Plastic bags are used in many places in our daily life. As the name implies, plastic bags are produced by plastic bag making machine. What is the process of bag making in the end? Would you like to know? The following Xiaobian will share with you the main functions, including material feeding, sealing, cutting and code bag.

In the feeding part, the flexible packaging film fed by the roller is unrolled by a feeding roller. The feed roller is used to move the film inside the machine to perform the desired operation. Feeding is usually done in batches, with other operations such as sealing, cutting, etc., taking place during feeding stops. Dance rollers are used to maintain a constant tension on the film reel. To maintain tension and critical feeding accuracy, a feeder and dancing roller are required.

In the sealing section, the temperature controlled sealing element is moved to contact the film for a specified length of time to properly seal the material. Sealing temperature and sealing duration vary according to material type and need to be kept constant at different machine speeds. The seal element configuration and associated machine format depends on the seal type specified by the bag design. In most machine operations, the sealing process is accompanied by the cutting process, and both operations are performed when the feed is complete.

During cutting and bagging operations, operations such as sealing are usually performed during the non-feed cycle of the machine. Similar to the sealing process, the cutting and bagging operation also determine the optimal machine form. In addition to these basic functions, the execution of additional operations such as zippers, perforated bags, totes, destruct-proof seals, pouches, cap and crown handling, etc., may depend on the design of the bag. Attachments attached to the underlying machine are responsible for performing such additional operations.

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