Layered heat-shrinkable films and labels for bottles
US6524669B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2001 |
| Grant date | Feb 25, 2003 |
| Priority date | — |
| Expiry date | Aug 30, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31909
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Layered heat-shrinkable films disclosed herein are suitable for labels on PET bottles requiring label fitting and heat shrinkage at a high speed, which film has at least three layers, that is, both outer layers and an intermediate layer, wherein the heat shrinkability in the main shrinkage direction of the film is 20% or higher after treatment in hot water at 70° C. for 5 seconds and 35% to 55% after treatment in hot water at 75° C. for 5 seconds and 50% to 60% after treatment in hot water at 80° C. for 5 seconds, and the compressive strength of a label formed from the film meets the following formula (1): Y>X2.2 where Y is compressive strength (mN) and X is film thickness (&mgr;m).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.