JP2017170743A - Pressure-sensitive transfer correction tape - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pressure-sensitive transfer correction tape excellent in ink dryness upon rewriting on a correction coating layer in an aqueous ink or water-based gel ink by inviting neither changes in the conventional manufacturing process nor increases in manufacturing cost, the pressure-sensitive transfer correction tape having a pressure-sensitive transfer layer consisting of a correction coating layer and an adhesive layer laid sequentially on a sheet of paper or a plastic base material where release treatment is applied.SOLUTION: A pressure-sensitive transfer correction tape, which has a pressure-sensitive transfer layer at least consisting of a correction coating layer and an adhesive layer laid sequentially on one face of a release base material made of a sheet of paper or plastic film, is a pressure-sensitive transfer correction tape the correction coating layer of which has a hydroxyl group as a hydrophilic part and contains both-hydrophilic polymer having a hydrophobic part by 0.5-35 mass%. The correction coating layer is a coating layer configured by drying correction coating layer ink, and the coating layer contains an organic solvent, a pigment, an extender, a dispersant, a binder resin, and both-hydrophilic polymer.SELECTED DRAWING: None

Description

  The present invention relates to a pressure-sensitive transfer correction tape used for concealing and correcting characters and the like recorded on paper.

  Conventionally, when erasing and correcting things that cannot be erased with an eraser, such as writing lines with a writing instrument such as a ballpoint pen, fountain pen, or marking pen, typewriters, copy lines with a PPC copy, etc., there is generally a correction fluid and an automatic winding mechanism. Cassette type pressure-sensitive transfer correction tape is used. However, when such typographical errors are corrected with correction fluid, there are problems that it is difficult to rewrite and reprint the correction fluid because it takes a long time to dry, and it is difficult to smooth the correction area. Many pressure transfer correction tapes are used.

  In the pressure-sensitive transfer correction tape, the ink for forming the correction coating layer (hereinafter referred to as “correction coating layer ink”) is generally a solvent system, that is, an oily base, and the polymer contained in the correction coating layer is Many are lipophilic. Therefore, when rewritten on the correction coating layer with a writing instrument using water-based ink or water-based gel ink having high polarity and high surface tension mainly composed of water, the affinity between the high polarity ink and the correction coating layer is high. The drying of the ink is slow because it is scarce and the ink hardly penetrates the correction coating layer. As a result, rewritten characters or the like may be blurred when scratched by paper or a finger.

  On the other hand, in a pressure-sensitive transfer correction tape coated with a solvent-free water-based correction coating layer ink, the polymer contained in the correction coating layer is mainly a hydrophilic polymer or a surface active agent that imparts hydrophilicity. A polymer emulsion containing the agent is used. The pressure-sensitive transfer correction tape based on the water-based correction coating layer ink has high affinity with water-based ink or water-based gel ink, so the ink drying property is excellent when rewritten with a writing tool mainly composed of water-based ink or water-based gel ink. ing.

  However, although the development of solvent-free water-based modified coating layer inks is underway, paper and plastics that have been subjected to mold release treatment at the time of manufacture when compared to conventional solvent-based modified coating layer inks When the correction coating layer ink is applied to the substrate, the ink is repelled and difficult to apply uniformly, or the ink base is water-based, resulting in poor drying efficiency compared to the solvent system. . In addition, in order to produce a pressure-sensitive transfer correction tape using a water-based correction coating layer ink, the coating process of the correction coating layer ink needs to be a process suitable for the water-based ink. There is also a problem that the manufacturing cost of the pressure-sensitive transfer correction tape using the mold ink needs to be greatly changed, resulting in an increase in manufacturing cost. Therefore, it is a pressure-sensitive transfer correction tape using an oil-based correction coating layer ink that does not require a change in equipment, etc., and has excellent drying properties when rewritten with water-based ink or water-based gel ink. Is required.

Patent Document 1 mentions the drying property when the oil-based correction coating layer is rewritten with a water-based ink ballpoint pen or a water-based gel ink ballpoint pen, bleeding and dirt immediately after writing, and as a binder in the correction coating layer. A pressure-sensitive transfer correction tape having an oil-based correction coating layer ink containing 1 to 15% by mass of a carboxyl group-containing polymer having an acid value of 30 mgKOH / g or more is disclosed.
However, when the pressure-sensitive transfer correction tape disclosed in Patent Document 1 is rewritten with water-based ink or water-based gel ink, it has been found that the time until these inks are dried is long and the drying property is not yet sufficient. .

  Patent Document 2 discloses a pressure-sensitive transfer correction tape having an oil-based correction coating layer ink, and by adding silica having a large oil absorption amount of 280 ml / 100 g or more as a filler to the correction coating layer. This improves the ink absorbency of the ink, and prevents the rewritten area from spreading when touching the rewritten area by hand or when the paper is rubbed over and over. It is disclosed. However, the pressure-sensitive transfer correction tape disclosed in Patent Document 2 still does not have sufficient drying properties when rewritten with water-based ink or water-based gel ink, as in Patent Document 1.

  Patent Documents 3 and 4 disclose a structure in which at least one layer such as an ink receiving layer is further provided in addition to the correction coating layer and the adhesive layer as the structure of the pressure-sensitive transfer correction tape. In these pressure-sensitive transfer correction tapes, a layer such as an ink-receiving layer is provided on the surface of the correction coating layer after transfer, so that drying properties are improved by quickly absorbing water-based ink or water-based gel ink such as writing instruments. Yes. However, in this configuration, it is necessary to provide three or more layers, which necessitates an increase in the materials used and the manufacturing process, leading to a complicated manufacturing process and an increase in cost. Further, in Patent Document 4, although the ink receiving layer is formed by cohesive failure of the release layer provided between the base material (support) and the correction coating layer, it is difficult to control to stably cause cohesive failure. There is a problem.

JP 2011-126241 A JP 2013-208898 A JP 2008-221556 A JP 2012-000938 A

  The present invention is a pressure-sensitive transfer correction having a pressure-sensitive transfer layer in which at least a correction coating layer and an adhesive layer are sequentially laminated on a paper or plastic substrate (hereinafter referred to as a peeling substrate) that has been subjected to a release treatment. Provided is a pressure-sensitive transfer correction tape that is excellent in the drying property of ink when rewritten on a correction coating layer with a water-based ink or a water-based gel ink without changing the conventional manufacturing process or increasing the manufacturing cost. For the purpose.

  As a result of intensive studies to solve the above problems, the present inventors have incorporated an amphiphilic polymer into a modified coating layer ink containing an organic solvent, a pigment, a dispersant, etc. The inventors have found that a modified coating layer having excellent ink drying properties when rewritten with a writing instrument using gel ink is formed, and the present invention has been achieved.

  That is, the present invention is as follows.

(1) A pressure-sensitive transfer correction tape having a pressure-sensitive transfer layer in which at least a correction coating layer and an adhesive layer are sequentially laminated on one side of a release substrate made of paper or a plastic film, the correction coating A pressure-sensitive transfer correction tape, wherein the layer contains an amphiphilic polymer having a hydroxyl group as a hydrophilic part and a hydrophobic part.
(2) The pressure-sensitive transfer correction tape according to (1), wherein the amphiphilic polymer is a polymer soluble in an organic solvent having a solubility parameter (SP value) of 11.0 to 15.0.
(3) The pressure-sensitive transfer correction tape according to the above (1) or (2), wherein the amphiphilic polymer is polyvinyl alcohol.
(4) The pressure-sensitive transfer correction tape according to (3) above, wherein the polyvinyl alcohol has a saponification degree of 5 to 45 mol% and a polymerization degree of 170 to 1600 determined in accordance with JIS K 6726-1994.
(5) The pressure-sensitive transfer correction tape according to (1) above, wherein the amphiphilic polymer is a polymer soluble in an organic solvent having a solubility parameter (SP value) of 8.5 to 10.0.
(6) The feeling according to the above (1) or (5), wherein the amphiphilic polymer is a polyether polyol having a hydroxyl value of 30 to 550 mgKOH / g or a polyvinyl acetal having a hydroxyl group content of 15 to 40 mol%. Pressure transfer correction tape.
(7) The pressure-sensitive transfer correction tape according to the above (6), wherein the polyether polyol is a propylene oxide adduct or an ethylene oxide / propylene oxide adduct of glycerin or polypropylene glycol.
(8) The pressure-sensitive transfer correction tape according to any one of (1) to (7), wherein the amphiphilic polymer has a hydroxyl group content of 0.5 to 10 mmol / g.
(9) The pressure-sensitive transfer correction tape according to any one of (1) to (8), wherein the amphiphilic polymer is contained in the correction coating layer in an amount of 0.5 to 35% by mass.
(10) The pressure-sensitive transfer according to any one of (1) to (9), wherein the modified coating layer further contains a binder resin, and the binder resin is at least one selected from synthetic rubber and elastomer. Correction tape.
(11) The correction coating layer is a coating layer obtained by drying the correction coating layer ink,
The pressure-sensitive transfer correction tape according to any one of (1) to (10), wherein the correction coating layer ink includes an organic solvent, a pigment, an extender pigment, a dispersant, a binder resin, and an amphiphilic polymer.

  According to the present invention, when a water-based ballpoint pen, a water-based gel ink ballpoint pen, or the like is used to rewrite the correction coating layer with a writing tool using water-based ink or water-based gel ink, the water-based ink or water-based gel ink dries quickly, and the feeling of excellent drying properties. A pressure transfer correction tape can be provided. In addition, since it can be manufactured in the same manner as a pressure-sensitive transfer correction tape using a conventional oil-based correction coating layer ink, it does not cause problems such as a change in the manufacturing process and an increase in manufacturing cost, and is excellent in economic efficiency. .

Hereinafter, the present invention will be described in detail.
The pressure-sensitive transfer correction tape of the present invention is a pressure-sensitive transfer correction tape having a pressure-sensitive transfer layer in which at least a correction coating layer and an adhesive layer are sequentially laminated on one side of a release substrate made of paper or a plastic film. The modified coating layer contains an amphiphilic polymer having a hydroxyl group as a hydrophilic part and a hydrophobic part.

  Since the amphiphilic polymer in the present invention has a hydroxyl group as a hydrophilic portion, when these inks are rewritten with a water-based ballpoint pen or a water-based gel ink ballpoint pen on the correction coating layer of the pressure-sensitive transfer correction tape, Quickly absorbed by the modified coating layer. As a result, it is possible to form a modified coating layer that does not cause bleeding even when rubbed.

  The amphiphilic polymer used in the present invention is one having an affinity for an organic solvent such as toluene generally used as a solvent when preparing an oil-based modified coating layer ink. Therefore, the dispersibility of pigments and the like, and the coating property of the modified coating layer ink on the peeling substrate are excellent, and a uniform coating film can be formed.

The amphiphilic polymer is preferably one that dissolves or disperses well in one or more mixed solvents used in preparing the correction coating layer ink, and more preferably one that dissolves. Examples of such amphiphilic polymers that have both affinity for water and affinity for organic solvents such as toluene include the following polymers (A) and polymers (B) having different properties.
(A) An organic solvent having a hydroxyl group as a hydrophilic part and a hydrophobic part and having a solubility parameter (SP value) of 11.0 to 15.0, preferably an SP value of 11.5 to 14.5 Soluble amphiphilic polymer.
(B) An organic solvent having a hydroxyl group as a hydrophilic part and a hydrophobic part, and having a solubility parameter (SP value) of 8.5 to 10.0, preferably an SP value of 8.5 to 9.5. Soluble amphiphilic polymer.

Specific examples of the amphiphilic polymer include a polymer having a hydroxyl group as a hydrophilic part in the molecule and an alkyl group, a phenyl group or the like as a hydrophobic part.
Examples of the polymer (A) include polyvinyl alcohol, cellulose derivatives, and copolymers of hydrophilic monomers and hydrophobic monomers.
Examples of the polymer (B) include polyvinyl acetal which is an acetalized product of polyvinyl alcohol, polyether polyol having a polyoxypropylene group, polyether polyol having a polyoxyethylene group and a polyoxypropylene group, phenolimide, and a cellulose derivative. And a copolymer of a hydrophilic monomer and a hydrophobic monomer.

Examples of the cellulose derivative include compounds obtained by esterifying a part of hydroxyl groups of hydroxypropylcellulose, hydroxyethylcellulose, and methylcellulose.
As a copolymer of a hydrophilic monomer and a hydrophobic monomer, as a hydrophilic monomer, 2-hydroxyethyl (meth) acrylate, polyoxyethylene (meth) acrylate, (N-methylolacrylamide, etc.) is used, and the hydrophobic monomer (Meth) acrylates such as methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, styrene, vinyl chloride, vinyl acetate, etc. And a copolymer obtained by random copolymerization or block copolymerization of these hydrophilic monomer and hydrophobic monomer at an appropriate ratio.

  Among the above-mentioned amphiphilic polymers, polyvinyl alcohol, polyvinyl acetal, and polyether polyol are preferable, and the SP value is 11.0 to 15.0 by adjusting the amount of hydroxyl group present in the molecule and the polymer molecular weight, respectively. Or it becomes an amphiphilic polymer soluble in an organic solvent having an SP value of 8.5 to 10.0.

As the polyvinyl alcohol, polyvinyl alcohol having a saponification degree of 5 to 45 mol% and a polymerization degree of 170 to 1600 determined in accordance with JIS K 6726-1994 is preferable. The saponification degree of polyvinyl alcohol is more preferably 15 to 45 mol%, particularly preferably 30 to 42 mol%. The polymerization degree of polyvinyl alcohol is more preferably 200 to 1000, and particularly preferably 200 to 600.
If the degree of saponification of polyvinyl alcohol is 5 mol% or more, a sufficient number of hydroxyl groups are contained in the molecule in terms of affinity for water, and when rewritten with water-based ink or water-based gel ink, The water-based ink or the water-based gel ink is easily absorbed by the correction coating layer, so that the drying property is improved. On the other hand, if the degree of saponification is less than 45 mol%, the molecule contains a sufficient number of acetyl groups in terms of affinity for organic solvents and separates or settles in the modified coating layer ink. And the coating of the correction coating layer ink on the release substrate is not hindered.
Further, if the degree of polymerization of polyvinyl alcohol is 170 or more, the coating strength of the correction coating layer can be obtained, so that there is no possibility that the correction coating layer is cut when the pressure-sensitive transfer correction tape is used. On the other hand, if the degree of polymerization is 1600 or less, the modified coating layer ink has good solubility or dispersibility in an organic solvent and does not cause separation or sedimentation, which hinders the coating of the modified coating layer ink on the release substrate. Never come.

  As the polyvinyl alcohol, commercially available products can be used. For example, JMR-8L, JMR-10L, JMR-20L, JMR-150L (above, manufactured by Nihon Ventures & Poval Co., Ltd.), Gohsenx LL-920, LL- 940 (manufactured by Nippon Synthetic Chemical Industry Co., Ltd.), LM-10HD, LM-20, LM-25 (manufactured by Kuraray Co., Ltd.) and the like.

  As the polyether polyol, a compound having a propylene oxide group as a hydrophobic portion is preferable. Examples thereof include an ethylene oxide / propylene oxide adduct of alcohol, a propylene oxide adduct of alcohol, a propylene oxide adduct of polyethylene glycol, an ethylene oxide adduct of polypropylene glycol, and a random block copolymer of ethylene oxide and propylene oxide. Among these polyether polyols, propylene oxide adducts or ethylene oxide / propylene oxide adducts of glycerin or polypropylene glycol are preferable. The ethylene oxide / propylene oxide may be a random adduct or a block adduct.

  The hydroxyl value of the polyether polyol is preferably 30 to 550 mgKOH / g, more preferably 30 to 200 mgKOH / g, and particularly preferably 30 to 100 mgKOH / g. If the polyether polyol has a hydroxyl value of 30 mgKOH / g or more and 550 mgKOH / g or less, the rewriting ink drying property, the modified coating layer ink stability, and the modified coating layer uniformity are the same as in the case of the polyvinyl alcohol. Will improve.

  As the polyether polyol, commercially available products can be used. For example, Adeka Polyether P-3000, PR-3007, G3000B, GR-3308, G-300 (above, manufactured by ADEKA Corporation), High Flex 750, ND637, 641, DK polyol 3805, 3810 (above, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), Emulster PF-701, EL-512, EL-551 (above, manufactured by Asahi Glass Co., Ltd.), etc. Can be mentioned.

  As the polyvinyl acetal, a polyvinyl acetal having a hydroxyl group content of 15 to 40 mol% is suitable. More preferably, it is 20-35 mol%, Most preferably, it is 20-30 mol%. If the hydroxyl group content of the polyvinyl acetal is 15 mol% or more and 40 mol% or less, the rewriting ink drying property, the correction coating layer ink stability, and the correction coating layer uniformity are the same as in the case of the polyvinyl alcohol. improves.

  Examples of the polyvinyl acetal include polyvinyl formal and polyvinyl butyral. Polyvinyl butyral is preferable from the viewpoint of excellent flexibility of the coating film. Moreover, a commercial item can be used for polyvinyl acetal, for example, eslek BL-10, the same BL-5, the same BL-S, and the same BL-SH (above, Sekisui Chemical Co., Ltd. make).

As described above, all of the polyvinyl alcohol, polyether polyol, and polyacetal used as the amphiphilic polymer have a hydrophilic hydroxyl group, and the hydroxyl group has an affinity for water by interaction such as hydrogen bonding. Therefore, when re-written with water-based ink or water-based gel ink, it becomes possible to quickly absorb the water in these inks into the modified coating layer, improving the dryness of the re-written water-based ink or water-based gel ink. To do. The amphiphilic polymer preferably has a hydroxyl group content of 0.5 to 10 mmol / g.
In the present invention, the amphiphilic polymer is preferably contained in the modified coating layer in an amount of 0.5 to 35% by mass, more preferably 0.5 to 20% by mass, and further preferably 1 to 8% by mass. is there. In the case of polyvinyl alcohol, it is particularly preferable that 0.5 to 5% by mass is contained in the modified coating layer.
If the amphiphilic polymer is contained in an amount of 0.5% by mass or more, when rewritten with a water-based ink or a water-based gel ink, water contained in these inks can be sufficiently absorbed, and the rewritten water-based ink or The drying property of the aqueous gel ink is improved. Further, when the amount of the amphiphilic polymer is 35% by mass or less, it does not separate or settle in the correction coating layer ink, and does not hinder the application of the correction coating layer ink to the peeling substrate. .

  Polyacetals and polyether polyols also have ether bonds and acetal bonds in addition to hydroxyl groups in the molecule, and the oxygen atoms of these ether bonds and acetal bonds have an affinity for water due to hydrogen bonds and the like. It is presumed that it contributes to exerting the sex. Therefore, in the case of polyether polyol, it is preferably contained in the correction coating layer in an amount of 1 to 8% by mass, particularly preferably 3 to 8% by mass, and in the case of polyvinyl acetal, particularly preferably 1 to 3% by mass. % By mass.

  The correction coating layer of the pressure-sensitive transfer correction tape of the present invention includes a pigment, an extender pigment, a dispersant, a binder resin, and an amphiphilic polymer. Known compounds can be used as the pigment, extender pigment, dispersant, and binder resin.

The binder resin is used as a binder for pigments and extender pigments. For example, styrene-butadiene rubber (SBR), chloroprene rubber, polyisobutylene rubber, acrylonitrile-butadiene rubber (NBR), styrene-ethylene-butylene-styrene rubber (SEBS), styrene-butylene-styrene block copolymer (SBS), Styrene-isoprene-styrene block copolymer (SIS), synthetic rubber and elastomer such as urethane rubber, poly (meth) acrylate resin, polyester resin, ethylene-vinyl acetate copolymer resin, styrene-vinyl acetate copolymer Resin, saturated or unsaturated alicyclic hydrocarbon resin, rosin, rosin ester, terpene resin, phenol resin, xylene resin, chroman resin, ketone resin, etc., and combinations of one or more selected from these Can be used Kill.
Among them, the use of synthetic rubber or elastomer is preferable because of its high elongation rate and good flexibility of the modified coating layer, and in particular, styrene-butadiene rubber (SBR), styrene-ethylene-butylene-styrene rubber (SEBS). ) Or at least one selected from styrene-butylene-styrene block copolymers (SBS).

  As the pigment, a high hiding white pigment such as titanium dioxide is preferable. As the titanium dioxide, any of a rutile type and an anatase type showing high concealability can be used. Specifically, Titanics JR-300, JR-600A, JR-801 (above, manufactured by Teika Co., Ltd.), Taipure R-706, R-900, R-901, R-931 (and above) , DuPont Japan Limited), Tytone SR-1, R-310, R-650, R-3L, A-110, A-150, R-5N (above, Sakai Chemical Industry) Co., Ltd.), Type R-550, R-580, R-615, R-630, R-830, R-930, A-100, A-220, CR-58 ( Above, manufactured by Ishihara Sangyo Co., Ltd.), Kronos KR-310, KR-380, KR-480, KA-10, KA-20, KA-30 (above, manufactured by Titanium Industry Co., Ltd.), Bayer Titanium R-FD-1 and R-FD-2 R-FB-1, R-FB-3, R-KB-3, R-CK-20 (manufactured by Bayer AG, Germany) and the like, and these may be used alone or in combination of two or more. Can be used.

  As extender pigments, silica powder, calcium carbonate, aluminum silicate, aluminosilicate, magnesium carbonate, talc, clay and the like can be used alone or in admixture of two or more. Specifically, as silica powder, GASIL silica HP560, HP880, UV55c, HP230, 23F, HP270 (above, manufactured by Wilber Ellis Co., Ltd.), MIZUKASIL P-803, P-50, P -73, P-78F, P-707, P-70 (above, made by Mizusawa Chemical Co., Ltd.), Sirisia H-122, H-33, H-53 (above, AGC S-Tech Co., Ltd.) Manufactured) and the like. Examples of the aluminum silicate include Kyoward 700 (manufactured by Kyowa Chemical Industry Co., Ltd.). Examples of the aluminosilicate include aluminum silicate P-820 and P-820A (manufactured by Degussa, Germany). Examples of the magnesium carbonate include light magnesium carbonate (manufactured by Kyowa Chemical Industry Co., Ltd.), magnesium carbonate TT (manufactured by Naikai Shigyo Co., Ltd.), and the like.

  The total amount of the pigment and extender pigment is preferably 60 to 85% by mass in the correction coating layer, and if it is 60% by mass or more, sufficient concealing property can be imparted to the correction coating layer, and 85% by mass. If it is below, the coating film formability of the modified coating layer will be good. The pigment is preferably contained in the corrected coating layer in an amount of 40% by mass or more, more preferably 50 to 80% by mass. If the pigment is 40% by mass or more, sufficient concealability can be imparted to the modified coating layer, and if it is 80% by mass or less, the surface of the modified coating layer becomes smooth, and is sequentially laminated on the release substrate. There is no possibility of causing a blocking phenomenon in which the corrected covering layer and the adhesive layer transferred to the back surface of the release substrate.

  Dispersants (pigment dispersants) improve the dispersibility of pigments such as titanium dioxide and extender pigments. Depending on the type of pigment and extender pigment used, known polymer compounds and surfactants are selected. Can be used. The surfactant used as the dispersant may be nonionic, anionic or cationic. For example, sorbitan fatty acid ester, glycerin fatty acid ester, decaglycerin fatty acid ester, polyglycerin fatty acid ester, propylene glycol fatty acid ester, pentaerythritol fatty acid ester, polyoxyethylene sorbitol fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyethylene glycol fatty acid ester, poly Nonionic surfactants such as oxyethylene alkyl ether and polyoxyethylene alkyl nonylphenol; anionic surfactants such as alkyl sulfate, polyoxyalkyl ether acetate and polyoxyalkyl ether phosphate; alkylammonium salt and alkylbenzyl And cationic surfactants such as ammonium salts.

  Furthermore, if necessary, rust preventives such as benzotriazole and ethylenediaminetetraacetate, wetting agents such as urea and ethyleneurea, preservatives such as benzothiazoline and omadin, antifoaming agents such as silicone and acrylic , Additives such as leveling agents such as fluorosurfactants, inorganic pigments and organic pigments such as carbon black, iron oxide, cobalt blue, ultramarine blue, chromium green, chromium oxide, inorganic fluorescent pigments, organic fluorescent pigments, colored resins Colorants such as powder, colored resin spheres and processed pigments can be appropriately selected and used as long as the object of the present invention is not impaired.

  The correction coating layer is formed by applying the correction coating layer ink to one side of the release substrate and drying it. The modified coating layer ink comprises a solution obtained by dissolving an amphiphilic polymer in an organic solvent having an SP value of 11.0 to 15.0 or an SP value of 8.5 to 10.0, and an SP value of 8.5 to 10. It is preferable to prepare a mixture of 0 organic solvent, pigment, extender pigment, dispersant, binder resin, and other various additives that are added as desired in a predetermined ratio. As a preparation method, a disperser such as a disperser, a sand mill, or a bead mill may be used. The dispersant, binder resin, and various additives may be dissolved in an organic solvent together with the amphiphilic polymer.

  Examples of the organic solvent having an SP value of 8.5 to 10.0 include benzene, toluene, xylene, methyl ethyl ketone, ethyl acetate, cyclohexanone, and acetone. Examples of the organic solvent having an SP value of 11.0 to 15.0 include methanol, ethanol, isopropyl alcohol, and the like. These organic solvents can be used alone or in combination of two or more.

  As the peeling substrate constituting the pressure-sensitive transfer correction tape of the present invention, a plastic film or paper having a bending rigidity suitable for a transfer tool having an automatic winding mechanism is preferable. Examples of the plastic film include polyester films such as polyethylene terephthalate and polyolefin films such as polyethylene and polypropylene. The thickness of the release substrate is preferably 3 to 30 μm, and a release layer such as a silicone resin in which a silicone resin, an inorganic pigment or an organic pigment is dispersed is formed on one or both sides of the release substrate as necessary. Yes.

  The pressure-sensitive transfer correction tape of the present invention is formed by sequentially applying and drying the correction coating layer ink and the pressure-sensitive adhesive on one side of the release substrate by a usual method. The thickness of the correction coating layer preferably has a thickness of 10 to 30 μm after drying in order to ensure the concealability when the drawn line or drawing is corrected. The ratio of the thickness of the release substrate and the modified coating layer is not particularly limited, but generally, the ratio of the thickness of the release substrate to the thickness of the modified coating layer is 1: 0.4 to 1: 4.2. It is better to adjust to the range.

  The pressure-sensitive adhesive layer formed on the correction coating layer is formed by applying and drying a pressure-sensitive adhesive by a conventionally known method. As the pressure-sensitive adhesive, known ones can be used, and examples thereof include acrylic resin-based, rosin-based, rubber-based, and vinyl-based pressure-sensitive adhesives. These pressure-sensitive adhesives can be either solvent type or aqueous type, but resin emulsion type is preferable, and acrylic resin emulsion type pressure-sensitive adhesive is particularly preferable. The thickness of the adhesive layer is preferably about 0.3 to 5 μm after drying.

  EXAMPLES Hereinafter, although an Example demonstrates this invention further more concretely, this invention is not limited only to a following example.

(Examples 1-8 and Comparative Example 1)
As the amphiphilic polymer, polyvinyl alcohols having different saponification degrees and polymerization degrees shown in Table 1 were used. An amphiphilic polymer is dissolved in an organic solvent (isopropyl alcohol: 11.5) having an SP value of 11.0 to 15.0, and an organic solvent (toluene: 8.8) having an SP value of 8.5 to 10.0 is dispersed. Agent and SBR resin (binder resin) are mixed and heated to dissolve the resin, then the titanium base and extender pigment are added, stirred, and the mill base dispersed with a disperser is further dispersed with a bead mill. A modified coating layer ink (coating solution) was prepared.

  The prepared coating solution was coated on a release substrate made of a polyethylene terephthalate film having a thickness of 12 μm and dried by an applicator so that the thickness after drying was 20 to 30 μm to form a modified coating layer. . The coating state of the formed correction coating layer was visually observed to evaluate the uniformity of the correction coating layer.

  After the evaluation is completed, the pressure-sensitive transfer correction tape is obtained by applying and drying an acrylic emulsion adhesive on the correction coating layer using a bar coater so that the thickness after drying is 0.5 to 0.8 μm. It was.

  The obtained pressure-sensitive transfer correction tape was cut into small rolls, wound into a roll having a width of 5 mm and a length of 10 m, and loaded into a commercially available pressure-sensitive transfer correction tape cassette (CT-CC5, manufactured by Dragonfly Pencil Co., Ltd.). Transfer the pressure-sensitive transfer correction tape to the PPC paper, write on the correction coating layer using a water-based ballpoint pen and water-based gel ink ballpoint pen, and after 3 seconds, rub the surface of the writing line with an eraser to determine how long the writing line has extended. Measurement was made to evaluate the drying properties of the water-based ink and the water-based gel ink.

<Evaluation method>
(1) Stability of coating solution The obtained modified coating layer ink (coating solution) was allowed to stand for 5 minutes, the state was visually observed, and evaluated according to the following criteria.
○: The components of the coating liquid did not separate or settle.
X: The component of the coating liquid separated or settled.

(2) Uniformity of the correction coating layer The state of the obtained correction coating layer was visually observed and evaluated according to the following criteria.
○: Cracks and coating unevenness of the modified coating layer are less than 20% of the area.
(Triangle | delta): The crack of a correction coating layer and coating unevenness are 20 to less than 50% in an area.
X: Cracks and coating unevenness of the correction coating layer are 50% or more of the area.
−: The coating liquid was not used or evaluation was not possible in a corresponding state.
(Ii) ○ and Δ are areas suitable for practical use.

(3) Rewriting ink dryability (water-based ink)
Transfer the pressure-sensitive transfer correction tape to PPC paper and write on the correction coating layer with a water-based ballpoint pen (uni-ball eye, ball diameter 0.5 mm, ink color / black, manufactured by Mitsubishi Pencil Co., Ltd.) for 3 seconds. Later, the surface of the writing line was rubbed with an eraser, the length of the writing line was measured, and the drying property was evaluated according to the following criteria.
○: The extension length of the writing line is less than 5 mm.
(Triangle | delta): The elongation length of a writing line is 5 mm or more and less than 10 mm.
X: The extension length of a writing line is 10 mm or more.
-: The film was not formed or could not be evaluated in a corresponding state.
(Ii) ○ and Δ are areas suitable for practical use.

(4) Rewriting ink dryability (to water-based gel ink)
Transfer the pressure-sensitive transfer correction tape to PPC paper and write on the correction coating layer using a water-based gel ink ballpoint pen (G-2, ball diameter 0.7 mm, ink color / black, manufactured by Pilot Corporation) for 3 seconds. Later, the surface of the writing line was rubbed with an eraser, the length of the writing line was measured, and the drying property was evaluated according to the same criteria as in (3).

  The composition of the prepared coating solution (unit: parts by weight, the same applies hereinafter) and the evaluation results are shown in Table 2.

  From the results in Table 2, by adding polyvinyl alcohol having a saponification degree of 5 to 45 mol% and a polymerization degree of 170 to 1600 as an amphiphilic polymer, a uniform coating film was obtained. It can be seen that a pressure-sensitive transfer correction tape having a corrected coating layer and having excellent drying properties when rewritten with water-based ink or water-based gel ink is obtained.

(Examples 9 to 13, Comparative Example 2)
After adding the polyether polyol, dispersant, and binder resin having the properties shown in Table 3 to an organic solvent (toluene) having an SP value of 8.5 to 10.0, heating to dissolve the resin, and A mill base dispersed with a disperser after adding titanium and extender pigment was further dispersed with a bead mill to prepare a modified coating layer ink (coating liquid). In the same manner as in Example 1, a pressure-sensitive transfer correction tape was prepared. The evaluation results are shown in Table 4.

  From the results shown in Table 4, a pressure-sensitive adhesive with excellent drying characteristics when a polyether coating is used as the amphiphilic polymer to form a modified coating layer having a uniform coating film and re-written with water-based ink and water-based gel ink. It can be seen that a transfer correction tape is obtained.

(Examples 14 to 17)
A coating solution was prepared and a pressure-sensitive transfer correction tape was prepared in the same manner as in Example 9 except that polyvinyl butyral having the properties shown in Table 5 was used as the amphiphilic polymer. The evaluation results are shown in Table 6.

  From the results shown in Table 6, a pressure-sensitive transfer correction tape in which a modified coating layer having a uniform coating film was formed by using polyvinyl butyral as the amphiphilic polymer and the drying property when rewritten with water-based ink was improved. It can be seen that

(Comparative Examples 3-5)
A coating solution was prepared and a pressure-sensitive transfer correction tape was prepared and corrected in the same manner as in Example 1 except that only the binder resin shown in Table 7 was used without using the amphiphilic polymer of the present invention. The uniformity and drying properties of the coating layer were evaluated. Table 7 shows the coating solution composition and the evaluation results of the uniformity and drying property of the modified coating layer.

  From Table 7, it can be seen that the modified coating layer formed from the coating solution using the carboxylic acid polymer as the binder resin is excellent in the uniformity of the modified coating layer but inferior in drying property.

Claims (11)

  A pressure-sensitive transfer correction tape having a pressure-sensitive transfer layer in which at least a correction coating layer and an adhesive layer are sequentially laminated on one side of a release substrate made of paper or a plastic film, the correction coating layer, A pressure-sensitive transfer correction tape comprising an amphiphilic polymer having a hydroxyl group as a hydrophilic part and a hydrophobic part.   The pressure-sensitive transfer correction tape according to claim 1, wherein the amphiphilic polymer is a polymer soluble in an organic solvent having a solubility parameter (SP value) of 11.0 to 15.0.   The pressure-sensitive transfer correction tape according to claim 1 or 2, wherein the amphiphilic polymer is polyvinyl alcohol.   The pressure-sensitive transfer correction tape according to claim 3, wherein the polyvinyl alcohol has a saponification degree of 5 to 45 mol% and a polymerization degree of 170 to 1600 determined in accordance with JIS K 6726-1994.   The pressure-sensitive transfer correction tape according to claim 1, wherein the amphiphilic polymer is a polymer soluble in an organic solvent having a solubility parameter (SP value) of 8.5 to 10.0.   The pressure-sensitive transfer correction tape according to claim 1 or 5, wherein the amphiphilic polymer is a polyether polyol having a hydroxyl value of 30 to 550 mgKOH / g or a polyvinyl acetal having a hydroxyl group content of 15 to 40 mol%.   The pressure-sensitive transfer correction tape according to claim 6, wherein the polyether polyol is a propylene oxide adduct or an ethylene oxide / propylene oxide adduct of glycerin or polypropylene glycol.   The pressure-sensitive transfer correction tape according to any one of claims 1 to 7, wherein the amphiphilic polymer has a hydroxyl group content of 0.5 to 10 mmol / g.   The pressure-sensitive transfer correction tape according to any one of claims 1 to 8, wherein the amphiphilic polymer is contained in the correction coating layer in an amount of 0.5 to 35% by mass.   The pressure-sensitive transfer correction tape according to any one of claims 1 to 9, wherein the correction coating layer further contains a binder resin, and the binder resin is at least one selected from a synthetic rubber and an elastomer. The correction coating layer is a coating layer obtained by drying the correction coating layer ink.
The pressure-sensitive transfer correction tape according to claim 1, wherein the correction coating layer ink contains an organic solvent, a pigment, an extender pigment, a dispersant, a binder resin, and an amphiphilic polymer.