Method for eliminating melting knots of plastic products

one. Causes of weld artifacts in plastic products:

1 As the melting of the first part of the molten material solidifies in the confluence, it does not cause stripe-like weld marks.

2 because of the air and material volatiles are closed

Residual release agent in the 3 cavity.

two. Associated knowledge:

1 The use of a gate, products that do not merge material from two directions are generally not fused. In addition to this, if you want to avoid melting, you can only change the position of the gate to make the weld marks appear inconspicuous or look like Pleasant position.

2 The pins on the mold (holes in the product) will generally be fused.

3 Because there are so many phenomena that the air is sealed and melted, it is necessary to completely escape the air.

4 It is also useful for this method: The place where the fused mark occurs is generated on the excess sheet of the product, and then the sheet is cut.

5 Excessive release agent causes the leading part of the molten material to float up into the cavity, and weld scars will certainly occur.

three. Solution:

1 Instant: Increase the injection speed, increase the temperature of the mold, increase the temperature of the barrel, and increase the injection pressure.

2 Short-term: Increase gas escape slots.

3 Long-term: Change the position of the gate.