Highly functional polyethylene fiber, woven/knitted fabric comprising same, and glove thereof

Abstract

A highly functional polyethylene fiber which combines high heat-insulating properties with cut resistance and is excellent in productivity and suitability for passing through post-processing; and a coated elastic yarn including the fiber, a woven / knitted fabric, and a glove. The polyethylene fiber comprises polyethylene which is constituted of repeating units of substantially ethylene and which, in the fiber state, has a weight-average molecular weight (Mw) of 50,000-300,000 and a ratio of the weight-average molecular weight to the number-average molecular weight (Mn), Mw / Mn, of 4.0 or lower. The polyethylene fiber has a gel content of 100-10,000 ppm or a zero-shear viscosity in a molten state at 190 C of 8,000-300,000 (Pas).

Description

technical field [0001] The present invention relates to a polyethylene fiber having high productivity, excellent heat retention and abrasion resistance, and excellent process passability during post-processing, a knitted fabric using the fiber, and a cut-resistant glove. Background technique [0002] Currently, natural fiber cotton or organic fiber is generally used as a cut-resistant material, and gloves woven from these fibers are mostly used in fields requiring cut resistance. [0003] Therefore, as a function of imparting cut resistance, woven fabrics, knitted fabrics, etc. made of spun yarns of high-strength fibers such as aramid fibers have been devised. However, it is still unsatisfactory from the standpoint of shedding or durability. In addition, as another method, attempts have been made to improve cut resistance by combining metal fibers with organic fibers or natural fibers, but the incorporation of metal fibers has the problem of hardening the texture and affect...

AI Technical Summary

Problems solved by technology

However, since the elastic modulus of the fiber is too high, not only does it feel hard, but also the highest index value can only be obtained as 3.8 in the cut resistance measurement using the cut resistance performance test (Japanese: クープテスター).

In addition, there is also a problem of reduced operability, that is, since the strength and elastic modulus are increased to improve the cut resistance, the thermal conductivity is also increased, and when meat workers, etc. handle fresh food, their hands will become cold or On the contrary, meat and other food materials are thawed and softened by the heat of hands, so that they cannot be cut at will, etc.

In addition, there are also the following problems: due to the use of high-molecular-weight polyethylene resin, the drawing speed cannot be increased, and thus the productivity cannot be improved; Wire breakage occurs during processing

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