博文

目前显示的是 九月, 2019的博文

How to deal with the problem of fusion line?

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Reason analysis: From the perspective of plastics, the melting line is essentially caused by the incomplete melting of two plastic flow fronts.

Solution: To eliminate or reduce the melting line, plastics must have low viscosity, high temperature, sufficient pressure and enough time to melt completely. Usually, in the case of good exhaust, accelerating the filling and feeding speed and increasing the pressure as soon as possible after the combination of two plastic flow fronts will help to solve the melting line problem.


How to solve the problem of surface depression?

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Basic Reasons: From the perspective of plastics, when the plastics are cooled and contracted, insufficient feeding will lead to dents on the external surface or holes in the interior of the products.

Depression occurs in different locations, and the causes and solutions of the defects are also different.

1. When the depression occurs at the final cooling position of the thick-walled product or at a distance from the gate:
Cause analysis: Typical surface depressions or voids at the thick wall and far away from the gate are usually due to the increase of effective viscosity and pressure loss, resulting in insufficient cavity pressure, resulting in insufficient feeding pressure.
Solution: Increase the pressure of feeding and speed up the feeding rate

2. Surface depressions or cavitations occur near the gate
Cause analysis: Depression occurs near gate, usually due to lack of gate freezing.
There are several reasons affecting gate freezing: it may be caused by the decrease of effective vis…

Energetic Industry - precision machining provider

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ENERGETIC Industry, a professional plastic fabrication company and One-stop Semi-finished Plastics & Metals, Plastic Extrusion Profiles manufacturer:
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