Reclosable carton for granular materials
US5161734A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 1991 |
| Grant date | Nov 10, 1992 |
| Priority date | — |
| Expiry date | May 10, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D5/5415
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A sift-resistant, reclosable carton for granular or powdered materials. The carton is a six-sided enclosure including opposed top and bottom walls, opposing front and back walls, and opposing end walls. Each end wall is comprised of an inner layer having a top edge abutting the top wall and an outer layer. The outer layer has a horizontal tear strip thereacross. The front wall has an inner layer having a top edge abutting the top wall and an outer layer. The outer layer has a horizontal tear strip thereacross which is integral with the tear strips of the end walls, forming one continuous tear strip. A glue flap is integrally attached to the top edge of the inner layer of the front wall along substantially its full length. The glue flap has a distal attachment portion and a proximal locking portion. The two portions are joined along a full length line of weakness. The distal attachment portion is secured to the inner surface of the outer layer of the front wall above the tear strip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.