JPH0642205U - Covering reinforcement material for bookbinding - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a cover-covering reinforcing material that makes it possible to economically and easily recycle the cutting waste in the bookbinding process and the book after the bookbinding. [Structure] A sheet having a three-layer structure in which a water-soluble thin resin film 5 is sandwiched between two thin papers 4 and 4 is used as a cover-cover reinforcing material during bookbinding.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cover-covering reinforcing material for bookbinding, and an excellent cover-covering reinforcing material that is particularly effective when a book is reused as waste paper.

[0002]

[Prior art]

 So-called back-coated kanshisa with thin paper attached to the back and what is called back cloth (back-coated paper) made from Japanese paper have been commonly used as the reinforcing material for the cover during bookbinding.

[0003]

[Problems to be solved by the device]

 In general, back-coated ginseng is used, but since ginseng is used in this case, the ears cut off from the back-mounted ginseng (2) to be attached to the text paper (1) as shown in FIG. When trying to treat the scraps (3) of the department, it was difficult to recycle the ginseng, and it was difficult to recycle it, and it had to be discarded or incinerated. Also, if you stack several text papers with back side sesame paste pasted during the process, the glue on the sardines will rise and cause procking, or the stacked sardines will rise a little higher. There were some inconveniences, such as the fact that it was tilted and it was not possible to stack many. Also, when using a back cloth (backing paper), since it does not have wet strength, the strength of the back cloth (backing paper) decreases after the gluing process during the bookbinding process and before binding. It's hard.

[0004]

[Means for Solving the Problems]

 In order to eliminate these inconveniences, the present invention is for bookbinding, which has a three-layer structure in which a thin resin film soluble in water is sandwiched between two thin paper sheets laminated as shown in FIG. A cover sheet reinforcing material is provided. In other words, it has the same level of strength as when using ginseng, has the effect of preventing back leakage of glue by backing paper, and since it has thin paper on both sides, it also has double-sided adhesiveness. The present invention provides a cover-covering reinforcement material for bookbinding that facilitates the recycling of swarf and the post-bookbinding recycling. This problem is solved by sandwiching a water-soluble thin resin film between the two.

[0005]

[Action]

 The strength of thin paper is significantly lower than that when it is dry when it is wet with a large amount of water, for example, when water-soluble glue is applied, and it is not possible to use it for the purpose of the present invention. Although it is possible, a sandwiched resin film is sandwiched between them to form a three-layer structure, which makes it possible to sufficiently withstand practical use, and has reached the present invention by taking advantage of its soluble property. Therefore, the thickness of the laminated sheets can be reduced to about 0.1 mm, which is half of the thickness of 0.2 mm when using traditional gauze, and the paste can be glued during binding in the bookbinding process. Since it does not cause back leakage, there is no problem of blocking, etc., and the ease of adhesion is dramatically improved compared to that of ganshi.

[0006]

【Example】

 Using a reinforcing material (thickness: 85 to 90 μm), which is made by adhering two sheets of thin paper (made by Shirakawa) with a polyvinyl alcohol resin layer (trademark Hi-Selon C-200 made by Nigo Film Co., Ltd.) in between, It was used as a back cloth or as a substitute for the back-coated chilled gauze, and was bound using a vinyl acetate adhesive.

[0007]

[Comparative example]

 Instead of the thin paper used in the examples, a backing paper (back tape W = Fukui Special Paper Co., thickness 92 to 95 µm) and a backing kanso cloth were used for the same binding.

The features of the example and the comparative example are summarized as follows. Example Comparative Example 1 Comparative Example 2 (using back cloth) (using backing chilled gauze) No strength problem during bookbinding Vinyl acetate adhesive No problem No thickness problem (thin) No problem (thin) Stacking problem due to thickness Reproducibility Paper after cutting waste binding Both paper after cutting waste binding Both paper after cutting waste binding It is difficult to go back to the recycling process during binding Gluing Small amount of glue Small amount of glue Large amount of glue Large amount of adhesive Large amount of adhesive Large amount of adhesive (Side difference between front and back Finished state Aesthetic (no thread) Aesthetic (no thread) No aesthetic due to the thread

[0009]

[Effect of device]

 The use of the reinforcing material of the present invention not only allows the intended purpose of recycling, but also saves the amount of adhesive used in the bookbinding process, and can greatly reduce the thickness compared to the gauze cloth. Therefore, since the long tape-shaped reinforcing material used can be wound with a material of the same thickness for a long time, it also leads to a reduction in setup changes and also improves efficiency in the bookbinding process. It's a very big one.

[Brief description of drawings]

FIG. 1 is a schematic perspective view for explaining a state in which a backing cloth is placed on a text sheet during bookbinding.

FIG. 2 is an enlarged cross-sectional view showing a cover-covering reinforcing material for bookbinding of the present invention.

[Explanation of symbols]

(1) Text paper (2) Back-seasoned sardine cloth (3) Back-seasoned sardine cloth (2) Cut off ears (cutting waste (3)) (4) Thin paper (5) Water-soluble resin film layer

Claims (1)

[Scope of utility model registration request] 1. A cover-covering reinforcing material for bookbinding, which has a three-layer structure in which a thin water-soluble resin film is sandwiched between two thin paper sheets and bonded together.