JP2004250806A - Biodegradable woven fabric yarn - Google Patents

Biodegradable woven fabric yarn Download PDF

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Publication number
JP2004250806A
JP2004250806A JP2003040193A JP2003040193A JP2004250806A JP 2004250806 A JP2004250806 A JP 2004250806A JP 2003040193 A JP2003040193 A JP 2003040193A JP 2003040193 A JP2003040193 A JP 2003040193A JP 2004250806 A JP2004250806 A JP 2004250806A
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JP
Japan
Prior art keywords
biodegradable
foil
yarn
woven fabric
textile
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.)
Withdrawn
Application number
JP2003040193A
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Japanese (ja)
Inventor
Kunio Sakai
邦男 酒井
Hidenobu Asada
英伸 浅田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nakai Kogyo KK
Original Assignee
Nakai Kogyo KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nakai Kogyo KK filed Critical Nakai Kogyo KK
Priority to JP2003040193A priority Critical patent/JP2004250806A/en
Publication of JP2004250806A publication Critical patent/JP2004250806A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a woven fabric foil fiber which has a naturally degradable property and does not give loads to environments, when discarded, and to provide a woven fabric twisted yarn. <P>SOLUTION: This foil fiber for the biodegradable woven fabric is characterized by micro-slitting a biodegradable resin film friendly to natural environments. The biodegradable resin film does not pollute natural environments, because of being perfectly and quickly degraded into water and carbon dioxide with microorganisms living in soil or the like, after discarded. The twisted yarn for the biodegradable woven fabric is characterized by twisting the foil fibers for the biodegradable woven fabric with core fibers or only the foil fibers. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明が属する技術分野】
本発明は、生分解性を有する織物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。しかしながら合成樹脂フィルム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】
本発明者は、上述課題を解決する為に鋭意研究を重ねた結果、生分解性樹脂フィルムをマイクロスリットして生分解性織物用箔糸が得られる。またその織物用箔糸と芯糸を用いて、または芯糸を用いないで撚り合わせることで、生分解性織物用撚糸が得ることができることを見出した。
【0005】
【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。
【0006】
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。
【0007】
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、天然高分子から製造される生分解性樹脂、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い。
【0008】
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。
【0009】
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。
【0010】
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。
【0011】
【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。
【0012】
実施例1 厚さが25μの透明なポリ乳酸系樹脂フィルムを0.379mm幅(80切り)にスリットして、透明な生分解性織物用箔糸を得た。
【0013】
実施例2 厚さが15μの透明なポリ乳酸系樹脂フィルムを0.432mm幅(70切り)にスリットして、透明な織物用箔糸を得た。この織物用箔糸を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。
【0014】
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た以外は実施例1に同じ透明な織物用箔糸を得た。
【0015】
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た以外は実施例1に同じ織物用撚糸を得た。
【0016】
<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。
【0017】
(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。
【0018】
(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)
【0019】
【表1】

Figure 2004250806
【0020】
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用箔糸・撚糸は、強伸度において、従来公知の非生分解性フィルムを用いた比較例1〜2の織物用箔糸・撚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。
【0021】
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用箔糸・撚糸は、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の織物用箔糸・撚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。
【0022】
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。
【0023】
【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。
【0024】
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糸の形態の一例を示す。
【符号の説明】
1生分解性織物用箔糸、2生分解性芯糸[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a woven yarn having biodegradability. 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 Textile foil yarns and textile twist yarns formed by slitting a synthetic resin film have been known. However, woven foil yarns and woven yarns made of synthetic resin films do not decompose in the natural environment or decompose at an extremely low rate. It 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]
As a result of the inventor's intensive studies to solve the above-mentioned problems, the biodegradable resin film is micro-slit to obtain a biodegradable textile foil thread. Further, they have found that a twisted yarn for biodegradable textiles can be obtained by twisting the foil yarn for textiles with the core yarn or without using the core yarn.
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a preferred embodiment of the present invention will be described.
[0006]
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.
[0007]
Specific examples of the material of the biodegradable resin film used in the present invention include a linear polyester resin, a polylactic acid resin, a biodegradable resin produced from a natural polymer, a biodegradable polycaprolactone resin, and polyvinyl alcohol. Alternatively, a biodegradable resin such as a modified product thereof, and a biodegradable resin such as an aliphatic polyester / polyether copolymer may be used. 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.
[0008]
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.
[0009]
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.
[0010]
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.
[0011]
【Example】
Hereinafter, the present invention will be described in detail with reference to Examples, but the present invention is not limited thereto.
[0012]
Example 1 A transparent polylactic acid-based resin film having a thickness of 25 μm was slit to a width of 0.379 mm (80 pieces) to obtain a transparent biodegradable textile foil thread.
[0013]
Example 2 A transparent 15 μm thick polylactic acid-based resin film was slit to a width of 0.432 mm (70 cuts) to obtain a transparent textile thread. The foil for textile was wound around a 150 denier wool yarn as a core yarn with almost no gap around the outer periphery thereof, and then set with steam to obtain a biodegradable textile twisted yarn of the present invention.
[0014]
Comparative Example 1 The same transparent foil foil for fabric as in Example 1 was obtained except that a transparent polyester terephthalate film was used instead of the transparent polylactic acid film.
[0015]
Comparative Example 2 The same twist yarn for fabric as in Example 1 was obtained except that a transparent polyester terephthalate film was used instead of the transparent polylactic acid film.
[0016]
<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.
[0017]
(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.
[0018]
(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)
[0019]
[Table 1]
Figure 2004250806
[0020]
From the results in Table 1 above, the biodegradable woven foil yarn / twisted yarn obtained in Examples 1 and 2 was the same as that of Comparative Examples 1 and 2 using a conventionally known non-biodegradable film in the high elongation. Since they are almost equivalent to foil yarns and twisted yarns for woven fabrics, they are judged to be at a level sufficient for being suitably used as various materials.
[0021]
In addition, from the results in Table 1, the biodegradable woven foil and twisted yarns obtained in Examples 1 and 2 are all composed of biodegradable materials. It can be seen that they have significantly better biodegradability than the foil yarns and twisted yarns for woven fabrics of Comparative Examples 1 and 2.
[0022]
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.
[0023]
【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.
[0024]
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 shows an example of a form of a biodegradable woven yarn of the present invention.
[Explanation of symbols]
1 Foil yarn for biodegradable textiles, 2 Biodegradable core yarn

Claims (3)

生分解性樹脂フィルムを細幅にスリットして形成したことを特徴とする生分解性織物用箔糸。A biodegradable textile foil thread formed by slitting a biodegradable resin film into a narrow width. 請求項1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ことを特徴とする生分解性織物用撚糸。A twisted yarn for a biodegradable fabric, wherein the twisted yarn is used with or without the core yarn. 芯糸が生分解性を有することを特徴とする請求項2記載の生分解性織物用撚糸。3. The twisted yarn for biodegradable textile according to claim 2, wherein the core yarn has biodegradability.
JP2003040193A 2003-02-18 2003-02-18 Biodegradable woven fabric yarn Withdrawn JP2004250806A (en)

Priority Applications (1)

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Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018116970A1 (en) * 2016-12-20 2018-06-28 株式会社村田製作所 Antimicrobial fiber

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018116970A1 (en) * 2016-12-20 2018-06-28 株式会社村田製作所 Antimicrobial fiber
JPWO2018116970A1 (en) * 2016-12-20 2019-10-24 株式会社村田製作所 Antibacterial fiber

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