JPS5811573A - Adhesive for binding notepaper - Google Patents

Abstract

PURPOSE:The titled adhesive comprising PVA as a main component, ueful for binding notepaper for copies to be piled and fed on the automatic feed part of facsimile, etc., having high bond strength in bookbinding, being cured fully after drying, easily released, not adhering again. CONSTITUTION:The titled adhesive is used for binding notepaper for copies to be fed normally, even if the copies are piled on the automatic feed part of a facsimile or various kinds of duplicating machines. It comprises PVA as a main component. When it is used together with starch, casein glue, >=50wt% PVA is blended with the starch, etc., and when it is used together with polyvinyl acetate paste, >=70wt% PVA is blended with the paste. In applying the adhesive, preferably the solid content is 10-50wt% and the viscosity is 1,000-100,000cps (30 deg.C).

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an adhesive for notebook binding, and is preferably used when creating manuscripts that are stacked and fed into the automatic paper feeding section of 7-axis printers or various types of copying machines. There are many ways to obtain records by facsimile or each S copy 1k (including Ill manuscript paper electronic plate making machines, etc.) regarding the ** agent used in the binding of the paper for that purpose.
Most of the manuscripts used are handwritten or typewritten on paper.

These all[s are placed in sheet form and placed in an electronic transmission device or in the automatic paper feeding section of a copying machine, and as the device operates, each document is fed into a predetermined location. The paper sheets used to create such manuscripts are usually made of multiple sheets of paper of a certain size stacked one on top of the other and one end (binding margin) attached with adhesive for ease of handling. Of course, as mentioned above, once characters, figures, etc. are drawn on this paper and a single manuscript is created, it is peeled off from other paper sheets, and therefore it is transferred to the 7-axis paper feeder or the automatic paper feeder of each copying machine. At least when placed on the paper, each note (or more accurately, a manuscript) is completely independent, and there is a situation in which two or three or more notes are attached to each other and fed at the same time. %A6 Conventionally, as mentioned above, paper sheets used for creating manuscripts such as C are stacked with multiple sheets of paper of a certain size, and one end of the paper is stacked on top of the other. The sections (binding margin S) are attached with adhesive, and each sheet is fixed like a booklet so that it does not fall apart, making it easy to carry and handle. Adhesives include (1) naturally occurring water-based adhesives such as starch glue, glue-based glue, and casein-based glue; (2) synthetic resin emulsions such as polyvinyl acetate and polyacrylic acid ester; Like copolymer emulsions such as polymers and vinyl acetate-acrylic copolymers! JP Adhesive (3) Solvent-based adhesives such as melamine resin and 4-lyester resin are used.

However, notepads bound with the adhesive described in (1) above have been widely used because the adhesive itself is naturally abundant and inexpensive, but the adhesive dries slowly and lacks initial adhesive strength. Therefore, it has disadvantages such as poor working efficiency and poor water resistance.

In addition, in (2) above (notes bound with the adhesive of 31, the adhesive is mainly made of synthetic resin, so the purpose of the adhesive is different depending on the blending method). Depending on the selection of resin,
After binding, the manuscript is written on paper, typed, etc., and is peeled off sheet by sheet. When it is stacked again in the automatic paper feeding section of a facsimile machine or various types of copying machines, it is reprinted sheet by sheet under its own weight. ◇In addition, since the adhesive mentioned in (3) above contains an organic solvent, it cannot be exposed to fire, ventilation, toxicity, etc. It is troublesome in that it requires sufficient care in handling and storage.

As can be inferred from what has been described so far, the characteristics of the adhesive used for creating manuscripts used in facsimile machines or various copying machines are such that
It is necessary to adhere the paper to paper sufficiently on one side (the binding margin), and at the same time, it is necessary that each sheet can be easily peeled off and has poor adhesiveness.
There is currently no adhesive for notebook binding that satisfies these characteristics on the market. For example, vinyl acetate emulsion resin commercially available for general paper work, non-binding binding, cover book binding, etc. (r Niji KK 1 paper work Zendo 1) G adhesive for bookbinding of notebooks targeted by the present invention When used as a binding agent, the work efficiency during bookbinding is good, but the adhesive retains its tackiness for a long time, and as a result, multiple sheets of manuscripts made with notes bound using such adhesive are transferred to an electronic transmission device. When paper sheets are stacked in the automatic paper feed section of various copying machines, inconvenient phenomena such as multiple sheet feeding and unfeeding occur, making normal paper feeding difficult.

In view of the current situation, the inventors of the present invention have conducted extensive research on factor tV or adhesives for binding paper sheets used for manuscripts used in various copying machines, and have found that adhesives have a strong adhesive force during book binding.

Moreover, we believe that the best results can be obtained by using an adhesive that can sufficiently harden after drying, and as a result of extensive research into inexpensive binders, we have found that the intended use of the present invention is aJ
It has been found that polyvinyl alcohol is extremely effective as an adhesive for bookbinding. The FJ8 of this invention was completed based on such knowledge. ◇However, the purpose of the present invention is to ensure that even if a large number of originals are piled up in the automatic paper feeding section of an electronic transmission device or an 8ka photocopier, it will not work properly. Like paper feeding,
The object of the present invention is to provide a 9#ilA book adhesive for use in notepads used for creating the manuscripts.The present invention is for feeding a plurality of sheets in stacks to an automatic paper feeding section of a facsimile machine or various types of copying machines. For that purpose on the notepad used when creating the manuscript! III! l! The adhesive used at this time is mainly composed of polyvinyl alcohol.

The BA of the present invention will be explained in more detail below.
The adhesive is used for special purposes and consists of a water bath liquid or emulsion resin containing polyvinyl alcohol as a main component. This adhesive allows the addition of commonly used plasticizers without causing a decrease in adhesive strength, and since no adverse effects are seen due to the addition of plasticizers, it is completely cured after drying.

In addition, the "adhesive mainly composed of polyvinyl alcohol" as used in the present invention refers to adhesives consisting of polyvinyl alcohol alone, or combinations of polyvinyl alcohol and starch, casein-based natural glue, vinyl acetate emulsion, etc. It is well expressed in the sense that it also includes what it is. The vinyl alcohol adhesive is not particularly limited, and commercially available products such as Polysizer (Showa Kobunshi K)
(manufactured by K), Gohsenol (manufactured by Nippon Gosei Kagaku Kogyo KK), Fueki Nori Super (manufactured by Fuki Nori Kogyo KK), Tokiwanol 1
000 (manufactured by Denban Kagaku Kogyo KK) etc. are available.

Starch and casein glue are not particularly limited as adhesives, and commercially available products include, for example, Tokiwa Nori Ne No. 1, No. 2, and No. 3.
Examples include No. 4, No. 5 (manufactured by Denban Kagaku Kogyo KK), Nonoio Starch (Nippon Kagaku KKm), and 7 Eki Glue (Fuki Nori Koto).

The vinyl acetate adhesive is not particularly limited as long as it is an emulsion type, and commercially available products include 2-nd B-f, B-100, B170H%B100 for paper processing, etc.
OH, B5000H (Konishi KK[), Cypinol G
H-, 100, RM-26, M-100, H8-50,
Examples include HB-25 (manufactured by Saiden Chemical KK).

In the adhesive of the present invention, when the polyvinyl alcohol resin is used in combination with starch and casein fruit trees, the blending amount is 50% or more, and when it is used in combination with polyvinyl acetate glue? It is necessary to set the amount to be greater than or equal to the OTL quantity axis (
All of the above are solid content ratios) o/! If the proportion of J vinyl alcohol resin in the entire adhesive is less than 50% by weight when used together with the former S powder and casein fruit tree, not only will the effect of polyvinyl alcohol addition not be obtained;
It becomes difficult to apply the adhesive uniformly. In addition, if the ratio of the latter polyvinyl alcohol resin to the entire adhesive is less than 70% when used in combination with polyvinyl acetate adhesive, complete curing after drying may not be obtained (produces adhesive properties). 〇Actually, when using the adhesive of the present invention in the coating process,
The solid content is 1'0 to 100% by weight, preferably 10 to 40% by weight, and the viscosity is 1,000 to 100,000 centimeters.
It is desirable for the work to be polished to a certain temperature (30°C), but it is not necessary to stick to this condition. Bookbinding is
If necessary, insert the back i-le paper into the printed and stamped flat-sized product for each fixed number of sheets, and apply the adhesive according to the present invention to the binding margin with a brush (hand-applying) or by machine. Apply by (
In some cases, Japanese paper is pasted on top of the paper, and after it is aged day and night, it is cut and a cover is pasted to make it ready for binding.The notebooks bound in this way are made with the adhesive used there. Because it has a strong adhesive force during bookbinding and can be sufficiently hardened after drying, ridges after adhesion aging will not cause any problems during work, and when using this bound notepad, It can be removed cleanly when exfoliating one by one.

There was no re-adhesion after peeling, and the paper feeding properties were excellent when used as manuscripts for facsimile machines, various copying machines, etc.

Next, examples and comparative examples will be shown.

Example! High-quality paper cut to A-4 size (basis weight 64 f/m 50
0 sheets on 1/-l paper, aligning the edges, and applying a 4-lipinyl alcohol-based water-soluble IS agent (solid content 20
%, viscosity wIL 50,000 to 100,000 cm? Is/
30 degrees Celsius) was applied, and then Japanese paper (basis weight 15 f~) was pasted on it and cut into matured edges to create a bound notebook.The bound notebook was peeled off one by one and a facsimile machine (made by KK Ricoh) was prepared. , RIFAX-10008), I set 50 sheets stacked in the automatic document feeder and fed them, and there were no cases of multi-sheet feeding or paper jams (paper not coming out of the document feeder), indicating excellent feeding. In addition, even after repeating the previous paper passing test 10 times, exactly the same results were obtained.Example 2 The adhesive was mixed with an aqueous solution of Rivier alcohol (solid content 10%).
, viscosity 5ooo~6000 centipoise/lG'0
．． ) and 30 parts by weight of a starch water bath solution (50% periphery, viscosity 7000-17000 centiliters/30°C). lll
Tomatsumu: I made a bound notebook using a similar method.

Using this bound notepad, a paper passing test similar to that of Real 11t@1 was conducted (however, K K IJ: ff -
(Using IIIRIFAX-600S), it showed good conveyance and no cracking occurred for any period of time.Example 3 Using adhesive,? Rizenil alcohol aqueous solution (solid content 20%
, viscosity 980,000 to 100,000 cm 4 is/30 υ
) 801 iL parts sharp vinyl acetate! Lucion water #!
A bound notebook was made in exactly the same manner as in Example 1, except that the mixture was replaced with a mixture of 20 parts by weight of liquid (35% solids, viscosity [500-1200 cm 4 is/30°C)] ◎ When a paper passing test similar to that in Example 1 was conducted using this bound notebook, it showed good transportability and no problems occurred. Solid content 50%, viscosity 5500-9000 cm/30℃
) A bound notebook was made by the same method as in Example 17-J, except that .

When a paper feeding test similar to that in Example 1 was carried out using this bound paper, it was found that the paper sheets were peeled off one by one in the automatic document feeder and the 50 paper sheets stacked on top of each other re-adhered due to their own weight, making it difficult to feed a large number of sheets. This occurred frequently, and in even worse cases, unfeeding paper jams occurred, making it impossible to use in practice.
The results were almost the same 0

Claims (1)

[Claims] ! , 7 Aximiri or each A11111 The adhesive used in the binding process in the rough part used when creating manuscripts that are stacked and fed in multiple sheets into the automatic paper feeder of a copying machine is mainly composed of polyvinyl alcohol. A bookbinding adhesive with a content of 8%.