Bookbinding cover
US5156510A · kind A · utility
17Cited by
6References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 5, 1990 |
| Grant date | Oct 20, 1992 |
| Priority date | — |
| Expiry date | Dec 5, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42D3/002
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A bookbinding cover has a front cover, a rear cover and a back plate which is connected to the front and rear cover, and a hot-melt adhesive layer applied to the back plate. The adhesive layer has a multi-layer structure, and the softening point of each of the layers which form the adhesive layer decreases with an increase in distance from the back plate. The bookbinding cover permits simple bookbinding with sufficient strength for a short time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.