Multi Axial Structure Becomes An Important Trend Of Composite Processing Technology For Nonwovens

< p > at present, the popular interlaminar composite non < a href= "//www.sjfzxm.com/news/" > weaving material < /a > is divided into two kinds: rigid interlaminar composite material and flexible interlaminar composite material.

The fabrication of rigid interlaminar composites is a technology for producing composite materials by bonding various composite films or sheets.

A rigid interlaminar composite material is usually formed by bonding several layers of fibrous raw materials with resin.

The flexible interlaminar composite is produced by laminating a layer of fabric with another layer of fabric through thermoplastic resin or thermoplastic film. The flexible laminating also enables the film to be laminated with the fabric, and is bonded to the fabric under the condition of heating and pressing.

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< p > < strong > flame flame lamination must strengthen gas recovery < /strong > < /p >

< p > at present, because the flame lamination technology is not very environmentally friendly, the way out is to effectively invest in the < a href= "//www.sjfzxm.com/news/index_c.asp" > recycling equipment < /a >.

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< p > in the process of laminating, the most rapid and worth mentioning is flame melt lamination.

Flame lamination is a unique lamination process. Its main raw materials are synthetic leather and polyurethane foam.

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< p > polyurethane foam used mainly in foamed nonwovens for flame lamination. There are two types of polyurethane foam, polyester and polyether.

The modified polyether foam used for flame melt lamination has good adhesion strength, especially excellent anti-aging properties.

However, the technology of flame laminating has not been further developed. The main reason is that this technology is not very environmentally friendly, so the way out is to invest in effective recycling of harmful gas.

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< p > < strong > honeycomb interlayer product flexibility high < /strong > /p >

< p > honeycomb laminates made of resin impregnated fabrics have a very high weight to weight ratio. Cotton and < a href= "//www.sjfzxm.com" > glass fiber < /a > fabrics can be used as reinforcing materials in this type of laminates.

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< p > because of the different uses, processing methods and product forms of interlaminar composite products, there are many kinds of classification methods for interlayer composite fabrics, including two layers of composite, three layers of compound, three layers of different layers, and different materials, such as fabrics and fabrics, fabrics and PU foams, fabrics and rubber, fabrics and leather, fabrics and paper, fabrics and nonwovens, < a href= "//www.sjfzxm.com" > fabric < /a > polytetrafluoroethylene film, nonwoven fabric and film composite.

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Honeycomb laminates made of resin impregnated fabrics have a very high weight to weight ratio. Cotton and glass fiber fabrics can be used as reinforcing materials in this type of P.

For example, waterproofing permeable laminated nonwovens compounded nonwoven fabric with a special thin film by laminating process and become a new type of fabric with waterproof and moisture permeable function.

It not only has outstanding performance, but also has the advantages of wide selection of materials, flexible design and less pollution. It is a main direction of waterproof and moisture permeable products in the future.

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< p > there are two types of polymer film used in waterproofing permeable laminated nonwovens: one is hydrophilic type, the other is microporous.

The moisture permeation mechanism is similar to that of the microporous coating. The hydrophilic membrane takes advantage of the moisture permeability of the polymer itself, while the microporous membrane diffuses the water vapor in the microporous structure.

Laminated products can successfully solve the contradiction between water pressure and moisture permeability, and have obvious technical advantages.

At present, the most famous product in the world is the Gore-tex fabric of American GORE company.

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< p > strong > multiaxial structure becomes an important trend < /strong > < /p >.

< p > nonwovens or fibrous layers are made of randomly distributed fibers, so that the mechanical properties of fabrics in all directions are similar or similar. Therefore, non-woven fabrics have excellent processability for laminated products.

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< p > woven fabric, knitted fabric and nonwoven fabric can be produced by interlaminar compounding technology.

The fibers used for the production of the products should be selected according to the performance characteristics of the products.

Cotton fiber has good strength and relatively low elongation, which is conducive to the production of dimensionally stable rigid laminated products.

Therefore, the use of cotton fiber can make the product obtain good mechanical properties, such as high impact strength, superior adhesion strength, etc.

The nonwoven fabric made of cotton and polyester blended has high strength and can be used to produce laminated lightweight substrates.

However, before applying laminates, cotton fibers must be pre treated to remove slurry and sometimes need to be scoured and bleached.

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< p > < a href= '//www.sjfzxm.com > nylon < /a > polyamide < /a > excellent insulation and high impact strength, good insulation and high impact strength in the production laminates, in the antiaging and acid resistance of acrylic fiber in the antiaging and acid resistance of the acrylic fiber in the in in in the in in in the in in in in in in in in in in in in in in in in in in in in in in in in in in in in in in in in in in in in in in in in in by in in in in in in in in in by in in in in in in in in by in in in in in in in in by in in in in in in in in in in by in in in in in in in in in by in in in in in in in by in in in in in in in by in in in in in in in by in in in in in in by in in in in in in by in in in in in in by in in in in in in by in in in in in by in in in in in in by in in in in in in by in in in in in in by in in in in in in in by in in in in in in in in by in in in in in in in in in in by in in in in in in in in in in in in in in in in in in in in in in in in in in in in in in in in in in in in in in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in the in in in the in in the in in the in in the in in the in in in the in in the in in in the in in the in in the the use of some special high performance products can significantly improve the protective performance of the products.

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< p > nonwovens or fibrous layers are made of randomly distributed fibers, so that the mechanical properties of fabrics in all directions are similar or similar. Therefore, non-woven fabrics have excellent processability for laminated products.

The multi axial structure of woven, nonwoven and knitted fabrics is also an important trend in the development of interlaminar composite products.

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