Molded rubber products refer to rubber products that are molded and vulcanized on the vulcanizing machine. They need accurate size, bright and clean surface and dense texture, such as sealing ring, sealing strip, rubber bearing, rubber bottle stopper and other rubber products. Molded rubber products are strict in size, and there are often problems such as lack of glue, bulge and sag. Then how is lack of glue caused by rubber products, and how to prevent lack of glue?

Lack of glue problem reasons and solutions

First, the amount of glue is too little.

1, increase the amount of glue;

2. Adjust the glue injection hole to ensure sufficient glue injection; (Glue injection hole refers to the glue inlet of the mold)

Reason two, the overflow mouth is too large, so that the glue can not fill the cavity, overflow from the overflow mouth or overflow mouth position is wrong

1, change the size of overflow mouth or reduce the number of overflow mouth;

2, reasonable choice of overflow mouth position;

Three, the amount of release agent is too much, so that the glue can not be closed at the junction in the cavity.

1, reduce the amount of release agent;

2, pay attention to the glue material can not be stained with oil before use;

Four, the vulcanization rate of the rubber is too fast, the rubber has been vulcanized before it is filled with the cavity, so that the fluidity of the rubber becomes poor, and the rubber can not be filled with the cavity.

1, adjust the glue formula, prolong the burning time;

2, increase the size of the inlet or increase the number of inlet;