Rongcheng Wujia Plastic Co.,Ltd
Tel:+8615098125996
peter@wujiapack.com
Home > News > Content
Product Categories
Contact Us

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

News

Ziplock Bag Heat Sealing Position Is Not How To Do?

Rongcheng Wujia Plastic Co.,Ltd | Updated: Jun 08, 2017

  Ziplock Bag heat sealing position is not how to do?

  common problem

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

  2, zipper and bag closed parts of the local delamination phenomenon;

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

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

  Solution

  After comparing the existence of many types of bad pods, the above problems are related to the following:

  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 sealing film;

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

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

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

  6, ultrasonic heat sealing device output power or insufficient pressure;

  7, ink layer heat resistance is insufficient;

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


Rongcheng Wujia Plastic Co.,Ltd