一种斜拉链封袋的制备工艺及斜口拉链八边封袋
By using a heat-sealing technology that combines a stiffening composite film and a heat-insulating plate in the preparation of the sealing bag, along with tracking color blocks and positioning equipment, the problems of inconvenient opening and easy leakage in traditional sealing bag designs have been solved, achieving a stable oblique zipper structure and efficient sealing effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HANGZHOU SECIA PACKAGING PRINTING IND CO LTD
- Filing Date
- 2026-05-23
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional top-flat sealing or flat zipper sealing designs have problems such as inconvenience in opening and easy leakage during use. Furthermore, when installed at an angle, the zipper track may not be parallel to the edge of the packaging opening, resulting in localized poor sealing, zipper jamming, or appearance defects.
A first and second stiffening composite film are used in conjunction with a heat insulation board for heat sealing. The cutting point is precisely located using tracking color blocks to prepare a slanted zipper bag, ensuring that the zipper does not deform. Precise positioning and heat sealing are achieved through positioning components and external identification equipment, forming a stable slanted zipper structure.
It improves the structural stability and sealing reliability of the slanted zipper bag, enhances the ease of opening and pouring, increases the yield and product quality, and conforms to ergonomics.
Smart Images
Figure CN122401995A_ABST