Crease-lined packaging laminate, a method of providing a packaging laminate with crease lines, and packaging containers produced from the laminate
US6773790B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 23, 1998 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Dec 23, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24959
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The disclosure relates to a crease-lined packaging laminate (20) which makes for more distinct and well-formed fold edges and thereby packaging containers with an attractive appearance and good configurational stability and handling stability, as well as a simple method of providing a packaging laminate with crease lines, which makes for more rational, and more economical changing of crease line patterns without the employment of expensive creasing tools. A packaging laminate (20) comprising at least two layers (11, 12) which both contribute to the total rigidity of the packaging laminate is provided with fold indications in that the adhesion between the two layers is reduced or eliminated along the linear regions along which the packaging laminate is to be folded. Since both of the layers can be deformed more independently of one another along the linear adhesion reduced fold regions (14), the total flexural resistance of the packaging laminate is less in these regions than in the rest of the packaging laminate. The adhesive bonding strength between the two layers (11, 12) may, for example, be reduced by applying an adhesion-counteracting agent on one or both of the layers within …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.