Self sealing containers
US6691913B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Oct 15, 2001 |
| Grant date | Feb 17, 2004 |
| Priority date | — |
| Expiry date | Nov 11, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J5/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Readily sealable containers which do not require the moistening of dry adhesive layers or the use of removable release liners to protect pressure sensitive adhesive layers. Although the containers may have many applications and uses, they have particular advantages for shipping and mailing purposes. Thus, envelopes and shipping boxes are notable embodiment examples. In general terms, two facing sections of the container have layers of an adhesive substance and a release substance, arranged in such a manner that when the two facing sections are in contact with one another, the adhesive substance layers face the release substance, preventing a permanent sealing of the container, and then, the positioning of another section of the container, free of any adhesive or release substance between the two facing sections, which causes the sealing of the container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.