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Spunlace nonwoven based on polytetrafluoroethylene films and preparation technology of spunlace nonwoven

A technology of polytetrafluoroethylene and spunlace non-woven fabrics, which is applied in the direction of non-woven fabrics, textiles and papermaking, filament/thread forming, etc., can solve the problem of affecting the excellent characteristics of non-woven fabrics, low fiber strength utilization, and overall Poor stability and other problems, to achieve the effect of enhanced mechanical properties, good water permeability, and good texture

Active Publication Date: 2017-06-13
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A kind of preparation technology of the spunlace non-woven fabric based on polytetrafluoroethylene film, comprises the steps:

[0045] (1), material preparation: according to the production demand, prepare the polytetrafluoroethylene film according to the quantity;

[0046] (2), stacking: stack the PTFE film as required;

[0047] (3) Spunlace reinforcement: Spunlace uses 3 spunlace heads with a pressure of 10Mpa to spray high-pressure fine water flow onto the stacked PTFE film layer in step (2), so that the PTFE film layer Fiber opening, the fineness range of PTFE fibers is 0.5dtex, and the strength range is 4.5cN / dtex. The high-pressure fine water jets entangle the fibers and compress the fibers to form a fiber mesh layer;

[0048] (4) Stretching: After spunlace for 50 minutes, the compressed fiber mesh layer is stretched, the stretching strain is 10%, and the stretching rate is 500 mm / min, pull it along one direction stretch;

[0049] (5) Secondary spunlace reinfor...

Embodiment 2

[0053] A kind of preparation technology of the spunlace non-woven fabric based on polytetrafluoroethylene film, comprises the steps:

[0054] (1), material preparation: according to the production demand, prepare the polytetrafluoroethylene film according to the quantity;

[0055] (2), stacking: stack the PTFE film as required;

[0056] (3) Spunlace reinforcement: Spunlace uses 4 spunlace heads with a pressure of 30Mpa to spray high-pressure fine water flow onto the stacked PTFE film layer in step (2), so that the PTFE film layer Fiber opening, the fineness range of PTFE fibers is 15dtex, and the strength range is 3.5cN / dtex. The high-pressure fine water jets entangle the fibers and compress the fibers to form a fiber mesh layer;

[0057] (4) Stretching: After 55 minutes of spunlace, the compressed fiber mesh layer is stretched, the stretching strain is 35%, and the stretching rate is 3500 mm / min, first along one direction Stretch, then stretch in the other direction;

[00...

Embodiment 3

[0062] A kind of preparation technology of the spunlace non-woven fabric based on polytetrafluoroethylene film, comprises the steps:

[0063] (1), material preparation: according to the production demand, prepare the polytetrafluoroethylene film according to the quantity;

[0064] (2), stacking: stack the PTFE film as required;

[0065] (3) Spunlace reinforcement: Spunlace uses 5 spunlace heads with a pressure of 50Mpa to spray high-pressure fine water flow onto the stacked PTFE film layer in step (2), so that the PTFE film layer Fiber opening, the fineness range of PTFE fibers is 20dtex, and the strength range is 4.0cN / dtex. The high-pressure fine water jets entangle the fibers and compress the fibers to form a fiber mesh layer;

[0066] (4) Stretching: After spunlace for 60 minutes, the compressed fiber mesh layer is stretched, the stretching strain is 50%, and the stretching rate is 5000 mm / min, stretching along one direction stretch;

[0067] (5) Secondary spunlace rein...

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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Abstract

The invention discloses spunlace nonwoven based on polytetrafluoroethylene films and a preparation technology of the spunlace nonwoven. The spunlace nonwoven comprises one or more polytetrafluoroethylene film layers, the polytetrafluoroethylene film layers are split by jetting high-pressure micro waterflow to the polytetrafluoroethylene film layers, fibers are composited into a fiber mesh in an entangling mode through high-pressure micro waterflow jetting, and repeated spunlacing is conducted, so that the fiber mesh can be compressed and reinforced, and after the fiber mesh is dried, the spunlace nonwoven based on the polytetrafluoroethylene films is formed. The preparation technology comprises the steps of 1 material preparing, 2 laying, 3 spunlacing and reinforcing, 4 drawing, 5 secondary spunlacing and reinforcing, 6 drying and 7 rolling. According to the spunlace nonwoven based on the polytetrafluoroethylene films and the preparation technology of the spunlace nonwoven, the spunlace nonwoven is formed and manufactured at a time, therefore, the overall mechanical performance of the spunlace nonwoven is enhanced, and the spunlace nonwoven not only has the higher tear strength, tensile breaking strength and bursting strength, but also has the good water permeability and air permeability and is wide in application field.

Description

technical field [0001] The invention relates to the technical field of nonwoven fabrics, in particular to a polytetrafluoroethylene film-based spunlace nonwoven fabric and a preparation process thereof. Background technique [0002] PTFE is the English abbreviation of polytetrafluoroethylene. It is currently recognized as the king of plastics in the world. It has the advantages of anti-ultraviolet radiation, chemical corrosion resistance, and abrasion resistance. Polytetrafluoroethylene fibers have excellent chemical stability and excellent corrosion resistance. Compared with other synthetic fiber varieties; the surface of the fiber has a waxy feel and a small friction coefficient; at the same time, it also has good weather resistance and flex resistance. [0003] Non-woven fabric is also defined as non-woven fabric, which is composed of oriented or random fibers. Rich, cheap, recyclable and so on. For example, polypropylene (pp material) pellets are mostly used as raw mat...

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H3/007D04H3/11D01D5/42
CPCD01D5/423D04H3/007D04H3/11D10B2321/042
Inventor 马建伟蒋志清
Owner QINGDAO UNIV