Hot plate welding of plastic injection moulded components.

Hot plate welding, also known as mirror, platen, or butt welding, is used for welding injection-moulded components, for example in automotive applications, and extensively in joining plastic pipes for gas and water distribution. This article deals only with welding injection-moulded components. A typical hot plate welding application as shown.

The process uses a heated, metal plate to heat and melt the interface surfaces of the thermoplastic components. Once the component interfaces are sufficiently heated, the hot plate is removed and the components are brought into contact to form the weld. An axial load is applied to the components during both the heating and joining phases of the welding process.

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