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              The use of five plastic films

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              The use of five plastic films

              Release date:2017-07-24 The author: Click on:

              Plastic films are made of polyvinyl chloride, polyethylene, polypropylene, polystyrene, and other resins for packaging, as well as for laminating. Here's an analysis of the use of seven plastic films:

              PVA coating high barrier plastic film use

              Polyvinyl alcohol high barrier composite film is made of polyvinyl plastic as the base material, and the modified polyvinyl alcohol water soluble liquid coating is formed on the base material with extremely high barrier film. Because pva high barrier composite film has good barrier properties, and conform to the requirements of environmental protection, so this kind of packaging materials market prospect is very bright, in the food industry has a broad market space.

              Bidirectional stretch polypropylene film (BOPP) application

              Bidirectional stretch polypropylene film is a transparent soft packaging material developed in the 1960s. It is a special product line that mixes polypropylene raw materials with functional additives, melts and mixes, makes sheets, and then stretches into thin films. BOPP film not only has the advantages of low density, good corrosion resistance and good heat resistance of PP resin, but also has good optical properties, high mechanical strength and abundant raw materials.

              In addition, it can be applied in the preparation of high value-added functional products such as electrofilm and microporous membrane, so the development prospect of BOPP film is very promising. By 2004, the production capacity of BOPP film production line in China was 1.9 million tons, and the actual production volume was about 1.76 million tons.

              Low density polyethylene film (LDPE) use

              Low density polyethylene is a synthetic resin obtained from the polymerization of ethylene free radicals under high pressure. Therefore, it is also known as "high pressure polyethylene". LPDE is a branched chain with long and different lengths on the main chain, with about 15 ~ 30 ethyl, butyl, or longer branched chains for every 1000 carbon atoms in the main chain. Due to the length of the molecular chain contains more branched chain, so products of low density, flexible, good low temperature resistance, impact resistance, good chemical stability, general acid (except strong oxidizing acid), alkali, salt corrosion effect, has a good electrical insulating performance.

              The applications of low density polyethylene films are also widely available, such as packaging. There are various kinds of polyethylene packing films, and their performance is different. Single film performance is single, and the compound film is complementary to each other, which is the main material for food packaging. Secondly, polyethylene film is also used in civil engineering, such as geomembrane. It is waterproof in civil engineering and has extremely low permeability. Agricultural application is the agricultural film, can be divided into the canopy film, the film, the bitter cover film, the green reservoir film and so on.

              Use of PET

              Polyester film (PET), commonly known as polyethylene terephthalate, is a thermoplastic engineering plastics. Using extruded method to form thick film, and then bidirectional stretching into thin film material. Polyester film is characterized by excellent mechanical properties, rigidity, high hardness and toughness, durability, resistance to friction, high and low temperature resistance, chemical resistance, oil resistance, good air tightness and sweet, is one of the commonly used resistance permeability composite film substrate, but not in the corona resistance. The price of polyester film is higher, the thickness is 0.12 mm generally, the outer material that is commonly used to make the packaging of food packaging, the printing sex is better. Due to the complexity and difficulty of polyester film, it is difficult to supervise the customs.

              Use of nylon plastic film

              The chemical name of nylon is polyamide (PA), and there are many varieties of nylon, which are used in production of thin film, including nylon 6, nylon 12, nylon 66 etc. Nylon film is a kind of very tough film, good transparency, and has good gloss, high tensile strength, tensile strength, but also has good heat resistance, cold resistance, oil resistance and organic solvent resistance, abrasion resistance, durable sex good, and is soft, good resistance of oxygen resistance, but for poor water vapor barrier property, moisture absorption and moisture permeability is bigger, poor heat sealing property, suitable for packing hard objects, such as sex fat food, meat, Fried food, vacuum packing food, cooking food, etc.


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              Kunshan Shengye Packing Material Co., Ltd

              Contact person: Mr. Li

              Telephone: 18616678980

              Export manager: 18962691776

              Sales manager:18068053703

              Web: www.ksypack.cn


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