PET film is also known as high temperature resistant polyester film. It has excellent physical properties, chemical properties and dimensional stability, transparency, recyclability, and can be widely used in magnetic recording, photosensitive materials, electronics, electrical insulation, industrial films, packaging decoration, screen protection, optical grade mirror surface protection, etc. High temperature resistant polyester film type : FBDW (single side matte black) FBSW (double side matte black) Specifications of high temperature resistant polyester film thickness width roll diameter core inner diameter 38μm~250μm 500~1080mm 300mm~650mm 76mm(3"), 152mm(6") Note: width specifications can be according to the actual demand. The conventional length of the film roll is 3000m or 6000 of 25μm.

　　Chinese name

　　High temperature resistant polyester film

　　Foreign Name

　　PET

　　Applications

　　With the development of special functional films, new applications for polyester films are emerging. It can be produced into protective films for cell phone LCDs, LCD TVs, cell phone keys, etc.

　　PET film is a kind of packaging film with relatively comprehensive performance. PET film has excellent mechanical properties, its toughness is the best of all thermoplastics, tensile strength and impact strength is much higher than the general film; and good stiffness, size stability, suitable for printing, paper bags and other secondary processing. Good chemical resistance and oil resistance. However, it is not resistant to strong alkali; it is easy to carry static electricity, and there is no proper method to prevent static electricity, so attention should be drawn to it when packaging powdery goods.

　　Future

　　With the dual promotion of market demand and industrial policy, China&39;s membrane technology industry will usher in a "golden decade" with considerable output value. The membrane market in China will account for 15%-20% of the total demand of the global membrane market.

　　As the competition in membrane industry is intensifying, the integration and capital operation among large membrane enterprises are becoming more and more frequent, and domestic excellent membrane manufacturers are paying more and more attention to the research on the industry market, especially the in-depth research on the changes of enterprise development environment and customer demand trends. Because of this, a large number of domestic outstanding membrane industry brands are rapidly emerging and gradually becoming the leading membrane industry!

　　Types

　　PET high-gloss glossy film

　　This film has excellent physical and mechanical properties of ordinary polyester film in addition to excellent optical properties, such as good transparency, low haze and high gloss. It is mainly used for high-grade vacuum aluminized products. The film has a mirror surface after aluminizing, which has a good packaging decoration effect; it can also be used for laser laser anti-counterfeiting base film, etc. High gloss BOPET film has large market capacity, high added value and obvious economic benefits.

　　PET Transfer Film

　　Transfer film is also called heat transfer film. This transfer film is characterized by high tensile strength, good thermal stability, low thermal shrinkage, flat and smooth surface, good peelability and can be used repeatedly. It is mainly used as a carrier for vacuum aluminizing, that is, after the PET film is aluminized in the vacuum aluminizing machine, it is coated with adhesive and laminated with paper, and then the PET film is peeled off, and the aluminum molecular layer is transferred to the surface of cardboard through the adhesive effect, forming the so-called aluminized cardboard. The production process of aluminized cardboard is

　　PET base film → release layer → color layer → aluminized layer → adhesive coated layer → transfer to cardboard.

　　Vacuum aluminized cardboard is a kind of metallic luster cardboard, which is a kind of advanced novel packaging material developed in recent years. This kind of aluminized cardboard has bright color, strong metallic sense and bright and elegant printing, which can replace the large area of printed materials with hot stamping and play a role in the beautification of goods. Because it adopts the method of vacuum aluminizing, the surface of the cardboard is only covered with a thin and tightly shiny aluminum layer of 0.25μm~0.3μm, which is only one fifth of the aluminum foil layer of the laminated aluminum cardboard, so it has both a noble and beautiful metallic texture and the environmental protection property of degradability and recyclability, and is a green packaging material.

　　PET reflective film

　　PET reflective film is characterized by excellent optical properties, flat and smooth surface, good thermal stability, small shrinkage rate and light aging resistance.

　　There are two kinds of reflective materials used in traffic facilities: lens type directional reflective film and flat top type reflective film, both of which use aluminized PET film as the reflective layer, on which a number of glass beads with a refractive index of 1.9 are adhered to the PET aluminized film after being coated with pressure-sensitive adhesive, and then sprayed with a surface protective layer of acetal.

　　PET reflective film is applied to billboards with reflective requirements, traffic reflective signs (reflective road signs, reflective barrier, reflective number plates), reflective police uniforms, industrial safety signs, etc.

　　Chemically Coated Film

　　In order to improve the surface properties of PET films to improve the adaptability of printing and the bonding force of vacuum aluminizing layer, corona treatment is usually used to improve the surface tension of films. However, the corona method has problems such as timeliness, especially in high temperature and high humidity environments, and the tension of the corona-treated film can easily decay. The chemical coating method, however, does not have such problems and is favored by the printing and aluminizing industries. Some domestic enterprises have developed PET chemical coating series products: such as coating with water-soluble polymers, which can improve the surface tension of PET film; coating with acrylate emulsions, which can improve the adaptability of printing (water-soluble ink can be used); coating with polyurethane aqueous solution, which can strengthen the bond between the aluminized layer and PET base film and increase the thickness of the aluminized layer.

　　In addition, the coating method can also be used to produce high barrier film and anti-static film, etc.

　　PET anti-static film

　　Today&39;s world has entered the information age, various frequencies and wavelengths of electromagnetic waves fill the whole earth space, these electromagnetic waves will produce different degrees of interference to unshielded sensitive electronic components, circuit boards, communication equipment, etc., causing data distortion and communication disorder. And electromagnetic induction and friction generated by static electricity on various sensitive components, instruments, certain chemical products, etc., such as the accumulation of electrostatic discharge due to packaging film, the consequences will be devastating, so the development of anti-static PET packaging film is also very important. The feature of antistatic film is that by adding some kind of antistatic agent to PET film, a very thin conductive layer is formed on the surface of the film and a continuous phase is formed to improve the surface conductivity so that the generated charge can be leaked as soon as possible. Generally, the surface specific resistance of antistatic film is required to be ≤10of 9~11 times of ohms.

　　PET Heat Seal Film

　　PET film is a crystalline polymer, after stretching and orientation, PET film will produce a large degree of crystallization, if it is heat sealed, it will produce shrinkage and deformation, so ordinary PET film does not have heat sealing performance. To a certain extent, the application of BOPET film is limited.

　　In order to solve the heat sealing problem, a three-layer co-extruded heat sealing PET film has been developed by modifying PET resin and adopting a three-layer A/B/C die structure. Heat-sealable PET films can be widely used in the fields of packaging and card protection films for various products.

　　PET Heat Shrink Film

　　Polyester heat shrink film is a new type of heat shrink packaging material. Because it is easy to recycle, non-toxic, tasteless, good mechanical properties, especially in line with environmental protection, polyester (PET) has become an ideal substitute for polyvinyl chloride (PVC) heat shrink film in developed countries.

　　However, ordinary polyester is a crystalline polymer, and ordinary PET film can only obtain a heat shrinkage rate of less than 30% after a special process. To obtain polyester films with higher heat shrinkage, they must also be modified. In other words, in order to prepare polyester films with high heat shrinkage, copolymerization modification of common polyester, i.e. polyethylene terephthalate, is required. The maximum heat shrinkage of copolymer-modified PET films can be up to 70% or more.

　　Characteristics of heat-shrinkable polyester film: It is stable at room temperature, shrinks when heated (above glass transition temperature), and is subject to more than 70% heat shrinkage in one direction.

　　Advantages.

　　① Transparent to fit the body and reflect the image of goods.

　　②Tightly bundled packaging, good anti-dispersion.

　　③Resistant to rain, moisture and mildew.

　　④No recovery, with certain anti-counterfeiting function.

　　Heat shrinkable polyester film is commonly used in convenience food, beverage market, electronic and electrical appliances, metal products, especially shrinkable labels are its most important application area. Because with the rapid development of PET beverage bottles, such as Coke, Sprite, various fruit juices and other beverage bottles need PET heat shrink film with it to do heat sealing labels, they belong to the same polyester class, is environmentally friendly materials, easy to recycle and reuse.

　　In addition to shrink labels, heat shrink polyester film has also been used in recent years for the outer packaging of daily commodities. Because it can protect the packaging items from impact, rain, moisture and rust, but also make the product with a beautifully printed outer packaging to win the user, while it can well show the good image of the manufacturer. At present, more and more packaging manufacturers are using printed shrink film to replace the traditional transparent film. Because printing shrink film can improve the appearance of the product grade, is conducive to product advertising, and can make a deep impression of the trademark brand in the hearts of consumers.