Environment-friendly thermoplastic polyurethane (TPU) film and preparation method thereof

A kind of thin film and environmental protection technology, applied in the field of environmental protection TPU film and its preparation, can solve the problems of poor tear strength of TPU film products, poor heat resistance of TPU film, easy stickiness of TPU film, etc., and achieve stickiness and tear strength Improvement and low production cost
CN102964808AInactive Publication Date: 2013-03-13FUJIAN SIJIA ENVIRONMENTAL PROTECTION MATERIAL TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FUJIAN SIJIA ENVIRONMENTAL PROTECTION MATERIAL TECH
Publication Date
2013-03-13
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention discloses an environment-friendly thermoplastic polyurethane (TPU) film. The environment-friendly TPU film comprises TPU particles, propene polymer (PP) particles, a compatilizer, a PP functional masterbatch and a TPU color masterbatch. The preparation method of the environment-friendly TPU film comprises the following steps: (1) weighing the components based on the formula and mixing uniformly; (2) drying the uniformly mixed components in step (1) in a dehumidification dryer for 3-5h at 80-90 DEG C, and feeding the components into a casting machine through a feeding system, and extruding; (3) and embossing the surface of the TPU film subjected to tape casting in step (2). The prepared TPU film is high in thermal stability and tearing strength, is unlikely to be sticky at high temperature, and is improved in processing performance and low in production cost. The strength (particularly tearing strength) of products produced by the TPU film is improved.
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Description

technical field

[0001] The invention relates to a TPU film, in particular to an environment-friendly TPU film and a preparation method thereof. Background technique

[0002] TPU film is a functional film, which has the characteristics of high strength, good toughness, cold resistance, oil resistance, aging resistance, weather resistance, environmental protection, non-toxic, decomposable and other characteristics unmatched by other plastic materials; at the same time, it has high waterproof and moisture permeability, windproof, It has many excellent functions such as cold protection, antibacterial, warm, anti-ultraviolet and energy release, and is widely used in various fields.

[0003] However, the existing TPU film has poor heat resistance, and the TPU film tends to become sticky at high temperature. In order to avoid the problem of high temperature stickiness of TPU film, it is often necessary to add a large amount of slip agent, which will cause the slip agent in TPU fil...

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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