Tear tape adapted for complete sealing of package overwrap
US5806281A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 1996 |
| Grant date | Sep 15, 1998 |
| Priority date | — |
| Expiry date | May 31, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D75/66
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A packaged product includes an overwrap material wrapped around the product and overlapped to form a seam bonded to prevent ingress of moisture and a tear tape to tear the overwrap material. The tear tape has a first pressure sensitive layer for bonding to the overwrap and a second layer opposite the first having characteristics such that it acts as a release coat to inhibit bonding of the tear tape to itself and such that it acts to bond the substrate to the overwrap material. The second layer converts by heat from the release coat condition to the bonding condition by being absorbed into the first sub-layer or by including a hard rough surface arranged to inhibit bonding to the first layer which is melted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.