Non-porous breathable film as well as preparation method and application thereof

A film and surface structure technology, applied in applications, chemical instruments and methods, building components, etc., can solve the problems of film separation, high production cost, poor film flexibility, etc., to reduce elastic modulus, improve adhesion performance, The effect of improving flexibility
CN110481124AActive Publication Date: 2019-11-22沈勇
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
沈勇
Publication Date
2019-11-22

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Abstract

The invention discloses a non-porous breathable film and application thereof. The film comprises a core layer structure and same or different surface layer structures on the upper side and the lower side of the core layer structure, wherein the material of the core layer structure is copolymerized polyether ester, and the material of the surface layer structures is block copolymerized polyether ester. The film has the characteristics of high air permeability, excellent water pressure resistance, ultraviolet resistance, no yellowing after long-time use and the like, and can be used for preparing textile or shoe material composite fabrics with low cost and good air permeability, antibacterial and air-permeable medical composite fabrics, building composite fabrics with requirements on air permeability and the like. The invention further discloses a method for preparing the film, the method is an extrusion casting method, the cost is low, the efficiency is high, and the method is suitablefor mechanical production.
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Description

technical field

[0001] The invention relates to the technical field of new materials, in particular to a non-porous and air-permeable film and its preparation method and application. Background technique

[0002] Non-porous breathable film is a film that can pass through air and other gases, but can block liquids. It is easy to ventilate, has the characteristics of soft fabrics, and is also waterproof because it can block liquids. Non-porous breathable film is a functional material, also known as "breathable film", which is usually used in occasions that require both breathability and waterproof. This special function makes it have a position that other films cannot replace.

[0003] The current non-porous breathable film is a single-layer structure, which is extruded from a hydrophilic resin through a single-layer die. The structure of the film is a single structure, which has the following disadvantages:

[0004] 1. The film structure is single and the production cost is...

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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