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Polyethylene yarn, method for manufacturing same, and cool-feeling fabric comprising same

A polyethylene yarn, skin cooling technology, applied in the field of polyethylene yarn, can solve the problems of reduced fabric cutability and sewability, high cost of organic solvents, environmental problems and recycling, etc., and achieves excellent cutability and sewability. performance, increased productivity, and low cost

Active Publication Date: 2021-11-26
KOLON IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even though it exhibits high thermal conductivity, UHMWPE can only be produced by the gel spinning method due to its high melt viscosity, and thus has problems of causing environmental problems and requiring considerably high costs for recycling organic solvents
In addition, due to SK60 fiber has a high strength above 28g / d, a high tensile modulus above 759g / d and a low elongation at break of 3% to 4%, and in the strength-elongation curve at 1g / d strength The elongation is less than 0.5%, making it poorly weavable and too stiff, making it unsuitable for the manufacture of skin-cooling fabrics intended to come into contact with the user's skin
Additionally, due to SK60 fiber has more than 120J / m 3 high tenacity, and therefore has the problem of reduced cuttability and sewability of fabrics made using it

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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  • Polyethylene yarn, method for manufacturing same, and cool-feeling fabric comprising same
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  • Polyethylene yarn, method for manufacturing same, and cool-feeling fabric comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0113] use figure 1 The apparatus shown produces polyethylene yarn comprising 200 filaments and having a total fineness of 400 denier. In detail, will have 0.961g / cm 3 A polyethylene sheet with a density of 87660 g / mol weight average molecular weight (Mw), a polydispersity index (PDI) of 6.4, and a melt index (MI at 190° C.) of 11.9 g / 10 min was injected into the extruder 100 and to melt. The molten polyethylene was extruded through a spinneret 200 having 200 holes. The ratio L / D of the hole length (L) to the hole diameter (D) of the spinneret 200 was 6. The temperature of the spinneret was 265°C.

[0114] The filaments 11 formed while being ejected from the spinneret 200 are finally cooled to 30° C. in the quenching zone 300 by cooling air having a wind speed of 0.45 m / s, and converged into multifilaments 10 by the bunching section 400, and Move to the multi-stage stretching section 500 .

[0115] The multi-stage drawing section 500 is composed of a total of five stages...

Embodiment 2

[0118] In addition to using a 0.958g / cm 3 density, weight average molecular weight (Mw) of 98290g / mol, polydispersity index (PDI) of 8.4, and melt index (MI at 190°C) of polyethylene sheets of 6.1g / 10min, and the temperature of the spinneret Except that the temperature was 275° C., polyethylene yarns were obtained in the same manner as in Example 1.

Embodiment 3

[0120] In addition to using a 0.948g / cm 3 density, weight average molecular weight (Mw) of 78620g / mol, polydispersity index (PDI) of 8.2, and melt index (MI at 190°C) of polyethylene sheets of 15.5g / 10min, and the temperature of the spinneret Polyethylene yarns were obtained in the same manner as in Example 1, except that the temperature was 255°C and the total draw ratio was 6.8.

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Abstract

Disclosed are polyethylene yarn, a method for manufacturing same, and a cool-feeling fabric comprising same, wherein the polyethylene yarn has improved weavability to enable the manufacturing of the cool-feeling fabric that can provide a user with soft tactile sensation as well as cooling sensation and has excellent pilling resistance, abrasion resistance, cuttability, and sewability. In a stress-strain curve of the polyethylene yarn, obtained from the measurement at room temperature, (i) the elongation is 0.5 to 3% at a stress of 1 g / d, (ii) the elongation is 5.5 to 10% at a stress of 3 g / d, and (iii) the difference between the elongation at a stress of 4 g / d and the elongation at the maximum stress is 5.5 to 25%, wherein the polyethylene yarn has a toughness of 55 to 120 J / m<3> at room temperature.

Description

technical field [0001] The present invention relates to a polyethylene yarn, its manufacturing method and a skin cooling fabric comprising the polyethylene yarn. More specifically, the present invention relates to a fabric that can provide users with a soft touch and a cool or cold feeling and also has improved weavability enabling the manufacture of fabrics with excellent pilling resistance, abrasion resistance, cuttability and Polyethylene yarns of sewnable skin cooling fabrics, methods of making the polyethylene yarns, and skin cooling fabrics comprising the polyethylene yarns. Background technique [0002] As global warming progresses, there is an increasing need for fabrics that can be used to beat the heat. Factors that may be considered in developing fabrics that can be used to overcome extreme heat include (i) removing the cause of extreme heat and (ii) removing heat from the user's skin. [0003] The following methods have been proposed: a method focusing on remov...

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/088D01D5/098D01F6/04D03D15/283D03D15/50
CPCD01D5/088D01D5/098D01F6/04D03D15/283D03D15/50D10B2321/021D01D5/12D01D5/08D02G3/44
Inventor 金宰亨金基雄金成龙李相牧李信镐李英洙
Owner KOLON IND INC
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