Simple analysis of brittle sealing and brittle fracture in bag making process

The main reasons for brittle sealing and brittle fracture in bag making process are as follows:
1. The heat sealing temperature is too high.
2. Too much pressure.
3. The heat sealing time is too long.
4. The edge of the upper sealer is too sharp or the PTFE coated is damaged.
5. The silicone rubber at the bottom seal is too hard.
6. During the compounding and curing process of the Bag Making Machine, part of the adhesive penetrates into the film. Because of the penetration of adhesive, the toughness (impact resistance) of the substrate decreases and the brittleness increases.
7. After cooling and placing, the heat sealing strength of the plastic composite packaging bag increases, and at the same time, it tends to become brittle.
For the occurrence of this kind of situation, Zhengding machinery also collected and summarized the relevant solutions for your reference. Let's learn about it
Solutions:
1. According to the heat sealing characteristics of the inner seal material, select the appropriate processing temperature, pressure and heat sealing time of the Bag making machine.
2. Improve the surface state of the upper heat sealing knife to make the surface of the sealer smooth.
3. It should be well covered with Teflon cloth.
4. Choose suitable hardness of silicone rubber pad.