Method and apparatus for producing a laminated composite material having perforated inner layer
US4795513A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 27, 1986 |
| Grant date | Jan 3, 1989 |
| Priority date | — |
| Expiry date | Oct 27, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1374
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A device and method for forming a moving web of laminated composite material having weakened zones therein from a moving continuous web of relatively extensible plastic film material, having identical sets of graphics printed on nominally constant length repeat length portions thereof which are subject to length variation from a constant design repeat length distance, and a moving continuous web of relatively nonextensible paper material. A method and device for forming a three-layered composite material having weakened zones therein is also described. Carton blanks and liquid tight cartons having tear away tab portions formed from such three-layered composite material are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.