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The bag making process usually has several main functions, including material feeding, sealing, cutting and bag stacking.

In the feeding part, the flexible packaging film fed by the roller is uncoiled through a feeding roller. The feed roller is used to move the film in the machine to perform the required operation. Feeding is usually an intermittent operation, and other operations such as sealing and cutting are carried out during feeding stop. The dancing roller is used to maintain a constant tension on the film drum. In order to maintain tension and critical feeding accuracy, feeders and dancing rollers are necessary.

In the sealing part, the temperature controlled sealing element is moved to contact the film for a specific time to properly seal the material. The sealing temperature and sealing duration vary depending on the type of material and need to be constant at different machine speeds. The sealing element configuration and the associated machine format depend on the sealing type specified in the bag design. In most machine operation forms, the sealing process is accompanied by the cutting process, and both operations are carried out when the feeding is completed.

During cutting and bag stacking operations, operations such as sealing are usually carried out during the non feeding cycle of the machine. Similar to the sealing process, cutting and bag stacking operations also determine the best machine form. In addition to these basic functions, the implementation of additional operations such as zipper, perforated bag, handbag, anti-destructive seal, bag mouth, hat crown treatment may depend on the design of the packaging bag. Accessories connected to the base machine are responsible for performing such additional operations.

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Post time: Aug-10-2021