Shrink film labeling with polyurethane hot melts
US5252155A · kind A · utility
18Cited by
21References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1992 |
| Grant date | Oct 12, 1993 |
| Priority date | — |
| Expiry date | Mar 10, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2666/26
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for applying heat shrink film to containers comprising the steps of a) coating at least a portion of a heat shrinkable but unshrunken film segment with a reactive hot melt polyurethane adhesive having a free isocyante content greater than 2% and a viscosity less than 3000 cps at 225.degree. F.; b) applying the film to the longitudinal surface of the container; and, c) subjecting the container to heat to shrink the film onto the container so as to permanently affix it thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.