JP2004249503A - Biodegradable laminated film, sheet and fabric yarn - Google Patents

Biodegradable laminated film, sheet and fabric yarn Download PDF

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Publication number
JP2004249503A
JP2004249503A JP2003040270A JP2003040270A JP2004249503A JP 2004249503 A JP2004249503 A JP 2004249503A JP 2003040270 A JP2003040270 A JP 2003040270A JP 2003040270 A JP2003040270 A JP 2003040270A JP 2004249503 A JP2004249503 A JP 2004249503A
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Japan
Prior art keywords
biodegradable
yarn
laminated
film
resin
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Withdrawn
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JP2003040270A
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Japanese (ja)
Inventor
Kunio Sakai
邦男 酒井
Hidenobu Asada
英伸 浅田
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Nakai Kogyo KK
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Nakai Kogyo KK
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Publication date
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Priority to JP2003040270A priority Critical patent/JP2004249503A/en
Publication of JP2004249503A publication Critical patent/JP2004249503A/en
Withdrawn legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide foil yarn or twisted yarn for a fabric which has naturally decomposable properties and applies no load to environment at the time of disposal. <P>SOLUTION: This biodegradable laminated film, which has a structure wherein a biodegradable resin film layer and a biodegradable resin layer are laminated successively, is narrowly slit and each of the formed slit pieces is twisted to obtain twisted yarn. Alternatively, the biodegradable laminated film having a laminated structure, wherein biodegradable laminated films obtained by successively laminating the biodegradable resin film layer and the biodegradable resin layer are laminated through a biodegradable adhesive layer, is narrowly slit and each of the formed slit pieces is twisted to obtain the twisted yarn. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明が属する技術分野】
本発明は、生分解性を有する積層シート体及びそのシート体から形成する織物用糸に関するものである。更に詳しくは、綿、絹、紙等の天然素材に織り込むのに適した生分解性織物糸に関するものである。具体的用途としては、カーテン・壁材クロス・ラッピング材・寝装具等の生活資材、農業用シート・釣具等の農園芸およびホビー材、人形衣装・お守り等の装飾材、スーツ・セーター・Tシャツ・靴下・靴紐・帽子等の衣料材に用いるものである。
【0002】
【従来の技術】
従来より、合成樹脂フィルムの片面又は両面に合成樹脂にて着色した積層シート体をスリットして形成した織物用箔糸や織物用撚糸は知られている。しかしながら従来の合成樹脂からなる織物用箔糸や織物用撚糸は、自然環境下では分解しないか、または分解速度が極めて遅いため、使用後放置されたり、土中に埋設処理された場合、半永久的に地上や地中に残存することになる。また焼却処分に於いても燃焼カロリーが高く焼却炉の損傷や、有毒ガスなどの環境汚染物質の排出も懸念されている。
【0003】
【発明が解決しようとする課題】
そこで、上記の現状に基づき、本発明の課題は、自然に分解する性質を有していて廃棄時に環境に負荷を与えない織物用箔糸や織物用撚糸を提供しようとするものである。
【0004】
【課題を解決するための手段】
本発明者らは、上記課題を解決するには、生分解性樹脂フィルム層と、生分解性樹脂層とが順に積層された構造を有する、または生分解性樹脂フィルム層と、生分解性樹脂層とが生分解性接着剤層を介して貼り合わせた積層構造にすれば良いとの着想から、そのような構造を有する生分解性積層フィルムおよび生分解性積層シートを得るべく、鋭意研究開発を行なった。
【0005】
その結果、本発明者らは、数多くの実験に基づき、上記の構造により、優れた付着強度、耐摩擦性および生分解性を有する生分解性積層フィルムおよび生分解性積層シートを得ることができることを見出した。
【0006】
さらに、本発明者らは、上記の生分解性樹脂フィルム層と、生分解性樹脂層としてポリ乳酸系樹脂を含む樹脂組成を用いること、および生分解性接着剤層として天然ゴム系樹脂を用いることにより、さらに優れた付着強度、耐摩擦性および生分解性を有する生分解性積層フィルムおよび生分解性積層シートを得ることができることを見出した。
【0007】
そして、本発明者らは、上記の生分解性積層フィルムおよび生分解性積層シートをスリットし、織物用箔糸や織物用撚糸とすることにより、優れた付着強度、耐摩擦性および生分解性を有する織物用箔糸や織物用撚糸を得ることができることを見出した。
【0008】
すなわち、本発明の生分解性積層フィルム(A)は、生分解性樹脂フィルム層(1)に、少なくとも生分解性樹脂層(2)とが、順に積層された構造を有する。又は、上記生分解性積層フィルムを生分解性接着剤層(3)を介して貼り合わせた積層構造を有する生分解性積層シート(B)であり、上記積層体をスリットした織物用箔糸や織物用撚糸である。
【0009】
【発明の実施の形態】
以下、本発明の好適な実施形態について説明する。
【0010】
本発明に用いる生分解性樹脂フィルムは、生分解性を有する限り、特に限定されず、どのような生分解性の材質から形成されてもよい。ここで生分解性とは、分解の一過程において、生物の代謝が関与して、低分子化合物に変換する性質を言う。
【0011】
本発明に用いる生分解性樹脂フィルムの材質の具体例としては、直鎖状ポリエステル樹脂、ポリ乳酸系樹脂、天然ゴム系の生分解性樹脂、生分解性ポリカプロラクトン系樹脂、ポリビニルアルコールあるいはその変性物である生分解性樹脂、脂肪族ポリエステル・ポリエーテル共重合体などの生分解性樹脂などが挙げられる。これら生分解性の材質の中でも、特にポリ乳酸系樹脂を用いることが特に好ましい。さらにこれらのフィルムには本発明の効果を損なわない限り色素、紫外線吸収剤、熱酸化安定剤などを添加しても良く、フィルムの表面をコロナ処理、プラズマ処理、サンドマット加工などの処理を施すことや、密着性向上のための塗布層をあらかじめ設けたものでもよい。
【0012】
本発明に用いる生分解性樹脂フィルムの厚みは特に制限はないが、6μ〜30μ程度の範囲が好ましい。さらには9μ〜25μがより好ましい。6μより薄いとコスト的に好ましくなく、30μより厚くなると織物の風合いを損なう恐れがある。
【0013】
本発明に用いる生分解性樹脂は、生分解性を有する限り、特に限定されず、どのような生分解性の材質から形成されてもよい。ここで生分解性とは、分解の一過程において、生物の代謝が関与して、低分子化合物に変換する性質を言う。
【0014】
本発明に用いる生分解性樹脂の材質の具体例としては、直鎖状ポリエステル樹脂、ポリ乳酸系樹脂、天然ゴム系の生分解性樹脂、生分解性ポリカプロラクトン系樹脂、ポリビニルアルコールあるいはその変性物である生分解性樹脂、脂肪族ポリエステル・ポリエーテル共重合体などの生分解性樹脂などが挙げられる。これら生分解性の材質の中でも、特にポリ乳酸系樹脂を用いることが特に好ましい。
【0015】
本発明に用いる生分解性接着剤は、生分解性を有する限り、特に限定されず、どのような生分解性の材質から形成されてもよい。ここで生分解性とは、分解の一過程において、生物の代謝が関与して、低分子化合物に変換する性質を言う。
【0016】
本発明に用いる生分解性接着剤の材質の具体例としては、直鎖状ポリエステル樹脂、ポリ乳酸系樹脂、天然ゴム系の生分解性樹脂、生分解性ポリカプロラクトン系樹脂、ポリビニルアルコールあるいはその変性物である生分解性樹脂、脂肪族ポリエステル・ポリエーテル共重合体などの生分解性樹脂などが挙げられる。これら生分解性の材質の中でも、特に天然ゴム系樹脂を用いることが特に好ましい。
【0017】
マイクロスリット幅は、0.1mm〜1.5mm程度が好ましい。幅が0.1mmより狭いと、細すぎて切れ易く、また1.5mmより広いと織物の風合いを損なう恐れがある。
【0018】
次に、このような織物用箔糸と組み合わせて使用される芯糸は、生分解性を有する物であれば特に制限はないが、綿、絹、ウール、紙等の天然素材が好ましい。なお、異型断面糸や中空糸であってもよく、また、長繊維糸、短繊維糸のいずれからなる物であっても良い。
【0019】
【実施例】
以下、実施例を挙げて本発明を詳細に説明するが、本発明はこれらに限定されるものではない。
【0020】
実施例1 厚さが25μの透明なポリ乳酸系樹脂フィルムの片面に生分解性樹脂(商品名バイオテックカラーHGC、大日精化株式会社製)を乾燥膜厚が1.0μになるように塗布して生分解性樹脂層を形成し生分解性積層フィルムを得た。得られた生分解性積層シートを80切り(0.378mm幅)にマイクロスリットして生分解性織物用箔糸を得た。
【0021】
実施例2 厚さが15μの透明なポリ乳酸系樹脂フィルムの片面に生分解性樹脂を乾燥膜厚が1.0μになるように塗布して生分解性樹脂層を形成し生分解性積層シート得た。得られた生分解性積層フィルムの生分解性樹脂層面に生分解性接着剤を乾燥膜厚が3.0μになるようにして塗布して他の生分解性積層シートの生分解性樹脂層面と貼り合せて生分解性積層シートを得た。得られた生分解性シートを70切り(0.432mm幅)にマイクロスリットして生分解性織物用箔糸を得た。さらに得られた生分解性織物用箔糸を150デニールのウール糸を芯糸としてその外周にほぼ隙間なく巻きつけた後、水蒸気セットして本発明の生分解性織物用撚糸を得た。
【0022】
比較例1 透明なポリ乳酸フィルムに替え、透明なポリエステルテレフタレートフィルムを用いること、および生分解性樹脂に替え従来の合成樹脂を用いた以外は実施例1に同じ織物用箔糸を得た。
【0023】
比較例2 透明なポリ乳酸フィルムに替え、透明なポリエステルテレフタレートフィルムを用いること、および生分解性樹脂、生分解性接着剤に替え従来の合成樹脂、合成接着剤を用いた以外は実施例2に同じ織物用撚糸を得た。
【0024】
<性能評価>
上記のようにして得られた織物用箔糸および織物用撚糸について、生分解性、強伸度について、それぞれ下記の測定方法に基づいて測定および評価した。結果を表1に示す。
【0025】
(1)生分解性の評価方法
得られた生分解性の織物用箔糸および織物用撚糸、従来の織物用箔糸および織物用撚糸をコンポスター中に入れ、30日後に前記箔糸・撚糸の形態(分解の速度)を目視にて観察し生分解性を評価した。
【0026】
(2)強伸度測定評価方法
得られた生分解性織物用箔糸と従来の織物用箔糸を万能引張試験機(株式会社オリエンテック製、商品名TENSILON/PTM−50)にて測定した。(試料長:100mm、引張りスピード:200mm/min)
【0027】
【表1】
箔糸・撚糸の性能評価結果

Figure 2004249503
【0028】
上記の表1の結果から、実施例1〜2において得られた生分解性織物糸は、強伸度において、従来公知の合成樹脂フィルムを用いた比較例1〜2の織物糸と比べてほぼ同等であることから、各種資材として好適に用いる上で充分な水準であると判断される。
【0029】
また、上記の表1の結果から、実施例1〜2において得られた生分解性織物糸は、構成される全てが生分解性を有するため、従来公知の合成樹脂フィルムを用いた比較例1〜2の織物糸と比べて著しく優れた生分解性を有することがわかる。
【0030】
今回開示された実施の形態および実施例はすべての点で例示であって制限的なものではないと考えられる。本発明の範囲は上記した説明ではなくて特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。
【0031】
【発明の効果】
上記の結果により、本発明の生分解性織物糸は、従来の織物糸と同等の強伸度を有し、かつ優れた生分解性を兼ね備えた生分解性織物糸であると言える。また、ポリ乳酸フィルムを用いたことでポリ乳酸自体が有する抗菌性も期待できる。
【0032】
すなわち、廃棄後、土壌などに存在する微生物により完全に水と炭酸ガスに速やかに分解され、自然環境を汚染することがないため、自然環境に優しい製品であるということができる。
【図面の簡単な説明】
【図1】本発明の生分解性織物用撚糸の実施の形態の一例を示す断面図である。
【図2】本発明の生分解性積層フィルムの実施の形態の一例を示す断面図である。
【図3】本発明の生分解性積層シートの実施の形態の一例を示す断面図である。
【符号の説明】
1 生分解性樹脂フィルム、2 生分解性樹脂層、3 生分解性接着剤層、4 生分解性芯糸
A 生分解性積層フィルム、B 生分解性積層シート、C 生分解性織物用箔糸 D 生分解性織物用撚糸[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a laminated sheet having biodegradability and a yarn for fabric formed from the sheet. More specifically, the present invention relates to a biodegradable woven yarn suitable for weaving into natural materials such as cotton, silk, and paper. Specific applications include living materials such as curtains, wall materials, cloth, wrapping materials and bedding, agricultural and horticultural and hobby materials such as agricultural sheets and fishing gear, decorative materials such as doll costumes and talismans, suits, sweaters and T-shirts.・ It is used for clothing materials such as socks, shoelaces and hats.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a woven foil yarn and a woven twist yarn formed by slitting a laminated sheet body colored with a synthetic resin on one or both surfaces of a synthetic resin film have been known. However, conventional synthetic resin woven foil yarns and woven twist yarns do not decompose in the natural environment or decompose at an extremely low rate, so if they are left after use or buried in the soil, they will be semi-permanent. Will remain on the ground and underground. In addition, incineration has a high calorie burn and damages the incinerator and releases environmental pollutants such as toxic gases.
[0003]
[Problems to be solved by the invention]
Therefore, based on the above-described current situation, an object of the present invention is to provide a textile foil thread or a textile twist thread which has a property of decomposing naturally and does not impose an environmental burden upon disposal.
[0004]
[Means for Solving the Problems]
To solve the above problems, the present inventors have a structure in which a biodegradable resin film layer and a biodegradable resin layer are sequentially laminated, or a biodegradable resin film layer, and a biodegradable resin. In order to obtain a biodegradable laminated film and a biodegradable laminated sheet having such a structure, we have been dedicated to research and development. Was performed.
[0005]
As a result, the present inventors can obtain a biodegradable laminated film and a biodegradable laminated sheet having excellent adhesion strength, abrasion resistance and biodegradability by the above structure based on a number of experiments. Was found.
[0006]
Furthermore, the present inventors use the above-mentioned biodegradable resin film layer, a resin composition containing a polylactic acid-based resin as the biodegradable resin layer, and use a natural rubber-based resin as the biodegradable adhesive layer. As a result, it has been found that a biodegradable laminated film and a biodegradable laminated sheet having more excellent adhesion strength, friction resistance and biodegradability can be obtained.
[0007]
The present inventors slit the above-mentioned biodegradable laminated film and biodegradable laminated sheet into foil yarns for textiles and twisted yarns for textiles, thereby obtaining excellent adhesive strength, friction resistance and biodegradability. It has been found that a foil yarn for textiles and a twisted yarn for textiles having the following can be obtained.
[0008]
That is, the biodegradable laminated film (A) of the present invention has a structure in which at least the biodegradable resin layer (2) is sequentially laminated on the biodegradable resin film layer (1). Or a biodegradable laminated sheet (B) having a laminated structure in which the biodegradable laminated film is bonded via a biodegradable adhesive layer (3), and It is a twist yarn for textiles.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a preferred embodiment of the present invention will be described.
[0010]
The biodegradable resin film used in the present invention is not particularly limited as long as it has biodegradability, and may be formed from any biodegradable material. Here, the term "biodegradable" refers to the property of being converted into a low-molecular compound through the metabolism of an organism in one process of decomposition.
[0011]
Specific examples of the material of the biodegradable resin film used in the present invention include a linear polyester resin, a polylactic acid-based resin, a natural rubber-based biodegradable resin, a biodegradable polycaprolactone-based resin, and polyvinyl alcohol or a modification thereof. Biodegradable resins such as biodegradable resins, aliphatic polyester / polyether copolymers, and the like. Among these biodegradable materials, it is particularly preferable to use a polylactic acid-based resin. Further, a dye, an ultraviolet absorber, a thermal oxidation stabilizer, and the like may be added to these films as long as the effects of the present invention are not impaired, and the surfaces of the films are subjected to corona treatment, plasma treatment, sand mat treatment, or the like. In addition, a coating layer for improving adhesion may be provided in advance.
[0012]
The thickness of the biodegradable resin film used in the present invention is not particularly limited, but is preferably in the range of about 6 μm to 30 μm. Furthermore, 9 μm to 25 μm is more preferable. If the thickness is less than 6 μm, it is not preferable in terms of cost. If the thickness is more than 30 μm, the texture of the fabric may be impaired.
[0013]
The biodegradable resin used in the present invention is not particularly limited as long as it has biodegradability, and may be formed from any biodegradable material. Here, the term "biodegradable" refers to the property of being converted into a low-molecular compound through the metabolism of an organism in one process of decomposition.
[0014]
Specific examples of the material of the biodegradable resin used in the present invention include a linear polyester resin, a polylactic acid-based resin, a natural rubber-based biodegradable resin, a biodegradable polycaprolactone-based resin, and polyvinyl alcohol or a modified product thereof. And a biodegradable resin such as an aliphatic polyester / polyether copolymer. Among these biodegradable materials, it is particularly preferable to use a polylactic acid-based resin.
[0015]
The biodegradable adhesive used in the present invention is not particularly limited as long as it has biodegradability, and may be formed from any biodegradable material. Here, the term "biodegradable" refers to the property of being converted into a low-molecular compound through the metabolism of an organism in one process of decomposition.
[0016]
Specific examples of the material of the biodegradable adhesive used in the present invention include a linear polyester resin, a polylactic acid-based resin, a natural rubber-based biodegradable resin, a biodegradable polycaprolactone-based resin, and polyvinyl alcohol or a modification thereof. Biodegradable resins such as biodegradable resins, aliphatic polyester / polyether copolymers, and the like. Among these biodegradable materials, it is particularly preferable to use a natural rubber-based resin.
[0017]
The micro slit width is preferably about 0.1 mm to 1.5 mm. If the width is smaller than 0.1 mm, it is too thin and easily cut, and if it is larger than 1.5 mm, the texture of the fabric may be impaired.
[0018]
Next, the core yarn used in combination with such a foil yarn for textiles is not particularly limited as long as it has biodegradability, but natural materials such as cotton, silk, wool, and paper are preferable. The fiber may be a modified cross-section yarn or a hollow fiber, or may be a long fiber yarn or a short fiber yarn.
[0019]
【Example】
Hereinafter, the present invention will be described in detail with reference to Examples, but the present invention is not limited thereto.
[0020]
Example 1 A biodegradable resin (trade name: Biotech Color HGC, manufactured by Dainichi Seika Co., Ltd.) was applied to one surface of a transparent polylactic acid-based resin film having a thickness of 25 μm so that the dry film thickness became 1.0 μm. Thus, a biodegradable resin layer was formed to obtain a biodegradable laminated film. The obtained biodegradable laminated sheet was microslit into 80 cuts (0.378 mm width) to obtain a biodegradable textile foil thread.
[0021]
Example 2 A biodegradable resin layer is formed by applying a biodegradable resin to one side of a transparent polylactic acid-based resin film having a thickness of 15 μm so that the dry film thickness becomes 1.0 μm. Obtained. A biodegradable adhesive is applied on the surface of the biodegradable resin layer of the obtained biodegradable laminated film so that the dry film thickness becomes 3.0 μm, and the biodegradable resin layer surface of another biodegradable laminated sheet and It was laminated to obtain a biodegradable laminated sheet. The resulting biodegradable sheet was micro-slit into 70 cuts (0.432 mm width) to obtain a biodegradable textile foil thread. Further, the obtained biodegradable textile foil was wound around a 150-denier wool yarn as a core yarn with almost no gap around the outer periphery thereof, and then steam set to obtain a biodegradable textile twist yarn of the present invention.
[0022]
Comparative Example 1 The same fabric yarn as in Example 1 was obtained except that a transparent polyester terephthalate film was used instead of the transparent polylactic acid film, and a conventional synthetic resin was used instead of the biodegradable resin.
[0023]
Comparative Example 2 In Example 2, except that a transparent polyester terephthalate film was used instead of a transparent polylactic acid film, and a conventional synthetic resin and a synthetic adhesive were used instead of a biodegradable resin and a biodegradable adhesive. The same twist yarn for fabric was obtained.
[0024]
<Performance evaluation>
The biodegradability and the high elongation of the foil yarn for textile and the twisted yarn for textile obtained as described above were measured and evaluated based on the following measurement methods, respectively. Table 1 shows the results.
[0025]
(1) Evaluation method for biodegradability The obtained biodegradable foil yarn for textile and twisted yarn for textile, conventional foil yarn for textile and twisted yarn for textile are put in a composter, and after 30 days, the foil yarn / twisted yarn is obtained. Was visually observed to evaluate the biodegradability.
[0026]
(2) Strength and Elongation Measurement Evaluation Method The obtained biodegradable textile thread and conventional textile foil were measured with a universal tensile tester (trade name TENSILON / PTM-50, manufactured by Orientec Co., Ltd.). . (Sample length: 100 mm, pulling speed: 200 mm / min)
[0027]
[Table 1]
Performance evaluation results of foil and twisted yarns
Figure 2004249503
[0028]
From the results in Table 1 above, the biodegradable woven yarns obtained in Examples 1 and 2 are almost equal in strength and elongation to the woven yarns of Comparative Examples 1 and 2 using a conventionally known synthetic resin film. Since they are equivalent, it is determined that the level is sufficient for being suitably used as various materials.
[0029]
Also, from the results in Table 1 above, the biodegradable woven yarns obtained in Examples 1 and 2 were all biodegradable, and thus Comparative Example 1 using a conventionally known synthetic resin film was used. It can be seen that they have significantly better biodegradability than the woven yarns Nos.
[0030]
The embodiments and examples disclosed this time are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.
[0031]
【The invention's effect】
From the above results, it can be said that the biodegradable woven yarn of the present invention is a biodegradable woven yarn having the same high elongation as the conventional woven yarn and having excellent biodegradability. In addition, antibacterial properties of polylactic acid itself can be expected by using the polylactic acid film.
[0032]
That is, after disposal, microorganisms existing in the soil and the like completely decompose the water and carbon dioxide quickly and do not pollute the natural environment. Therefore, it can be said that the product is friendly to the natural environment.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an example of an embodiment of a twisted yarn for a biodegradable textile of the present invention.
FIG. 2 is a sectional view showing an example of an embodiment of the biodegradable laminated film of the present invention.
FIG. 3 is a sectional view showing an example of an embodiment of the biodegradable laminated sheet of the present invention.
[Explanation of symbols]
Reference Signs List 1 biodegradable resin film, 2 biodegradable resin layer, 3 biodegradable adhesive layer, 4 biodegradable core yarn A biodegradable laminated film, B biodegradable laminated sheet, C foil yarn for biodegradable textile D Twisted yarn for biodegradable textile

Claims (8)

生分解性樹脂フィルム層(1)の少なくとも片面上に生分解性樹脂層(2)を形成したことを特徴とする生分解性積層フィルム(A)。A biodegradable laminated film (A) comprising a biodegradable resin layer (2) formed on at least one surface of the biodegradable resin film layer (1). 請求項1記載の生分解性積層フィルム(A)を2枚、生分解性樹脂フィルム層(1)が外側になるように、または生分解性樹脂層(2)が外側になるように生分解性接着剤層(3)を介して貼り合わせたことを特徴とする生分解性積層シート(B)。The two biodegradable laminated films (A) according to claim 1 are biodegraded such that the biodegradable resin film layer (1) is on the outside or the biodegradable resin layer (2) is on the outside. A biodegradable laminated sheet (B), wherein the laminated sheet (B) is bonded via a hydrophilic adhesive layer (3). 生分解性樹脂フィルム層(1)は、ポリ乳酸系フィルムで構成されることを特徴とする請求項1記載の生分解性積層フィルム(A)。The biodegradable laminated film (A) according to claim 1, wherein the biodegradable resin film layer (1) is composed of a polylactic acid-based film. 生分解性樹脂層(2)は、ポリ乳酸系樹脂で構成されることを特徴とする請求項1記載の生分解性積層シート体生分解性積層フィルム(A)。The biodegradable laminated film (A) according to claim 1, wherein the biodegradable resin layer (2) is made of a polylactic acid-based resin. 生分解性樹脂層(2)が着色されている請求項1記載の生分解性積層フィルム(A)。The biodegradable laminated film (A) according to claim 1, wherein the biodegradable resin layer (2) is colored. 生分解性接着剤層(3)は、天然ゴム系樹脂で構成されることを特徴とする請求項2記載の生分解性積層シート体生分解性積層シート(B)。The biodegradable laminated sheet (B) according to claim 2, wherein the biodegradable adhesive layer (3) is made of a natural rubber-based resin. 請求項1〜2記載の生分解性積層フィルム(A)または生分解性積層シート(B)を細幅にスリットして形成した織物用箔糸(C)。A textile thread (C) formed by slitting the biodegradable laminated film (A) or the biodegradable laminated sheet (B) according to claim 1 to a narrow width. 請求項7記載の織物用箔糸と芯糸を用いて又は芯糸を用いないで撚り合わせた織物用撚糸(D)。A twisted yarn (D) for a woven fabric, obtained by twisting the foil yarn for a woven fabric according to claim 7 with or without the core yarn.
JP2003040270A 2003-02-18 2003-02-18 Biodegradable laminated film, sheet and fabric yarn Withdrawn JP2004249503A (en)

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