The most popular nonwoven composite processing tec

Nonwovens composite processing technology has entered a high-speed transition period

nonwovens composite processing can not only make up for the defects and deficiencies of the previous materials, but also endow products with more and better new properties. In the modern nonwovens processing technology, the function and importance of composite processing are increasing day by day, and the interlayer composite process is developing fastest

currently, the more popular interlaminar composite nonwovens are divided into rigid interlaminar composites and flexible interlaminar composites. The processing of rigid interlaminar composites is a technology to produce composite products by bonding various composite films or sheets. Usually, several layers of fibrous raw materials are bonded together with resin to produce a rigid interlaminar composite with the required thickness. Flexible interlaminar composites are produced by laminating one layer of fabric with another layer of fabric through thermoplastic resin or thermoplastic film. Flexible lamination can also make the film laminated with the fabric and bonded to the fabric under heating and pressure

flame fusion lamination must strengthen gas recovery

at present, because the flame fusion lamination technology is not very environmentally friendly, the way out is to invest in the recovery equipment that can effectively solve the harmful gas

among the processing methods of laminating composite process, flame fusion lamination is the fastest developing and most worth mentioning. Flame fusion lamination is a unique lamination process. Its main raw materials are synthetic leather base cloth and polyurethane foam

high flexibility of honeycomb interlayer products

honeycomb laminated nonwovens made of resin impregnated fabrics have a high strength to weight ratio. Cotton and glass fiber fabrics can be used as reinforcing materials in this type of lamination

because of the use, processing method Product shape "It can be very soft or hard, so there are many types of interlaminar composite fabrics, including two-layer composite, three-layer composite and composite with different layers or more, as well as composite between different materials, such as fabric and fabric, fabric and PU foam material, fabric and rubber, fabric and leather, fabric and paper, fabric and nonwovens, fabric and polytetrafluoroethylene film, nonwovens and film.

Honeycomb laminated nonwovens made of resin impregnated fabrics have high strength to weight ratio. Cotton and glass fiber fabrics can be used as reinforcing materials in this type of lamination. For example, the waterproof and permeable laminated nonwovens are made of nonwovens and a special layer of film through the lamination process to 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 range of material selection, flexible design and less pollution in technology. It is a main direction of waterproof and moisture permeable products in the future

there are two types of polymer films used in the waterproof and permeable laminated nonwovens: one is hydrophilic; The other is microporous. Its moisture permeability mechanism is similar to that of microporous coating. Hydrophilic film uses the moisture permeability of polymer itself, while microporous film uses the diffusion of water vapor in microporous structure. Laminated products can successfully solve the contradiction between water pressure resistance and moisture permeability, and have obvious technical advantages. At present, the most famous product in the world is Gore Tex fabric of American Gore company

multi axial structure has become an important trend

nonwovens or fiber layers are made of randomly distributed fibers, which can make the mechanical properties in all directions of the fabric plane the same or similar. Therefore, nonwovens have excellent processing performance for laminated products

woven fabrics, knitted fabrics and nonwovens can all be produced by interlaminar composite processing technology. The fibers used in the production of such products shall be selected according to the performance characteristics of the products. Cotton fiber has good strength and relatively low extensibility, which is conducive to the production of rigid laminated products with stable size. Therefore, the use of cotton fiber can make the product obtain good mechanical properties, such as high impact strength, superior bonding strength and so on. The nonwovens blended with cotton and polyester have high strength and can be used to produce laminated light and thin base fabrics. However, before the cotton fiber is used for lamination, it must be pretreated to remove the pulp, and sometimes it needs to be boiled and bleached

in addition, nylon has excellent insulation and high impact strength, which can be used to produce laminated electrical products; Acrylic fiber has good anti-aging and acid resistance. In glass fiber reinforced laminate, this fabric can be used as a covering layer. Covering with acrylic fiber can improve wear resistance, chemical corrosion resistance and weather fastness; Polyester has good chemical resistance, weather resistance and wear fastness, and its application in nonwoven laminated products is gradually expanding; Other fibers include some newly developed high-performance fibers to adapt to samples of different thicknesses, such as Nomex, Kevlar, high-density polyethylene, etc. when developing some high-performance special products, from the perspective of fixed investment expenditure and the acceleration of plastic product production, the protection performance of the product double screw rod series can be significantly improved

nonwovens or fiber layers are made of randomly distributed fibers, which can make the mechanical properties in all directions of the fabric plane the same or similar. Therefore, nonwovens have excellent processing performance for laminated products. The multi axial structure composed of woven, nonwoven and knitted fabrics is also an important trend in the development of interlaminar composite products