Device for instantaneously changing the gluing width of a web of paper in the manufacture of corrugated cardboard, and process for use of such a device
US4549924A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 1984 |
| Grant date | Oct 29, 1985 |
| Priority date | — |
| Expiry date | Jan 5, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1798
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Device permitting the instantaneous changing of the width of application of glue to a web of paper in the manufacture of corrugated cardboard, the glue being applied to the web with the aid of a gluing cylinder (5) driven rotationally and dipping into a tank of glue over a width adjusted by two barriers which are movable in the tank. It includes a detachable auxiliary doctor device (1) comprising two doctors (2) to be applied momentarily to the two longitudinal ends of the gluing cylinder (5), on the non-immersed top part of the latter, the said doctor device being in addition equipped with a device for adjusting the distance (L3) left free for the passage of the glue between the two doctors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.