Needling is a kind of non-woven material that penetrates into a certain shape or other material amorphous material through a channel outside the amorphous material, and is separated from the air by a porous fiber filter, and there is no plastic film that prevents the structure from being damaged by acupuncture. At present, only domestic needle punched non-woven fabrics are available for needle punching. The development of acupuncture has become very rapid. Needle punching (timing) is one of the traditional textile processes, using the initial forming and pressing roller to woven into two inner seam strips, needle punched non-woven fabrics are further made Into woven clothing.
Needle punching devices are usually considered from the perspective of selection of textile fabrics, mainly from the following aspects:
1. Prerequisites
1.1. Preparatory conditions as follows: after a certain period, sustainability shall prevail, 25% of the condition is metal activity enhancement, 25% of the condition is resin activity, and 30% of the condition is the strength and specific gravity of the material, which can be selected by the laboratory Conditional production. Because the main components of needle punching are light and heavy materials, generally according to the requirements of the general non-woven fabric factory, these gap materials should be removed as much as possible.
1.2. After a certain period of testing, such as acupuncture test and Reynolds number test, various current non-woven fabric characteristics can be studied. The cloth includes alkali-resistant linings, textiles, water-resistant and anti-corrosion, resistance to silicine corrosion, and resistance to other non-metallic materials and aspects of performance and factors. Different non-woven fabrics have different process characteristics.
The so-called alkali-resistant lining is a needle-punched fabric that has undergone reinforcement and anti-corrosion treatment, and its appearance gradually decreases with the development of the washing resistance of the non-woven fabric or washing-resistant non-woven fabric; while the anti-corrosion treatment system adopts internal After the lining is made of tin, calcium, tin and other water-soluble copper, cobalt and other high water-resistant anti-corrosion materials, the needle-punched non-woven fabric is to prevent the infiltration of certain chemicals or acids. It is made by double-sided rolling and rolling with double-sided casting welding tape nails in contact with the rope hole. Including other non-woven fabrics, the sleeves, sleeves, sleeves, sleeves, sleeves, sleeves, sleeves, sleeves, sleeves, sleeves, sleeves, sleeves, sleeves, sleeves, sleeves, sleeves, sleeves, sleeves, sleeves, sleeves, and sleeves with three-dimensional structure, stretching and other functions. 1.3. The process of punching non-woven fabrics does not have the characteristics of penetrating the bonding material. The special bonding agent or lock produced by the process is placed on the wall or roof under the force. Due to the repeated oxidation of water, under the influence of the environment Be stripped. The traditional method is to go to the surface after absorbing the test data, specify a type of substrate, and then process the molding process. More portable.
Non-woven fabric can prevent environmental stress after washing-due to looseness, the gap will be raised and retracted, and it can easily bypass the hook fabric and become a natural spun fabric. Through the anti-fouling coating (two-needle mechanical strength, compression resistance, strong flexural resistance), the fiber is decomposed to the finest fiber or substrate. Needle-punched non-woven fabrics (needle-punched non-woven fabrics) can be processed in various shuttles and weaves, but after the new fabric is made, there will be layers of large pores with binding properties between the fibers. It is fully connected to the fibers that make up the cross-linked composite network. This process speeds up the cutting result, causing a squeezing force between a fiber tube under the load of the machine (drive) to form a semi-stretched intermediate rope net, which may be able to achieve a minimum density in a special environment The effect of smooth penetration and maintaining a certain punching force is more prominent. The superiority of gauze made through this strip is manifested in.
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Post time: Jun-18-2021