Invention Grant
- Patent Title: Pattern laminated double wall plastic web from heat shrinkable and non-heat shrinkable films
- Patent Title (中): 图案层压双壁塑料网由热收缩和非热收缩膜
-
Application No.: US14077412Application Date: 2013-11-12
-
Publication No.: US09242431B2Publication Date: 2016-01-26
- Inventor: Tara K. Cruz , Tyler J. Theobald
- Applicant: Curwood, Inc.
- Applicant Address: US WI Neenah
- Assignee: Bemis Company, Inc.
- Current Assignee: Bemis Company, Inc.
- Current Assignee Address: US WI Neenah
- Agent Tom J. Hall
- Main IPC: B65D81/00
- IPC: B65D81/00 ; B65D85/00 ; B65D75/00 ; B32B7/14 ; A23L1/00

Abstract:
The present disclosure is concerned with forming and non-forming webs with improved puncture resistance suitable for use in semi-automatic horizontal form fill and seal (HFFS) packaging machines and a process for packaging hard food items with sharp angular surfaces using such webs in such machines. The webs have a double wall partially laminated structure. The structure is conveniently formed by adhesively laminating two component films in a face to face configuration using a pattern of adhesive which leaves a substantial portion of the two facing surfaces unlaminated. The lamination just needs to be sufficient that the two component films will hot form together when they are vacuum drawn into a die to form a cavity for packaging the food items. The webs comprise at least a first thermoplastic component film having substantial stored shrink forces and a second thermoplastic component film having no substantial stored shrink forces.
Public/Granted literature
- US20150132546A1 Pattern Laminated Double Wall Plastic Web From Heat Shrinkable and Non-Heat Shrinkable Films Public/Granted day:2015-05-14
Information query