Ultrahigh molecular weight polyvinyl film-based novel nonwoven fabric and preparation technology thereof

Abstract

The invention discloses an ultrahigh molecular weight polyvinyl film-based novel nonwoven fabric and a preparation technology thereof. The novel nonwoven fabric comprises an ultrahigh molecular weight polyvinyl film layer which is bidirectionally stretched after being punctured, wherein the ultrahigh molecular weight polyvinyl film layer is split by utilizing a manner of repeated puncturing and bidirectional stretching, and fiber silks are compounded in a twisting manner and compressed to form the ultrahigh molecular weight polyvinyl film-based novel nonwoven fabric. The preparation technology comprises the following steps: (1) preparing materials; (2) paving; (3) puncturing; (4) stretching; (5) repeatedly puncturing and stretching; and (6) coiling. The ultrahigh molecular weight polyvinyl film-based novel nonwoven fabric prepared by using the preparation technology is manufactured by once forming, so that the integral mechanical performance of the novel nonwoven fabric is reinforced, the novel nonwoven fabric not only has higher tearing strength, tensile failure strength and bursting strength, but also has good permeation and ventilation performances, thus being wide in application fields.

Description

technical field [0001] The invention relates to the technical field of non-woven fabrics, in particular to a novel non-woven fabric based on ultra-high molecular weight polyethylene film and a preparation process thereof. Background technique [0002] Materials that can be used to prepare uniaxially stretched films are ultra-high molecular weight polyethylene, PTFE, polypropylene, PPS (polyphenylene sulfide), and P84 (polyimide). Ethylene fiber is currently the fiber with the highest specific strength and specific modulus in the world. It is a fiber spun from polyethylene with a molecular weight of 1 million to 5 million. Ultra-high molecular weight polyethylene fiber has low elongation at break, large work of break, and strong energy absorption capacity, so it has outstanding impact resistance and cut resistance. At the same time, it has anti-ultraviolet radiation, chemical corrosion resistance, and abrasion resistance. Etc. [0003] Non-woven fabric is also defined as no...

AI Technical Summary

Problems solved by technology

Among them, non-woven materials are the main research objects. Many domestic patents have proposed different methods of strengthening non-woven fabrics, but they are relatively cumbersome and have certain disadvantages. For example, Jinjiang Gangyi Fiber Products Co., Ltd. on June 1, 2012 The Chinese patent "A Composite Needle-Punched Non-woven Fabric" was applied for, and the patent number is 201220256454.1. The warp-knitted fabric is laid between two layers of non-woven fiber webs, and then a composite non-woven fabric is made by needle-punching. The method is to improve the overall mechanical properties of non-woven fabrics by combining organic woven or knitted fabrics with non-woven fiber webs. It has excellent characteristics of water permeability and air permeability, and the strength utilization rate of fibers is low

Wang Changyi applied for the Chinese patent "A Manufacturing Method for Nonwoven Mesh Reinforced Composite Nonwoven Fabric" on October 30, 2008. The patent number is 200810154952.3. This problem is solved by making full use of the strength of the reinforcing fiber, and the efficiency is high, but this method can only strengthen the two directions of warp and weft, and it is not suitable for non-woven fabrics with strength requirements in other directions, and the interlayer Formed by bonding, the overall stability is poor