Fastener tape, method of and apparatus for making fastener tape, method of using fastener tape, and reclosable bag utilizing fastener tape
US7094455B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2004 |
| Grant date | Aug 22, 2006 |
| Priority date | — |
| Expiry date | Apr 21, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24174
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A fastener tape for use in the manufacture of reclosable plastic bags is provided. The fastener tape comprises an intermediate layer and a reclosable fastener profile thereon. The intermediate layer includes three layers of co-extruded plastic, with not more than 4% EVA as the outer two layers and HDPE as the middle layer. The intermediate layer is folded so as to bring portions of the intermediate layer into an opposing relationship. These opposing portions are then sealed together by a pair of seal bars. By carefully controlling the sealing temperature, a consistent peel seal is created between the opposing portions of the intermediate layer without the need for an adhesive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.