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5. Lack of glue in rubber products Reason analysis: 1. The rubber material does not flow sufficiently; 2. The unit consumption of semi-finished products is insufficient or the amount of glue loaded is insufficient; 3.3. Poor mold exhaust performance; mold temperature is too high Solution: 1. Slow down the rising speed of the mold and repeatedly deflate; 2. Re-establish the amount of glue in the mold; 3.3. Improve mold design and reduce mold temperature. 6. Rolling, drawing and shrinking of rubber products Reason analysis: 1 The air between the mold and the rubber cannot be discharged. 2 The weighing is not enough. 3 Insufficient pressure. 4 The fluidity of the rubber compound is too poor. 5. The mold temperature is too high, and the rubber material is scorched. 6.6 Early scorch of the compound (dead material). 7. The material is not thick enough and the flow is not sufficient. Solution: 1. Add a vent slot. 2. Multi-exhaust. 3. Raise stress 4. Modify the formula to increase the fluidity of the rubber compound. 5. Modify the formula to prolong the scorch time 6. Increase the thickness of the material. 7. Cracks appear in rubber products Analysis of the reasons: Dirt is mixed in the rubber compound; too much release agent is added; the rubber compound is not scorched enough. Solution: Ensure that the rubber compound is clean and pollution-free; use the release agent reasonably; prolong the scorch time. 8. Rubber products are frosted and whitish Reason analysis: 1. Insufficient vulcanization. 2. Excessive compounding agent exceeds the solubility of rubber. Solution: 1. Extend sulfur or take secondary vulcanization 2. Adjust formula to reduce low solubility 9. Rubber product demoulding and cracking Reasons: 1. The mold temperature is too high or the sulfur time is too long. 2. Too much vulcanizing agent. 3. The demoulding method is incorrect. Solutions: 1. Reduce the mold temperature. 2. Shorten the sulfur time. 3. Reduce the amount of vulcanizing agent. 4. Spray release agent. 5. Take the correct demoulding method. 10. Rubber products are difficult to process Reason analysis: 1. The tear strength of the product is too good (such as high tensile glue). This difficult processing is manifested in that the burrs cannot be torn off. 2. The strength of the product is too poor, which means that the burrs are very brittle and will tear together with the product. Remedy: 1. If it cannot be torn off, the formula must be adjusted, and the compounding agent should be filled more to reduce the shrinkage rate. 2. If it is torn, reduce the mold temperature, when shortening the sulfur, reduce the amount of vulcanizing agent, adjust the formula, and increase the strength of the rubber compound