Any product has its own defects, rubber products, is no exception, are mainly in the lack of rubber products; A thick rubber edge, products are overweight; Edge, shrinkage while; Crack; Air bubbles. Out of the mold apart; Products are too rough.
So, what are causes of these rubber products defects and solutions. Below writer Instructions just one by one.
1.Rubber products lack of glue
The reason mainly has: Semi-finished products consumption insufficient or glue is enough; Tablet rise too fast, flow; there is no good The mold can not seal rubber; Poor mold exhaust conditions; Mold temperature is too high.
Can be solved from these aspects: The new pack glue was determined; Slow down the tablet is rising faster and repeatedly deflated; Improve mold design; Reduce the mould temperature, speed up the operation; Reduce the die temperature.
2.Too thick rubber adhesive side, the products are overweight
The reason mainly has: Large amount of glue; Insufficient pressure plate; Die no more than the corresponding glue tank.
Can be solved from these aspects: Strict control of semi-finished products consumption; Increasing the tablet pressure; Improve the mold design.
3.Rubber Edge, shrinkage while
The reason mainly has: Rubber processing performance is poor.
Can be solved from these aspects: The casting pressure, injection production to reduce the Mooney viscosity of rubber.
4.Crack in rubber products
The reason mainly has: Rubber dirt; Isolation agent too much; Coke burning rubber.
Can be solved from these aspects: Guarantee clean semi-finished products; The rational use of lubricating agent; Extend the scorch time.
5.Rubber air bubbles
The reason mainly has: Compound containing sulfide decomposition of the material processing technology of the gas WoQi, not exhaust the air in the cavity; Die no vent line.
Can be solved from these aspects: Repeatedly before clamping deflated, mold exhaust extra line; Cao are formulated.
6.Rubber mold tear
Reason mainly has: The isolation agent too little or too much; Rev. Die too fast, stress is not uniform; Rubber illiquid, semi-finished adhesion is poor; Mould, chamfer edges Richard.
Can be solved from these aspects: The rational use of lubricating agent, and the mold products uniform stress, reduce the rubber door viscosity, improve the mold design.
7.Rubber products is too rough
The reason mainly has: Mold surface roughness; Mixing rubber scorch time is too short.
Can be solved from these aspects: Cleaning the mold; Extend the scorch time.
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