Gud Mould Industry Limited

Compared with ordinary flow channel molds,  hot runner mould  have significant advantages such as saving time and materials, high efficiency, and stable quality. However, its wide application has been affected by their failure in use. With technological advancement of mold industry, hot runner mould has made great progress in flow channel melt temperature control, structural reliability, hot runner component design and manufacture, which makes hot runner technology regain people's attention and favor. First, residue at the gate is protruding or flowing, and surface appearance is poor. Main reason Gate structure selection is unreasonable, temperature control is improper, and there is a large residual pressure in the melt of flow channel after injection. Solution 1)  Improvement of gate structure . Usually length of gate is too long, which will leave a long gate material on the surface of plastic part. If...

What is weld line? Weld line, the most common of many defects in injection moulding products. Except for a few very simple injection molded parts, they occur on most injection molded parts (typically in the form of a line or V-groove), especially large complex items that require use of multi-gate molds and inserts. Weld line not only affects appearance quality of plastic parts, but also affects mechanical properties of plastic parts to varying degrees, such as impact strength, tensile strength, elongation at break, etc. In addition, welding marks also have a serious impact on the design of product and life of plastic parts, and therefore it should be avoided or improved as much as possible. Main reason for weld line is that molten plastic encounters in the cavity when insert, hole, flow rate is inconsistent, or area where filling flow is interrupted, confluence of multiple melts occurs; when gate injection is filled, materials...