Bookbinding and its products
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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May 8, 1990
Grant Date -
N/A
app pub date -
Jun 7, 1988
filing date -
Jun 10, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of bookbinding. Sheets to be bound have at least an edge portion which is formed of thermoplastic. A thermoplastic portion of a spine is placed against these arranged edges. Urging the spine against these edges while causing relative reciprocation therebetween in the plane of the arranged edges effects thermal bonding of the sheets to the spine. In an alternative embodiment, plain paper is used with a thermoplastic film arranged between the edges of the sheets and the thermoplastic portion of the spine.
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