Conjugated Stretch Yarn, Gloves and Stretch Fabric with Openwork Pattern
a technology of stretch fabric and conjugated stretch yarn, which is applied in the field of composite elastic yarn, can solve the problems of inability to achieve sufficient durability, inability to use polyurethane elastic yarns especially, and significantly inferior chemical resistance and weatherability of general-purpose yarns, and achieve excellent chemical resistance.
Inactive Publication Date: 2007-10-18
TOYO TOYOBO CO LTD
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
[0020] The present invention aims to solve the above-described problems. The first object of the invention is to provide a composite elastic yarn with excellent chemical resistance and weather resistance.
[0021] The second object of the invention is to provide a cut-resistant glove with high resistance to chemicals and weathering.
[0024] (ii) When the inelastic fiber in such a composite elastic yarn is for example a high-tenacity polyethylene filament, a composite elastic yarn with extremely high tenacity is provided. A glove made of a fabric comprising such a composite elastic yarn ensures a comfortable fit and demonstrates excellent cut resistance, chemical resistance, and weather resistance. Furthermore, a glove manufactured using such a composite yarn has quick-drying properties.
[0045] In the composite elastic yarn of the present invention, a polyolefin-based fiber is employed for elastic and inelastic fibers, and accordingly, excellent chemical resistance and weatherability are provided. Furthermore, when, for example, a high-molecular-weight polyethylene fiber or like high tenacity fibers are used as an inelastic fiber, the resulting composite yarn as a whole has extremely high tenacity.
[0046] The composite elastic yarn of the present invention is thus especially suitable as a material for gloves that are used for handling sharp-edged tools or like activities that might cause injuries. Materials conventionally employed for cut-resistant gloves include aramid fibers, metal fibers, glass fibers and the like. However, gloves produced with these materials have problems such as difficulties in knitting, inconveniences caused by conductivity, and the danger that fibers might break and pierce the hand. In this regard, gloves produced from the composite elastic yarn of the present invention are advantageous as the fibers therein have excellent flexibility which leads to an ease in knitting, possess electrical insulating properties, and do not easily break.
[0047] Furthermore, the present invention provides a stretchable fabric having a watermark-like pattern thereon, which has not been achieved before. More specifically, the stretchable fabric of the invention comprises an elastic fiber and an inelastic fiber, and the elastic fiber is a cross-linked polyolefin-based fiber which is highly resistant to chemicals; due to such a structure, the watermark-like pattern is formed thereon by destroying the inelastic fibers with a burn-out printing method. Unlike urethane-based elastic fibers, cross-linked polyolefin-based fibers do not yellow easily, and thus a watermark-like design with high transparency can be maintained over long-term use. The stretchable fabric of the invention is of beautiful appearance and has excellent stretchability, and hence is suitable for a wide range of uses, including applications to underwear and sportswear.
Problems solved by technology
Although polyurethane elastic fibers have high stretchability, their chemical resistance and weatherability are significantly inferior compared with general-purpose yarns.
For this reason, sufficient durability cannot be achieved when polyurethane elastic fibers are used in garments which are to be subjected to industrial cleaning involving chlorine sterilization; in swimming suits; and in materials which are exposed outdoors, such as car sheets.
However, the nature of polyurethane elastic yarns remains substantially unchanged, and such polyurethane elastic yarns cannot be used especially under severe conditions (see, for example, patent document 1 and patent document 2).
However, these fibers are inappropriate for use as a material that is exposed to harsh environments, such as prolonged outdoor exposure or industrial cleaning with chlorine or other chemicals, because they hydrolyze and / or turn yellow under such conditions.
However, the use of gloves made of metal fiber yarns is limited due to the poor flexibility of metal fiber yarns and resulting difficulties in knitting, and also due to the electrically conductive nature thereof.
Glass fibers may break in a glove, and the broken ends of the fibers occasionally project from the inner surface of the glove and stick into the hand.
Aramid fibers are prone to lose their strength by contact with strong acid or strong alkali, and further, if exposed to natural light, the fibers are discolored and / or their abrasion resistance is decreased.
Although high-tenacity polyethylene fibers do not exhibit the above-described defects, because these fibers are poor in stretchability, the stretchability of the knitted fabric of a glove obtained therefrom is imparted only by its knitting structure.
Stretchability of the glove is thus occasionally insufficient for some uses; the glove cannot be easily put on or taken off, and also, the adherence thereof to the skin may be inadequate.
However, as mentioned above, the chemical resistance and weatherability of polyurethane elastic yarns are far worse than those of general-purpose yarns.
As a result, the adverse characteristics of polyurethane elastic fibers as described above significantly degrade the physical properties of the glove.
Quick-drying properties are required in gloves for use in activities using water and in outdoor leisure activities, because wet gloves give a strong feeling of discomfort to the wearer and also undermine workability.
However, conventional gloves do not possess a quick-drying nature.
As described above, a cut-resistant glove which provides a comfortable fit and has excellent chemical resistance, weatherability, and quick-drying properties has not yet been achieved.
However, watermark-like pattern formation by opal finishing is not possible on such a fabric because, as with the above-described general-purpose inelastic filament yarns, polyurethane elastic fibers have poor acid resistance.
Moreover, polyurethane fibers easily turn yellow and thus are not suitable as materials for fabrics on which to form a watermark-like pattern.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Experimental program
Comparison scheme
Effect test
example 1-1
[0115] A yarn made of a 70-dtex monofilament manufactured by melt-spinning an α-olefin-copolymerized polyethylene was cross-linked using an electron beam, obtaining a cross-linked polyolefin fiber (herein after referred to as fiber (A)) (product name: DOWXLA, manufactured by Toyobo Co., Ltd.). Two specimens of the obtained fiber (A) were put together, drafted to 1.55 times, and plied and twisted together with a 440-dtex multifilament fiber (herein after referred to as fiber (B)), which is an ultra-high-molecular-weight polyethylene fiber (product name: SK60, manufactured by Toyobo Co., Ltd.) having a tensile strength of 27 cN / dtex and a resistance of incipient tension of 900 cN / dtex, to obtain a composite elastic yarn (herein after referred to as fiber (X)) wherein the number of twists was 200 T / M. A glove was manufactured with a fashioning stitch machine using only the obtained composite elastic yarn.
example 1-2
[0116] Using one specimen of fiber (A) instead of two, a composite elastic yarn (herein after referred to as fiber (Y)) was obtained in otherwise the same manner as in Example 1-1. Using a fashioning stitch machine, yarn (Y) was knitted with a polypropylene fiber-processed yarn having 84 dtex, 36 filaments, and a glove thereby obtained.
example 1-3
[0117] Using a nylon filament yarn having 77 dtex, 24 filaments instead of the polypropylene fiber-processed yarn, a glove was manufactured in otherwise the same manner as in Example 1-2. Wet coating with a urethane resin was applied to the palm side of the obtained glove.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract
A composite elastic yarn includes a polyolefin-based elastic fiber and a polyolefin-based inelastic fiber. A cross-linked polyolefin-based elastic fiber, for example, is employed as the polyolefin-based elastic fiber, and a high molecular-weight polyethylene fiber having a weight average molecular weight of at least 10×105, for example, is employed as the polyolefin-based inelastic fiber. Such a composite elastic yarn is suitable for use as a glove material. The yarn may be used to produce a stretchable fabric with a watermark-like pattern including a cross-linked polyeolefin-based elastic fiber and an inelastic fiber, and having a watermark-like pattern produced by complete or incomplete removal of the inelastic fiber with partial burn-out printing.
Description
REFERENCE TO RELATED APPLICATIONS [0001] This is a national stage application under 35 USC 371 of International Application No. PCT / JP2005 / 015712, filed Aug. 30, 2005, which claims priority from Japanese Patent Application Nos. 2004-256844 and 2004-343995, filed Sep. 3, 2004, and Nov. 29, 2004, respectively, the entire disclosures of which are incorporated herein by reference.FIELD OF THE INVENTION [0002] The present invention relates to a composite elastic yarn with excellent chemical resistance and lightfastness, suitable for application to objects where durability is required, such as swimsuits, underwear, outerwear, diaper covers, sanitary products, outdoor products like tents, and industrial materials. [0003] The present invention further relates to a cut-resistant glove which has excellent chemical resistance, lightfastness, and quick-drying properties, and is suitably used when handling iron plates with sharp edges or burrs; dealing with glass; engaging in dangerous work usin...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Patent Timeline
Login to View More IPC IPC(8): D04B1/18A41D19/00D04B7/34D06Q1/02
CPCA41D19/00A41D2500/10D04B1/28D02G3/328D06Q1/02A41D2500/20A41D19/01529Y10T442/413D04B1/18D10B2321/02
InventorKOTANI, TETSUOMATSUI, YOSHIHIROHAMAGUCHI, YUJIMIYAJIMA, MITSUOOHIE, YOSHINOBUGOTO, MASUMI
OwnerTOYO TOYOBO CO LTD