JPH05471U - Book and book cover - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a book and a book cover that can enjoy a leather-like feel and have good printing workability. A book characterized in that the whole or at least a part of the surface of a book cover has a layer containing expandable microcapsules and an adhesive and having a friction angle of 30 to 55 °. A book cover characterized in that the whole or at least a part of the side not contacting the book has a layer containing expandable microcapsules and an adhesive and having a friction angle of 30 to 55 °.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention relates to a book and a book cover, and in particular, can enjoy a leather-like feel and can be printed. The present invention relates to a book and a book cover that are good in business.

[0002]

[Prior art]

  The cover of the book is generally based on paper, synthetic paper, non-woven fabric, film, cloth, leather, synthetic leather, etc. It is used as a material, among which paper, synthetic paper, non-woven fabric, film, etc. are inexpensive. It is widely used because it can be easily decorated by printing. But this These base materials are cold and thin to the touch and have a poor sense of thickness and lack of luxury. . On the other hand, cloth, leather, synthetic leather, etc., have a tight feel when touched by the hand, and a high-class feeling However, it is expensive for the cover and is used only in a small part.

[0003]   The book cover protects the book from dirt and enhances the decoration of the book. Widely used. This book cover is also usually paper, synthetic paper, non-woven fabric, film , Cloth, leather, synthetic leather, etc. are used as the base material.

[0004]   On the other hand, the sheet with the coating layer containing expandable microcapsules has a leather-like texture. Although it is already known that the sheet provided with the coating layer generally has poor slipperiness. In addition, there is a problem that the workability of printing is poor and the handleability of books is poor.

[0005]

[Problems to be solved by the device]

  In view of the current situation, the inventors of the present invention have been keenly aware of the base material of book covers and book covers. As a result of our own research, we found that the surface of paper, synthetic paper, non-woven fabric, film, etc., has a foaming property. A coating layer containing microcapsules is provided, and its friction angle is set to 30 to 55 °. It is cheap and has a leather-like feel by using a sheet that has excellent printing workability. He found that he could obtain a book or book cover and arrived at the present invention.

[0006]

[Means for solving the problem]

  According to the present invention, the whole or at least a part of the surface of the cover of a book has a foamable micro Having a layer containing a capsule and an adhesive and having a friction angle of 30 to 55 °. It is a featured book.   In addition, the present invention is such that the whole or at least a part of the side not contacting the book is foamable. It has a layer containing microcapsules and an adhesive and having a friction angle of 30 to 55 °. It is a book cover characterized by that.

[0007]

[Action]

  The present invention has a friction angle of 30 to 30 on the surface of a substrate such as paper, synthetic paper, non-woven fabric, and film. A layer containing at least the expandable microcapsules and the adhesive at 55 ° Using the provided sheet, it is processed into a form known in the art, and if necessary, one side or both sides are processed. The surface of the book has a decorative print and is used as a book cover or a book cover.

[0008]   The layer containing at least the expandable microcapsules and the adhesive has a leather-like texture For good workability in printing, the friction angle of the layer is 30 to 55 °, preferably Is preferably in the range of 35 to 45 °. By the way, the leather-like texture is extremely small at 30 ° or less. On the other hand, at 55 ° or higher, the slipperiness is poor, so the registration is difficult in sheet-fed printing. I said that it was difficult to do it accurately, it was difficult to align the uneven bundle of sheets, and it was difficult to store the books in the bookshelf The problem arises. The friction angle in the present invention is as described in J. Tappi Paper Pulp Test Method N According to O31-79, the friction angle with respect to a high-quality paper is measured.

[0009]   The expandable microcapsules include, for example, n-butane, i-butane, and petroleum as a core substance. As a wall film agent for capsules by encapsulating low boiling point hydrocarbons such as tantan and neopentane. Such as vinylidene chloride, acrylonitrile, and methyl methacrylate. Thermoplastics based on aromatic vinyl compounds such as acrylate and styrene There are microcapsules made of resin, and commercially available products are Matsumoto Micros Fair F-30, F-50, F-80 (Matsumoto Yushi Co., Ltd.), Expancel WU-6 42, WU-551, WU-462 (manufactured by Expancel Co.) and the like can be exemplified.

[0010]   As an adhesive, when applied as an aqueous system, a latex binder, When applying as a water-soluble binder or non-aqueous solution, use an oil-soluble binder. Be done. When it is cured with electron beams or ultraviolet rays, it has an ethylenically unsaturated bond. Monomers, oligomers or prepolymers are used.

[0011]   The latex-based binder used here is a styrene-butadiene-based binder. Latex, acrylonitrile-butadiene based latex, methyl methacrylate To-butadiene latex, acrylic ester latex, vinyl acetate Latex, vinyl chloride latex, and functional groups such as acrylic acid The thing which was included is mentioned.

[0012]   Water-soluble binders include proteins such as gelatin and casein, ethers Starch such as modified starch, esterified starch, oxidized starch, carboxymethyl cellulose, Cellulose such as hydroxyethyl cellulose, sodium alginate, arabicago Water-soluble natural high molecular compounds such as polysaccharides such as gum, polyvinyl alcohol, polyacetal Such as phosphoric acid, polyvinylpyrrolidone, polyacrylamide, maleic acid copolymer, etc. Such a water-soluble synthetic polymer compound can be used.

[0013]   Examples of oil-soluble binders include natural resins such as rosin, copal, and Dalman. Ethyl cellulose, hydroxypropyl cellulose, hydroxyethyl cellulose Semi-finished products such as cellulose, cellulose acetate propionate, polymerized rosin, ester gum, etc. Synthetic resin, phenol resin, melamine resin, xylene resin, urea resin, petroleum resin, Alkyd resin, acrylic resin, vinyl chloride / vinyl acetate copolymer, polyamide resin Examples include synthetic resins such as oil, polyurethane, and epoxy resin.

[0014]   Also, a monomer having an ethylenically unsaturated bond that cures with electron beams or ultraviolet rays, As oligomers and prepolymers, various monofunctional and polyfunctional (meth) acrylic acid Conventionally known ester, polyester acrylate, polyurethane acrylate, etc. Compounds.   Above all, an adhesive having a glass transition point of 40 ° C. or lower is preferable in terms of the effect of leather-like feeling. Yes.

[0015]   The expandable microcapsules and the adhesive are usually added to 100 parts by weight of the adhesive. 1 to 90 parts by weight of the foamable microcapsule, preferably 3 to 50 parts by weight, more preferably It is preferably adjusted to 5 to 30 parts by weight.

[0016]   In addition, the paint that mainly consists of expandable microcapsules and adhesive suppresses the friction angle. Control, improve ink acceptance, prevent printing trouble due to static electricity, For the purpose of blocking prevention, silica, aluminum hydroxide, calcium carbonate Pigments such as um, kaolin, titanium oxide, plastic pigments, polyethylene Release agent such as wax, surfactant, dispersant, antistatic agent, antioxidant, antifoaming agent, Auxiliary agents such as colorants and fluorescent dyes can be added as necessary.   The paint is a foamable microcapsule and a necessary medium in a medium such as water or an organic solvent. It is prepared by further adding an auxiliary agent such as a pigment and further by adding an adhesive.

[0017]   The support used in the present invention includes high-quality paper, coated paper, art paper, and cast paper. Regular paper such as paper, kraft paper, synthetic paper, film, non-woven fabric, metallized paper, metal foil, etc. What is used for the cover and book cover of can be used. Of course, use a colored support It can also enhance decorativeness. Also, the coating method is not limited, and Bar coater, air knife coater, gravure coater, roll coater, etc. Any known coating machine can be used.

The coating amount of the microcapsule-containing coating is generally about 1 to 20 g / m ² , preferably 3 to 15 g / m ² after drying in terms of the effect of leather-like feel and cost. Adjusted to. The foaming of the microcapsules is usually performed in a drying step when the capsule coating material is applied to the substrate, but in some cases, reheating with a coater or the like or heating during the printing process is also possible. The heating temperature at that time varies depending on the glass transition point of the capsule wall film used, the treatment time, etc. and cannot be generally stated, but in the case of commercially available capsules, it is preferably set to 90 to 170 ° C. As a heating method, a conventionally known method such as hot air, a heat roll, an infrared heater, or a microwave can be used. When the adhesion between the support and the leather-like coating layer is insufficient, the support may be previously treated with a primer.

[0019]

【Example】

  Hereinafter, the present invention will be described with reference to examples, but the present invention is limited to only the examples Not a thing. Unless otherwise specified, "parts" and "%" in the examples indicate parts by weight and% by weight. .

[0020] Example 1   A paint having the following composition was prepared as a paint containing expandable microcapsules, and 80 g / m ² Of colored kraft paper (manufactured by Daishowa Paper Manufacturing; <SSS> touch, leather, brown) 10g / m dry weight on the surface²Apply it with an air knife coater so that A leather-like sheet was obtained by drying at 0 ° C. The friction angle of this leather-like sheet is 45 ° It was [Paint containing foamable microcapsules] Effervescent microcapsule (trade name: EXPANCEL WU-642, EXPANCE 5 parts Styrene-butadiene latex (trade name: P-9Y86, Sumitomo Nogatak Co., Ltd. Made, solid content concentration 49%) 90 parts Aluminum hydroxide (Product name: Heidilite H-42, Showa Denko) 45 parts Anionic antistatic agent (product name: Chemistat 6120, manufactured by Sanyo Kasei) 5 parts 105 parts of water [Creation of book cover]   The obtained leather sheet was printed with an offset rotary printing machine to create a book cover. . Incidentally, there were no troubles during printing.

[0021] Comparative Example 1   Example except that the paint having the following composition was used as the paint containing expandable microcapsules A leather-like sheet was obtained in the same manner as in 1. The friction angle of this leather-like sheet is 65 ° It was [Paint containing foamable microcapsules] Effervescent microcapsule (trade name: EXPANCEL WU-642, EXPANCE 5 parts Styrene-butadiene latex (trade name: P-9Y86, Sumitomo Nogatak Co., Ltd. Made, solid content concentration 49%) 90 parts Anionic antistatic agent (product name: Chemistat 6120, manufactured by Sanyo Kasei) 5 parts 20 parts of water [Creation of book cover]   The obtained leather sheet was printed with an offset rotary printing machine, The paper was not easy to pass and could not be passed smoothly. In addition, we also perform paper alignment after sheet cutting. It was difficult.

[0022] Comparative example 2   Example except that the paint having the following composition was used as the paint containing expandable microcapsules A leather-like sheet was obtained in the same manner as in 1. The friction angle of this leather-like sheet is 28 ° It was [Paint containing foamable microcapsules] Effervescent microcapsule (trade name: EXPANCEL WU-642, EXPANCE 0.5 parts Styrene-butadiene latex (trade name: L-2301, manufactured by Asahi Kasei Corporation, solid content Concentration 50%) 90 parts Anionic antistatic agent (product name: Chemistat 6120, manufactured by Sanyo Kasei) 5 parts Aluminum hydroxide (Product name: Heidilite H-42, Showa Denko) 45 parts 105 parts of water [Creation of book cover]   The resulting leather sheet is printed with an offset flat-format printing machine to create a book cover. It was Although there was no problem in workability during printing, it had a poor leather-like feel.

Example 2 The coating composition containing expandable microcapsules obtained in Example 1 was applied on the surface of 120 g / m ² of colored kraft paper with a bar coater to a dry weight of 7 g / m ^2, and the temperature was 140 ° C. And dried to obtain a leather-like sheet. The friction angle of this leather-like sheet was 43 °. [Preparation of Book Cover] The obtained leather sheet was printed with an offset plain printing machine to prepare a book cover. Incidentally, there were no troubles during printing.

[0024] Comparative Example 3   Example except that the paint having the following composition was used as the paint containing expandable microcapsules A leather-like sheet was obtained in the same manner as in 2. The friction angle of this leather-like sheet is 65 ° It was [Paint containing foamable microcapsules] Effervescent microcapsule (trade name: EXPANCEL WU-642, EXPANCE 10 parts Styrene-butadiene latex (trade name: P-9Y86, Sumitomo Nogatak Co., Ltd. Made, solid content concentration 49%) 90 parts Anionic antistatic agent (product name: Chemistat 6120, manufactured by Sanyo Kasei) 5 parts 20 parts of water [Creating a book cover]   The obtained leather sheet was printed with an offset rotary printing machine, The paper was not easy to pass and could not be passed smoothly. In addition, we also perform paper alignment after sheet cutting. It was difficult.

[0025] Comparative Example 4   Example except that the paint having the following composition was used as the paint containing expandable microcapsules A leather-like sheet was obtained in the same manner as in 2. The friction angle of this leather-like sheet is 28 ° It was [Paint containing foamable microcapsules] Effervescent microcapsule (trade name: EXPANCEL WU-642, EXPANCE 1.0 part Styrene-butadiene latex (trade name: L-2301, manufactured by Asahi Kasei Corporation, solid content Concentration 50%) 90 parts Anionic antistatic agent (product name: Chemistat 6120, manufactured by Sanyo Kasei) 5 parts Aluminum hydroxide (Product name: Heidilite H-42, Showa Denko) 45 parts 105 parts of water [Creating a book cover]   Print on the obtained leather sheet with an offset plain printing machine to make a book cover. I made it. Although there was no problem in workability during printing, it had a poor leather-like feel. It was

[0026]

[Effect of device]

  The cover of the book obtained in Example 1 has the texture of synthetic leather, and has good workability during printing. There was no problem. The book cover obtained in Example 2 also has the texture of synthetic leather, In addition, there was no problem in workability during printing.

[Brief description of drawings]

FIG. 1 is a sectional view illustrating a book of the present invention.

FIG. 2 is a sectional view illustrating a book cover of the present invention.

[Explanation of symbols]

1: book 2: Cover 3: Effervescent microcapsule-containing layer 4: Book cover 5: Book 6: Effervescent microcapsule-containing layer 7: Cover

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Creator Shunsuke Shioi             4-3-1, Jokoji, Amagasaki, Hyogo Kanzaki             Kanzaki Factory of Paper Manufacturing Co., Ltd.

Claims (2)

[Scope of utility model registration request] 1. The whole or at least a part of the surface of a book cover contains expandable microcapsules and an adhesive,
A book having a layer having a friction angle of 30 to 55 °. 2. A book cover, wherein the whole or at least a part of the side not contacting the book has a layer containing expandable microcapsules and an adhesive and having a friction angle of 30 to 55 °.