TW548366B - Newsprint paper for offset printing - Google Patents

Abstract

The present invention is to provide a newsprint paper for offset printing having a thickness greater than 50 mum but smaller than 85 mum, excellent in printing operability and color printability. This newsprint paper for offset printing is obtained by coating a surface treatment agent comprising a water-soluble polymer, preferably starch and/or starch derivative, and an antislip agent on a newsprint base paper containing a bulkiness-imparting agent such as an ester compound from an (oxyalkylene group-containing) polyhydric alcohol and a fatty acid, followed by drying and then calendering. This newsprint paper thus obtained has a thickness greater than 50 mum but smaller than 85 mum and a dynamic coefficient of friction of 0.45-0.62.

Description

548366 A7

548366 Description of the invention (Improved post-smoothness, which will further reduce the fascination. Also, with the increase of color printing surface, the new suitability has new quality requirements, and the countermeasure is also one = shirt color printing [invention wants to solve The question] ',, class shout. =, Rub; = ~ thick =.: =;: The color printing suitability of the newsprint for printing is completed; Case ::. [Implementation Mode of the Invention], Human Case ^ It is related to the matter. On the newsprint base paper containing extender, the surface treatment agent with bath polymer and anti-slip agent is applied, and the thickness of the paper obtained after drying and calendering is 50 # m or more. Newspapers for lithographic printing over 85 A " 1 and with a coefficient of dynamic friction in the range of 0.45 ~ 〇 · 62. The newsprint base paper used in the present invention will be mechanical wood pulp (GP) and heat-sensitive wood pulp (TMP) Chemical mechanical thermal pulp (CTMP), semi-chemical paper pulp and other mechanical pulps, chemical pulp poly (CP) represented by sulfate pulp (KP) 'Deinking obtained after deinking old paper containing these pulps Pulp paper size is in accordance with China National Standard (CNS> A4) (Specifications: x〇 x 297) (Read well) Read the memorandum item and then fill in the form. 1 Write this book. This page is printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. 548366 A7 B7

V. Description of the invention (), ---: ----- · installation (please read the precautions on the back before filling this page) (DIP), and the recycled pulp obtained by decomposing the waste paper in the papermaking project, etc. It is mixed alone or in any ratio, and the extender described later is added to the paper making method of the general public paper machine. As for the blending rate of DIP, the recent high trend of DIP blending is 50 ~ 10. The range of 0% is ^ ideal. _ # The printing agent used by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs to print the invention used in this case can be listed in: Japanese Patent Publication No. 丨 Budai Dai No. Gazette and Japanese Patent Application No. 2000-34691, with polyvalent ethanol and fatty acids Ester compound, or hydroxyalkylene, polyvalent alcohol and fatty acid ester compound, and re-publishing the polyalcohol additive of higher ethanol described in Japanese Patent No. W098 / 03730, and the fats and oils described in Japanese Patent Application Laid-Open No. 11-200283 Non-ionic surfactants, sugar ethanol non-ionic surfactants, sugar-based non-ionic surfactants, polyhydroxyalkylene additives for specific fatty acids and fatty acid esters described in JP 11-200284, The combination of specific non-ionic surfactants and specific anionic surfactants described in Kaiping Publication No. 11-200285; and commercially available bulk drugs include suluzol VL from BASF, bibolume P liquid from Bayer, and Kao (shares). KB-08T, KB-08W, KB-110, KB-115, and Reactpeik of Sanjing (shares), etc. Among these incremental drugs, two or more kinds can be used together. The extender used in the invention of this case is affected by the pulp mix and internally added drugs, etc., and the increase effect and the degree of friction coefficient are low. Therefore, the regulation of the amount of use is not easy. 0.1 to 5% by weight is added, preferably in the range of 0.1 to 1% by weight, and the base paper may be made. This paper size applies to China National Standard i (CNS) A4 (210 X 297 is known) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 548366 A7 B7 V. Description of the invention () The original newsprint paper invented in this case, added as necessary As the filler, white carbon black, clay, stone boulder, talc, titanium oxide, carbonate, synthetic resin filler (salinized vinyl resin, polystyrene resin, urea-formaldehyde water resin, melamine resin, styrene ethyl) Ene / butadiene-based copolymers, such as Sukiki, etc.), and if it contains: polypropylene fluorene-based polymers, polyethylene ethanol-based polymers, cationized starch, urea / acetaldehyde water resin, melamine / fluorene Paper strength enhancer such as aldehyde water resin; salt of propylene fluorene / amino propylene propylene fluorene copolymer, cationic starch, polyethyleneimine, polyethylene oxide, propylene fluorene / sodium acrylate copolymer, etc. Yield upwards; sizing agent for rosin series, alkyl ketene dimer (AKD), fatty alkenyl succinic anhydride (ASA), petroleum sizing agent, neutral rosin rubber, etc .; Aluminum sulfate (sulfur Alumina), an ultraviolet preventing agent, an anti-fading agent additives can, furthermore, the physical properties of the newsprint base paper than the coefficient of friction, to the extent of ordinary newsprint tensile strength, tear strength, and other physical properties can be extended. The newsprint base paper invented in this case may be acid newsprint base paper, and neutral paper or test paper base paper may also be used. Also, the amount of newsprint paper is not limited, about 33 ~ 45g / m2 is enough. The lithographic printing newsprint of the present invention is obtained by coating, drying, and calendering a surface treatment agent containing a water-soluble polymer and a non-slip agent on a newsprint base paper. Examples of water-soluble polymers used in the present invention include starch, starch modified with enzymes, starch modified with thermochemical compounds, starch powder oxidized, esterified starch, starches such as etherified starch and cationized starch, polyvinyl alcohol, and complete alkali. Paper size is applicable to China National Standard (CNS) A4 (210 X 297 male |) ----; ----.----- ·· install --- (please read the precautions on the back of the paper first) Fill in this page) Order- 丨 548366 Α7 B7 V. Description of the invention (Polyvinyl alcohol, partially alkalized polyvinyl alcohol, carboxy-modified polyvinyl alcohol, silanol alcohol polyvinyl alcohol, cationic modified polyvinyl alcohol, terminal alkyl modified poly 2 = Polyvinyl alcohols such as alcohols, polypropylene resins such as polypropylene, cationic polypropylene, ionic polypropylene, and amphoteric polyacrylic acid, acrylic methyl cellulose, hydroxyethyl cellulose, formazan Cellulose and the like based on cellulose are used singly or as a mixture of two or more types. Among them, starch is preferred, and oxidized starch, etherified starch, and esterified starch are most preferred. ^ Used in the present invention Examples of anti-slip agents: colloidal dioxygen Shi Gui, Shaoxing gel, sodium silicate, synthetic resin particles (such as polybutyl acrylate, polymethyl methacrylate, etc.), Japanese Unexamined Patent Publication No. 52-103510, 5 (Meth) acrylic acid g resin, Japanese Unexamined Patent Publication No. 5 _ 107597, coarse-grained silica, colloidal silica, and soft adhesive composition, Japanese Unexamined Patent Publication No. 61-296198 Composition composed of colloidal silica and polyacrylic acid inducer, or cellulose inducer, stupid ethylene-butadiene copolymer latex and fine particles polystyrene and polyvinyl alkyl ether described in JP-A-62-110997 Composition of the composition, anti-shocking of (meth) acrylic acid vinegar / multifunctional (meth) acrylic acid vinegar copolymer composition disclosed in JP 62-133199, JP-A 61-688, and JP-A 83596 A composition containing fine silica powder, a pure compound, and a water-soluble cellulose inducer as described in the Gazette, a stupid substance-containing conductor described in JP-A-2-26997, and a tris (amyl) group ) Reaction of acrylic copolymer and grade 4 chemical reagent Anti-slip agent composed of reaction products, hulls of rice germplasms disclosed in JP-A-Hei _, and colloid-containing II described in JP-A-6-184991 (please read the precautions on the back before filling this page)- · 1 I III — I ^ · I I--II. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs and printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs and printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 548366 A7 B7 Paper coating composition, colloidal silicon dioxide and vinyl acetate vinyl latex described in JP-A No. 7-48800, anti-slip agent composed of colloidal silica and vinyl acetate vinyl latex, and silica particle and water-based resin latex described in JP-A No. 7-304999 as main components Anti-slip agent, a slip-resistant composition containing silica particles described in JP-A-7-316469, and a protective colloid as a cationic water-soluble polymer described in JP-A-7-82692, which is emulsified and polymerized from a specific water-soluble monomer Obtained anti-slip treatment agent, anti-slip agent for paper described in JP 9-279500, anti-slip agent for acrylic paper described in JP 9-291495, JP-A 10- The surface sizing agent described in Japanese Unexamined Patent Application Publication No. 11-1893, which contains an anionic sizing agent and a specific acrylic polymer as a main component, and is ion-complexed to form anti-slip properties. Coating composition, etc. These compositions can be used alone or as a mixture of two or more types. They are not necessarily ideal due to the easy formation of piling. Therefore, silica powder, calcium carbonate, clay, white carbon, and papermaking can also be used. Kaolin, titanium oxide and other fillers. The surface treatment agent of the present invention may also contain preservatives, defoamers, anti-adhesion agents, UV inhibitors, anti-fading agents, fluorescent whitening agents, viscosity stabilizers, etc., as long as they do not affect the invention of the present invention. Agent or surface sizing agent. The mixing ratio (weight ratio) of the water-soluble polymer and the anti-slip agent of the surface treatment agent of the present invention may be determined according to the quality required for the manufactured lithographic newsprint paper, and is not particularly limited, but if it is to be limited Based on water-soluble polymer: anti-slip agent = 100: 0.1 ~ 20. The paper size is applicable to China National Standard (CNS) A4 (210 X 297) | (Please read the note on the back? Matters before filling in this page)

548366 A7 B7 V. The description of the invention () is appropriate. The coating amount of the surface treatment agent of the present invention (that is, the total solid content of the water-soluble polymer and the anti-slip agent) should also be determined according to the quality of ice required for the manufactured lithographic newsprint paper, and is not particularly limited, and> It is appropriate to have about 0.1 to 1.5 g / m2 on both sides; when the coating amount is less than 0.1 lg / iri, the effect of the surface treatment agent cannot be fully exerted on the improvement of the surface strength or the improvement of the friction coefficient; On the other hand, when the coating amount is higher than 1.5 g / rri, the possibility of causing a sticking problem is increased. In addition, in the surface treatment agent of the present invention, if the water-soluble polymer is starch, the effect of strengthening the surface strength is enhanced. It seems that the coating amount of the surface treatment agent is about 0.3 to 1.2 g / m2. The device (coating machine) used for coating the surface treatment agent in the present invention is not particularly limited as long as it is an ordinary paper-making coating device. Examples include: a 2-roller laminator, a tablet-type meter conversion rubber chicken, Rod type meter conversion laminator, roll coating machine, rod coating machine, pneumatic blade coating machine and other devices; among these devices, the film transfer type coating machine representing the gate roller coating machine is ideal, and newsprint paper A gate roller coater (GRC) is common, and it is most ideal for use in the present invention. In the production of newsprint paper, the surface treatment agent is generally applied on a machine, and the coating speed is about the same as the papermaking speed of a general newsprint papermaking machine, in the range of 800 to 1800 m / min. In the invention, the newsprint paper for lithography is coated and dried with a surface treatment agent. In order to obtain a paper thickness and smoothness suitable for lithography, it needs to be calendered. The calender usually uses a hard nip calender, or The size of the soft paper is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 meals) ----: ----: ---- · install --- (Please read the precautions on the back before filling in this Page) 丨 丨 Order --------- Printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 548366 A7 B7 V. Description of the invention () Mass-calender (for example, Era of Pulp Technology Vol. 43, No. 1 (2000, p23, etc.). In consideration of the future weight reduction of newsprint paper, the lithographic newsprint paper invented in this case is ideally used with a soft nip calender. The conditions for the use of soft nip calendering should be based on the requirements. The quality of newsprint '(paper thickness, smoothness, etc.) is preferably in the range of temperature 30 ~ 15D ° C, linear pressure 20 ~ 150kN / m; if the color printing is suitable, the surface treatment agent of the present invention , Can be combined with soft clamping calendering. The paper thickness of the newsprint paper for the lithographic invention in this case must be maintained within the range of 50 // m and less than 85 // m. If the paper thickness is less than 50 // m, the paper on the rotary machine may be broken due to the reduced strength. The problem of lowering quality, such as delamination, etc., When the paper thickness is higher than 85 / zm, the rigidity is increased, and the workability of the turning section of the rotary machine is deteriorated. In this case, the dynamic friction coefficient of the lithographic newsprint paper must be maintained in the range of 0.45 to 0.62. When the dynamic friction coefficient is less than 0.45, there may be a problem of smooth paper flow and low printing tension. On the other hand, when the dynamic friction coefficient When it is higher than 0.62, there is a problem that the fluidity of the paper deteriorates. The color printing suitability of the newsprint for lithographic printing is invented in this case, because there is no appropriate evaluation method for color printing suitability, and it cannot be specifically limited, so long as the printing surface is actually good when the color printing machine is used for printing. The newsprint paper of the extender is coated, dried, and calendered with a surface treatment agent containing a water-soluble polymer and a non-slip agent, and the color paper is obtained. The size of the paper is applicable to China National Standard (CNS) A4 (210 X 297 male 1i). ) (Please read the notes on the back before filling out this page) Binding --------- Printed by the Consumers 'Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 548366 Printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Invention Note () Printing newsprint with excellent printability. The clear reason for the enhancement of color printability is still unknown. It is possible to form a moderate void structure in the paper with an extender, and then use a non-slip agent to impart particles with a moderate particle size to the surface of the paper to form a powerful ink. Adhesive paper layer structure. [Examples] Hereinafter, the present invention will be described with examples, but the present invention is not limited to the use thereof. Among them, if there are no particular restrictions on the parts and% in the examples, they represent weight parts and weight% respectively, and the addition rate of the extender means the ratio added to each pair of absolute pulp during papermaking, so it is not newsprint There is a ratio of component A in. The extender, water-soluble polymer and anti-slip agent used in the present invention are obtained by the following method. <Extender> A-1. Pentaerythritol monostearate (Exemplary Item of Patent No. 3041297) A-2: Glyceryl Stearate (Exemplary Item of Patent No. 3041297) A- 3. Succharose monoolate (Exemplary Description in Patent No. 3041297) A-4: Trade name KB-08W (Kao (share)) A-5 · Trade name KB-115 (Kao ( Co., Ltd.) <Water-soluble polymer> B 1 • Oxidation powder (brand name: sk-20, Japan Constouch (stock)) 0 # $ ^ T ^ NS) A4 size (210 X 297) 1-) ΙΊ --- Μ ------------ ^ --------- (Please read the notes on the back before filling this page)

548366 V. Description of the invention (manufactured by B) B-2: hydroxyethylated starch (trade name: pG_28〇, manufactured by penfold) <slip-resistant agent> C-1: styrene-based slip-resistant agent (trade name: Gang. ., Manufactured by Arakawa Chemical Co., Ltd.) · ~ C-2: Shigui stone-based anti-slip agent (trade name: Ns_603, somal (share)) Ci acrylic anti-slip agent (trade name: Η · 4_28〇, Misawaseramix (manufactured) ^ · Shi anti-m anti-slip agent (brand name: TunexE, Shiraishi Industry (stock) [Examples 1 to 4] 60 DIP (beating degree 180ml), TMp (packing degree 100ml) ) 304 NBKP (beating degree 600ml) 10 parts of the mixture after mixing and impregnating the pulp prepared by adding cation n powder (trade name: C 口 ΑΤΟ-302, Japan NSC) (Share system) 05%, rosin-based sizing agent (trade name: N-773, Arakawa Chemical Industries (stock)) 0.2% and extender are added according to Table 1 = addition rate, and alum sulfate After the paper was adjusted to 4.5, the paper was made on an experimental papermaking machine to obtain newsprint base paper; the front side of the newsprint base paper was using a Meiya roll (m eiya bar), as shown in Table 1, apply a surface treatment agent composed of a water-soluble polymer and a non-slip agent, and dry it to form a paper with a thickness of 50 / Z in and less than 85 # m, and then perform The calendering process produces lithographic newsprint paper. The obtained lithographic newsprint paper was evaluated as follows. The results are shown in Table 1. ------.----- ^ ---- ------------ (Please read the notes on the back before filling this page) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs

This paper is scaled by Guan Jiaxian (CNS) A4 specifications ⑵ 0 548366 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. Description of the invention (• Rice volume amount • Based on IS0536-1976. • Paper thickness: Based on IS0534-1988 (JIS P8118) as the standard. • Dynamic friction coefficient: JIS P 8147 as the standard. [Comparative Examples 1, 3 to 5] The front side of the newsprint base paper manufactured in Example 1 will not contain anti-slip agents. The surface treatment agent shown in Table 1 was coated. Except for this step, it was the same as in Examples 1 to 4. The lithographic newsprint paper was manufactured. The obtained lithographic newsprint paper was evaluated according to the above paper. The results are as follows: The results are shown in Table 1. [Comparative Example 2] During papermaking, in the experimental oriented paper machine, 3% of white carbon black was added to each pair of dry pulp. Except this step, it was the same as Comparative Example 1 to produce lithographic printing. Using newsprint, the obtained lithographic newsprint was evaluated based on the above-mentioned paper quality, and the results are shown in Table 1. [Comparative Example 6] During papermaking, no extender was added to the experimental alignment papermaking machine, except for this step All others are compared Example 丨 Same, the lithographic newsprint was manufactured, and the obtained lithographic newsprint was evaluated based on the above paper quality, and the results are shown in Table 1. IIII I--III ------ II ^ --- III I -(Please read the notes on the back before filling this page)

548366 V. Description of the invention (Table 1 Example 1 Example 2 Su Example 3 Component A Type Addition Rate (%) A-1

A-2 &quot; aT A-4

Component B B-1 Mixing ratio (B: C) Too: 100: ΐοο: 15 * Coating amount (single-sided, g / m2) 〇Γ34 Γ33 B-1 C-4 74 Comparative example 4 3-1 100 Comparative example 6 40.4 3-1 100: 0.26 40.5 As shown in Example 4 in the table, on a news base paper containing an extender, a surface treatment agent containing a water-soluble polymer and a non-slip agent is put into a cloth, dried, and then processed by calendering. After that, a quality of good newsprint paper with a thickness of 50 # m or more and less than 85 # „1 and a dynamic friction coefficient of 〇45 ~ 〇 was obtained. In contrast, on a newsprint base paper containing an extender, only A comparative example in which a water-soluble polymer-containing surface treatment agent is applied has a friction coefficient of less than G. 45 and is not suitable as a new paper for lithography. [Examples 5 to 8] DIP (beating degree 180ml) 50 The proportion of pulp, TMP (beating degree 10, NBKP (beating degree _ral) 10, Gp (beating degree _)) is mixed and impregnated into the prepared pulp, each pair of absolute pulp ° cationic starch ( Commodity name · Ca-3202, Japan NSC (shareholding system) plus paper size Applies to Chinese National Standard (CNS) A4 specifications (21〇X 297 public 1 548366 A7

548366 A7 B7 V. Description of the invention ([Example 9] 5 except that the calendering process is a hard fancy calendering process (5 =, roll coating temperature 6 (TC, line pressure 35Kn / m), others === ' For the manufacture of lithographic newsprint paper, the resulting lithographic printing paper was made of paper with the same items as in Examples 5 to 8-the evaluation results are shown in Table 2. [Comparative Examples 7 to 9]

I. Qiankou sewing machine coating _, except that it is coated with a surface treatment agent that does not contain anti-slip agent as shown in Table 2; the rest are the same as in Example 而, and a new lithographic printing paper is produced. The papers of the same items in Examples 5 to 8 were evaluated-= as shown in the new Table 2. [Comparative Example 10] Except that no extender was added, the lithographic printing ink was produced in the same manner as in Comparative Example 7. The obtained lithographic printing was evaluated on the paper of the same items as in Examples 5 to 8, and the results were measured using the original version. Paper size applies Chinese National Standard (CNS) A4 specification (210 X 2971 548366) V. Description of the invention (Table 2 Example 5 Implementation Example 6 Α-5 Α-5 Α-5 Β-1 Mixing ratio CB: C) 100: 7 Coating amount (single side, g / m2) Γ56

Rice mass (g / iri) 4M Ύ ^ ϊ ~ 8 3-1 Μ 40.4 75 Coefficient of dynamic friction 0758 Α-5 C-1 100 ： 7 Example 9 Comparative Example 7 Comparative Example 8 Comparative Example 9 Comparative Example 10 100 0.55 Pack As shown in Examples 5 to 9 of Table 2, on the base paper containing a paper-added sheet 'containing a water-soluble polymer and a non-slip agent, the surface treatment: using the calendering process for lithography; two: ~~. 62 的 品 f, and its color printing chick also shoots this, Comparative Examples 7 to 9 which are purely coated with a surface treatment agent containing only a water-soluble polymer on an article containing incremental news thief money: knife full ° .45, yes It is not suitable as lithographic newsprint I ;; color printing suitability is also slightly better; and the original two τ: _ molecular surface treatment agent that does not contain extender is coated 2 10 (common lithographic newsprint paper ), Its color printability is poor. This paper size applies to the Chinese National Standard (CNS) A4 specification (210 X 297 $). Printed by the Intellectual Property Corporation of the Ministry of Economic Affairs

Claims (1)

548366 Patent application for printing, which is based on the newsprint paper containing extenders. You, w 3 are coated with water / granular surface molecules and anti-slip agents. After drying and calendering, the resulting paper is 85 / zm. , And the dynamic friction coefficient is at G 45 ~ Use new paper. A 1.62_ Lithographic printing 2. The lithographic printing as described in item i of the patent application scope is characterized in that the calendering process refers to the high-temperature soft sandwich calendering place =. ,,, 3. If the first or second top self-use paper in the scope of the patent application, series a #, Jin Shuzhi's lithographic news I, is characterized by the water-soluble and / or starch derivatives of the surface treatment agent. The knife is a private melon _ «installed (please read the precautions on the back before filling out this page) Order the paper printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. You wrote) 'W ·-·· Application date? C, Ϋ, 彡. Case No. qoi ^ l ^ trf Category (H ^ f / {^ (The above columns are filled by this bureau) Α4 C4 548366 Ji Μ Ministry of Economic Affairs Printed by the Intellectual Property Co., Ltd. 4 Consumer Cooperatives || Patent Specification Invention I. Name New Chinese Offset Printing Newsprint English Name U) Takano Toshiyuki (2) Fujiwara Hideki Nationality I. Original I. Creation I. Residence Name of the prince, 5 Chome, No. 5 Chome, Mie-ku, Tokyo, Japan Name of the company's technical laboratory (name) Name of the paper company Co., Ltd. Nationality Name of the applicant 3. Residence, residence (office) of the applicant Oji Prince, Kita-ku, Tokyo, Tokyo, Japan 21 Chou, Kazuo Kazuo Kazuo Paper Size Applies to Chinese National Standard (CNS) A4 Specification (210 × 297 mm) Packing _ Line