Rongcheng Wujia Plastic Co.,Ltd
Tel:+8615098125996
peter@wujiapack.com
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Rongcheng Wujia Plastic Co.,Ltd

Office Address: 81 Huize St, Heyang East Road, Rongcheng, Shandong, China

Factory Address: 81 Huize St, Heyang East Road, Rongcheng, Shandong, China

Contacts: PETER WU

Phone: 86-15098125996

Fax: 86-0631-7584439

E-mail: peter@wujiapack.com

Zip code: 264300

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What Are The Problems In The Production Of Zipper Bags?

Rongcheng Wujia Plastic Co.,Ltd | Updated: Jun 21, 2017

  What are the problems in the production of zipper bags?

  In the processing of zipper bags often encounter the following four types of problems:

  1, zipper and bag body sealed parts are not flat;

  2, zipper and bag body parts of the phenomenon of partial delamination;

  3, the two ends of the zipper and the side of the bag and the intersection of the site of the "dead fold";

  4, the two ends of the zipper and the side of the bag and the edge of the intersection of local delamination phenomenon.

  The reasons for the above four types of problems are:

  1, the thermal shrinkage of the zipper itself is greater than the heat shrinkage of the composite film;

  2, the melting point of the zipper itself is greater than or equal to the melting point of the heat seal film;

  3, zipper on the child buckle cross section is too large;

  4, zipper bag bag machine on the local heat sealing bar design is unreasonable, it is recommended to use ultrasonic heat sealing device;

  5, local heat sealing head design unreasonable (too small);

  6, ultrasonic heat sealing device output power shortage or lack of pressure;

  7, ink layer heat resistance is insufficient;

  8, the hardness of silicone rubber pad is not appropriate.


Rongcheng Wujia Plastic Co.,Ltd