【Case Study of Partnered Bag Production】Successfully solved customer issues with 【Seal Reinforcement】! - Addressed the weaknesses of laminated processing by enhancing the sides with seal reinforcement -

The lamination process involves bonding OPP film and CPP film together. It is common to use OPP film on the outside for its good ink adhesion and high moisture resistance, and CPP film on the inside for its excellent heat sealability and abrasion resistance.
This time, the customer requested OPCP laminated bags. However, we heard that when they had bags made previously, the seal strength was weak, and the sides of the bag's opening were very prone to tearing.
The reason for this is that during the lamination process, the tension applied by the machine when bonding the films and the way the adhesive adheres can create slight differences in adhesion at different locations. This can lead to the edges opening when the film is placed on the bag-making machine, resulting in issues with proper sealing of the sides.
To resolve this issue, we utilized a "reinforcement seal." When applying the reinforcement seal, we took care to ensure that:
- The temperature was not too high to avoid deforming the bag.
- The marks left by the reinforcement on the bag were minimized.
To address these two points, we made sure to manage the temperature during the process. The problem was successfully resolved, and the customer was satisfied!

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