JP-7856974-B2 - pocket book

Inventors

• 高橋 秀雄
• 伊藤 広幸

Assignees

• 株式会社高橋書店
• 伊藤手帳株式会社

Dates

Publication Date

20260512

Application Date

20220728

Claims (5)

1. It is a notebook, The main body is constructed such that a sheet or a sheet stack made by folding sheets is used as a unit structure, and multiple unit structures are stacked on top of each other, with the multiple unit structures being bound together by thread at the position that will be the back of the notebook, It is composed of a cured aqueous emulsion adhesive mainly containing polyvinyl acetate, and is applied to the parts of the main body that are stitched together by the thread stitching to form a base hardening portion, It is composed of a cured product of a synthetic rubber-based hot melt adhesive mainly containing a styrene-based thermoplastic elastomer, and is applied to the base-hardened area to harden the main body, and A cover portion comprising a first planar portion, a second planar portion, and a third planar portion arranged in that order, wherein the first planar portion constitutes the front cover of the notebook, the second planar portion constitutes the spine of the notebook, and the third planar portion constitutes the back cover of the notebook, A notebook equipped with [features/equipment].
2. A notebook according to claim 1, Between the second planar portion and the lower hardening portion, there is no reinforcing material other than the cured synthetic rubber-based hot melt adhesive that constitutes the back hardening portion, and no reinforcing material that can reinforce the portion of the main body that is bound by the stitching. pocket book.
3. A notebook according to claim 1 or claim 2, The lower reinforcement portion, the back reinforcement portion, and the second planar portion have a degree of flexibility that allows them to deform in accordance with the displacement of the plurality of unit structures when the notebook is opened. pocket book.
4. A notebook according to claim 1 or claim 2, The aforementioned backing portion has self-adhesive properties that allow it to be peeled off and reattached. pocket book.
5. A notebook according to claim 1 or claim 2, Each of the aforementioned multiple unit structures contains multiple folded signatures, each corresponding to the aforementioned folded sheet weight, and further, The system includes a front endpaper and a back endpaper that are stacked in positions that sandwich the aforementioned multiple signatures from both sides in the stacking direction, The first planar portion is attached to the front endpaper, and the third planar portion is attached to the back endpaper. pocket book.

Description

This disclosure pertains to a notebook/diary. In bookbinding, two binding methods are known: thread stitching and perfect binding. In thread stitching, the spines of the laminated sheets are bound with thread, an adhesive is applied to the spine for under-binding, and then Japanese paper and gauze are glued to further reinforce the spine. In perfect binding, on the other hand, a hot-melt bookbinding adhesive is applied to the spine of the laminated sheets, thereby binding the spine and completing the spine reinforcement. EVA-based hot-melt adhesives and PUR-based hot-melt adhesives are known as hot-melt adhesives for bookbinding. EVA is an abbreviation for Ethylene Vinyl Acetate. PUR is an abbreviation for Polyurethane Reactive. For example, Examples 1 and 2 of Patent Document 1 below illustrate the use of PUR-based hot-melt adhesives, while Comparative Examples 1 and 2 of Patent Document 1 below illustrate the use of EVA-based hot-melt adhesives. Japanese Patent Publication No. 2020-32718 Figure 1A is a perspective view of the notebook from the upper left front. Figure 1B is a perspective view of the notebook from the lower right rear.Figure 2 is a schematic diagram showing the general structure of the main body, bottom reinforcement section, spine reinforcement section, and cover section. Next, the above-mentioned notebook will be described with reference to an exemplary embodiment. [Planner structure] As shown in Figures 1A, 1B, and 2, the notebook 1 comprises a main body 3, a bottom reinforcement 5, a spine reinforcement 7, and a cover 9. The main body 3 is constructed by stacking multiple unit structures, and at the spine of the notebook 1 (the leftmost part in the figures), the multiple unit structures are bound together by thread stitching. In this embodiment, the multiple unit structures include multiple (11 folds in this embodiment) folded signatures 11, as shown in Figure 2. Each signature 11 is a laminated structure (corresponding to an example of a folded sheet structure as described in this disclosure) formed by folding the original sheet into eight sections (i.e., repeating the bi-fold three times), resulting in eight sheets of paper (16 pages) of text being folded and stacked. Each of the multiple signatures 11 has predetermined content printed on it, and the multiple signatures 11 are collated in a predetermined order necessary to constitute the notebook 1. The front endpapers 13 and back endpapers 15 are stacked at the positions where multiple folded signatures 11 are sandwiched from both sides in the stacking direction. The front endpapers 13 and back endpapers 15 are structures formed by folding the original sheet in half. In this embodiment, after the multiple folded signatures 11 are bound together by thread stitching (though the thread is not shown), the front endpapers 13 are bonded to the signatures 11 with adhesive 17A, and the back endpapers 15 are bonded to the signatures 11 with adhesive 17B. The base hardening section 5 is composed of a cured product of an aqueous emulsion adhesive containing polyvinyl acetate as the main component. The base hardening section 5 is applied to the areas of the main body section 3 that are stitched together, thereby hardening the main body section 3. The spine reinforcement section 7 is constructed from a cured product of a synthetic rubber-based hot-melt adhesive containing styrene-based thermoplastic elastomer as the main component. The spine reinforcement section 7 is applied to the reinforced area to reinforce the spine of the main body section 3. Once the spine reinforcement section 7 is formed, the spine of the notebook 1 is reinforced, preventing the spine from cracking due to forces applied when opening and closing the notebook 1. In conventional thread-bound structures, the spine reinforcement section 7 was generally constructed by attaching Japanese paper and cheesecloth; however, in this embodiment, instead of Japanese paper and cheesecloth, a synthetic rubber-based hot-melt adhesive containing styrene-based thermoplastic elastomer as the main component is applied. The average thickness of the spine reinforcement section 7 is thicker than the average thickness of the lower reinforcement section 5, with a ratio of approximately 6:4. The cover portion 9 consists of a first surface portion 21, a second surface portion 22, and a third surface portion 23 arranged in that order. The first surface portion 21 constitutes the front cover of the notebook 1, the second surface portion 22 constitutes the spine of the notebook 1, and the third surface portion 23 constitutes the back cover of the notebook 1. The front endpaper 13 is attached to the first surface portion 21 of the cover portion 9 with adhesive 17C, and the back endpaper 15 is attached to the third surface portion 23 of the cover portion 9 with adhesive 17D. [Details of synthetic rubber hot melt adhesive] Next, the synthetic rubber-based hot melt adhesive that constitutes the backing po