Pack, composite sheet for producing a pack, apparatus for producing the composite sheet, and process for producing vacuum packs
US4993555A · kind A · utility
8Cited by
5References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 10, 1989 |
| Grant date | Feb 19, 1991 |
| Priority date | — |
| Expiry date | Aug 10, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D75/66
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Pack. Packs consisting of a multilayer composite sheet are frequently used for holding aroma-sensitive commodities, particularly ground roasted coffee. The pack is composed of a central (coffee) block (10) and of fin folds projecting at both ends. In the region of the fin folds a tear-open strip (17) is provided under a closure seam (11) to facilitate the opening of the pack. The tear-open strip (17) likewise consists of a composite sheet and is connected to the pack-composite sheet by heat sealing to ensure that there is no impairment of taste of the pack's contents while at the same time guaranteeing a high-strength connection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.