JP2014210596A - Favorite beverage extract bag - Google Patents
Favorite beverage extract bag Download PDFInfo
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- JP2014210596A JP2014210596A JP2013087644A JP2013087644A JP2014210596A JP 2014210596 A JP2014210596 A JP 2014210596A JP 2013087644 A JP2013087644 A JP 2013087644A JP 2013087644 A JP2013087644 A JP 2013087644A JP 2014210596 A JP2014210596 A JP 2014210596A
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- weft
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- 235000013361 beverage Nutrition 0.000 title claims abstract description 21
- 239000004744 fabric Substances 0.000 claims abstract description 53
- 239000000306 component Substances 0.000 claims abstract description 37
- 238000002844 melting Methods 0.000 claims abstract description 36
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 24
- 239000004626 polylactic acid Substances 0.000 claims abstract description 24
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 21
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 21
- 239000008358 core component Substances 0.000 claims abstract description 17
- 238000009941 weaving Methods 0.000 claims abstract description 3
- 230000008018 melting Effects 0.000 claims description 34
- 238000003466 welding Methods 0.000 claims description 32
- 238000000605 extraction Methods 0.000 claims description 19
- 239000002759 woven fabric Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 abstract description 9
- 238000007789 sealing Methods 0.000 abstract description 4
- 239000012943 hotmelt Substances 0.000 abstract 1
- JVTAAEKCZFNVCJ-REOHCLBHSA-N L-lactic acid Chemical compound C[C@H](O)C(O)=O JVTAAEKCZFNVCJ-REOHCLBHSA-N 0.000 description 12
- 235000016213 coffee Nutrition 0.000 description 8
- 235000013353 coffee beverage Nutrition 0.000 description 8
- 239000000843 powder Substances 0.000 description 7
- 229930182843 D-Lactic acid Natural products 0.000 description 6
- JVTAAEKCZFNVCJ-UWTATZPHSA-N D-lactic acid Chemical compound C[C@@H](O)C(O)=O JVTAAEKCZFNVCJ-UWTATZPHSA-N 0.000 description 6
- 230000008602 contraction Effects 0.000 description 6
- 229940022769 d- lactic acid Drugs 0.000 description 6
- 244000269722 Thea sinensis Species 0.000 description 5
- 230000004927 fusion Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000007334 copolymerization reaction Methods 0.000 description 3
- 235000013616 tea Nutrition 0.000 description 3
- 235000006468 Thea sinensis Nutrition 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000000635 electron micrograph Methods 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 240000007154 Coffea arabica Species 0.000 description 1
- 235000020279 black tea Nutrition 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000009569 green tea Nutrition 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 235000020333 oolong tea Nutrition 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920001432 poly(L-lactide) Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
- B65D85/804—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package
- B65D85/808—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package for immersion in the liquid to release part or all of their contents, e.g. tea bags
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D1/00—Woven fabrics designed to make specified articles
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
- D03D15/47—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads multicomponent, e.g. blended yarns or threads
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
- D10B2331/041—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET] derived from hydroxy-carboxylic acids, e.g. lactones
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
- Woven Fabrics (AREA)
- Bag Frames (AREA)
- Tea And Coffee (AREA)
- Apparatus For Making Beverages (AREA)
Abstract
Description
本発明は、コーヒー粉や茶葉等を収納してなる嗜好性飲料抽出袋に関し、コーヒー、緑茶、紅茶又は烏龍茶を抽出するための嗜好性飲料抽出袋に関するものである。 The present invention relates to a palatable beverage extraction bag containing coffee powder, tea leaves and the like, and relates to a palatable beverage extraction bag for extracting coffee, green tea, black tea or oolong tea.
コーヒー粉や茶葉等を収納してなる嗜好性飲料抽出袋は、たとえば、通水性熱可塑性基布を用いて以下の方法で製造されている。すなわち、一枚の通水性熱可塑性基布を二つ折りに重ね合わせるか、又は二枚の同形状の通水性熱可塑性基布を重ね合わせ、その間にコーヒー粉等を挿入し、重ね合わせ端縁を溶着する方法で製造されている。この際、通水性熱可塑性基布としては、ポリエステルフィラメント糸やポリ乳酸フィラメント糸を経糸及び緯糸とした織物が用いられており、特に高融点成分を芯成分とし低融点成分を鞘成分とした芯鞘型フィラメント糸を用いることが提案されている（特許文献１及び２）。 A palatable beverage extraction bag containing coffee powder, tea leaves, and the like is manufactured by, for example, the following method using a water-permeable thermoplastic base cloth. That is, one water-permeable thermoplastic base fabric is folded in two, or two water-permeable thermoplastic base fabrics of the same shape are stacked, and coffee powder or the like is inserted between them, and the overlapping edge is formed. Manufactured by welding. At this time, as the water-permeable thermoplastic base fabric, a fabric using polyester filament yarn or polylactic acid filament yarn as warp and weft is used, and particularly a core having a high melting point component as a core component and a low melting point component as a sheath component. It has been proposed to use a sheath-type filament yarn (Patent Documents 1 and 2).
溶着方法としては、熱溶着又は超音波溶着が採用されている。熱溶着は外部熱源を基布に与えて溶着させるものであり、超音波溶着は超音波振動により基布に摩擦熱を与えて溶着させるものである。熱溶着は、外部熱源により基布に熱を与えるため、重ね合わせ端縁のみではなく、その他の箇所にも熱が伝導する。したがって、熱によって基布が影響を受けやすく、基布が収縮しやすいという欠点があった。一方、超音波溶着は、基布同士が重ね合わされた端縁の接触した箇所のみで摩擦熱が発生し、その他の箇所では摩擦熱は発生しないため、熱によって基布が影響を受けにくく、基布が収縮しにくいという利点があった。 As the welding method, thermal welding or ultrasonic welding is employed. Thermal welding is one in which an external heat source is applied to the base fabric for welding, and ultrasonic welding is one in which friction heat is applied to the base fabric by ultrasonic vibration for welding. In heat welding, since heat is applied to the base fabric by an external heat source, heat is conducted not only to the overlapping edge but also to other places. Therefore, there is a drawback that the base fabric is easily affected by heat and the base fabric tends to shrink. On the other hand, in ultrasonic welding, friction heat is generated only at the places where the edges of the base fabrics overlapped with each other, and friction heat is not generated at other locations. There was an advantage that the cloth was difficult to shrink.
しかるに、上記の欠点にも拘わらず、溶着方法として熱溶着したいという要望が高かった。この理由は、嗜好性飲料抽出袋の製造者である製袋業者の多くが、超音波溶着機を所有していないからである。したがって、通水性熱可塑性基布を構成する経糸及び緯糸を製造する段階で高温度で熱処理して、その熱収縮率を抑制することが行われている。具体的には、経糸及び緯糸を巻回したコーンを熱処理機に投入して、経糸及び緯糸の融点近傍の温度まで加熱して、熱処理を行っている。しかしながら、高融点成分を芯成分とし低融点成分を鞘成分とした芯鞘型フィラメント糸の場合には、かかる熱処理ができなかった。すなわち、芯鞘型フィラメント糸のコーンを、高融点成分近傍の温度まで加熱すると、低融点成分が溶融してフィラメント糸同士が融着し、コーンから芯鞘型フィラメント糸を巻き戻すことができないのである。したがって、芯鞘型フィラメント糸を用いた場合、溶着方法として、現実には超音波溶着が採用されている（特許文献１、段落００４４）。特に、ポリ乳酸系の芯鞘型フィラメント糸は熱収縮が激しく、超音波溶着しか採用できない。 However, despite the above-mentioned drawbacks, there has been a high demand for heat welding as a welding method. This is because many bag makers, who are manufacturers of palatable beverage extraction bags, do not have an ultrasonic welding machine. Accordingly, heat shrinkage is suppressed by heat treatment at a high temperature in the stage of producing warp and weft constituting the water-permeable thermoplastic base fabric. Specifically, the cone around which the warp and the weft are wound is put into a heat treatment machine and heated to a temperature near the melting point of the warp and the weft to perform the heat treatment. However, in the case of a core-sheath filament yarn having a high melting point component as a core component and a low melting point component as a sheath component, such heat treatment cannot be performed. That is, if the core-sheath filament yarn cone is heated to a temperature close to the high-melting-point component, the low-melting-point component melts and the filament yarns are fused together, and the core-sheath filament yarn cannot be rewound from the cone. is there. Therefore, when a core-sheath filament yarn is used, ultrasonic welding is actually employed as a welding method (Patent Document 1, paragraph 0044). In particular, polylactic acid-based core-sheath filament yarns have severe heat shrinkage and can only employ ultrasonic welding.
本発明の課題は、熱収縮率の高いポリ乳酸系芯鞘型フィラメント糸を用いながら、汎用の熱溶着機で嗜好性飲料抽出袋を製造しうるようにすることにある。すなわち、熱収縮率の高いポリ乳酸系芯鞘型モノフィラメント糸よりなる通水性熱可塑性基布の熱収縮を抑制することにある。 An object of the present invention is to make it possible to produce a palatable beverage extraction bag using a general-purpose heat welding machine while using a polylactic acid-based core-sheath filament yarn having a high heat shrinkage rate. That is, the heat shrinkage of a water-permeable thermoplastic base fabric made of a polylactic acid-based sheath-core monofilament yarn having a high heat shrinkage rate is suppressed.
本発明は、ポリ乳酸系芯鞘型フィラメント糸としてモノフィラメント糸を用いると共に、通水性熱可塑性基布の織組織を平組織とし、さらに経糸及び緯糸の各交点を特定の形態で一体化することによって、上記課題を解決したものである。すなわち、本発明は、通水性熱可塑性基布の端縁が、該基布の熱可塑性を利用した溶着によって密封されてなる嗜好性飲料抽出袋において、前記溶着が外部熱源を前記基布に与えると共に前記基布を加圧して行われるヒートシールであり、前記基布は、高融点ポリ乳酸を芯成分とし、低融点ポリ乳酸を鞘成分とする芯鞘型モノフィラメント糸を経糸及び緯糸に用いて製織してなる平織物であり、前記平織物の交点の一方表面は前記経糸及び前記緯糸の鞘成分が前記緯糸の軸方向に流動して、前記緯糸の軸方向に拡がるドーム状となっており、前記交点の他方表面は前記経糸及び前記緯糸の鞘成分が前記経糸の軸方向に流動して、前記経糸の軸方向に拡がるドーム状となっていることを特徴とする嗜好性飲料抽出袋に関するものである。 The present invention uses a monofilament yarn as the polylactic acid core-sheath filament yarn, and the woven structure of the water-permeable thermoplastic base fabric is a flat structure, and further, the intersections of the warp and the weft are integrated in a specific form. The above-mentioned problems are solved. That is, according to the present invention, in the palatable beverage extraction bag in which the edge of the water-permeable thermoplastic base fabric is sealed by welding utilizing the thermoplasticity of the base fabric, the welding provides an external heat source to the base fabric. The base fabric is heat-sealed by pressurizing the base fabric, and the base fabric uses a core-sheath monofilament yarn having a high melting point polylactic acid as a core component and a low melting point polylactic acid as a sheath component for warp and weft. It is a plain woven fabric woven, and one surface of the intersection of the plain woven fabric has a dome shape in which the sheath component of the warp and the weft flows in the axial direction of the weft and expands in the axial direction of the weft. The other surface of the intersection has a dome shape in which the sheath component of the warp and the weft flows in the axial direction of the warp and spreads in the axial direction of the warp. Is.
本発明で用いる芯鞘型モノフィラメント糸は、高融点ポリ乳酸を芯成分とし低融点ポリ乳酸を鞘成分とするものである。乳酸には、光学異性体としてＤ−乳酸とＬ−乳酸があり、両者の共重合比によって融点が変わる。具体的には、Ｌ−乳酸のみを重合したポリＬ−乳酸の融点が最も高く、Ｄ−乳酸を混合すればするほど融点が低下する。芯成分としては、Ｌ−乳酸：Ｄ−乳酸＝９８〜１００：２〜０の共重合比となっているポリ乳酸を用いるのが好ましく、その融点は１５０℃以上となっている。また、鞘成分としては、Ｌ−乳酸：Ｄ−乳酸＝９０〜９５：１０〜５の共重合比となっているポリ乳酸を用いるのが好ましく、その融点は１３０〜１５０℃となっている。鞘成分と芯成分の融点差は３０℃以上であるのが好ましい。融点差が３０℃以上であると、芯成分に熱による影響を与えずに、鞘成分のみを溶融又は軟化させやすいからである。なお、芯鞘型モノフィラメント糸の繊度は、一般的に、２０〜４０デシテックスの範囲内のものが用いられる。 The core-sheath monofilament yarn used in the present invention has a high melting point polylactic acid as a core component and a low melting point polylactic acid as a sheath component. Lactic acid includes D-lactic acid and L-lactic acid as optical isomers, and the melting point changes depending on the copolymerization ratio of both. Specifically, the melting point of poly L-lactic acid obtained by polymerizing only L-lactic acid is the highest, and the melting point decreases as D-lactic acid is mixed. As the core component, it is preferable to use polylactic acid having a copolymerization ratio of L-lactic acid: D-lactic acid = 98 to 100: 2 to 0, and its melting point is 150 ° C. or higher. Moreover, as a sheath component, it is preferable to use polylactic acid having a copolymerization ratio of L-lactic acid: D-lactic acid = 90 to 95:10 to 5, and its melting point is 130 to 150 ° C. The difference in melting point between the sheath component and the core component is preferably 30 ° C. or higher. This is because if the difference in melting point is 30 ° C. or more, only the sheath component is easily melted or softened without affecting the core component by heat. The fineness of the core-sheath monofilament yarn is generally in the range of 20 to 40 dtex.
本発明で用いる通水性熱可塑性基布は、上記した芯鞘型モノフィラメント糸を経糸及び緯糸として用い、平織組織で製織した平織物である。平織物の経糸密度及び緯糸密度は、７５本〜１２０本／２．５４ｃｍ程度である。経糸密度及び緯糸密度がこれより低いとコーヒー粉や茶葉が基布を通過する恐れがあり、高いと通水性が低下する恐れがある。 The water-permeable thermoplastic base fabric used in the present invention is a plain fabric woven with a plain weave structure using the above-described core-sheath monofilament yarn as warp and weft. The warp density and weft density of the plain woven fabric is about 75 to 120 / 2.54 cm. If the warp density and the weft density are lower than this, coffee powder and tea leaves may pass through the base fabric, and if it is higher, the water permeability may be reduced.
本発明は、かかる平織物において経糸及び緯糸の交点が特異な融着形態となっている。平織物の各交点には表側（一方表面）と裏側（他方表面）とがあるが、たとえば一つの交点において表側では経糸が湾曲した状態で裏側では緯糸が湾曲した状態で凹凸となっており、この一つの交点と経糸又は緯糸方向に隣り合う交点は、表側では緯糸が湾曲した状態で裏側では経糸が湾曲した状態で凹凸となっている。この一つの交点を、緯糸の軸に沿って切断したときの模式的断面図を図１として示した。図１中、１は経糸である芯鞘型モノフィラメント糸の鞘成分を示しており、２は経糸である芯鞘型モノフィラメント糸の芯成分を示している。また、３は緯糸である芯鞘型モノフィラメント糸の鞘成分を示しており、４は緯糸である芯鞘型モノフィラメント糸の芯成分を示している。図１中の５は、経糸及び緯糸の鞘成分１及び３が緯糸の軸方向に流動して形成されたものであり、全体として、緯糸の軸方向に拡がってドーム状となっている状態を示したものである。図２は、上記一つの交点を、経糸の軸に沿って切断したときの模式的断面図であり、符号１，２，３及び４は上記と同様である。そして、図２中の６は、経糸及び緯糸の鞘成分１及び３が経糸の軸方向に流動して形成されたものであり、全体として、経糸の軸方向に拡がってドーム状となっている状態を示したものである。そして、かかる特異な融着形態は、経糸又は緯糸方向に隣り合う交点では、表側と裏側とが逆となり、規則正しく並んでいる。なお、上記した特異な融着形態は、無押圧下でかつ基布を緊張させた状態で、鞘成分の融点以上の温度で所定時間処理することより、形成しうる。 In the present invention, in such a plain woven fabric, the intersection of the warp and the weft is a unique fusion form. Each intersection of the plain fabric has a front side (one surface) and a back side (the other surface). For example, at one intersection, the warp is curved on the front side and the weft is curved on the back side. This one intersection point and the intersection point adjacent in the warp or weft direction are uneven in the state where the weft is curved on the front side and the warp is curved on the back side. FIG. 1 shows a schematic cross-sectional view when this one intersection is cut along the weft axis. In FIG. 1, 1 indicates a sheath component of a core-sheath monofilament yarn that is a warp, and 2 indicates a core component of a core-sheath monofilament yarn that is a warp. In addition, 3 indicates a sheath component of a core-sheath monofilament yarn that is a weft, and 4 indicates a core component of a core-sheath monofilament yarn that is a weft. 1 in FIG. 1 is formed by flowing the warp and weft sheath components 1 and 3 in the axial direction of the weft, and as a whole spreads in the axial direction of the weft and forms a dome shape. It is shown. FIG. 2 is a schematic cross-sectional view when the one intersection point is cut along the axis of the warp, and reference numerals 1, 2, 3 and 4 are the same as described above. 2 in FIG. 2 is formed by flowing the warp and weft sheath components 1 and 3 in the axial direction of the warp, and as a whole expands in the axial direction of the warp and has a dome shape. It shows the state. And, in such a unique fusion form, the front side and the back side are reversed and arranged regularly at the intersections adjacent in the warp or weft direction. In addition, the above-mentioned specific fusion | melting form can be formed by processing for a predetermined time at the temperature more than melting | fusing point of a sheath component in the state which did not press and tensioned the base fabric.
本発明に用いる通水性熱可塑性基布は上記した構造を持つものであり、この基布を用いて嗜好性飲料抽出袋を作成する。たとえば、長尺状の基布を二つ折りにし長方形状として、その間にコーヒー粉等を挿入し、長方形状の三方端縁を熱溶着機でヒートシールして嗜好性飲料抽出袋を作成する。また、二枚の長方形状の基布を重ね合わせ、その間にコーヒー粉を挿入し、長方形状の四方端縁を熱溶着機でヒートシールして嗜好性飲料抽出袋を作成する。あるいはまた、二枚の円形状の基布を重ね合わせ、その間にコーヒー粉等を挿入し、円形状の全周端縁を熱溶着機でヒートシールして嗜好性飲料抽出袋を作成する。その他、従来公知のテトラポット形状等の嗜好性飲料抽出袋についても、その端縁を熱溶着機でヒートシールすることにより作成される。なお、熱溶着機は、加熱板を備えたもので、この加熱板が外部熱源となる。そして、加熱板を端縁に押し当てて、熱を基布に与えると共に、加圧してヒートシールが行われる。 The water-permeable thermoplastic base fabric used in the present invention has the above-described structure, and a palatable beverage extraction bag is prepared using this base fabric. For example, a long base cloth is folded in half to form a rectangular shape, coffee powder or the like is inserted between them, and the rectangular three-way edge is heat-sealed with a heat welding machine to create a palatable beverage extraction bag. In addition, two rectangular base fabrics are overlapped, coffee powder is inserted between them, and the rectangular four-side edges are heat-sealed with a heat welding machine to create a palatable beverage extraction bag. Alternatively, two circular base fabrics are overlapped, coffee powder or the like is inserted between them, and the circular peripheral edge is heat-sealed with a heat welding machine to create a palatable beverage extraction bag. In addition, it is created by heat-sealing the edge with a heat welding machine also about a well-known taste drink extraction bag of the tetrapot shape etc. conventionally. The heat welding machine includes a heating plate, and this heating plate serves as an external heat source. Then, the heating plate is pressed against the edge, heat is applied to the base fabric, and heat sealing is performed by applying pressure.
熱溶着の条件は、通水性熱可塑性基布同士が溶着する任意の条件が採用される。本発明においては、芯鞘型モノフィラメント糸の鞘成分による溶着であるので、鞘成分の融点近傍よりも若干低い温度であって、しかも鞘成分が軟化流動する圧力とするのが好ましい。また、熱溶着の時間は、通水性熱可塑性基布のその他の箇所に熱が伝導するのを防止するために、短時間であるのが好ましい。具体的には、１１０〜１２０℃程度で、圧力は０．３ＭＰａ程度で、時間は０．５秒程度が好ましい。以上のような条件で、熱溶着を行うことにより、嗜好性飲料抽出袋を得ることができる。 As the conditions for heat welding, any conditions for welding water-permeable thermoplastic base fabrics to each other are adopted. In the present invention, since the welding is performed by the sheath component of the core-sheath monofilament yarn, it is preferable that the temperature is slightly lower than the vicinity of the melting point of the sheath component and the sheath component is softened and flowed. The heat welding time is preferably a short time in order to prevent heat conduction to other parts of the water-permeable thermoplastic base fabric. Specifically, the pressure is preferably about 110 to 120 ° C., the pressure is about 0.3 MPa, and the time is about 0.5 seconds. By performing heat welding under the above conditions, a palatable beverage extraction bag can be obtained.
本発明に用いる通水性熱可塑性基布は、高融点ポリ乳酸を芯成分とし低融点ポリ乳酸を鞘成分とする芯鞘型モノフィラメント糸を経糸及び緯糸に用いて製織してなる平織物であり、その各交点の一方表面が緯糸の軸方向に拡がるドーム状となっており、他方表面が経糸の軸方向に拡がるドーム状となっている。そして、平織物は、経糸及び緯糸が規則正しく交互に上下に屈曲してなるものであるから、前記各交点の特異な融着形態が、表及び裏側となって規則正しく交互に並んでいる。したがって、芯鞘型モノフィラメント糸が熱収縮を起こすような熱が、外部熱源から与えられたとしても、熱収縮が各交点によってバランスよく拘束される。よって、ヒートシールによる製袋加工時において、通水性熱可塑性基布が収縮しにくいという効果を奏する。 The water-permeable thermoplastic base fabric used in the present invention is a plain fabric formed by weaving a core-sheath monofilament yarn having a high melting point polylactic acid as a core component and a low melting point polylactic acid as a sheath component for warp and weft yarns, One surface of each intersection has a dome shape that extends in the axial direction of the weft, and the other surface has a dome shape that extends in the axial direction of the warp. Since the plain woven fabric has warps and wefts that are regularly and alternately bent up and down, the specific fusion forms at the intersections are regularly and alternately arranged on the front and back sides. Therefore, even if heat that causes the core-sheath monofilament yarn to undergo thermal contraction is applied from an external heat source, the thermal contraction is restrained in a balanced manner by the respective intersections. Therefore, there is an effect that the water-permeable thermoplastic base fabric does not easily shrink during bag making processing by heat sealing.
実施例１
芯成分が融点１６８℃の高融点ポリ乳酸よりなり、鞘成分が融点１３０℃の低融点ポリ乳酸よりなる芯鞘型モノフィラメント糸を準備した。高融点ポリ乳酸はＬ−乳酸９９重量部とＤ−乳酸１重量部とを共重合したものであり、低融点ポリ乳酸はＬ−乳酸９０重量部とＤ−乳酸１０重量部とを共重合したものである。また、芯成分と鞘成分の重量割合は、芯成分：鞘成分＝７：３である。また、この芯鞘型モノフィラメント糸は、断面が円形であり、繊度は２６デシテックスのものである。この芯鞘型モノフィラメント糸を経糸及び緯糸に使用して、経糸密度９７本／２．５４ｃｍで緯糸密度９７本／２．５４ｃｍの平織物を得た。この平織物を、１４０℃に加熱された雰囲気を持つピンテンター機に導入し、無押圧下で３０秒間加熱して、通水性熱可塑性基布を得た。
Example 1
A core-sheath monofilament yarn having a core component made of high melting point polylactic acid having a melting point of 168 ° C. and a sheath component made of low melting point polylactic acid having a melting point of 130 ° C. was prepared. The high melting point polylactic acid is a copolymer of 99 parts by weight of L-lactic acid and 1 part by weight of D-lactic acid, and the low melting point polylactic acid is a copolymer of 90 parts by weight of L-lactic acid and 10 parts by weight of D-lactic acid. Is. Moreover, the weight ratio of a core component and a sheath component is core component: sheath component = 7: 3. The core-sheath monofilament yarn has a circular cross section and a fineness of 26 dtex. Using this core-sheath monofilament yarn for warp and weft, a plain woven fabric having a warp density of 97 yarns / 2.54 cm and a weft density of 97 yarns / 2.54 cm was obtained. This plain woven fabric was introduced into a pin tenter machine having an atmosphere heated to 140 ° C., and heated for 30 seconds without pressing to obtain a water-permeable thermoplastic base fabric.
この通水性熱可塑性基布から、縦８０ｍｍで横４０ｍｍの長方形の試料片を二枚採取し、両者を重ね合わせて、その端縁５ｍｍ幅をヒートシール機で溶着した。使用したヒートシール機は佐川製作所社製のヒートシール機で、温度１１０℃、圧力０．３ＭＰａ及び加圧時間０．５秒の条件で溶着して袋を作成した。かかる袋を四個作成し、各々の袋について、以下の式にて熱収縮率を測定し、四個の平均値を求めたところ、平均熱収縮率は１．６６％であった。
［（試料片の横幅４０ｍｍ−袋の横幅）／（試料片の横幅４０ｍｍ）］×１００（％）
Two rectangular sample pieces having a length of 80 mm and a width of 40 mm were collected from this water-permeable thermoplastic base fabric, both were overlapped, and the edge 5 mm width was welded with a heat sealer. The heat sealer used was a heat sealer manufactured by Sagawa Seisakusho Co., Ltd., and a bag was prepared by welding under conditions of a temperature of 110 ° C., a pressure of 0.3 MPa, and a pressurization time of 0.5 seconds. Four such bags were prepared, and for each bag, the heat shrinkage rate was measured by the following formula, and the average value of the four pieces was determined. The average heat shrinkage rate was 1.66%.
[(Width of sample piece 40 mm-width of bag) / (width of sample piece 40 mm)] × 100 (%)
実施例２
ヒートシール条件を温度１１５℃に変更する他は、実施例１と同一の方法で袋を作成した。そして、同様に熱収縮率を測定したところ、平均熱収縮率は１．２６％であった。
Example 2
A bag was prepared in the same manner as in Example 1 except that the heat seal condition was changed to 115 ° C. And when the thermal contraction rate was measured similarly, the average thermal contraction rate was 1.26%.
実施例３
ヒートシール条件を温度１２０℃に変更する他は、実施例１と同一の方法で袋を作成した。そして、同様に熱収縮率を測定したところ、平均熱収縮率は２．２９％であった。
Example 3
A bag was prepared in the same manner as in Example 1 except that the heat seal condition was changed to 120 ° C. And when the thermal contraction rate was measured similarly, the average thermal contraction rate was 2.29%.
比較例１
実施例１で用いた平織物に加熱処理を施さない他は、実施例１と同一の方法で袋を作成した。そして、同様に熱収縮率を測定したところ、平均熱収縮率は１０％以上であり、端縁５ｍｍ幅のヒートシール部が歪んだ状態となった。
Comparative Example 1
A bag was prepared in the same manner as in Example 1 except that the plain fabric used in Example 1 was not subjected to heat treatment. Then, when the heat shrinkage rate was measured in the same manner, the average heat shrinkage rate was 10% or more, and the heat seal part having a width of 5 mm at the edge was distorted.
１ 経糸として用いられている芯鞘型モノフィラメント糸の鞘成分
２ 経糸として用いられている芯鞘型モノフィラメント糸の芯成分
３ 緯糸として用いられている芯鞘型モノフィラメント糸の鞘成分
４ 緯糸として用いられている芯鞘型モノフィラメント糸の芯成分
５ 経糸及び緯糸の鞘成分が緯糸の軸方向に流動して形成された部分
６ 経糸及び緯糸の鞘成分が経糸の軸方向に流動して形成された部分
1 A sheath component of a core-sheath monofilament yarn used as a warp 2 A core component of a core-sheath monofilament yarn used as a warp 3 A sheath component of a core-sheath monofilament yarn used as a weft 4 Used as a weft The core component of the core-sheath monofilament yarn 5 The part formed by flowing the sheath component of the warp and the weft in the axial direction of the weft 6 The part formed by flowing the sheath component of the warp and the weft in the axial direction of the warp
Claims (4)
前記溶着が外部熱源を前記基布に与えると共に前記基布を加圧して行われるヒートシールであり、
前記基布は、高融点ポリ乳酸を芯成分とし、低融点ポリ乳酸を鞘成分とする芯鞘型モノフィラメント糸を経糸及び緯糸に用いて製織してなる平織物であり、
前記平織物の交点の一方表面は前記経糸及び前記緯糸の鞘成分が前記緯糸の軸方向に流動して、前記緯糸の軸方向に拡がるドーム状となっており、前記交点の他方表面は前記経糸及び前記緯糸の鞘成分が前記経糸の軸方向に流動して、前記経糸の軸方向に拡がるドーム状となっていることを特徴とする嗜好性飲料抽出袋。 In the palatable beverage extraction bag, the edge of the water-permeable thermoplastic base fabric is sealed by welding using the thermoplasticity of the base fabric.
The welding is performed by applying an external heat source to the base fabric and pressurizing the base fabric,
The base fabric is a plain fabric formed by weaving a core-sheath monofilament yarn having a high melting point polylactic acid as a core component and a low melting point polylactic acid as a sheath component for warp and weft,
One surface of the intersection of the plain woven fabric has a dome shape in which the warp and the sheath component of the weft flow in the axial direction of the weft and spread in the axial direction of the weft, and the other surface of the intersection is the warp A palatable beverage extraction bag, wherein the sheath component of the weft yarns flows in the axial direction of the warp yarn and expands in the axial direction of the warp yarn.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013087644A JP2014210596A (en) | 2013-04-18 | 2013-04-18 | Favorite beverage extract bag |
| TW103114183A TW201507947A (en) | 2013-04-18 | 2014-04-18 | Preferred-beverage extraction bag |
| PCT/JP2014/061011 WO2014171530A1 (en) | 2013-04-18 | 2014-04-18 | Preferred-beverage extraction bag |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013087644A JP2014210596A (en) | 2013-04-18 | 2013-04-18 | Favorite beverage extract bag |
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| JP2014210596A true JP2014210596A (en) | 2014-11-13 |
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| JP2013087644A Pending JP2014210596A (en) | 2013-04-18 | 2013-04-18 | Favorite beverage extract bag |
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| JP (1) | JP2014210596A (en) |
| TW (1) | TW201507947A (en) |
| WO (1) | WO2014171530A1 (en) |
Cited By (2)
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| WO2021111991A1 (en) * | 2019-12-05 | 2021-06-10 | 日本紙工株式会社 | Method for producing filter molded article |
| CN112938082A (en) * | 2021-03-31 | 2021-06-11 | 青海瑞鸿纸塑包装制品有限公司 | Novel anti-seepage paper cup |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016088555A (en) * | 2014-10-31 | 2016-05-23 | 山中産業株式会社 | Bag for extracting palatability drink |
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| JPH04136232A (en) * | 1989-12-28 | 1992-05-11 | Kanebo Ltd | Mesh cloth for printing screen and its production |
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| WO2004072371A1 (en) * | 2003-02-06 | 2004-08-26 | The Procter & Gamble Company | Unitary fibrous structure comprising cellulosic and synthetic fibers and process for making same |
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| JPH04136232A (en) * | 1989-12-28 | 1992-05-11 | Kanebo Ltd | Mesh cloth for printing screen and its production |
| JP2000334231A (en) * | 1999-06-02 | 2000-12-05 | Kawasumi Lab Inc | Filters and medical instruments |
| WO2004072371A1 (en) * | 2003-02-06 | 2004-08-26 | The Procter & Gamble Company | Unitary fibrous structure comprising cellulosic and synthetic fibers and process for making same |
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| WO2021111991A1 (en) * | 2019-12-05 | 2021-06-10 | 日本紙工株式会社 | Method for producing filter molded article |
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| CN112938082A (en) * | 2021-03-31 | 2021-06-11 | 青海瑞鸿纸塑包装制品有限公司 | Novel anti-seepage paper cup |
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| TW201507947A (en) | 2015-03-01 |
| WO2014171530A1 (en) | 2014-10-23 |
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