Machine for making corrugated board including a vacuum/positive pressure transfer roll
US5306384A · kind A · utility
7Cited by
6References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 12, 1992 |
| Grant date | Apr 26, 1994 |
| Priority date | — |
| Expiry date | Nov 12, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1712
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A machine for making corrugated board, comprising means to feed two separate webs between two respective pairs of corrugating rolls to form two corrugated layers, a first adhesive application for applying adhesive to the peaks of at least one of the two corrugated layers, means to bring the two corrugated layers together at the peaks of the corrugations, means to convey the joined corrugated layers past a second adhesive applicator for applying adhesive to the exposed peaks of one of the corrugated layers, and means to apply a liner web to the corrugated layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.