How to deal with part of air bubbles in the side seal of bag making machine

1.The composite strength and heat resistance of the composite film were improved by aging the adhesive through thermal insulation. Zhi

2. According to the composition structure Dao and heat sealing state of the composite film, the best heat sealing conditions or improved heat sealing methods are selected, and cooling is carried out immediately after heat sealing.

3. Check the storage life and storage conditions of the heat seal film. Pay special attention to the film of old batch number and the film after heat sealing treatment.

4. Increase the thickness of heating seal film.

5. Change the type and grade of the heat sealing film, and use the inner sealing film with anti pollution heat sealing property.

6 check whether the grade of adhesive meets the requirements.

The mLLDPE film was used to improve the heat sealing performance of the heat sealing layer and control the content of the lubricant.

8. Control the content of MDI monomer in the composite adhesive.

9 check the treatment degree of the heat cover.