PET precoat film:
The PET pre-coated film, that is, the polyester film and the EVA hot melt adhesive form a composite film of lamination structure, which has superior composite properties and can be laminated without affecting the superior performance of the PET precoat film. Original name of polyester: Poly(p-butyl phthalate), the properties are as follows: 1) The mechanical strength is large, and its tensile strength is about 5 to 10 times that of polyethylene. Therefore, 12mic PET film has been widely used, 9mic pole Thin PET films are also used. In addition, polyester films have the advantages of high stiffness and high impact resistance. 2) good heat resistance, melting point 260 ° C, softening point 230 ~ 240 ° C, even if the biaxial stretching process, at high temperatures, its thermal shrinkage is still very small, with excellent dimensional stability, long at high temperatures Time heating does not affect its performance. 3) It has good oil resistance and chemical resistance, has good acid corrosion resistance, and is resistant to attack by organic solvents and oils, but is easily deteriorated when exposed to strong alkali. 4) Excellent gas barrier and good odor barrier. 5) The barrier property to water vapor is inferior to that of polyethylene and polypropylene. 6) High transparency, light transmittance above 90%, good gloss and good printing performance. 7) Prevent poor UV transmission.
BOPP precoat film:
The BOPP pre-coated film, that is, the polypropylene film and the EVA hot melt adhesive form a composite film of lamination structure, has unique properties, can improve the defects of the ordinary polypropylene film, and exerts the superior performance of the polypropylene film. 1. Polypropylene is produced by polymerizing from exhaust gas after high temperature cracking of petroleum under the action of a catalyst. 2. Properties of polypropylene film: Advantages: 1) Light weight and density of 0.91g/cm2, it is one of the lightest plastic films and can float on the water surface. 2) The heat resistance is good, which is an excellent property that thermoplastics do not have. 3) Good chemical stability, acid and alkali resistance, moisture barrier and waterproof barrier properties. 4) Non-toxic, odorless, tasteless, like polyethylene, is recognized as the best material for food packaging in the world. 5) High transparency, good gloss, especially suitable for internal printing, good printing adaptability Disadvantages: 1) Poor oxygen barrier, easy to age under sunlight. 2) The low temperature resistance is poor, and the texture is brittle at low temperatures. 3) When used for printing, it is necessary to obtain a good effect by surface corona treatment (surface tension of 38 mN/m or more). 4) High static electricity. If there is no static elimination device, antistatic agent needs to be added during production.
The above is the difference between PET pre-coated film and BOPP pre-coated film. I hope everyone will continue to pay attention to Jiuzhi Plastics.
Jiuzhi Plastics Network
Lathe And Milling Processing Parts
Lathe and milling processing parts refer to precision metal parts that are manufactured using lathe and milling machines. These machines use computer numerical control (CNC) to produce parts to exacting specifications with high accuracy and precision.
Lathe machines are used to produce parts that have a cylindrical shape, while milling machines are used to produce parts with complex shapes and irregular surfaces. The combination of these two machining processes allows for the creation of parts with different shapes, sizes, and complexities.
Lathe and milling processing parts are used in a wide range of industries, including aerospace, automotive, electronics, and medical. These parts are typically produced from a variety of metals, including steel, aluminum, brass, and copper.
The advantages of lathe and milling processing parts are their high accuracy and precision. The CNC machines used in their production are programmed to make precise cuts and movements, resulting in parts that are consistent and accurate. This is especially beneficial in industries where quality control is essential for safety and reliability.
Another benefit of lathe and milling processing parts is their versatility. The combination of the two machining processes allows for the creation of a wide range of parts with complex shapes and irregular surfaces. These parts can also be produced in large quantities, allowing for efficient mass production.
Lathe and milling processing parts provide a cost-effective solution for many manufacturing needs. The precision of these machines means that parts can be manufactured to exact specifications, minimizing the need for additional processing or finishing. This can result in significant cost savings for manufacturers and ultimately lower prices for consumers.
In conclusion, lathe and milling processing parts are essential components in the manufacturing industry. These precision parts provide accuracy, versatility, and cost-effectiveness for a wide range of applications. With the ability to produce parts with high accuracy and precision, lathe and milling processing parts offer a powerful solution for many manufacturing needs.
Turning And Milling Operations,Lathe And Milling Machining Parts,Custom Lathe And Milling Parts,Pricision Lathe And Milling Parts
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