A composite film refers to a new packaging material composed of two or more films laminated together. Composite film is one of the fastest growing packaging materials in recent years. It has developed rapidly because a single type of film cannot meet the requirements of effectively protecting goods and beautifying goods. The composite film can be used as a packaging material with excellent performance. Nowadays, there are hundreds of varieties of composite films, and the number of composite layers has also grown from the first two layers to more than 10 layers. The composite film is made of a plastic film and then combined with other materials such as paper, aluminum foil, cellophane and the like. Its main performance is as follows: 1. It has good heat sealability. Many films, such as stretched polypropylene and polyester, have poor heat sealability, but when combined with polyethylene with excellent heat sealability, the heat sealability can be greatly improved. The vinyl film is an inner layer; 2. It has good air tightness, moisture resistance and heat resistance. Cold resistance, aroma retention, UV resistance and other properties can effectively protect goods, especially beneficial: preservation of food; 3, has good product performance, composite film has good transparency, light oceanity, good printability, suitable for decoration, plus good rigidity, crisp, good shelf effect, attract customers; 4, has excellent mechanical properties, it has good tensile strength, impact resistance, tear resistance, puncture resistance, bending resistance, pressure resistance and other properties, coupled with good adaptability, easy to mechanized operation; 5, lower. Under the premise of ensuring comprehensive performance, it can use a high-low-cost material combination method to manufacture composite films, so the total cost is low. 6, lighter, easy to carry, it can replace some metal cans, glass bottles and other packaging containers, the weight is greatly reduced, easy to transport, easy to carry, and easy to open at the same time. Henan liangjin tools co.,Ltd is located in Shangqiu City, Henan Province. The site area of the economic and Technological Development Zone covers an area of more than 30000 square meters, a construction area of more than 3000 square meters, a greening area accounting for more than 30% of the total area, and a design annual production capacity of 30 million rolls of paper, With 10 million screwdrivers, 6 million wrenches, 3 million art knives and 100000 sets of combined tools,specialize in the production of steel tape,tape screwdrivers,art knives,measuring tools,fine tape types of three meters,five meters,seven meters ,five meters,ten meters,as well as double-sided printing tape matte sanding,bright tape. Steel Tape,Metal Tape Measure,Retractable Tape Measure,Clothing Measuring Tape Henan Liangjin Tools Co.,Ltd , https://www.liangjintools.com