7 big problems and solutions common to self-adhesive [Kang Libang]

7 big problems and solutions common to self-adhesive [Kang Libang]

Self-adhesive is an abbreviation for self-adhesive liquid silicone glue that is selective for the substrate. There are 7 major problems such as air bubbles, impurities, product pitting, partial lack of glue, color difference, easy tearing, and composite non-bonding. Freely summarize some self-bonding solutions for everyone today.

1、Q：How to do self-adhesive bubble?

A：The white point of the self-adhesive product can increase the number of exhausts and reasonably control the temperature and curing time. According to different product recommendations, see the manufacturer to provide relevant instructions.

2、Q：How to do self-adhesive impuritirs?

A: Common impurities, such as particles, black spots of dirt and so on. The colloid can be filtered with a relatively fine filter, the channel of the feeding system can be thoroughly cleaned, and the surface of the mold can be stained, etc.

3、Q:How to do when PC / glass self-adehesive have product pitting?

A: After the self-adhesive is cured, the surface is uneven, often because the temperature is too high or too low, the injection pressure is not uniform, or the pressure is insufficient. It is recommended to debug the appropriate parameters first during the proofing process.

4、Q: Finished partial lack of glue

A: The self-adhesive lack of glue, the injection pressure is too small, the self-adhesive is insufficient, the surface of the mold is damaged, etc.; the former two appear at the distal end of the injection port, and the latter mostly appear at the fixed position. Can be resolved according to the actual situation.

5、Q: Self-adhesive have color difference.

A: Self-adhesive is transparent. In order to ensure product diversity, color paste is often added. These problems are mostly uneven mixing of rubber compound, improvement scheme, prolonging mixing time or increasing stirring rate.

6、Q: Self-adhesive products is easy tearing.

A: The self-adhesive product becomes brittle due to excessive vulcanizing agent, high vulcanization temperature and long vulcanization time. Solution: It can be adjusted according to the size of its own product.

7、Q : Self-adhesive composites do not bond

A：Self-adhesives do not bond, mainly due to substrate-related differences and cleanliness. It is recommended to clean the surface of the substrate before applying glue. Glass self-adhesive KL-2680 has different bonding performance to ordinary glass and high boron glass, and can be tested for free proofing; PC self-adhesive KL-6340 is compatible with PCS plastic 1414T, 121 blue, 145, Bayer 2805/2405 and so on. test.

Conley welcomes more self-adhesive technology