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Polyester Film The Nature Of The Decision To Use

May 26, 2017

Polyester film is a polymer plastic film, because of its comprehensive performance is more and more favored by the vast number of consumers. Because the production and technical level of our country still cannot meet the demand of the market, some still depend on import.

The properties of the polyester film determine its different uses. Different applications of polyester film on the requirements of raw materials and additives and processing technology have different requirements, its thickness and technical indicators are not the same; In addition, only bopet have a variety of uses, so according to the use of the film is boPET. Can be divided into the following categories:

1, electrical insulating film. Due to its good electrical, mechanical, heat and chemical inertia, good insulation performance, high breakdown voltage, specially used in electronic and electrical insulating materials, the standard thickness is: 25 μm, 36 μm, 40 μm, 48 μm, 50 μm, 70 μm, 75 μm, 80 μm, 100 μm and 125 μm (micron). These include a wire and cable insulating film (thickness of 25-75 μm) and a touch switch insulating film (50-75 μm).

2. Capacitance film. Polyester Film has many advantages such as high tensile strength, high dielectric constant, low loss factor, good thickness uniformity, good electrical property and large electric resistance, and is widely used in capacitor dielectric and insulating interlayer. Common standard thickness is 3.5 μm, 3.8 μm, 4 μm, 4.3 μm, 4.8 μm, 5 μm, 6 μm, 8 μm, 9 μm, 9.8 μm, 10 μm, 12 μm.

3, protect card film. With good transparency, high stiffness, heat stability, good surface smoothness of the performance, uniform longitudinal and horizontal tensile properties, and has waterproof, oil and chemical protection and other excellent performance. Dedicated to the protection of pictures, documents, documents and office supplies packaging, so that the film as a protective coating after the smooth and beautiful, can maintain the original clarity and deformation. Commonly used standard thickness 10.75 μm, 12 μm, 15 μm, 25 μm, 28 μm, 30 μm, 36 μm, 45 μm, 55 μm, 65 μm, 70 μm, of which 15 μm are mainly used as laser anti-counterfeiting film or high-grade card film.

4, the general film. With excellent strength and dimensional stability, cold resistance and chemical stability, are widely used in composite packaging, photographic film, metal evaporation, audio and video recordings and other substrates. There are several specific types of the following:

Shan semi-fortified membrane. The main feature is the longitudinal tensile strength, under the larger tensile force is not easy to break, mainly used in boxed items packaging seals. Common standard thickness is 20 μm, 28 μm, 30 μm, 36 μm, 50 μm.

Shan bronzing Film. The biggest characteristic is the tensile strength and the transparency is good, the thermal performance is stable, with certain resin's binding force is lower. It is mainly suitable for the use of small size change or as transfer carrier during high-temperature machining. The normal standard thickness is 9 μm, 12 μm, 15 μm, 19 μm, 25 μm, 36 μm.

Shan Printing Composite Packaging film. The main features are good transparency, excellent penetration resistance, excellent chemical resistance, temperature and moisture resistance. Apply to frozen food and food, medicine, industrial products and cosmetics packaging. Common standard thickness is 12 μm, 15 μm, 23 μm, 36 μm.

Shan aluminized Film. The main characteristics are high strength, mild resistance to chemical performance, good processing and anti-aging performance, appropriate corona treatment, so that the aluminum layer and film adhesion more firmly. Used for aluminum plating, can be widely used in tea, milk powder, candy, biscuits and other packaging, can also be used as decorative film such as bine crafts, Christmas trees; The conventional standard thickness has 12 μm, 16 μm, 25 μm, 36 μm.

Shan Magnetic recording film. It has the advantages of good dimensional stability, uniform thickness and high tensile strength. It is suitable for the base film and special packing film of magnetic recording material. Includes audio tape base (standard thickness of 9-12 μm) and black film (common standard thickness of 35-36 μm).