Ethylene copolymer modified oriented polyester films, tapes, fibers and nonwoven textiles

A technology of copolymers and textiles, applied in the direction of single-component polyester artificial filaments, etc., can solve problems such as reduction in elongation, loss of physical properties, and difficulty in achieving goals for polyester compositions
CN1898306AInactive Publication Date: 2007-01-17EI DU PONT DE NEMOURS & CO
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
EI DU PONT DE NEMOURS & CO
Publication Date
2007-01-17
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

Disclosed are films, tapes, and melt-spun fibers prepared from compositions comprising (a) at least one polyester polymer; and (b) from about 1 to 30 weight % of at least one ethylene copolymer such as ethylene / vinyl acetate dipolymers, ethylene / vinyl acetate terpolymers, ethylene / alkyl (meth)acrylate dipolymers, ethylene / alkyl (meth)acrylate terpolymers, functionalized ethylene copolymers, ethylene / acid copolymers, and salts thereof. The films, tapes and fibers exhibit improved tensile properties such as tensile strength and elongation at break compared to nonmodified polyester compositions. Also disclosed are textiles and articles prepared from the fibers described.
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Description

technical field

[0001] The present invention relates to films, tapes and fibers comprising or prepared from polyester blends modified with ethylene copolymers, and to films, tapes and fibers comprising said modified polyesters. Spun fibers or non-woven textiles prepared from melt-spun fibers containing the modified polyester. Background technique

[0002] Oriented films comprising polyesters can be prepared using molten polymers by a variety of methods known in the art (eg, cast film extrusion or blown film extrusion). The film can be oriented in one direction by thermally stretching in the machine direction and annealing using a stretching device. Films can also be oriented in two directions (machine and transverse) using suitable stretching equipment. Oriented polyester films are useful in a variety of packaging applications.

[0003] Likewise, various tapes can be prepared from extruded polyester films. Flat films can be quenched by extrusion ...

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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