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NEWS
04
2012
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07
Plastic pipe market expansion is expected to introduce high-quality domestic raw materials
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Injection molding is a common way to use plastic materials. Precision injection molding, however, is the pursuit of creating high-precision injection molded products. Precision injection molding has two indicators: one is the accuracy of the equipment, and the other is the error of the mold Precision injection molding has the most refined injection molding related products.
The process of injection molding is the transformation of plastic from solid (powder or granule) to liquid (melt) and then to solid (product). From pellet to melt, and then from melt to product, the intermediate temperature field, stress field, flow field and density field, etc., under the joint action of these fields, different plastics have different polymer structure form and rheological properties.
In precision injection molding, the mold is one of the keys to obtain precision plastic products with quality requirements, and the mold for precision injection molding should effectively meet the requirements of product size, precision and shape. However, even if the accuracy and size of the mold are the same, the actual size of the molded plastic products may be different due to the difference in shrinkage. Therefore, it is very important to control the shrinkage rate of plastic products effectively in precision injection molding technology.
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