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Vacuum Coating Equipment Vacuum Coating Materials Commonly Used in Vacuum Coating Machines

Vacuum Coating Equipment Vacuum Coating Materials Commonly Used in Vacuum Coating Machines


Vacuum Coating Equipment Vacuum Coating Materials Commonly Used in Vacuum Coating Machines

Vacuum coating machines are used in all walks of life, and the widespread use of plastics and the continuous development of vacuum coating technology are destined to extend their tentacles to the plastics industry. Faced with some commonly used plastics that cannot be directly vacuum coated, researchers use scientific Knowledge solves the problem. For the plastic materials used in vacuum coating machines, it is necessary to have high bonding with the film layer, small air release, and thermal stability. At the same time, there are very few plastic materials that meet these three conditions, but plastic materials are used in industrial production. The application is very extensive, so the application of plastic vacuum coating machine has also developed. In order to make more plastics into vacuum coating, it is often improved by various methods.

Now we will introduce several plastics commonly used in vacuum coating. ABS is the earliest used plastic that meets three conditions at the same time. A represents acrylonitrile, B represents butadiene, and S represents styrene. The plastic contains the above three substances. It is ABS plastic. After ABS is coated with a film, it can give full play to its mechanical properties and impact resistance. Relying on its high hardness, wear resistance and low cost, it is often used to replace some metal mechanical parts. It is also used in the production of housings for household appliances, but because it contains butadiene, ABS cannot be used outdoors, otherwise it will discolor.

PETP polyethylene terephthalate, or polyester for short, is another plastic that meets three conditions after ABS. The coated film has good tensile strength and high toughness. PS polystyrene can withstand temperatures below 100 °C, and has good adaptability to vacuum coating. It is colorless, odorless, acid and alkali resistant. It is a very good insulating material, but it is not widely used because it is easy to brittle. PC polycarbonate can also be vacuum coated, with good mechanical properties and impact resistance, but the price is relatively high, and if the control is not good during molding, it is easy to crack. After vacuum coating, PA polyamide can be oil-proof and moisture-proof, and has excellent shading and heat-insulating properties. It can be used as a material for producing high-end packaging products.

Due to the poor adaptability of vacuum coating, polyethylene can still be used for vacuum coating after transformation, but it can only produce low-grade packaging products or thermal insulation products. Polypropylene is more stable in heat than polyethylene, and it is very light, so its use value is It is relatively high, but the combination of polypropylene and the film layer is relatively poor, so the coating must be carried out after surface treatment, and the film layer is used as a decoration to make the product more beautiful.

Polyvinyl chloride is a substance that is not easy to corrode, but it is unstable when heated. The temperature it can withstand is only below 60 °C. In order to improve its heat resistance, stabilizers will be added to it. The vacuum coating machine should also choose low-temperature coating equipment. .

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