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2022

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07

GRS felt: what are the classification of felt?

Author:


  GRS FeltThe advantage of felt as a solar material is that it can not only block some sunlight and reduce the temperature under the cloth, but also make the transmitted light from direct to scattering, so that the covered crops receive light evenly and the utilization rate of transmitted light is high. Felt has the characteristics of moisture-proof, breathable, flexible, light weight, non-combustion, easy to decompose, non-toxic and non-irritating, rich in color, low in price, and recyclable. For example, polypropylene (PP) particles are mostly used as a raw material and are produced by a continuous one-step process of high temperature melting, wire spraying, wire laying, hot pressing and coiling. Felt is a dry non-woven fabric, also known as needle felt. It is made of polyester and polypropylene raw materials, after multiple needle punching and proper hot rolling. The staple fibers are unwound, carded and laid into a fiber web, which is then consolidated into a cloth by needling needles. The barbed needle has a hook. The fiber web is repeatedly pierced to reinforce the hook tape fibers to form a needle felt. Felt has no distinction between warp and weft. The fabric fibers are disorderly, and the warp and weft performance is not different. The following GRS felt manufacturers introduce the classification of felt:

1. Spunlace felt: Spunlace process is to spray high-pressure micro-water onto one or more layers of fiber mesh, so that the fibers are entangled with each other, so that the fiber mesh is strengthened and has a certain strength.

2. Hot melt felt: Hot melt felt refers to adding fibrous or powdered hot melt bonding reinforcement materials into the fiber web, and then heating, melting, cooling, and strengthening the fiber web into cloth.

3. Pulp air net felt: GRS felt manufacturer said that air net felt is also called dust-free paper and thousand craft paper felt. The wood pulp fiberboard is loosened into a single fiber state by air-laid technology, and then the fibers are bonded to the mesh curtain by air-laid method, and then the fiber network is reinforced into cloth.

4, wet felt: wet felt is placed in the water medium of the fiber raw materials loose into a single fiber, while mixing different fiber raw materials, made of fiber suspension slurry. The suspended slurry is conveyed to a netting mechanism, and the fibers are netted in a wet state and then consolidated into a cloth.

5. Spunbond felt: Spunbond felt is the polymer extruded and stretched into continuous filaments, the filaments are laid into a web, and then the web is converted into felt through self-bonding, thermal bonding, chemical bonding or mechanical reinforcement.

6. Meltblown felt: The process flow of meltblown felt: polymer feeding-melt extrusion-fiber molding-fiber cooling-mesh molding-reinforcement and cloth molding.

7. Needle felt: GRS felt manufacturer introduces that needle felt is a kind of dry felt. Needle felt uses the piercing effect of the needle to reinforce the fluffy fiber network into a solid fiber network.

8, seam felt: seam felt is a dry felt, it is the use of warp knitting coil structure to enhance the fiber network, yarn layer, non-woven materials (such as plastic sheet, plastic thin metal foil, etc.) or a combination of felt.

9, hydrophilic felt: mainly used in the production of medical and health materials, feel better, to avoid scratching the skin. Like sanitary napkins and sanitary pads, they use the hydrophilic function of hydrophilic non-woven fabrics.

 

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