Corrugating machinery
US4049485A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 23, 1976 |
| Grant date | Sep 20, 1977 |
| Priority date | — |
| Expiry date | Feb 23, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B38/08
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Apparatus for applying pressure in a controlled manner to a moving web of material for the purpose of transferring heat to the web passing over heating means, for curing the adhesive thus bonding together the component sheets making up the web, includes a plurality of pressure rolls resting directly or indirectly on the web, manual and automatic adjustments for varying the effective weight of the rolls to vary said applied pressure in accord with variations in the speed of the web, such being adjustable for varying the rate of said adjustment, and an arrangement for preselecting a condition such that at zero web speed, the effective weight has an initial positive or negative value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.