Method of and means for making reclosable bags and method therefor
US4655862A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1986 |
| Grant date | Apr 7, 1987 |
| Priority date | — |
| Expiry date | Mar 7, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S493/927
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of making making reclosable bags and material for making the bags, and apparatus wherein in one aspect extruded resiliently flexible plastic profiled reclosable fastener strip means for reclosable bags is located across the longitudinal formation axis of the bag wall web material, and in another aspect of the invention single strip fastener strip has at one or more suitable locations therealong separations across the profiles, such as notches, to facilitate bending or folding of the strip upon itself so that the self-interlocking profiles of the portions of the strip folded upon themselves are adapted for reclosable interlocking with one another. The interlockable portions of the strip may have separable air tight sealing ribs therealong. The web and fastener material and fastener assembly is especially suitable for machines wherein the bags are formed, filled and sealed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.