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US 4,923,351 AGranted
Bookbinding and its products
AssigneeMaruni Kasei Kabushiki Kaisha
InventorKenjiro Nishikawa
Life of this patent
Estimating the term…
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.
Claims15
A method of bookbinding, comprising the steps of:
- providing a plurality of sheets, each of said sheets having at least a portion of an edge thereof which includes a first thermoplastic, spine means having an inner face, at least a portion of said inner face including a second thermoplastic, clamp means for clamping said sheets, and press means;
- arranging said sheets in a substantially superposed relation with said edges substantially superposed;
- clamping said sheets to maintain said edges in essential alignment, said edges thereby defining a surface;
- placing said portion of said spine means in contact with said edges and said press means in contact with said spine means at a position opposite said edges;
- and
- urging said press means against said edges to apply a force to said spine means and therefore said edges while causing relative reciprocation between said spine means and said sheets within a plane substantially parallel to said surface defined by said edges, whereby friction heat generated by said reciprocation bonds said sheets to said spine means.
3 more elements
A method of bookbinding, comprising the steps of:
- providing a plurality of sheets, spine means having an inner face, at least a portion of said inner face including a first thermoplastic, at least one film formed of a second thermoplastic, clamp means for clamping said sheets, and press means;
- arranging said sheets in a substantially superposed relation with at least one edge of said sheets substantially superposed;
- placing said film at least over substantially all of one of said at least one edge of said sheets;
- clamping said sheets to maintain said one edge of said sheets in essential alignment, said one edge of said sheets thereby defining a surface at least substantially covered by said film;
- placing said portion of said spine means in contact with said film and said press means in contact with said spine means, both at a position opposite said one edge of said sheets;
- and
- urging said press means against said one edge to apply a force to said spine means and therefore said at least one film and said one edge of said sheets while causing relative reciprocation between said spine means and said sheets within a plane substantially parallel to said surface defined by said one edge of said sheets, whereby friction heat generated by said reciprocation bonds said at least one film to said sheets and said spine means.
4 more elements
Dependencies are inferred from the claim text.