Perfect-bound booklet and method for manufacturing perfect-bound booklet
AssigneeFUJIFILM Business Innovation Corp.
InventorsShiori Chonan, Takashi Hasegawa
Life of this patent
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Abstract
A perfect-bound booklet includes a sheet set that is a stack of multiple sheets and multiple adhesive layers provided at an end of each sheet in the sheet set and interposed between the sheets and peelably bonding the sheets together, the multiple adhesive layers containing a thermoplastic adhesive agent, and the amount of the thermoplastic adhesive agent in the multiple adhesive layers changes from each of a first surface side and a second surface side of the booklet toward the middle of the booklet in the thickness direction.
Claims20
A perfect-bound booklet comprising:
- a sheet set that is a stack of a plurality of sheets;
- and
- a plurality of adhesive layers, each adhesive layer of the plurality of adhesive layers is provided at an end of each sheet in the sheet set and is interposed between the sheets and peelably bonds the sheets together, the plurality of adhesive layers containing a thermoplastic adhesive agent, wherein:
- an amount of the thermoplastic adhesive agent in the plurality of adhesive layers changes, in a thickness direction of the booklet, between a first surface side and a middle of the booklet and changes in the thickness direction between a second surface side of the booklet and the middle of the booklet, and
- the thermoplastic adhesive agent is a pressure-induced phase transition adhesive agent containing at least two resins with different glass transition temperatures, with a difference between a lowest glass transition temperature and a highest glass transition temperature of the glass transition temperatures of the at least two resins being 30° C. or greater.
The perfect-bound booklet comprising:
- a sheet set that is a stack of a plurality of sheets;
- and
- a plurality of adhesive layers, each adhesive layer of the plurality of adhesive layers is provided at an end of each sheet in the sheet set and is interposed between the sheets and peelably bonds the sheets together, the plurality of adhesive layers containing a thermoplastic adhesive agent, wherein:
- an amount of the thermoplastic adhesive agent in the plurality of adhesive layers changes, in a thickness direction of the booklet, between a first surface side and a middle of the booklet and changes in the thickness direction between a second surface side of the booklet and the middle of the booklet,
- each adhesive layer of the plurality of the adhesive layers are formed as a line pattern, a dot pattern, or a combination of the line pattern and the dot pattern of the thermoplastic adhesive agent, and
- the amount of the thermoplastic adhesive agent in each adhesive layer of the plurality of adhesive layers changes from each of the first surface side and the second surface side of the booklet toward the middle of the booklet in the thickness direction as a result of a change in at least one of a line width of the line pattern or a diameter of the dot pattern of the thermoplastic adhesive agent.
Dependencies are inferred from the claim text.