Discount Optical injection mold Manufacturers china
Release time:
2023-03-02 11:43
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Discount Optical injection mold Manufacturers china tells you that the expansion-compression molding realized by the clamping unit is more suitable for the production of parts whose wall thickness remains constant at the cross section. Discount Optical injection mold Manufacturers china tells you that the advantage of this processing method is that it does not introduce stress into the produced parts after filling molding. Because the pressure is not applied by the screw during the injection molding process, but by clamping the mold. The pressure in the mold cavity is thus uniform and the plastic melt can be cooled almost without stress, resulting in a part with a uniform microstructure.
Discount Optical injection mold Manufacturers chin tells you that like the standard injection molding method, the plastic melt filling process of this method is also completed in a closed mold. During the expansion phase, the mold, possibly with gradually reduced clamping force, is opened by the screw into a defined and precisely repeatable position. The achievable accuracy of this position control is a key factor in being able to produce parts with reproducible wall thickness. The compression process moves the compression core of the mold into the compressed position.
Discount Optical injection mold Manufacturers china tells you that when this position is reached (measured directly on the mould), the compression process starts and the filling process stops immediately. The compression and packing phases consist of a multi-stage clamping force/compression force distribution. Both expansion-compression molding and injection-compression molding change the compression ratio by compressing the core of the mold rather than the clamping unit of the machine. However, this only makes sense if the part needs to be partially compressed.
Through the above introduction and analysis of Discount Optical injection mold Manufacturers china, hope it helps you.
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