Clupak paper
US9945077B2 · kind B2 · utility
11Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2014 |
| Grant date | Apr 17, 2018 |
| Priority date | — |
| Expiry date | Jul 11, 2034 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H27/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Clupak paper is manufactured using a gap-former paper-making machine equipped with a Clupak system, in such a way that its longitudinal tensile energy absorption index and lateral tensile energy absorption index as specified in JIS P8113 become 2.5 J/g or more and 1.0 J/g or more, respectively. The paper has excellent strength characteristics in both the longitudinal and lateral directions, especially in the longitudinal direction so that when the Clupak paper can be processed into a sack, the sack rarely breaks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.