JP3462155B2 - Tea bag - Google Patents
Tea bagInfo
- Publication number
- JP3462155B2 JP3462155B2 JP2000212300A JP2000212300A JP3462155B2 JP 3462155 B2 JP3462155 B2 JP 3462155B2 JP 2000212300 A JP2000212300 A JP 2000212300A JP 2000212300 A JP2000212300 A JP 2000212300A JP 3462155 B2 JP3462155 B2 JP 3462155B2
- Authority
- JP
- Japan
- Prior art keywords
- polymer
- polylactic acid
- melting point
- fiber
- tea bag
- 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 - Fee Related
Links
Classifications
-
- 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
- Packages (AREA)
- Wrappers (AREA)
- Non-Alcoholic Beverages (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、生分解性を有する
ポリ乳酸繊維からなるティーバッグに関するものであ
る。TECHNICAL FIELD The present invention relates to a tea bag made of biodegradable polylactic acid fiber.
【０００２】[0002]
【従来の技術】自然環境下で、例えば微生物により分解
され最終的には炭酸ガスと水になる完全循環型生分解性
ポリマ−として、ポリ乳酸が注目されている。ポリ乳酸
は融点が高く結晶性も高いため、衣料用並びに工業用繊
維としても有望であることが期待されている。しかしな
がら、従来は生体適合性を活かした手術糸（縫合糸）な
どのごく限られた用途が知られているに過ぎない。その
理由は、ポリ乳酸を実用的な衣料用並びに工業用繊維と
する技術確立の困難さに加え、繊維製品，中でもティー
バッグとしての商品化技術の開発が遅れていたことによ
るものである。2. Description of the Related Art Polylactic acid has been attracting attention as a completely circulating biodegradable polymer which is decomposed by microorganisms and finally becomes carbon dioxide gas and water in a natural environment. Since polylactic acid has a high melting point and high crystallinity, it is expected to be promising as a fiber for clothing and industrial use. However, conventionally, only very limited applications such as surgical threads (sutures) utilizing biocompatibility have been known. The reason for this is that, in addition to the difficulty in establishing the technology for making polylactic acid into a practical clothing and industrial fiber, the development of commercialization technology for fiber products, especially tea bags, was delayed.
【０００３】[0003]
【発明が解決しようとする課題】本発明者らは、ポリ乳
酸の生分解性を維持し、完全循環型生分解性の不織布や
織り・編み布等の繊維構造物を提供するために鋭意研究
した結果、本発明を完成した。本発明の目的は、生分解
性を有するティーバッグを提供するにある。DISCLOSURE OF THE INVENTION The present inventors have earnestly studied to provide polylactic acid with biodegradability and to provide a fiber structure such as a complete circulation type biodegradable nonwoven fabric or woven or knitted fabric. As a result, the present invention has been completed. An object of the present invention is to provide a tea bag having biodegradability.
【０００４】[0004]
【課題を解決するための手段】本発明の目的は、熱融着
性ポリ乳酸繊維が、融点Ｔａを有するポリ乳酸系重合体
Ａと、ポリ乳酸系重合体Ｂとからなり、前記ポリ乳酸系
重合体Ｂの融点Ｔｂが前記融点Ｔａより１０℃以上低い
か又は非晶性で融点を有しない熱融着性ポリ乳酸複合繊
維である、熱融着性ポリ乳酸繊維からなるティーバッグ
によって達成される。SUMMARY OF THE INVENTION It is an object of the present invention to provide heat fusion
Lactic acid polylactic acid fiber having a melting point Ta
A and a polylactic acid-based polymer B
The melting point Tb of the polymer B is lower than the melting point Ta by 10 ° C. or more.
Heat-bondable polylactic acid composite fiber which is amorphous or has no melting point
This is achieved by a tea bag made of heat-fusible polylactic acid fiber which is a fiber.
【０００５】融点Ｔｂを有する場合、融点Ｔｂは前記融
点Ｔａよりも１０℃以上低い温度であることが好まし
く、両者の融点の差は好ましくは１０〜８０℃、更に好
ましくは３０〜６０℃である。When it has a melting point Tb, the melting point Tb is preferably lower than the melting point Ta by 10 ° C. or more, and the difference between the melting points is preferably 10 to 80 ° C., more preferably 30 to 60 ° C. .
【０００６】本発明に用いる上記重合体Ａは、Ｌ−乳酸
単位又はＤ−乳酸単位を８０モル％以上含有するポリ乳
酸系重合体が好適である。ポリ乳酸には、光学異性体で
ある、Ｄ体とＬ体とのあることが知られているが、両者
を共重合すると融点は低下し、光学純度が十分に低くな
ると最早融点を示さない非晶性ポリ乳酸となる。重合体
Ａにおける乳酸単位の光学純度（Ｄ体又はＬ体の比率）
は好ましくは８０モル％以上、より好ましくは９５モル
％以上、更に好ましくは９８モル％以上である。The polymer A used in the present invention is preferably a polylactic acid-based polymer containing 80 mol% or more of L-lactic acid units or D-lactic acid units. It is known that polylactic acid has optical isomers, ie, D isomer and L isomer, but when they are copolymerized with each other, the melting point is lowered, and when the optical purity is sufficiently low, the melting point is no longer exhibited. It becomes crystalline polylactic acid. Optical purity of lactic acid unit in polymer A (ratio of D-form or L-form)
Is preferably 80 mol% or more, more preferably 95 mol% or more, still more preferably 98 mol% or more.
【０００７】前述したように、重合体Ｂの融点Ｔｂは、
重合体Ａの融点Ｔａより低いか、または融点を有しない
非晶性のものである。融点の低いポリ乳酸系重合体ある
いは非晶性のポリ乳酸系重合体を得るには、重合体Ｂに
おける乳酸単位の光学純度を適宜調節することにより達
成できる。即ち、光学純度を低下させると融点の低いも
のが得られ、更に低下させれば非晶性のものを得ること
ができる。As described above, the melting point Tb of the polymer B is
It is an amorphous substance having a melting point Ta lower than that of the polymer A or having no melting point. The polylactic acid-based polymer having a low melting point or the amorphous polylactic acid-based polymer can be obtained by appropriately adjusting the optical purity of the lactic acid unit in the polymer B. That is, when the optical purity is lowered, a low melting point is obtained, and when it is further lowered, an amorphous one can be obtained.
【０００８】一般には乳酸を発酵法で生産するとＬ体が
産生されるので、工業的にはＬ−乳酸の方が大量且つ安
価に入手し易く、本発明に係るポリ乳酸系重合体は、通
常Ｌ−乳酸を主体とするものである。しかしながら、Ｄ
−乳酸を主体とする重合体であっても、Ｌ−乳酸の場合
と同様の物性のものを得ることができる。Since L-form is generally produced when lactic acid is produced by a fermentation method, L-lactic acid is industrially easily available in a large amount at a low cost, and the polylactic acid-based polymer according to the present invention is usually used. It is mainly composed of L-lactic acid. However, D
Even if the polymer is mainly composed of lactic acid, the same physical properties as those of L-lactic acid can be obtained.
【０００９】本発明に用いる重合体Ａ及び／又は重合体
Ｂとしては、乳酸に分子量３００以上のポリエチレング
リコ−ルを共重合したポリ乳酸系重合体を使用すること
もできる。この場合ポリエチレングリコ−ルは、好まし
くは０．１〜１５重量％程度共重合される。As the polymer A and / or polymer B used in the present invention, a polylactic acid-based polymer obtained by copolymerizing lactic acid with polyethylene glycol having a molecular weight of 300 or more can also be used. In this case, polyethylene glycol is preferably copolymerized at about 0.1 to 15% by weight.
【００１０】また、重合体Ａ及び／又は重合体Ｂは、脂
肪族多価アルコ−ル、脂環族多価アルコ−ル、脂肪族多
価カルボン酸、脂環族多価カルボン酸、脂肪族ヒドロキ
シカルボン酸、脂環族ヒドロキシカルボン酸、芳香族ヒ
ドロキシカルボン酸等の多官能基を有する化合物、ある
いはラクトン，環状エ−テル類等の環状化合物等を、好
ましくは０．１〜１５重量％、より好ましくは０．１〜
１０重量％、更に好ましくは０．５〜７重量％共重合し
たものであっても良い。これら多官能基を有する化合物
または環状化合物を共重合することにより、溶融紡糸に
おけるポリ乳酸の流動性が改善され、紡糸操業性と糸質
の向上を図ることができる。The polymer A and / or the polymer B is an aliphatic polyhydric alcohol, an alicyclic polyhydric alcohol, an aliphatic polycarboxylic acid, an alicyclic polycarboxylic acid, or an aliphatic polycarboxylic acid. A compound having a polyfunctional group such as hydroxycarboxylic acid, alicyclic hydroxycarboxylic acid or aromatic hydroxycarboxylic acid, or a cyclic compound such as lactone or cyclic ether is preferably contained at 0.1 to 15% by weight, More preferably 0.1 to
It may be a copolymer of 10% by weight, more preferably 0.5 to 7% by weight. By copolymerizing these compounds having a polyfunctional group or a cyclic compound, the fluidity of polylactic acid in melt spinning can be improved, and spinning operability and yarn quality can be improved.
【００１１】本発明において、均質かつ高強度の良質な
繊維を得るためには、重合体Ａの分子量は好ましくは５
万以上、より好ましくは１０万以上、更に好ましくは１
５万以上のものである。更に、均質な繊維及び繊維製品
とするためには、重合体Ａと重合体Ｂとの分子量差は、
好ましくは５万以下、より好ましくは３万以下、更に好
ましくは２万以下である。重合体Ａと重合体Ｂとの分子
量差が５万以下の場合、紡糸安定性に優れ、得られた繊
維の品質変動、バラツキが少なくなり、商品価値が高ま
るからである。In the present invention, the polymer A preferably has a molecular weight of 5 in order to obtain high quality fibers which are homogeneous and have high strength.
10,000 or more, more preferably 100,000 or more, further preferably 1
It is more than 50,000. Further, in order to obtain homogeneous fibers and fiber products, the difference in molecular weight between the polymer A and the polymer B is
It is preferably 50,000 or less, more preferably 30,000 or less, still more preferably 20,000 or less. This is because when the difference in molecular weight between the polymer A and the polymer B is 50,000 or less, the spinning stability is excellent, the quality variation and variation of the obtained fiber are reduced, and the commercial value is increased.
【００１２】本発明のティーバッグに用いる熱融着性ポ
リ乳酸繊維は、上記重合体Ａと上記重合体Ｂとを多層構
造に複合化した複合繊維であって、その横断面構造は芯
鞘型のほか、並列型（サイド・バイ・サイド）、多芯
型、多重並列型（縞状）、同心円型、偏心円型、放射状
型等を挙げることができる。いずれの横断面構造の場合
も、少なくとも繊維表面の一部に重合体Ｂを露出させた
ものである。重合体Ｂが繊維表面に露出していない場合
には、熱融着性が発現せず、本発明の目的を達すること
ができない。したがって、複合繊維の横断面構造が芯鞘
型においては、芯の部分が重合体Ａで鞘の部分が重合体
Ｂで構成されることになる。The heat-fusible polylactic acid fiber used in the tea bag of the present invention is a composite fiber in which the polymer A and the polymer B are compounded into a multilayer structure, and the cross-sectional structure thereof is a core-sheath type. Besides, parallel type (side by side), multi-core type, multiple parallel type (striped type), concentric type, eccentric type, radial type and the like can be mentioned. In any of the cross-sectional structures, the polymer B is exposed on at least a part of the fiber surface. When the polymer B is not exposed on the fiber surface, the heat fusion property is not exhibited and the object of the present invention cannot be achieved. Therefore, when the cross-sectional structure of the composite fiber is the core-sheath type, the core portion is composed of the polymer A and the sheath portion is composed of the polymer B.
【００１３】また、上記複合繊維における重合体Ａから
構成された部分の比率は、好ましくは５０重量％、より
好ましくは６０重量％以上、更に好ましくは７０重量％
以上であり、且つ９５重量％以下のものが望ましい。上
述のような複合繊維は、通常それぞれの横断面構造が得
られるように設計された特殊口金を通して溶融紡糸して
製造される。The ratio of the portion composed of the polymer A in the composite fiber is preferably 50% by weight, more preferably 60% by weight or more, and further preferably 70% by weight.
It is desirable that the amount is not less than 95% by weight. The composite fiber as described above is usually manufactured by melt spinning through a special spinneret designed to obtain each cross-sectional structure.
【００１４】このようにして得られた熱融着性ポリ乳酸
繊維を、絡合させて不織布状となした後、エンボスマシ
ンにより、重合体Ｂが融点を有するときはその融点より
高く且つ重合体Ａの融点より低い温度で加熱加圧する
と、重合体Ａは原形を保持したまま重合体Ｂが溶融し近
接する他の繊維の重合体Ｂと融着され、ティーバッグ用
の不織布を得ることができる。When the heat-fusible polylactic acid fiber thus obtained is entangled to form a non-woven fabric, and when the polymer B has a melting point, it is higher than the melting point by the embossing machine. When the polymer A is heated and pressurized at a temperature lower than the melting point of A, the polymer B is melted while maintaining the original shape and is fused with the polymer B of other fibers in the vicinity, so that a nonwoven fabric for a tea bag can be obtained. it can.
【００１５】また、得られた熱融着性ポリ乳酸繊維を常
法により、紗等の織物や編物とし、ティーバッグを製造
することもできる。The heat-fusible polylactic acid fiber thus obtained can be used as a woven or knitted fabric such as gauze by a conventional method to produce a tea bag.
【００１６】[0016]
【発明の効果】熱融着性ポリ乳酸繊維は、融点の異なる
ポリ乳酸系重合体を複合した繊維からなるものであるた
め、所定温度で加熱加圧することにより、片方の重合体
部分だけが溶融し、繊維の形態を保持しつつ繊維同士を
熱融着することができる。EFFECTS OF THE INVENTION The heat-fusible polylactic acid fiber is composed of fibers of polylactic acid-based polymers having different melting points. Therefore, by heating and pressurizing at a predetermined temperature, only one polymer part is melted. Then, the fibers can be heat-sealed while maintaining the fiber form.
【００１７】このため、本発明のティーバッグは、完全
循環型生分解性であり、ノ−バインダ−であり、十分な
抗張力、引き裂き抵抗力、並びに剥離強度を有する。Therefore, the tea bag of the present invention is a complete circulation type biodegradable, no binder, and has sufficient tensile strength, tear resistance and peel strength.
【００１８】また、フィラメント糸を経緯直交積層し
て、又は低密度織物や紗となし、その交叉点を加熱溶融
して熱融着させることにより、超軽量ネットとし、新規
な完全生分解性包装材を得ることもできる。更に、織り
編み布を熱カレンダ−ロ−ルに通し、織り編み目を熱融
着させ、気密性布を得ることもできる。[0018] In addition, filament yarns are laminated in a crosswise or crosswise manner or formed into a low-density woven fabric or gauze, and their intersections are heat-melted and heat-sealed to form an ultralight net, which is a novel completely biodegradable package. You can also get lumber. Further, the woven and knitted fabric may be passed through a heat calendar roll to heat-bond the woven and knitted fabric to obtain an airtight cloth.
【００１９】[0019]
【実施例】不織布製造例１〜５
Ｌ−乳酸より合成されたＬ−ラクチドを原料として溶融
重合して得たポリＬ−乳酸と、Ｌ−乳酸にＤ−乳酸を所
定比率で共重合して得たポリＤ／Ｌ共重合乳酸とを準備
した。得られたポリＬ−乳酸及び各種ポリＤ／Ｌ共重合
乳酸から、表１に示す如き融点のポリ乳酸を重合体Ａ及
び重合体Ｂとして適宜選択し、これを構成成分として、
並列型（サイド・バイ・サイド型）の複合繊維を紡糸
し、延伸したのち、熱処理して熱融着性ポリ乳酸複合繊
維を製造した。Examples Nonwoven fabric production examples 1 to 5 Poly L-lactic acid obtained by melt-polymerizing L-lactide synthesized from L-lactic acid as a raw material and L-lactic acid were copolymerized with D-lactic acid at a predetermined ratio. The obtained poly D / L copolymerized lactic acid was prepared. From the obtained poly L-lactic acid and various poly D / L copolymerized lactic acid, polylactic acid having a melting point as shown in Table 1 is appropriately selected as the polymer A and the polymer B, and this is used as a constituent component.
A parallel type (side-by-side type) composite fiber was spun, drawn, and then heat-treated to produce a heat-fusible polylactic acid composite fiber.
【００２０】これら複合繊維をカットファイバ−とな
し、クリンプ（捲縮）加工したのち不織布を作成した。
不織布のバインディングは熱エンボスにて行なった。こ
こでエンボス温度は、表１に示すような重合体Ａの融点
より低い範囲で適宜設定した。その結果は、表１に示す
通りであった。なお、本明細書中の表における「引張強
力」とは、５０mm幅の短冊状試験片を引張り速度２００
％／分で変形させて測定した値であり、Ｎ＝１０の実測
値範囲で示した。These composite fibers were formed into cut fibers, crimped, and then a nonwoven fabric was prepared.
The binding of the non-woven fabric was performed by hot embossing. Here, the embossing temperature was appropriately set within a range lower than the melting point of the polymer A as shown in Table 1. The results are as shown in Table 1. In addition, the "tensile strength" in the tables in the present specification means that a strip-shaped test piece having a width of 50 mm is pulled at a pulling speed of 200.
It is a value measured by being deformed at% / min, and is shown in an actually measured value range of N = 10.
【００２１】[0021]
【表１】 [Table 1]
【００２２】不織布製造例６〜１０
重合体Ａ及び重合体Ｂとして不織布製造例１〜５で用い
たものと同様のポリ乳酸系重合体を用い、横断面構造を
並列型に代えて、融点の高い方の重合体Ａを芯とし且つ
融点が低い方の重合体Ｂを鞘とする芯鞘型の熱融着性複
合繊維を製造した。引き続き、不織布製造例１と同様に
して不織布を作成した。その結果は表２に示す通りであ
った。Nonwoven Fabric Production Examples 6 to 10 The same polylactic acid-based polymers as those used in Nonwoven Fabric Fabrication Examples 1 to 5 were used as Polymer A and Polymer B, and the cross-sectional structure was changed to the parallel type and the melting point was changed. A core-sheath type heat-fusible conjugate fiber having a higher polymer A as a core and a polymer B having a lower melting point as a sheath was produced. Subsequently, a non-woven fabric was prepared in the same manner as in Non-woven Fabric Production Example 1. The results are shown in Table 2.
【００２３】[0023]
【表２】 [Table 2]
【００２４】不織布製造例１１〜１５
ポリＬ−乳酸又はポリＤ／Ｌ−乳酸を多官能基を有する
化合物と、グリセリン又はポリエチレングリコ−ルとを
表３に示す如き割合で共重合し、融点の異なる各種のポ
リ乳酸系重合体を調製した。得られたポリ乳酸系重合体
から、表３に示す如き融点のポリ乳酸を重合体Ａ及び重
合体Ｂとして適宜選択し、芯鞘型または並列型の横断面
構造の複合繊維を溶融紡糸した。得られた複合繊維は熱
融着性ポリ乳酸繊維であった。引き続き、不織布製造例
１と同様にして不織布を作成した。その結果は表３に示
す通りであった。Nonwoven Fabric Preparation Examples 11 to 15 Poly L-lactic acid or poly D / L-lactic acid was copolymerized with a compound having a polyfunctional group and glycerin or polyethylene glycol at a ratio shown in Table 3 to give a melting point. Various different polylactic acid-based polymers were prepared. From the obtained polylactic acid-based polymer, polylactic acid having a melting point as shown in Table 3 was appropriately selected as the polymer A and the polymer B, and a composite fiber having a core-sheath type or a parallel type cross-sectional structure was melt-spun. The obtained conjugate fiber was a heat-fusible polylactic acid fiber. Subsequently, a non-woven fabric was prepared in the same manner as in Non-woven Fabric Production Example 1. The results are shown in Table 3.
【００２５】[0025]
【表３】 [Table 3]
【００２６】実施例１〜５
表４に示す如き融点を有する重合体Ａと重合体Ｂとから
なる、芯鞘型複合フィラメント糸を製造した。得られた
芯鞘型複合フィラメント糸は表４に示す如き性状の熱融
着性ポリ乳酸繊維であった。得られた熱融着性ポリ乳酸
繊維を低密度の紗に織り、１２０℃の熱カレンダ−ロ−
ルを通し、織り目間隔０．１ｍｍ〜５ｍｍの各種の空隙
を持ち且つ目留めの効いた固い組織の紗を得た。その結
果は、表４に示す通りであり、紅茶ティ−バッグとして
極めて好適であった。Examples 1 to 5 Core-sheath type composite filament yarns composed of polymer A and polymer B having melting points as shown in Table 4 were produced. The obtained core-sheath type composite filament yarn was a heat-fusible polylactic acid fiber having the properties shown in Table 4. The heat-fusible polylactic acid fiber thus obtained was woven into a low-density gauze and heat-calendered at 120 ° C.
A gauze having a hard structure having various voids having a texture interval of 0.1 mm to 5 mm and having a clogging effect was obtained. The results are shown in Table 4, and were very suitable as a tea bag.
【００２７】尚、表４における「目ずれ強力」は、紗の
経緯方向とほぼ４５度の傾きを持たせて短冊状に幅５cm
の試験片を切り出し、引張り試験機で変形させ、経・緯
糸が剥離するに至る下限強力で表わした。In Table 4, "Strength of misalignment" means that the width of the strip is 5 cm with an inclination of approximately 45 degrees with respect to the gauze direction.
The test piece of No. 2 was cut out, deformed by a tensile tester, and expressed as the lower limit strength until the warp and weft were separated.
【００２８】[0028]
【表４】 [Table 4]
───────────────────────────────────────────────────── フロントページの続き (72)発明者 松井 雅男 大阪府高槻市北園町７番18号 (72)発明者 小関 栄一 京都府京都市中京区西ノ京桑原町１番地 株式会社島津製作所三条工場内 (72)発明者 藤井 康宏 京都府京都市中京区西ノ京桑原町１番地 株式会社島津製作所三条工場内 (56)参考文献 特開 平６−264344（ＪＰ，Ａ) 特開 平６−248511（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B65D 77/00 B65D 65/46 A23L 2/00 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Masao Matsui 7-18 Kitazono-cho, Takatsuki-shi, Osaka (72) Inventor Eiichi Koseki 1 Nishinokyo-Kuwahara-cho, Nakagyo-ku, Kyoto-shi, Kyoto Shimazu Corporation Sanjo Plant (72 ) Inventor Yasuhiro Fujii 1 Kinohara-cho, Nishinokyo, Nakagyo-ku, Kyoto Prefecture Kyoto Prefecture Sanjo Factory Sanjo Factory (56) References JP-A-6-264344 (JP, A) JP-A-6-248511 (JP, A) (JP) 58) Fields investigated (Int.Cl. 7 , DB name) B65D 77/00 B65D 65/46 A23L 2/00
Claims (4)
るポリ乳酸系重合体Ａと、ポリ乳酸系重合体Ｂとからな
り、前記ポリ乳酸系重合体Ｂの融点Ｔｂが前記融点Ｔａ
より１０℃以上低いか又は非晶性で融点を有しない熱融
着性ポリ乳酸複合繊維である、熱融着性ポリ乳酸繊維か
らなるティーバッグ。1. The heat-fusible polylactic acid fiber has a melting point Ta.
A polylactic acid-based polymer A and a polylactic acid-based polymer B
Therefore, the melting point Tb of the polylactic acid polymer B is the melting point Ta.
10 ℃ or more, or amorphous and has no melting point
A tea bag made of heat- fusible polylactic acid fiber, which is an adhesive polylactic acid composite fiber .
はＤ−乳酸単位を８０モル％以上含有する、請求項１記
載のティーバッグ。 2. A polylactic acid-based polymer A comprises L-lactic acid units or
Contains 80 mol% or more of D-lactic acid unit.
The tea bag listed.
つ芯がポリ乳酸系重合体Ａからなり、鞘がポリ乳酸系重
合体Ｂからなるものである、請求項１または２のいずれ
かに記載のティーバッグ。 3. The cross-sectional structure of the composite fiber is a core-sheath type, and
The core is made of polylactic acid polymer A and the sheath is made of polylactic acid polymer
Either of Claim 1 or 2 which consists of a combination B.
Tea bag described in crab.
出さたことを特徴とする、請求項１記載のティーバッ
グ。 4. The polymer B is exposed on at least a part of the fiber surface.
The tea bag according to claim 1, wherein the tea bag is released.
Gu.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000212300A JP3462155B2 (en) | 2000-07-13 | 2000-07-13 | Tea bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000212300A JP3462155B2 (en) | 2000-07-13 | 2000-07-13 | Tea bag |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12956594A Division JP3355026B2 (en) | 1993-09-09 | 1994-05-18 | Heat-fusible polylactic acid fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001063757A JP2001063757A (en) | 2001-03-13 |
| JP3462155B2 true JP3462155B2 (en) | 2003-11-05 |
Family
ID=18708241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000212300A Expired - Fee Related JP3462155B2 (en) | 2000-07-13 | 2000-07-13 | Tea bag |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3462155B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009107632A (en) * | 2007-10-26 | 2009-05-21 | Unitica Fibers Ltd | Filter bag for beverage |
| JP2015006798A (en) * | 2008-04-18 | 2015-01-15 | 大紀商事株式会社 | Fiber sheet |
| JP2016088555A (en) * | 2014-10-31 | 2016-05-23 | 山中産業株式会社 | Bag for extracting palatability drink |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100473771C (en) | 2002-07-01 | 2009-04-01 | 旭化成纤维株式会社 | Nonwoven fabrics and tea package |
| US7994078B2 (en) | 2002-12-23 | 2011-08-09 | Kimberly-Clark Worldwide, Inc. | High strength nonwoven web from a biodegradable aliphatic polyester |
| US8828895B2 (en) * | 2010-08-25 | 2014-09-09 | Nonwoven Network LLC | Webs of bi-component and mono-component Co-PLA fibers |
| JP6053289B2 (en) * | 2012-01-26 | 2016-12-27 | ユニチカ株式会社 | Polylactic acid long fiber nonwoven fabric |
-
2000
- 2000-07-13 JP JP2000212300A patent/JP3462155B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009107632A (en) * | 2007-10-26 | 2009-05-21 | Unitica Fibers Ltd | Filter bag for beverage |
| JP2015006798A (en) * | 2008-04-18 | 2015-01-15 | 大紀商事株式会社 | Fiber sheet |
| JP2016088555A (en) * | 2014-10-31 | 2016-05-23 | 山中産業株式会社 | Bag for extracting palatability drink |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001063757A (en) | 2001-03-13 |
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