Bookbinding cloth
US5052717A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jul 11, 1990 |
| Grant date | Oct 1, 1991 |
| Priority date | — |
| Expiry date | Jul 11, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S412/901
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A resilient adhesive resin tab adapted to permanently secure paper sheets thereto by edge-binding in a hot melt condition is, at one extreme side peripheral area thereof, bonded or heat-sealed to a width-adjustable backbone of a bookbinding cloth. The adhesive tab may be split, before use, along a selective one of a plurality of equally spaced, lengthwise extending slit rows, to adjust the width in conformity with a thickness of the paper sheets to be edge-bound. One of side extensions formed integrally with the backbone is larger than the other which improves applicability of this bookbinding cloth to bookbinding into a variable thick booklet by folding back the extended portion of the larger side extension in dependence upon the adjusted width of the backbone. The folded end is bonded to the larger side extension by adhesive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.