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PET Film Manufacturer

PET Film Manufacturer


Polyester film (PET) is a film material made from polyethylene terephthalate, which is extruded into thick sheets and then stretched. Polyester film Eco-friendly film PET film Opalescent film and other printing and packaging consumables, widely used in the glass and steel industry, building materials industry, printing industry, medicine and health. Polyester film is also called polyester film Optical film Polyester film Sensitive paper Polyester film Benzene tin film Cellophane Release film.

Wonder Plastic is a custom supplier of PET film and tubing. No matter what you’re looking for, we can accommodate nearly any specifications to deliver the plastic film or tubing that best suits your application.

What Is PET Films

Polyester film is a kind of polymer plastic film, which is increasingly favoured by the majority of consumers because of its excellent overall performance. As China’s production volume and technical level still cannot meet the market demand, part of it still needs to rely on imports. It is usually a colourless, transparent and glossy film (it can now be coloured by adding additive particles) with excellent mechanical properties, high rigidity, hardness and toughness, puncture resistance, friction resistance, high and low temperature resistance, good chemical resistance, oil resistance, air tightness and fragrance retention, and is one of the commonly used substrates for permeability compound films, but has poor corona resistance.

The Classification according to the material used in the production of polyester film
  • Biaxially oriented polyester film (referred to as BOPET), is the use of light material (also known as large light material, that is, in the raw material polyester slice titanium dioxide content of 0.1%, after drying, melting, extrusion, casting and longitudinal stretching of high-grade film, a wide range of uses). toughness; its tensile strength is PC film, nylon film 3 times, impact strength is BOPP film 3-5 times, has excellent abrasion resistance, folding resistance, pinhole resistance and tear resistance; heat shrinkage is very small, at 120 ℃, only 1.25% shrinkage after 15 minutes; has good antistatic properties, easy to vacuum aluminizing, can be coated with PVDC, so as to improve its heat sealing, barrier and Printing adhesion; BOPET also has good heat resistance, excellent resistance to cooking, low temperature freezing resistance, good oil resistance and chemical resistance, etc. BOPET film cannot be dissolved by most chemicals except for nitrobenzene, chloroform and benzyl alcohol. However, BOPET will be subject to the erosion of strong alkali, the use of attention should be paid to the BOPET film low water absorption rate, good water resistance, suitable for packaging high water content of food.
  • One-way stretch polyester film (referred to as CPET), is the use of semi-opaque material (raw material polyester slices with titanium dioxide), after drying, melting, extrusion, casting and longitudinal stretching of the film, the lowest grade and price in the polyester film, mainly used for pharmaceutical tablet packaging. Due to the use of less, manufacturers less large-scale production, about 5% of the field of polyester film, China’s enterprises are also less imported, the standard thickness of 150μm.
The Classification according to the use of polyester film

The properties of polyester films determine their different uses. Different uses of polyester films have different requirements for raw materials and additives as well as processing techniques, and their thickness and technical indicators are different; in addition, only BOPET has a variety of uses, so the films classified according to their uses are all BOPET. can be divided into the following categories.

Electrical Insulation Film

Because of its good electrical, mechanical, thermal and chemical inertness, good insulation performance, high breakdown voltage resistance, dedicated to electronic and electrical insulation materials, commonly used standard thicknesses are: 25μm, 36μm, 40μm, 48μm, 50μm, 70μm, 75μm, 80μm, 100μm and 125μm (micron). These include wire and cable insulation films (25-75μm thick) and touch switch insulation films (50-75μm).

Capacitive Film

With high tensile strength, high dielectric constant, low loss factor, good thickness uniformity, good electrical properties, high electrical resistance, etc., it has been widely used as capacitor dielectric and insulation compartment. Commonly used standard thickness of 3.5μm, 3.8μm, 4μm, 4.3μm, 4.8μm, 5μm, 6μm, 8μm, 9μm, 9.8μm, 10μm, 12μm.

Card Guard Film

It has good transparency, high stiffness, good thermal stability, flat surface, excellent winding performance, uniform longitudinal and transverse stretching performance, and has excellent properties such as waterproof, oil-proof and chemical-proof. It is specially designed for the protective packaging of pictures, documents, papers and office supplies, making them flat and beautiful after stamping as a protective film, keeping the original clear and undistorted. Commonly used standard thicknesses are 10.75μm, 12μm, 15μm, 25μm, 28μm, 30μm, 36μm, 45μm, 55μm, 65μm, 70μm, of which 15μm or more is mainly used as laser anti-counterfeiting base film or high-grade card protection film. Translated with www.DeepL.com/Translator (free version)

General Purpose Film

With excellent strength and dimensional stability, cold resistance and chemical stability, it is widely used in various substrates such as laminated packaging, photographic film, metal vapour plating, audio and video recording. Specifically, there are the following types.

  • Semi-Reinforced Films. The main feature is the longitudinal tensile strength, not easy to break under greater tension, mainly used for boxed items such as packaging seals. Commonly used standard thicknesses are 20μm, 28μm, 30μm, 36μm, 50μm.
  • Stamping Film. The most important features are good tensile strength and transparency, stable thermal properties and low bonding with certain resins. It is mainly suitable for applications where there is little dimensional change during high temperature processing or as a transfer carrier. Conventional standard thicknesses are 9μm, 12μm, 15μm, 19μm, 25μm and 36μm.
  • Printed Laminated Packaging Films. The main features are good transparency, good resistance to penetration, superior chemical resistance, temperature resistance and moisture resistance. It is suitable for frozen food and packaging of food, pharmaceuticals, industrial products and cosmetics. Commonly used standard thicknesses are 12μm, 15μm, 23μm and 36μm.
  • Aluminium-Plated Film. The main characteristics are high strength, good temperature and chemical resistance, good processing and anti-ageing properties, and proper corona treatment, which makes the adhesion of aluminium layer and film more solid. After being used for aluminizing, it can be widely used for packaging of tea, milk powder, candy, biscuits, etc. It can also be used as a decorative film such as string flower crafts and Christmas trees; it is also suitable for printing lamination or cardboard lamination. The conventional standard thicknesses are 12μm, 16μm, 25μm and 36μm.
  • Magnetic Recording Film. It has good dimensional stability, uniform thickness and high tensile strength. Suitable for magnetic recording material base film and special packaging film. Including audio and video tape base (common standard thicknesses are 9-12μm) and black film (common standard thicknesses are 35-36μm).

Nano PET Film

High transparency and gloss: the particle size of nanoparticles is between 1 and 100 nm, which is smaller than the wavelength of visible light and has less impact on the transparency of the film. High barrier performance and heat resistance: using nano materials with special properties and unique processing technology, the nano materials are uniformly dispersed in the PET matrix in nano size and oriented by stretching during the film production process, thus making the PET film present excellent barrier performance, the O, CO2 and H2O transmission rate decreases exponentially, and the heat resistance performance also increases significantly, which can expand the application area of PET. This extends the shelf life of the packaged goods and can also be used for hot filling or sterilisation applications.
Classification according to the quality of the polyester film

Different manufacturers can have different classification names according to the quality of polyester film, and manufacturers in China are generally divided into superior products, first-class products and qualified products, while foreign manufacturers are generally divided into A-grade products, B-grade products and C-grade products. In general, 97-98% of the products sold by manufacturers are A-grade products, while B-grade products account for only 2-3% and C-grade products are unqualified products that are not sold in circulation. The main reason is the high price of raw materials, the general manufacturers will be back to the furnace as raw materials, or will be sold to textile mills as staple fibres for textile raw materials. Foreign manufacturers sometimes also sell their quarterly or half-yearly stocks of film as B-grade products, a consistent practice of some manufacturers in Southeast Asian countries, with the aim of reducing stocks.

About Us

Chaozhou Wonder Plastic Inc is a professional company dedicated to the research and development, production and sales of industrial packaging plastic bags and food packaging plastic bags. Established in 2002, the company is located in the new area of Anbu Town, Chaozhou City, Guangdong Province, with superior geographical location and convenient transportation.

Wonder Plastic has a professional management elite team with a group of high quality talents in R&D, production, quality management and marketing. Since its inception, Wonder Plastic has become a reliable partner for new and old friends in the industry. The company's plastic bags are made of PP, PE, PO, OPP, PPE, CPE, PVC, POF and other materials. Our products are widely used in many fields such as hardware, plastic, toys, crafts, electronics, garments, ornaments, materials, chemicals, textiles, etc. We can design and produce all kinds of packaging bags according to customers' requirements.

The company's existing plant area of nearly 8000 square meters, the existing equipment: 15 sets of film blowing machine, 22 sets of bag cutting machine, offset printing machine 5 sets, eight-colour computer high-speed copper printing machine 1 set, high-frequency wave voltage machine 20 sets, punching machine 4 sets, these equipment can be made for you to produce a variety of industrial packaging plastic bags, a one-stop production to reduce production costs, exquisite printing is the icing on the cake for your products!

Quality is the basis of our factory, quality and reasonable price make us stand in the fierce competition today, the company to high-quality products to meet the promise, to quality in return for care. We warmly welcome your visit and guidance!

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