What is non-woven fabric?
2021年1月4日What is non-woven fabric, what is the material of non-woven fabric
What is the raw material of non-woven fabric, and what is the material of non-woven fabric: Non-woven fabric (English name: Non Woven Fabric or Nonwoven cloth), also known as non-woven fabric, is composed of oriented or random fibers to form a web structure, and then It is reinforced by mechanical, thermal bonding or chemical methods.
The fibers used in the production of non-woven fabrics are mainly polypropylene (PP) and polyester (PET). In addition, there are nylon (PA), viscose fiber, acrylic fiber, polyethylene fiber (HDPE), and chlorine fiber (PVC). Advantages: Lightweight, with polypropylene resin as the main raw material, with a specific gravity of only 0.9, which is only three-fifths of cotton. It is fluffy and feels good. It is soft, composed of fine fibers (2-3D) and formed by light-point hot melt bonding. The finished product has moderate softness, comfortable feeling, water repellent and breathable. Polypropylene slices do not absorb water and have zero water content. The finished product has good water repellency. It is composed of 100% fiber and has good air permeability.
It is easy to keep the cloth dry and easy to wash. It is non-toxic and non-irritating. The product is produced with FDA food-grade raw materials, does not contain other chemical components, has stable performance, is non-toxic, non-odor, and does not irritate the skin. Antibacterial and anti-chemical agents, polypropylene is a chemically blunt substance, not moth-eaten, and can isolate the corrosion of bacteria and insects in the liquid; antibacterial, alkali corrosion, and the strength of the finished product will not be affected by erosion. Good physical properties. It is made of polypropylene spun yarn directly laid into a net and thermally bonded. The strength of the product is better than that of ordinary staple fiber products. Environmental protection. In terms of environmental protection, the raw material of most non-woven fabrics used is polypropylene, while the raw material of plastic bags is polyethylene. Although the names of the two substances are similar, their chemical structures are far apart.
The chemical molecular structure of polyethylene is very stable and extremely difficult to decompose, so it takes 300 years for plastic bags to be decomposed; while the chemical structure of polypropylene is not strong, the molecular chain can easily be broken, which can be effectively degraded , And enter the next environmental cycle in a non-toxic form, a non-woven shopping bag can be completely decomposed within 90 days. Moreover, the non-woven shopping bag can be reused more than 10 times, and the pollution to the environment after being discarded is only 10% of the plastic bag. Disadvantages Compared with textile fabrics, it has poor strength and durability and cannot be cleaned like other fabrics. The fibers are arranged in a certain direction, so it is easy to split from the right angle direction and so on.
Therefore, the improvement of the production method mainly focuses on the improvement of preventing splitting. The weaving process is spunlace. The spunlace process sprays high-pressure fine water onto one or more layers of fiber webs to entangle the fibers with each other, so that the webs can be reinforced and have a certain strength. Thermal bonding, thermal bonding non-woven fabric refers to adding fibrous or powdery hot-melt bonding reinforcement material to the fiber web, and the fiber web is heated, melted and cooled to be consolidated into a cloth. Pulp air-laid, air-laid non-woven fabric can also be called dust-free paper, dry paper-making non-woven fabric. It uses air-laid technology to open the wood pulp fiberboard into a single fiber state, and then uses the air-flow method to agglomerate the fibers on the web curtain, and then strengthen the fiber web into a cloth. Wet method, wet method non-woven fabric is to open the fiber raw materials placed in the water medium into single fibers, and at the same time mix different fiber raw materials to form a fiber suspension slurry, which is transported to the web forming mechanism, and the fibers are in a wet state.
Form a net and then reinforce into a cloth. Spunbond, spunbond non-woven fabric is formed after the polymer has been extruded and stretched to form continuous filaments, the filaments are laid into a web, and the web is bonded by itself, thermally bonded, chemically bonded or mechanically reinforced Method to make the web into a non-woven fabric.
What is the raw material of non-woven fabric, and what is the material of non-woven fabric: Non-woven fabric (English name: Non Woven Fabric or Nonwoven cloth), also known as non-woven fabric, is composed of oriented or random fibers to form a web structure, and then It is reinforced by mechanical, thermal bonding or chemical methods.
The fibers used in the production of non-woven fabrics are mainly polypropylene (PP) and polyester (PET). In addition, there are nylon (PA), viscose fiber, acrylic fiber, polyethylene fiber (HDPE), and chlorine fiber (PVC). Advantages: Lightweight, with polypropylene resin as the main raw material, with a specific gravity of only 0.9, which is only three-fifths of cotton. It is fluffy and feels good. It is soft, composed of fine fibers (2-3D) and formed by light-point hot melt bonding. The finished product has moderate softness, comfortable feeling, water repellent and breathable. Polypropylene slices do not absorb water and have zero water content. The finished product has good water repellency. It is composed of 100% fiber and has good air permeability.
It is easy to keep the cloth dry and easy to wash. It is non-toxic and non-irritating. The product is produced with FDA food-grade raw materials, does not contain other chemical components, has stable performance, is non-toxic, non-odor, and does not irritate the skin. Antibacterial and anti-chemical agents, polypropylene is a chemically blunt substance, not moth-eaten, and can isolate the corrosion of bacteria and insects in the liquid; antibacterial, alkali corrosion, and the strength of the finished product will not be affected by erosion. Good physical properties. It is made of polypropylene spun yarn directly laid into a net and thermally bonded. The strength of the product is better than that of ordinary staple fiber products. Environmental protection. In terms of environmental protection, the raw material of most non-woven fabrics used is polypropylene, while the raw material of plastic bags is polyethylene. Although the names of the two substances are similar, their chemical structures are far apart.
The chemical molecular structure of polyethylene is very stable and extremely difficult to decompose, so it takes 300 years for plastic bags to be decomposed; while the chemical structure of polypropylene is not strong, the molecular chain can easily be broken, which can be effectively degraded , And enter the next environmental cycle in a non-toxic form, a non-woven shopping bag can be completely decomposed within 90 days. Moreover, the non-woven shopping bag can be reused more than 10 times, and the pollution to the environment after being discarded is only 10% of the plastic bag. Disadvantages Compared with textile fabrics, it has poor strength and durability and cannot be cleaned like other fabrics. The fibers are arranged in a certain direction, so it is easy to split from the right angle direction and so on.
Therefore, the improvement of the production method mainly focuses on the improvement of preventing splitting. The weaving process is spunlace. The spunlace process sprays high-pressure fine water onto one or more layers of fiber webs to entangle the fibers with each other, so that the webs can be reinforced and have a certain strength. Thermal bonding, thermal bonding non-woven fabric refers to adding fibrous or powdery hot-melt bonding reinforcement material to the fiber web, and the fiber web is heated, melted and cooled to be consolidated into a cloth. Pulp air-laid, air-laid non-woven fabric can also be called dust-free paper, dry paper-making non-woven fabric. It uses air-laid technology to open the wood pulp fiberboard into a single fiber state, and then uses the air-flow method to agglomerate the fibers on the web curtain, and then strengthen the fiber web into a cloth. Wet method, wet method non-woven fabric is to open the fiber raw materials placed in the water medium into single fibers, and at the same time mix different fiber raw materials to form a fiber suspension slurry, which is transported to the web forming mechanism, and the fibers are in a wet state.
Form a net and then reinforce into a cloth. Spunbond, spunbond non-woven fabric is formed after the polymer has been extruded and stretched to form continuous filaments, the filaments are laid into a web, and the web is bonded by itself, thermally bonded, chemically bonded or mechanically reinforced Method to make the web into a non-woven fabric.
コメント