Method and apparatus for forming bookbinding strips
US5496253A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 1994 |
| Grant date | Mar 5, 1996 |
| Priority date | — |
| Expiry date | May 4, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1343
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Apparatus and method are disclosed for preparing a preprinted book cover for application to a book block in a perfect binding system A double-walled tubular attachment strip is adhesively attached to the cover spine portion of successive covers in a continuous process. Covers are fed onto a conveyor at a constant speed with a spacing between covers and adhesive is applied to the spine areas. Simultaneously a continuous double-walled attachment strip with a longitudinal lap joint in one wall is formed without adhesive from a source of paper web stock and pressed, lap joint down, onto the cover spines to form a continuous string of covers. The attachment strip is cut by laser cutting beam between each cover while the covers are moving. The double-walled attachment strip is formed by pulling the web under constant tension through side scoring wheels, hold-down shoes, and forming devices which have surfaces to fold the edges of the moving web through 180.degree. toward each other to form a lap joint. Prior to forming the double-walled strip, job information is printed on the web stock at a location which appears as the inside surface of the wall of the strip opposite the longitudinal l…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.