、加圧状態で減摩剤を除去す
る方法の場合には、ニードルパンチ密度約20本／
cm2の場合に得られたブランケツトの引張り強度は
最高となるが、この条件においても、かさ比重
0.13で厚さ６mmのものの引張り強度は0.35Kg／cm2
であつた。
また上記実施例に用いたセラミツクフアイバー
層状集積体に減摩剤を施して有機繊維ウエブを積
層することなくニードルパンチをした処、ニード
ルパンチ密度40本／cm2でセラミツクフアイバー層
状集積体に破れを生じた。
本発明方法によれば、従来得られなかつた引張
り強度の大きいセラミツクフアイバーブランケツ
トが得られ、抄紙法以外の方法では得られなかつ
た薄物が得られる。しかし、実施例に示すように
４mm位より薄い物を作る場合には、ニードルパン
チ密度が200本／cm2にもなると引張り強度が150
本／cm2のものより低下しセラミツクフアイバーブ
ランケツト中のフアイバーの劣化が始まるので、
ニードルパンチ密度はこの密度位までに止めるの
が良い。本発明法において積層される有機繊維ウ
エブにも必要なら減摩剤を施しても良い。
本発明方法によつて得られたブランケツトは通
常は上記実施例に示すように有機繊維を焼却して
セラミツクフアイバーのみからなる製品として使
用されるが、必要なら減摩剤のみを除去して有機
繊維ウエブを付けたまま使用したり、使用中の加
熱により焼却除去してもよい。[Table] On the other hand, there is a method shown in Japanese Patent Publication No. 52-43946, in which needle punching is applied to a layered ceramic fiber aggregate coated with a lubricant without laminating an organic fiber web to reduce friction under pressure. In the case of the method of removing the agent, the needle punch density is approximately 20 needles/
cm2 , the tensile strength of the blanket obtained is the highest, but even under this condition, the bulk specific gravity
The tensile strength of 0.13 and 6mm thick is 0.35Kg/cm 2
It was hot. Furthermore, when the ceramic fiber layered assembly used in the above example was needle-punched without applying a lubricant and layered with an organic fiber web, the ceramic fiber layered assembly was not torn at a needle punch density of 40 pieces/cm 2 . occured. According to the method of the present invention, a ceramic fiber blanket with a high tensile strength that could not be obtained conventionally can be obtained, and a thin product that could not be obtained by methods other than papermaking methods can be obtained. However, as shown in the example, when making something thinner than about 4 mm, the tensile strength is 150 when the needle punch density is 200 punches/ cm2.
fibers in the ceramic fiber blanket begin to deteriorate.
It is best to limit the needle punch density to this level. The organic fiber web laminated in the method of the present invention may also be coated with a lubricant, if necessary. The blanket obtained by the method of the present invention is normally used as a product consisting only of ceramic fibers by incinerating the organic fibers as shown in the above embodiments, but if necessary, only the lubricant can be removed and organic fibers can be used. It may be used with the web still attached, or it may be incinerated and removed by heating during use.
Claims (1)
％、10重量％以下のその他の金属酸化物とからな
り減摩剤を含有せしめたセラミツクフアイバーの
層状集積体の片面または両面に有機繊維ウエブを
重ね合わせた積層体を、ニードルパンチ処理し、
ニードルパンチ処理に引続き、無加圧下で減摩剤
と有機繊維ウエブの焼却除去を行なうことを特徴
とするセラミツクフアイバーブランケツトの製造
法。 ２ ニードルパンチ密度50〜200本／cm2の範囲で
ニードルパンチ処理を行なう特許請求の範囲１項
記載のセラミツクフアイバーブランケツトの製造
法。[Claims] 1. One side of a layered assembly of ceramic fibers comprising 35 to 65% by weight of alumina, 35 to 65% by weight of silica, and 10% by weight or less of other metal oxides and containing an anti-friction agent, or A laminate with organic fiber webs layered on both sides is needle punched,
A method for manufacturing a ceramic fiber blanket, which is characterized in that, following needle punching, a lubricant and an organic fiber web are incinerated and removed under no pressure. 2. The method for producing a ceramic fiber blanket according to claim 1, wherein needle punching is performed at a needle punch density in the range of 50 to 200 needle punches/cm 2 .
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57108756A JPS593079A (en) | 1982-06-24 | 1982-06-24 | Manufacture of ceramic fiber blanket |
| GB08222592A GB2122537B (en) | 1982-06-24 | 1982-08-05 | Ceramic fibre blanket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57108756A JPS593079A (en) | 1982-06-24 | 1982-06-24 | Manufacture of ceramic fiber blanket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS593079A JPS593079A (en) | 1984-01-09 |
| JPS6210830B2 true JPS6210830B2 (en) | 1987-03-09 |
Family
ID=14492703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57108756A Granted JPS593079A (en) | 1982-06-24 | 1982-06-24 | Manufacture of ceramic fiber blanket |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS593079A (en) |
| GB (1) | GB2122537B (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4522876A (en) * | 1984-07-05 | 1985-06-11 | Lydall, Inc. | Integral textile composite fabric |
| US4752515A (en) | 1985-06-17 | 1988-06-21 | Mitsubishi Chemical Industries | Alumina fiber structure |
| US5332699A (en) * | 1986-02-20 | 1994-07-26 | Manville Corp | Inorganic fiber composition |
| JPH01162181A (en) * | 1987-12-18 | 1989-06-26 | Tokyo Keiki Co Ltd | Supersonic transducer for high temperatures |
| US5994247A (en) * | 1992-01-17 | 1999-11-30 | The Morgan Crucible Company Plc | Saline soluble inorganic fibres |
| HU218828B (en) | 1992-01-17 | 2000-12-28 | The Morgan Crucible Co. Plc. | Saline soluble inorganic fibres |
| US5401693A (en) * | 1992-09-18 | 1995-03-28 | Schuller International, Inc. | Glass fiber composition with improved biosolubility |
| DE69432866T2 (en) | 1993-01-15 | 2003-12-24 | The Morgan Crucible Co. Plc., Windsor | Inorganic fibers soluble in saline |
| US5811360A (en) | 1993-01-15 | 1998-09-22 | The Morgan Crucible Company Plc | Saline soluble inorganic fibres |
| GB9508683D0 (en) * | 1994-08-02 | 1995-06-14 | Morgan Crucible Co | Inorganic fibres |
| US5928975A (en) * | 1995-09-21 | 1999-07-27 | The Morgan Crucible Company,Plc | Saline soluble inorganic fibers |
| GB2341607B (en) | 1998-09-15 | 2000-07-19 | Morgan Crucible Co | Bonded fibrous materials |
| AU769172B2 (en) | 1999-09-10 | 2004-01-15 | Morgan Crucible Company Plc, The | High temperature resistant saline soluble fibres |
| ATE534614T1 (en) | 2001-10-09 | 2011-12-15 | 3M Innovative Properties Co | COMPOSITIONS CONTAINING BIOSOLUBLE INORGANIC FIBERS AND MICA BINDERS |
| GB2383793B (en) | 2002-01-04 | 2003-11-19 | Morgan Crucible Co | Saline soluble inorganic fibres |
| US7875566B2 (en) | 2004-11-01 | 2011-01-25 | The Morgan Crucible Company Plc | Modification of alkaline earth silicate fibres |
| JP5499644B2 (en) * | 2009-11-06 | 2014-05-21 | 三菱樹脂株式会社 | Inorganic fiber molded body and method for producing the same |
| CN108842294A (en) * | 2018-07-23 | 2018-11-20 | 淄博晨阳耐火制品有限公司 | Super fire resistant roller shutter door ceramic fibre blanket producing process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5077665A (en) * | 1973-10-30 | 1975-06-25 | ||
| JPS5182306A (en) * | 1974-12-04 | 1976-07-19 | Nippon Asbestos Co Ltd | |
| JPS5243946A (en) * | 1975-10-03 | 1977-04-06 | Meidensha Electric Mfg Co Ltd | Cooling device |
| JPS52148274A (en) * | 1976-06-02 | 1977-12-09 | Toshiba Monofrax | Manufacture of high strength ceramic fiber blanket |
-
1982
- 1982-06-24 JP JP57108756A patent/JPS593079A/en active Granted
- 1982-08-05 GB GB08222592A patent/GB2122537B/en not_active Expired
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5077665A (en) * | 1973-10-30 | 1975-06-25 | ||
| JPS5182306A (en) * | 1974-12-04 | 1976-07-19 | Nippon Asbestos Co Ltd | |
| JPS5243946A (en) * | 1975-10-03 | 1977-04-06 | Meidensha Electric Mfg Co Ltd | Cooling device |
| JPS52148274A (en) * | 1976-06-02 | 1977-12-09 | Toshiba Monofrax | Manufacture of high strength ceramic fiber blanket |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2122537A (en) | 1984-01-18 |
| JPS593079A (en) | 1984-01-09 |
| GB2122537B (en) | 1985-11-13 |
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