Device for joining sheets of cardboard to form corrugated cardboard
US7291243B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 14, 2004 |
| Grant date | Nov 6, 2007 |
| Priority date | — |
| Expiry date | Dec 23, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31F1/2877
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The device to join a sheet of smooth cardboard (N4) to a sheet of corrugated cardboard (N1; N2; N3), comprises a series of heated plates (3) aligned according to a longitudinal direction of feed (F) of the cardboard and, above said heated plates, pressure elements (53) to press the cardboard against said heated plates, which are fastened by elastic elements to a supporting structure (41). The supporting structure comprises a plurality of frames (41) aligned according to the longitudinal direction (F) and the inclination of the frames is adjustable to modify the pressure profile applied by said pressure elements to the cardboard (C).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.