What is back side seal pouch? | Care Pack

     Back side sealed bag, also known as middle-sealed bag, is a special vocabulary in the packaging industry. 

    Simply put, it is a packaging bag that is edge-sealed on the back of the bag. The application range of back side sealed bag is very wide. etc. are in this form of packaging.

    Compared with other packaging forms, the back-sealed bag has no edge sealing on both sides of the bag body, so it ensures that the pattern on the front of the package is complete and more beautiful. At the same time, in the typesetting design, the bag pattern can be designed as a whole, which can not only maintain the continuity of the picture, but also help the pattern printing. 

    Because the seal is on the back, there is more pressure on the sides of the bag body, reducing the chance of package breakage. Moreover, the packaging bags of the same size are sealed in the form of back seal with the smallest total length, which also reduces the probability of seal cracking in a certain sense.

    In terms of material: there is no difference between the back side sealed bag and the general heat-sealed bag. In addition, composite packaging such as aluminum-plastic, aluminum-paper, etc. are also widely used in modified packaging forms. The most common ones are bagged milk packaging and large bags of melon seeds.

    From the point of view of the manufacturing process: the difficulty in the manufacture and packaging of the back-sealed bag lies in the heat-sealing T-shaped mouth. The heat-sealing temperature of the "T"-shaped mouth is difficult to control. If the temperature is too high, other parts will wrinkle due to the high temperature; The temperature is too low, and the "T"-shaped mouth cannot be well heat-sealed.

    The back seal bags produced by Shenzhen Care Pack Co., Ltd. are mainly used for food, cosmetics, electronics, household gifts, etc.

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