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JP2014210596A - Favorite beverage extract bag - Google Patents

Favorite beverage extract bag Download PDF

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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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fabric
sheath
weft
warp
direction
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中西 輝薫
Terushige Nakanishi
輝薫 中西
酒部 一郎
Ichiro Sakabe
一郎 酒部
基伸 鈴木
Motonobu Suzuki
基伸 鈴木
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ユニチカトレーディング株式会社
Unitika Trading Co Ltd
山中産業株式会社
Yamanaka Sangyo Kk
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    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D1/00Woven fabrics designed to make specified articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D85/00Containers, packaging elements or packages specially adapted for particular articles or materials
    • B65D85/70Containers, packaging elements or packages specially adapted for particular articles or materials for materials not otherwise provided for
    • B65D85/804Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package
    • B65D85/808Disposable 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
    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D13/00Woven 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
    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00Woven fabrics characterised by the material or construction of the yarn or other warp or weft elements used
    • D03D15/0027Woven fabrics characterised by the material or construction of the yarn or other warp or weft elements used using bicomponent threads
    • DTEXTILES; PAPER
    • D10INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10BINDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04Fibres 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]
    • D10B2331/041Fibres 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
    • DTEXTILES; PAPER
    • D10INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10BINDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00Industrial
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W90/00Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
    • Y02W90/10Bio-packaging
    • Y02W90/11Packing containers made from renewable resources
    • Y02W90/12Packing containers made of bio-plastics

Abstract

PROBLEM TO BE SOLVED: To provide a favorite beverage extract bag which can be produced by a general-purpose hot-melt adhesion machine despite the use of a polylactic acid-based core-in-sheath filament yarn having high thermal shrinkage.SOLUTION: A water-permeable thermoplastic ground fabric is a plain weave fabric produced by weaving a fabric using as a warp and weft, a core-in-sheath monofilament yarn made from a core component of high-melting point polylactic acid and a sheath component of low-melting point polylactic acid. One surface of the intersecting point in the plain weave fabric has a portion 5 formed by fluidity of the sheath components 1 and 3 of the warp and weft to the axial direction of the weft and becomes a dome-like form expanding to the axial direction of the weft as a whole. The other surface of the intersecting point has a portion 6 formed by fluidity of the sheath components 1 and 3 of the warp and weft to the axial direction of the warp and becomes the dome-like form expanding to the axial direction of the warp as a whole. A favorite beverage extract bag is obtained by heating the end edge of the water-permeable thermoplastic ground fabric using an external heat source, pressurizing and heat-sealing.

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 comprising accommodating the coffee powder or tea leaves and the like, are those coffee, green tea, about palatability beverage extraction bag for extracting the 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。 Palatability beverage extraction bag comprising accommodating the coffee powder or tea leaves and the like, for example, is produced by the following method using a water-permeable thermoplastic base fabric. 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。 That is, either superposed single water permeability thermoplastic base fabric folded in two, or superimposing two sheets of water permeable thermoplastic base fabric having the same shape, and insert the coffee powder or the like therebetween, the superposition edge It is produced by a method of welding. 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)。 At this time, the core as a water-permeable thermoplastic base fabric, which have been used fabric in which the polyester filament yarn and polylactic acid filament yarn as warp and weft, the low melting point component and particularly high melting point component of the core component and sheath component be used sheath type filament yarn has been proposed (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。 As welding method, heat welding or ultrasonic welding is adopted. 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。 Heat welding is intended to be welded is given an external heat source to the base fabric, ultrasonic welding are those fusing giving frictional heat based on the fabric by ultrasonic vibration. 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。 Heat welding, to provide heat to the base fabric by an external heat source, not only overlay edges, heat is conducted to other locations. 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。 Accordingly, the base fabric is easily affected by heat, the base fabric has a drawback that easily shrink. 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。 On the other hand, ultrasonic welding, frictional heat is generated only in contact with part of the edge of the base fabric with each other are superimposed, since that does not occur frictional heat in other places, the base fabric is hardly affected by heat, radical cloth had the advantage that it is 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。 However, despite the aforementioned disadvantages, it was higher demand for heat welding as welding method. 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。 This is because the number of bag making skilled in the manufacturer's preference beverage extraction bag, because does not own the ultrasonic welder. 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。 Therefore, heat-treated at a high temperature at the stage of manufacturing the warp and weft constituting the water permeability thermoplastic base fabric, it has been practiced to suppress the thermal shrinkage. 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。 Specifically, by introducing the cone by winding the warp and weft in thermal processor, and heating to a temperature near the melting point of the warp and weft, and heat treatment. 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。 However, in the case of a core-sheath filament yarn having a low melting point component as the sheath component and a high melting point component and a core component it could not take the heat treatment. 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。 That is, the core-sheath filament yarn cones, when heated to a temperature of the high melting component near the low melting point component is melted filament yarns with each other and fusing, it is not possible to rewind the core-sheath filament yarn from the cone is there. 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)。 Therefore, when using a core-sheath filament yarn, a welding method, in reality, it is employed ultrasonic welding (Patent Document 1, paragraph 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。 In particular, core-sheath type filaments yarn of the polylactic acid-based is severely thermal shrinkage, can not be adopted only ultrasonic welding.

特許第3459952号公報(特許請求の範囲、段落0044) Patent No. 3459952 publication (claims, paragraph 0044) 特許第3462155号公報(特許請求の範囲) Japanese Patent No. 3462155 (claims)

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。 An object of the present invention, while using a high polylactic acid core-sheath filament yarn having thermal shrinkage, is to make it capable of producing a palatability beverage extraction bag with a general-purpose heat welder. 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。 That is to suppress heat shrinkage of the water permeability thermoplastic base fabric made of high polylactic acid core-sheath monofilament yarn heat shrinkage.

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。 The invention, together with use of monofilament yarn as polylactic acid core-sheath filament yarn, by a flat tissue weave of water permeability thermoplastic base fabric, further integration of the warp and each intersection of the weft yarn in a particular form it is obtained by solving the above problems. 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。 That is, the present invention, the edges of the water permeability thermoplastic base fabric, the palatability beverage extraction bag formed by sealing by welding using a thermoplastic base fabric, said welding applying an external heat source to the base fabric wherein a heat-sealing the backing is performed by pressurizing said base fabric, a high melting point polylactic acid as a core component, using a core-sheath monofilament yarn having a low melting point polylactic acid and the sheath component in the warp and weft yarns together a plain weave fabric formed by weaving, the one surface of the intersection of the plain weave is to flow in the axial direction of the warp and the sheath component is the weft of the weft, has a dome-shaped extending in the axial direction of the weft the other surface of said intersection to flow in the axial direction of the warp and the sheath component is the warp of the weft, to palatability beverage extraction bag, characterized in that has a dome shape extending in the axial direction of the warp it is intended.

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。 Core-sheath monofilament yarn used in the present invention is a low melting point polylactic acid with a high melting point polylactic acid and the core component intended to sheath component. 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。 The lactic acid has a D- lactic acid and L- lactic acid as optical isomers, changes the melting point by copolymerization ratio therebetween. 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。 Specifically, the highest melting point of the L- lactic acid alone polymerized poly L- lactic acid, the melting point is lowered more you mix the D- lactic acid. 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。 The core component, L- lactic acid: D-lactic acid = 98 to 100: it is preferable to use polylactic acid which is a copolymerization ratio of 2 to 0, a melting point has a 0.99 ° C. or higher. 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。 As the sheath component, L- lactic acid: D-lactic acid = 90 to 95: it is preferable to use polylactic acid which is a copolymerization ratio of 10 to 5, the melting point is in the 130 to 150 ° C.. 鞘成分と芯成分の融点差は30℃以上であるのが好ましい。 Melting point difference between the sheath component and the core component is preferably at 30 ° C. or higher. 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。 When the melting point difference is 30 ° C. or higher, without affecting by heat in the core component, because likely to melt or soften only the sheath component. 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。 Incidentally, the fineness of the core-sheath type monofilament yarns, generally, are used within the scope 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。 Water permeability thermoplastic base fabric for use in the present invention, using the core-sheath type monofilament yarn described above as warp and weft, a plain weave was woven by plain weave. 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。 Warp density and weft density of the plain weave is about this 75 present to 120 per 2.54 cm. 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。 Warp density and the weft density is lower than this may cause the coffee powder or tea leaves is passed through the base fabric, there is a possibility that the high and the water permeability is lowered.

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。 The present invention, the intersection of the warp and weft in such plain weave is a unique fusion form. 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。 Although the respective intersections of the plain weave has a front side (one surface) and the back side (the other surface), for example in the back side in the state in the front side in one intersection warp is curved has a concavo-convex in a state in which the weft is bent, this one intersection and warp or intersection adjacent to the weft direction, the front side at the rear side in a state in which the weft is curved and has a convex-concave in a state in which the warp is curved. 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。 The one intersection, shows a schematic cross-sectional view taken along the axis of the weft as FIG. 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。 In Figure 1, 1 denotes a sheath component of the core-sheath monofilament yarn is warp, 2 denotes a core component of the core-sheath type monofilament yarn is warp. 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。 Further, 3 denotes a sheath component of the core-sheath monofilament yarn is weft 4 shows a core component of the core-sheath type monofilament yarn is weft. 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。 5 in FIG. 1, which warp yarns and sheath component 1 and 3 of the weft is formed by flowing in the axial direction of the weft, as a whole, the state in which a dome-shaped spread in the axial direction of the weft there is shown. 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。 2, the intersection of said one, a schematic cross-sectional view taken along the axis of the warp, the code 1, 2, 3 and 4 are as defined above. 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。 Then, 6 in FIG. 2, which warp yarns and sheath component 1 and 3 of the weft is formed by flowing in the axial direction of the warp, as a whole, it has a dome-shaped spread in the axial direction of the warp It shows the state. 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。 Then, according peculiar fusion form, the intersection adjacent to the warp or weft direction, the front side and the back side is reversed, are arranged regularly. 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。 Incidentally, specific fusion forms described above, while being tensioned free pressing under a and base fabric, than to a predetermined time processing at a temperature above the melting point of the sheath component may be formed.

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。 Water permeability thermoplastic base fabric for use in the present invention are those having the above-described structure, to create the preference beverage extraction bag with the base fabric. 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。 For example, a rectangular shape folded in two elongated base fabric, insert the coffee powder or the like therebetween, a rectangular three-way edges are heat sealed by heat welding machine to create a palatability beverage extraction bag. 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。 Further, superimposing two sheets of rectangular base fabric, insert the coffee powder therebetween, a rectangular square edges were heat sealed by heat welder to create a palatability beverage extraction bag. 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。 Alternatively, superimposing two sheets of circular base cloths, and inserted therebetween to coffee powder or the like, to create the preference beverage extraction bag by heat-sealing the entire peripheral edge of the circular shape by heat welding machine. 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。 Other, for the palatability beverage extraction bag, such as a conventional known tetrapod shape, it is created by heat-sealing the edges by heat welding machine. 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。 The thermal welder has, which has a heating plate, the heating plate is external heat source. 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。 Then, by pressing a heated plate to the edge, together with providing heat to the base fabric, heat sealing is performed under 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。 Conditions of the thermal welding, any condition that water permeability thermoplastic base fabric with each other to weld is employed. 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。 In the present invention, because it is welded by the sheath component of the core-sheath monofilament yarn, a slightly lower temperature than the melting point near the sheath component, yet preferably the pressure at which the sheath component is softened flow. 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。 The time of heat welding, to heat other parts of the water-permeable thermoplastic base fabric is prevented from conducting, it is preferably short. 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。 Specifically, at about 110 to 120 ° C., the pressure is about 0.3 MPa, time is preferably about 0.5 seconds. 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。 In the above conditions, by thermal welding, can be obtained palatability beverage extraction bag.

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。 Water permeability thermoplastic base fabric for use in the present invention is a plain weave formed by weaving with a core-sheath monofilament yarn refractory polylactic acid as a core component a low melting point polylactic acid and the sheath component in the warp and weft, its has one surface of each intersection is a dome-shaped extending in the axial direction of the weft, the other surface has a dome-shaped extending in the axial direction of the warp. 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。 Then, the flat fabric, since those warp and weft is bent up and down regularly alternately, peculiar fusion form of the respective intersection, are arranged in regularly alternating a front and back. 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。 Accordingly, core-sheath monofilament yarn heat that causes thermal contraction, even given from an external heat source, heat shrinkage is restrained well balanced with each intersection. 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。 Therefore, at the time of bag making by heat seal, an effect that water permeability thermoplastic base fabric is hardly contracted.

実施例1 Example 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。 The core component is made of high melting point polylactic acid with a melting point of 168 ° C., the sheath component was prepared core-sheath monofilament yarn made of low melting point polylactic acid with a melting point of 130 ° C.. 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。 High melting polylactic acid is obtained by copolymerizing a L- lactate 99 parts by weight and the D- lactic acid 1 part by weight, low melting point polylactic acid was copolymerized with L- lactate 90 parts by weight of D- lactic acid 10 parts by weight it is intended. 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。 The weight ratio of the core component and the sheath component, the core component: sheath component = 7: 3. 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。 Further, the core-sheath monofilament thread cross section is circular, fineness is of 26 dtex. 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。 The core-sheath monofilament yarn used in the warp and weft, to obtain a plain weave fabric of weft density 97 present per 2.54 cm in warp density 97 present per 2.54 cm. 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。 The plain weave was introduced into a pin tenter machine having an atmosphere heated to 140 ° C., and heated for 30 seconds under no pressing, to obtain a water permeability 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。 This water permeability thermoplastic base fabric, a rectangular specimen of the transverse 40mm and two sampled by vertical 80 mm, by overlapping both welded the edges 5mm width heat sealing machine. 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。 In heat sealing machine Sagawa Seisakusho Co., Ltd. of heat sealing machine used, the temperature 110 ° C., it was prepared the bag by welding under a condition of 0.5 seconds between the pressure 0.3MPa and pressurization. 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。 Such bags create four, for each bag, the heat shrinkage rate was measured by the following equation were determined the four average values, the average thermal shrinkage rate was 1.66%.
[(試料片の横幅40mm−袋の横幅)/(試料片の横幅40mm)]×100(%) [(Width of the lateral width 40mm- bag specimen) / (width 40mm sample piece)] × 100 (%)

実施例2 Example 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。 Addition to changing the heat-sealing conditions Temperature 115 ° C. was prepared a bag in the same manner as in Example 1. 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。 Then, similarly it was measured thermal shrinkage, average thermal shrinkage of 1.26%.

実施例3 Example 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。 Addition to changing the heat-sealing conditions Temperature 120 ° C. was prepared a bag in the same manner as in Example 1. 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。 Then, similarly was measured thermal shrinkage, average thermal shrinkage rate was 2.29%.

比較例1 Comparative Example 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。 Other not subjected to heat treatment in a plain weave was used in Example 1 to prepare a bag in the same manner as in Example 1. 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。 Then, similarly was measured thermal shrinkage, the average thermal shrinkage rate is 10% or more, a condition that has distorted heat-sealed portion of the edge 5mm width.

本発明に用いる通水性熱可塑性基布の一つの交点を、緯糸の軸に沿って切断したときの一例を模式的に示した断面図である。 One of intersection of the water permeability thermoplastic base fabric for use in the present invention, is a cross-sectional view schematically showing an example when cut along the axis of the weft. 図1の通水性熱可塑性基布の一つの交点を、緯糸の軸に沿って切断したときの一例を模式的に示した断面図である。 One of intersection of the water permeability thermoplastic base fabric of Figure 1 is a cross-sectional view schematically showing an example when cut along the axis of the weft. 図1の模式的断面図に対応する現実の状態を示した電子顕微鏡写真である。 Is an electron micrograph showing the state of the corresponding reality schematic cross-sectional view of FIG. 図1の模式的断面図に対応する現実の状態を示した電子顕微鏡写真である。 Is an electron micrograph showing the state of the corresponding reality schematic cross-sectional view of FIG.

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 Used as the sheath component 4 weft sheath-core monofilament yarn used as the core component 3 weft sheath-core monofilament yarn is used as the sheath component 2 warp core-sheath monofilament yarn used as a warp yarn and are core-sheath monofilament yarn core component 5 warp and axially-flowing portion formed 6 warp yarns and the sheath component of the weft yarn of the sheath component weft of the weft are formed by flowing in the axial direction of the warp portion

Claims (4)

  1. 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、 Edge of water permeability thermoplastic base fabric, the palatability beverage extraction bag formed by sealing by welding using a thermoplastic base fabric,
    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、 The welding is a heat seal performed by pressurizing the base fabric together with applying an external heat source to the base fabric,
    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、 The base fabric, a high melting point polylactic acid as a core component, a plain weave formed by weaving with a core-sheath monofilament yarn having a low melting point polylactic acid and the sheath component in the warp and weft,
    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。 The one surface of the intersection of the plain weave is to flow in the axial direction of the warp and the sheath component is the weft of the weft, has a dome-shaped extending in the axial direction of the weft, the other surface of the intersection is the warp and the sheath component of the weft yarn to flow in the axial direction of the warp, palatability beverage extraction bag, characterized in that has a dome shape extending in the axial direction of the warp.
  2. 嗜好性飲料抽出袋の形状が長方形であり、該長方形の三端縁若しくは四端縁が熱融着されている請求項1記載の嗜好性飲料抽出袋。 Palatability beverage extraction bag shape is rectangular, palatability beverage extraction bag of claim 1 wherein the three edges or four edges of the rectangle are thermally fused.
  3. 嗜好性飲料抽出袋の形状が円形であり、該円形の全周端縁が熱融着されている請求項1記載の嗜好性飲料抽出袋。 Palatability beverage extraction bag shape is circular, palatability beverage extraction bag according to claim 1, wherein the entire peripheral edge of the circular are thermally fused.
  4. 高融点ポリ乳酸の融点が150℃以上であり、低融点ポリ乳酸の融点が120℃以上であり、両者の融点差が30℃以上である請求項1記載の嗜好性飲料抽出袋。 High melting points polylactic acid is at 0.99 ° C. or higher, the melting point of the low melting point polylactic acid is at 120 ° C. or higher, palatability beverage extraction bag according to claim 1, wherein the melting point difference between the two is 30 ° C. or higher.
JP2013087644A 2013-04-18 2013-04-18 Favorite beverage extract bag Pending JP2014210596A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 Filter and medical appliance
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
US20070172552A1 (en) * 2006-01-17 2007-07-26 Davies Gary R Sweet-tea
JP2009133022A (en) * 2007-11-29 2009-06-18 Unitica Fibers Ltd Filter bag for beverage
JP2010254362A (en) * 2009-04-28 2010-11-11 Unitica Fibers Ltd Method for manufacturing biodegradable water permeable sheet used for extracting container for tea bag or the like
WO2012027539A2 (en) * 2010-08-25 2012-03-01 Nonwoven Network LLC Teabags and components of bi-component and mono-component pla and co-pla fibers

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 Filter and medical appliance
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
US20070172552A1 (en) * 2006-01-17 2007-07-26 Davies Gary R Sweet-tea
JP2009133022A (en) * 2007-11-29 2009-06-18 Unitica Fibers Ltd Filter bag for beverage
JP2010254362A (en) * 2009-04-28 2010-11-11 Unitica Fibers Ltd Method for manufacturing biodegradable water permeable sheet used for extracting container for tea bag or the like
WO2012027539A2 (en) * 2010-08-25 2012-03-01 Nonwoven Network LLC Teabags and components of bi-component and mono-component pla and co-pla fibers

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