Easily tearable fastener tape, method of producing the fastener tape, packaging bag with easily tearable fastener tape, and device and method for producing the packaging bag
US8540428B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2007 |
| Grant date | Sep 24, 2013 |
| Priority date | — |
| Expiry date | Apr 6, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/51
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A belt-shaped base of a male member of a zipper tape attached to an inner surface of a bag body includes: a main body on which an engagement portion is provided; a first projecting portion provided on an opening-side of the main body; a thin portion connected to an opening-side of the first projecting portion; and a second projecting portion connected to an opening-side of the thin portion. A belt-shaped base of a female member includes: a main body; a first projecting portion; a thin portion; and a second projecting portion. When the zipper tape is fused onto the bag body, a space is provided between the thin portions and a film of the bag body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.