PE film is not just a kind of film, it can also be subdivided into high-pressure material and low-pressure material, in fact, if you are careful, you can tell the difference between the two just from the appearance of touch: PE film is tough, and the material is smooth, the hand will feel as comfortable as silk; low-pressure material is widely used because of its low cost, this material is slightly rough, but it is good in hardness and can The reason why the low-pressure material is widely used is its low cost, this material is slightly rough, but better than the hardness, to withstand the heavier goods, like plastic undershirt bags are made of low-pressure material. In fact, there is a more simple method, that is, by tearing the plastic bag after observing whether the white marks to identify the white marks is low pressure, and vice versa is high pressure. This method is based on the high density of high-pressure material, it is not easy to produce white marks. PP film is slightly worse than PE film in terms of performance, its burst mouth has been a problem for people to worry about, because of its high transparency, resulting in the attenuation of tensile strength, for this reason it is often used to hold gifts, although not practical, but because of the transparency of the problem also step into one of the necessary products of high-end goods. When identifying PP film, it is often observed by folding it, because its material is relatively hard, as long as a fold, it is easy to appear creases, which do not appear in PE film.

1、PE film is inert to the surface of the protected material, so it will not pollute and corrode the protected material. 2、Protection film has good adhesion performance to the protected material, in the process of material handling and processing, the protection film will not buckle and fall off. 3、PE film has good weather resistance and adhesion stability, short-term peeling force does not increase significantly, long-term quality remains unchanged, easy to peel without residue. 4、Low crystal point, no ghost shadow, fish scale pattern.

1、Short process flow and high labor productivity General nonwoven production, only in a continuous production line, the process is short, which is conducive to the realization of continuous production and automation. Foreign countries have adopted electronic computers to automate and control the whole production process, laying the foundation for future unmanned factories. Due to the short process, thus high labor productivity. Such as the use of spinning directly into the network method of production of non-woven fabrics, the polymer slices from the chemical plant into the feed bin, as long as a few hours to get the finished non-woven fabric, its labor productivity will be greatly improved. 2、High production speed, significant economic benefits Because the process is short and not limited by the spinning and weaving speed, the production speed is greatly improved. If the average output of automatic shuttle loom (5m/set) as 1, the output of sewing method is 90, needle punching method is 125-360, viscose method is 600, hot-rolled viscose method is 1800, spinning directly into the network method is 20-2000, wet method is 2300-10,000, its unit output can be increased by 90, the production speed is greatly improved. 10000, its unit output can be increased 90-10000 times, its economic benefits can be imagined. 3、a wide range of raw materials, not subject to any restrictions Almost every known textile fiber raw materials can be used in the production of nonwoven fabrics, whether it is natural fibers, chemical fibers and their off-cuts, all the way to asbestos fibers, glass fibers, carbon fibers, graphite fibers, metal fibers or high-temperature resistant aramid fibers, etc., which are difficult to process by traditional textile methods, can be processed on the nonwoven production equipment, and the length and fineness of the fiber changes in the non The length and fineness of the fibers are not limited in the production of nonwovens.

Needle-punched nonwovens and spunlace nonwovens are both nonwovens (also known as nonwovens) and are two of the dry/mechanical reinforcements in nonwovens. As the name suggests, the biggest difference between the two processes is the reinforcement on a mechanical needle reinforcement a mechanical high-pressure water needle reinforcement, the difference in the process directly makes its finished product functional applications are different. Needle punch cloth is generally thicker, gram weight is generally more than 80 grams, the fiber is thicker, rougher feel, the surface has small pinholes. The grammage of spunlace is commonly below 80 grams, with special 120-250 grams, but rarely. The feel of spunlace is more delicate, and there are tiny strips of spunlace patterns on the surface longitudinally.

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In order to ensure that sanitary napkin production equipment is often in an outstanding skill condition, ready to be put into operation, reduce shortcomings and downtime days, trek machinery integrity, utilization rate, reduce mechanical wear, extend the life of machinery, reduce mechanical operations and repair costs to ensure safe production, it is necessary to strengthen the maintenance of mechanical equipment