Tube skirt decorated with an attractive side seam
Patent Information
- Application Number
- DE602016095550
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2015-05-29
- Filing Date
- 2016-05-26
- Publication Date
- 2026-06-03
- Estimated Expiration
- 2036-05-26
AI Technical Summary
Existing methods for manufacturing tube skirts in flexible tubes result in aesthetically unpleasing and potentially weak welds due to visible weld beads and the risk of contamination from moisture, especially when decorative layers are involved, and require precise edge alignment which is difficult to achieve.
A multi-layered flat strip structure is used with a decorative film on a primary film, where the primary film includes ethylene vinyl alcohol (EVOH) stabilizing layers symmetrically arranged to protect decorative layers and maintain structural integrity, and a reversed heating process where the inner surface is heated at a higher temperature than the outer surface to form a lateral weld.
The method produces an aesthetically pleasing and robust weld that maintains the decorative appearance and barrier function, reducing moisture and fragrance loss while ensuring the weld's strength and visibility.