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Multi-layer non-woven fabric and preparation method thereof

A production method and non-woven technology, applied in chemical instruments and methods, lamination, lamination devices, etc., can solve the problems of low tensile strength, high cost, easy bumping on the surface of composite fabrics, etc. Environmentally friendly, cost-saving effect

Active Publication Date: 2013-06-26
昆山洁宏无纺布制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Non-woven fabrics often have a single material and low tensile strength
At the same time, the surface of the composite fabric is easily scratched and loses its protective function.
In order to increase the strength of the surface of the fabric, the existing method is that the bottom layer and the surface layer are made of polypropylene spunbond non-woven fabric, the middle layer is made of PE breathable film and glued twice; but the glue must be used twice during the processing process. The cost is high, and the glue contains trace chemical components that are harmful to the human body
Therefore, there is a lack of a non-woven fabric that is economical, waterproof, and breathable while taking into account environmental protection and tensile strength.

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

[0025] A method for making a multi-layer non-woven fabric, comprising the following steps:

[0026] The first is the production of waterproof and breathable membranes. During the casting process, the high-density calcium carbonate particles are stretched longitudinally at 1:2, so that the hexagonal calcium carbonate particles and the polyethylene wrapped around them produce irregular tearing, forming gaps. , forming a waterproof and breathable membrane. Then use polyethylene and polyester two-component non-woven fabric as the material of the bottom layer and the surface layer, polyethylene and calcium carbonate as the main material of the waterproof breathable film as the middle layer material, through the magnetic powder tension controller and evenly unwind through the air tension roller .

[0027] Then, the parallelism in the vertical direction of the three-layer material is corrected by the deviation correction system. At the same time, adjust the tension. Specifically, ...

Embodiment 2

[0031] The manufacturing method of the multi-layer non-woven fabric comprises the following steps: firstly, the waterproof and breathable film is made, and the high-density calcium carbonate particles are stretched longitudinally at a rate of 1:2 in the casting process, so that the hexagonal calcium carbonate particles are wrapped in it The surrounding polyethylene produces irregular tearing, forming gaps to form a waterproof and breathable membrane. Then use polyethylene and polyester two-component non-woven fabric as the material of the bottom layer and the surface layer, polyethylene and calcium carbonate as the main material of the waterproof breathable film as the middle layer material, through the magnetic powder tension controller and evenly unwind through the air tension roller .

[0032] Then, the parallelism in the vertical direction of the three-layer material is corrected by the deviation correction system. At the same time, adjust the tension. Specifically, when...

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 relates to a multi-layer non-woven fabric, which is characterized by consisting of at least three layers, namely a bottom layer, an intermediate layer and a surface layer in turn from bottom to top which are compounded by an ultrasonic pressure point compounding or hot rolling pressure point compounding process, wherein the bottom layer and the surface layer are made of a polyethylene and polypropylene two-component non-woven fabric or a polyethylene and polyester two-component non-woven fabric; and the intermediate layer is a waterproof breathable film prepared from polyethylene and calcium carbonate serving as main materials. The non-woven fabric has silky smooth feeling while the non-woven fabric is perfectly compounded by steps of unwinding, deviation correcting, tensionadjusting, ultrasonic waves, hot rolling, slitting and coiling during preparation; and more importantly, the non-woven fabric can be formed at one time and glue is not needed in the compounding process, so that cost is saved and environmental friendliness is achieved.

Description

technical field [0001] The invention relates to a cloth and a manufacturing method thereof, in particular to a multi-layer non-woven fabric and a manufacturing method thereof. Background technique [0002] At present, in the field of disposable non-woven products, the fabrics that need to have two functions of waterproof and moisture permeability are generally polypropylene spunbonded non-woven fabrics and polyethylene breathable films, which are compounded with glue. Non-woven fabrics are often made of single material and have low tensile strength. At the same time, the surface of the composite fabric is easy to be scratched and loses its protective function. In order to increase the strength of the surface of the fabric, the existing method is that the bottom layer and the surface layer are made of polypropylene spunbond non-woven fabric, the middle layer is made of PE breathable film and glued twice; but the glue must be used twice during the processing process. The cos...

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 Patents(China)
IPC IPC(8): D06N3/04B32B27/12B32B7/04B32B37/06
Inventor 董纹吉阮雄雄
Owner 昆山洁宏无纺布制品有限公司
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