Center special slotted container
US4771939A · kind A · utility
24Cited by
15References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 28, 1987 |
| Grant date | Sep 20, 1988 |
| Priority date | — |
| Expiry date | Aug 28, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S229/90
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A center special slotted container is shown which is manufactured from sheet of corrugated paper material. The blank is formed such that top and bottom flaps provide parallel edges in knock-down manufactured condition when the manufacturer's glue joint is made up. Before the glue joint is firmly set, this knock-down carton is readily processed in a squaring device of a folder-gluer (a Flexo folder-gluer is an example) to prove a quality manufactured carton, and overcome out-of-square defects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.