A major type of plastic foil is plastic film， and plastic film is the largest variety of plastic products in my country. If it is classified according to the resin raw materials used for processing plastic film, plastic film can be divided into polyethylene (PE), polypropylene (PP) ), polyvinyl chloride (PVC), nylon (PA), etc.

　　Polyethylene (PE) film is one of the most productive types of plastic films. It can be divided into high pressure and low density according to the density

　　Polyethylene (commonly known as high pressure or LDPE) and low pressure high density polyethylene (commonly known as low pressure or HDPE).

　　How to identify this plastic called polyethylene (PE)? The commonly used methods of identifying plastics are burning with fire. Take their different situations after burning as the standard for distinguishing: burning situation: easy; burning flame situation: melting and dripping, upper yellow and lower blue; situation after leaving the fire: continue to burn; smell: paraffin burning smell;

　　High pressure low density polyethylene (LDPE) is a tough, waxy, slightly transparent material. It has good comprehensive properties, excellent mechanical properties and low temperature resistance, good chemical resistance (especially acid, salt and inorganic solutions), but it is more sensitive to hydrocarbons, halogenated hydrocarbons, oils and greases , so absorption and swelling will occur, and some other organic compounds with certain polarity, such as detergents, vegetable oils, etc., can cause environmental stress cracking. Its electrostatic problem is also more prominent, so it is necessary to add antistatic agent. Certain additives can make it slippery. It has a good barrier to water and water vapor, but not to air. It can be printed by a variety of methods, such as offset printing, photo printing and screen printing. But the membrane must be surface treated.

　　Zhejiang (Shanghai) TNME Printing Material Co., Ltd. is a Paper Foil Manufacturersturers. Its main products are Cold Foil and other related products. Welcome to consult and guide!