Method of making an elongate strip for the production of sealing members for containers
US5261990A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 1990 |
| Grant date | Nov 16, 1993 |
| Priority date | — |
| Expiry date | May 30, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1724
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method of making an elongate strip for the production of a sealing member includes, as a first step, applying a plurality of strips of a first adhesive to one of a membrane and a first sheet, the membrane and the first sheet are then bonded together so that composite portions are formed where they are bonded together by the strips of the first adhesive, and separated portions are formed where the membrane and the first sheet are free from one another. The other side of the membrane is then coated with an additional layer of adhesive, for example a hot melt bonding material. Then, sealing members can be cut from the resultant composite elongate strip, with each sealing member having a composite portion in which the membrane and the first sheet are bonded together and a separated portion in which the membrane and the first sheet are free of one another. The free portion of the first sheet then forms a tab, for removal of the sealing member, in use, after it has been bonded to the lip of a container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.