1. Increasing the glue inlet point or improving the glue inlet mode, especially the horn glue inlet, is the most irreplaceable glue inlet mode. S-shaped runner is used to increase the cold material well, which is convenient for the cold material to enter the gate to discharge the cold material and exhaust the air. The glue feeding mode is preferably fan-shaped glue feeding.

2. Increase the temperature of the feed pipe, so as not to affect the product quality and cause plastic decomposition. In general, 280 -320 degrees Celsius is basic.

3. Under the condition of not affecting the product shrinkage, try to increase the mold temperature to 100℃- 120℃ to facilitate the rapid injection of plastic into the mold cavity during injection molding.