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What is thin-wall injection molding

Update:04-01-2020
Summary:

There is a technical process often used in the processi […]

There is a technical process often used in the processing of plastic products. (Thin-wall injection molding) This plastic processing technology is the preferred plastic processing technology for digital products and electronic products. Then the difficulty of this injection molding is very large. It also caused many plastic processing plants to encounter a lot of troubles. However, a lot of preparations must be done before processing and production, but for some professional and technical personnel, this is no problem.

There is a very critical parameter, that is, the wall thickness of the part. This is very critical in the entire injection molding process. Thin-walled injection-molded parts have many benefits. It can obviously reduce the weight and reduce the scale of production. Materials and expenses have also been greatly shortened, and it is particularly important that the molding cycle is also shortened.

So what is thin-wall injection molding? An injection molded part with a surface area of ​​50CM and a wall thickness of 1MM can be called a thin-wall injection molding process.

So why do we use thin-wall injection molding? The cost of plastic raw materials accounts for 50% to 80% of plastic products. If thin-wall injection molding is used, this ratio can be effectively reduced. Some electronic products such as mobile phones, digital cameras, and tablet computers have begun to use thin to attract Customers, so this thin-walled plastic processing is loved by the electronics industry.

The processing technology of thin-walled plastic products needs to be changed, requiring higher pressure and speed, shorter cooling time, and changing the ejection and gate arrangement of plastics.

When the thickness of thin-wall injection molding is reduced, the cooling material is also reduced. Because of the reduction in thickness, the entire molding cycle is also reduced by half. The reasonable setting of the hot runner and runner in the melt conveying device will not hinder the molding cycle and Reduced. The use of hot runners and runner bushings helps minimize molding cycles. In addition, the mold materials should also be considered. P20 steel is widely used in the molding of traditional products, but due to the higher pressure of thin-wall injection, the mold must be made very strong. H-13 and other hard steels add additional safety factors to thin-walled plastic molds.

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