Base material for transfer printing and method for producing polyester-based fiber product using same

Abstract

To provide a base material for transfer printing which has good color developability and excellent level dyeability and can suppress bleeding in transfer printing using sublimation type or non-sublimation type disperse dye ink.SOLUTION: The transfer-printing base material according to the present disclosure includes a base material and a sizing agent layer applied to the base material. The sizing agent layer contains a hydrolyzed starch and a nonionic surfactant having an HLB ≤ 12. The hydrolyzed starch is one or both of enzyme-modified dextrin and roasted dextrin. The nonionic surfactant is at least one of compounds represented by general formula (A): R1 - O - (A1O) n - R2, general formula (B): R3 - O - (A2O) m - R4, and general formula (C): X - [O - (A3O) p - R5] q.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present application discloses a substrate for transfer printing and a method for producing a polyester fiber product using the same. [Background technology]

[0002] Methods for transferring disperse dye designs to textile materials, particularly polyester textile materials, include plate-making printing methods such as screen printing and rotary screen printing, which use disperse dye color pastes, and direct inkjet printing, which uses non-sublimation disperse dye inks. These methods are widely used industrially. However, these plate-making and direct inkjet printing methods have issues, such as poor design expressiveness (e.g., image sharpness) and the need for plate-making, making them unsuitable for small-lot production and short delivery times. Furthermore, the high-temperature steaming process to achieve color development and the soaping process to remove excess color pastes and disperse dyes increase CO2 emissions and require large amounts of wash water, leaving room for improvement in today's environmentally conscious market.

[0003] Patent Documents 1 and 2 disclose a sublimation transfer method using transfer paper on which a sublimation disperse dye ink is inkjet printed. The techniques disclosed in Patent Documents 1 and 2 are techniques that can suppress thermal shrinkage and waviness and achieve pattern reproducibility by coating the outermost layer of the transfer paper with an inorganic substance such as amorphous silica or kaolin. Patent Document 3 discloses a sublimation transfer method using transfer paper on which a non-sublimation disperse dye ink is inkjet printed. The technique disclosed in Patent Document 3 is a technique that can improve the color development of a non-sublimation disperse dye ink by applying a water-insoluble polar organic compound with an IOB value of 0.05 to 0.80 to the outermost layer of the transfer paper. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2022-131435 [Patent Document 2] Japanese Patent Application Laid-Open No. 2010-089343 [Patent Document 3] Japanese Patent Publication No. 2022-007571 Summary of the Invention [Problem to be solved by the invention]

[0005] The present application discloses a substrate for transfer printing that exhibits good color development, excellent dye leveling, and suppresses bleeding in transfer printing using a sublimation or non-sublimation disperse dye ink, and a method for producing a polyester fiber product using the substrate for transfer printing. [Means for solving the problem]

[0006] The present application discloses the following aspects as means for solving the above problems. <Aspect 1> A substrate for transfer printing, comprising a substrate and a paste layer applied to the substrate, the sizing layer comprises a hydrolyzed starch and a nonionic surfactant having an HLB of 12 or less; the hydrolyzed starch is one or both of an enzyme-modified dextrin and a pyrodextrin; The nonionic surfactant is at least one of a compound represented by the following general formula (A), a compound represented by the following general formula (B), and a compound represented by the following general formula (C): Transfer printing substrates: R 1 -O-(A 1 O) n -R 2 …(A) R 3 -O-(A 2 O) m -R 4 …(B) X-[O-(A 3 O) p -R 5 ] q …(C) In general formula (A), R 1is a hydrocarbon group having 1 to 24 carbon atoms, R 2 is a hydrogen atom or an acyl group having 2 to 24 carbon atoms, Multiple A's 1 are each independently an alkylene group having 2 to 4 carbon atoms, n is a number from 2 to 100, In general formula (B), R 3 is a hydrogen atom or an acyl group having 2 to 24 carbon atoms, R 4 is a hydrogen atom or an acyl group having 2 to 24 carbon atoms, However, R 3 If is a hydrogen atom, R 4 is an acyl group having 2 to 24 carbon atoms, Multiple A's 2 are each independently an alkylene group having 2 to 4 carbon atoms, m is a number from 2 to 100, In general formula (C), Multiple R 5 are each independently a hydrogen atom or an acyl group having 2 to 24 carbon atoms, However, at least one R 5 is an acyl group having 2 to 24 carbon atoms, Multiple A's 3 are each independently an alkylene group having 2 to 4 carbon atoms, X is a trivalent to decavalent hydrocarbon group which may have a substituent, p is a number from 2 to 100; q is a number between 3 and 10, the same as the valence of X. <Aspect 2> The transfer printing substrate of embodiment 1, The mass ratio of the nonionic surfactant to the hydrolyzed starch is 1:99 to 50:50. Substrate for transfer printing. <Aspect 3> The transfer printing substrate according to embodiment 1 or 2, The amount of the adhesive layer applied to the substrate is 3 g / m 2 ~30g / m 2 That is, Substrate for transfer printing. <Aspect 4> A method for producing a polyester fiber product, comprising: Printing a sublimation or non-sublimation disperse dye ink onto the transfer printing substrate of any one of aspects 1 to 3 to obtain a transfer printing substrate; and bringing the printing surface of the transfer printing substrate into contact with a polyester fiber material, and then applying pressure and heat to perform transfer printing; A manufacturing method comprising: <Aspect 5> The manufacturing method of embodiment 4, The transfer printing substrate is brought into contact with a polyester fiber material, and then subjected to a printing pressure of 300 g / cm 2 ~1500g / cm 2 The material is then heated to 150℃-210℃ under pressure to transfer print. A manufacturing method comprising: [Effects of the Invention]

[0007] According to the technology of the present disclosure, in transfer printing using sublimation or non-sublimation disperse dye inks, it is possible to achieve good color development, excellent dye leveling, and suppress bleeding. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, a transfer printing substrate according to one embodiment and a method for producing a polyester fiber product using the same will be described. However, the technology of the present disclosure is not limited to these embodiments, and various modifications are possible within the spirit and scope of the present disclosure.

[0009] In this application, "substrate for transfer printing" refers to a blank sheet before a design to be transferred is printed, and "transfer printing substrate" refers to a substrate for transfer printing on which a design to be transferred is printed. In addition, in this application, unless otherwise specified, "to" indicating a range of values ​​is used to mean that the values ​​before and after it are included as the lower limit and upper limit.

[0010] 1. Substrate for transfer printing A transfer printing substrate according to one embodiment includes a substrate and a paste layer applied to the substrate. The paste layer contains hydrolyzed starch and a nonionic surfactant having an HLB of 12 or less. The hydrolyzed starch is one or both of enzyme-modified dextrin and roasted dextrin. The nonionic surfactant is at least one of a compound represented by the following general formula (A), a compound represented by the following general formula (B), and a compound represented by the following general formula (C). R 1 -O-(A 1 O) n -R 2 …(A) R 3 -O-(A 2 O) m -R 4 …(B) X-[O-(A 3 O) p -R 5 ] q …(C) In general formula (A), R 1 is a hydrocarbon group having 1 to 24 carbon atoms, R 2 is a hydrogen atom or an acyl group having 2 to 24 carbon atoms, Multiple A's 1 are each independently an alkylene group having 2 to 4 carbon atoms, n is a number from 2 to 100, In general formula (B), R 3 is a hydrogen atom or an acyl group having 2 to 24 carbon atoms, R 4 is a hydrogen atom or an acyl group having 2 to 24 carbon atoms, However, R 3 If is a hydrogen atom, R 4 is an acyl group having 2 to 24 carbon atoms, Multiple A's 2 are each independently an alkylene group having 2 to 4 carbon atoms, m is a number from 2 to 100, In general formula (C), Multiple R 5are each independently a hydrogen atom or an acyl group having 2 to 24 carbon atoms, However, at least one R 5 is an acyl group having 2 to 24 carbon atoms, Multiple A's 3 are each independently an alkylene group having 2 to 4 carbon atoms, X is a trivalent to decavalent hydrocarbon group which may have a substituent, p is a number from 2 to 100; q is a number between 3 and 10, the same as the valence of X.

[0011] 1.1 Base material The substrate may be any substrate that can function as a substrate for transfer printing. The substrate may be any type of processed paper, unprocessed paper, or recycled paper, such as pulp paper made from pulp or recycled paper, kraft paper, high-quality paper, medium-quality paper, low-quality paper, carbonless base paper, coated paper, sealed paper, smoothed paper, or one-side glossy paper. For example, commonly used inexpensive paper can be used as the base paper. Alternatively, the substrate may be expensive paper such as release paper. Alternatively, the substrate may be a synthetic resin film.

[0012] Pulp as a raw material for pulp paper includes unbleached or bleached softwood pulp, hardwood pulp, kraft pulp, grind pulp, and recycled pulp made from recycled paper.

[0013] The paper substrate may contain sizing agents, paper strength agents, fillers, pigments, etc. Coated paper, which has been coated on one or both sides with a paint containing a mixture of pigments such as kaolin or calcium carbonate, adhesives such as starch or latex, dispersants, defoamers, etc. to enhance printability, can also be used as a substrate. Paper (sealed paper) coated with a sealant such as clay or synthetic resin to control the paper's water absorption and wrinkle formation can also be used as a substrate. Sealed paper is preferred because it suppresses the absorption of nonionic surfactants and auxiliary agents (described below) into the paper and reduces the amount of adhesive applied. Furthermore, paper whose surface has been physically smoothed or polished by calendering or Yankee dryer treatment can also be used as a substrate.

[0014] The basis weight of the substrate (weight of the substrate when the dimensions are 1 m x 1 m) is preferably 10 g / m from the viewpoint of workability. 2 ~120g / m 2 and more preferably 25 g / m 2 ~100g / m 2 The thickness is preferably about 0.01 mm to 0.5 mm. Specific examples include coated paper, lightly coated paper, fine paper, and medium- to low-grade paper manufactured by Nippon Paper Industries Co., Ltd., such as pure white, bleached, or unbleached kraft paper, Ginchiku, Ginrei, Hakugin, and one-side gloss kraft paper, and glassine paper manufactured by Guo Yi Paper Manufacturing (Zhangjiagang), as well as unbleached kraft paper, semi-bleached kraft paper, bleached kraft paper, bleached one-side gloss kraft paper, pure white roll paper, various coated papers, and various calendar papers, but these are merely examples. The physical properties of the substrate, such as air permeability, density, tensile strength, surface strength, and wet strength, are not particularly limited, and any substrate can be used as long as it ensures tensile strength when a sizing agent is applied. Furthermore, as mentioned above, synthetic resin films can also be used as the substrate. However, when using gravure printing, a smooth substrate is preferable for printability, so it is desirable to improve the smoothness by calendaring after applying the sizing agent.

[0015] 1.2 Glue layer In this embodiment, a predetermined paste layer is applied to the substrate. The paste layer contains hydrolyzed starch and a nonionic surfactant having an HLB of 12 or less. The paste layer may contain other ingredients in addition to the hydrolyzed starch and the nonionic surfactant.

[0016] 1.2.1 Hydrolyzed starch In this application, hydrolyzed starch refers to starch that has been hydrolyzed. Hydrolyzed starch is one or both of enzyme-modified dextrin and roasted dextrin. Enzyme-modified dextrin is produced by hydrolyzing (dextrinizing) starch using an enzyme (amylase) and then instantaneously spray-drying it, and is generally collectively referred to as maltodextrin. Roasted dextrin is produced by adding acid to starch and heating (roasting) it to hydrolyze the starch molecular chains. Hydrolysis generates many short molecular chains (white dextrin), and continued heating causes these molecular chains to repolymerize with each other, resulting in a molecular structure with a small molecular weight but a high degree of branching (yellow dextrin).

[0017] The weight-average molecular weight (Mw) of the hydrolyzed starch is preferably 5,000 to 100,000, and more preferably 10,000 to 50,000. A weight-average molecular weight of 5,000 or more ensures better barrier properties and facilitates further improvement in the definition of the pattern. A weight-average molecular weight of 100,000 or less facilitates further improvement in color development. In the present application, the "weight-average molecular weight" of the hydrolyzed starch is measured by gel permeation chromatography (GPC) using an instrument: HLC-8320 (manufactured by Tosoh Corporation), columns: OHpac SB-806M HQ + OHpac SB-803HQ (manufactured by Shodex Co., Ltd.), a 0.1 M aqueous sodium chloride mobile phase, and pullulan as a standard substance.

[0018] 1.2.2 Nonionic surfactants The nonionic surfactant having an HLB of 12 or less is at least one of the compounds represented by the general formula (A), the compounds represented by the general formula (B), and the compounds represented by the general formula (C). Among these, the nonionic surfactant having an HLB of 12 or less is preferably at least one of the compounds represented by the general formula (A), the compounds represented by the general formula (B), and the compounds represented by the general formula (C) in which X is a trivalent hydrocarbon group which may have a substituent. The nonionic surfactant may be one of the compounds represented by the general formula (A), the compounds represented by the general formula (B), and the compounds represented by the general formula (C), or a combination of two or more of these may be used. In this application, "HLB" refers to the Griffin HLB calculation. Here, the hydrophilic group refers to an ethylene oxide group. HLB of nonionic surfactant = (molecular weight of hydrophilic group part of nonionic surfactant) x 20 / molecular weight of nonionic surfactant

[0019] R in the above general formula (A) 1 is a hydrocarbon group having 1 to 24 carbon atoms. 1 may be a saturated or unsaturated hydrocarbon group, and may be linear or branched. 1 R preferably has 8 to 24 carbon atoms, and more preferably has 12 to 18 carbon atoms. 1 may be, for example, an alkyl or alkenyl group having the above number of carbon atoms.

[0020] R in the above general formula (A) 2 is a hydrogen atom or an acyl group having 2 to 24 carbon atoms. 2 When R is an acyl group, in order to obtain more stable color development, 2 is preferably an acyl group having 8 to 24 carbon atoms, more preferably an acyl group having 12 to 18 carbon atoms. The acyl group may be derived from a fatty acid having 2 to 24 carbon atoms. Examples of such fatty acids include caprylic acid, lauric acid, palmitic acid, oleic acid, and behenic acid. R 2may have a saturated or unsaturated hydrocarbon group. 2 may be a linear acyl group or a branched acyl group.

[0021] In the general formula (A), 1 are each independently an alkylene group having 2 to 4 carbon atoms. 1 and other A 1 and may have the same or different numbers of carbon atoms. 1 Specific examples of O include one or both of an ethyleneoxy group and a propyleneoxy group. In this case, A 1 The addition form of O may be random addition or block addition of ethyleneoxy groups and propyleneoxy groups. From the viewpoint of emulsifiability, when the HLB of the nonionic surfactant is 2.5 or less, random addition is preferred.

[0022] The compound represented by the general formula (A) is A 1 The compound may have a propyleneoxy group as O. In this case, the proportion of propyleneoxy groups in the compound is preferably 30% by mass or more, and more preferably 60% by mass or more, in order to obtain more stable color development.

[0023] In the general formula (A), n is a number from 2 to 100. n is preferably 80 or less, more preferably 50 or less. When there is one type of compound represented by the general formula (A), n is an integer. When there are two or more types of compounds represented by the general formula (A), n is an average value (number average value) and does not necessarily have to be an integer. For example, R 1 -OA 1 OR 2 and 1 mole of a compound represented by R 1 -O-(A 1 O) 101 -R 2 is considered to be a compound represented by general formula (A) where n=(1×1+10×101) / (1+10)=91.9.

[0024] R in the above general formula (B) 3 is a hydrogen atom or an acyl group having 2 to 24 carbon atoms. 3 When R is an acyl group, in order to obtain more stable color development, 3 is preferably an acyl group having 8 to 24 carbon atoms, more preferably an acyl group having 12 to 18 carbon atoms. The acyl group may be derived from a fatty acid having 2 to 24 carbon atoms. Examples of such fatty acids include caprylic acid, lauric acid, palmitic acid, oleic acid, and behenic acid. R 3 may have a saturated or unsaturated hydrocarbon group. 3 may be a linear acyl group or a branched acyl group.

[0025] R in the above general formula (B) 4 is a hydrogen atom or an acyl group having 2 to 24 carbon atoms, provided that R 3 If is a hydrogen atom, R 4 is an acyl group having 2 to 24 carbon atoms. 4 When R is an acyl group, in order to obtain more stable color development, 4 is preferably an acyl group having 8 to 24 carbon atoms, more preferably an acyl group having 12 to 18 carbon atoms. The acyl group may be derived from a fatty acid having 2 to 24 carbon atoms. Examples of such fatty acids include caprylic acid, lauric acid, palmitic acid, oleic acid, and behenic acid. R 4 may have a saturated or unsaturated hydrocarbon group. 4 may be a linear acyl group or a branched acyl group.

[0026] In the general formula (B), a plurality of A 2 are each independently an alkylene group having 2 to 4 carbon atoms. 2 and other A 2 and may have the same or different numbers of carbon atoms. 2Specific examples of O include one or both of an ethyleneoxy group and a propyleneoxy group. In this case, A 2 The addition form of O may be random addition or block addition of ethyleneoxy groups and propyleneoxy groups. From the viewpoint of emulsifiability, when the HLB of the nonionic surfactant is 2.5 or less, random addition is preferred.

[0027] The compound represented by the general formula (B) is A 2 The compound may have a propyleneoxy group as O. In this case, the proportion of propyleneoxy groups in the compound is preferably 30% by mass or more, and more preferably 60% by mass or more, in order to obtain more stable color development.

[0028] In the general formula (B), m is a number from 2 to 100. m is preferably 80 or less, more preferably 50 or less. When there is one type of compound represented by the general formula (B), m is an integer. When there are two or more types of compounds represented by the general formula (B), m is an average value (number average value) and does not necessarily have to be an integer. For example, R 3 -OA 2 OR 4 and 1 mole of a compound represented by R 3 -O-(A 2 O) 101 -R 4 is considered to be a compound represented by general formula (B) where m=(1×1+10×101) / (1+10)=91.9.

[0029] In the general formula (C), 5 are each independently a hydrogen atom or an acyl group having 2 to 24 carbon atoms, provided that at least one R 5 is an acyl group having 2 to 24 carbon atoms. 5 When R is an acyl group, in order to obtain more stable color development, 5is preferably an acyl group having 8 to 24 carbon atoms, more preferably an acyl group having 12 to 18 carbon atoms. The acyl group may be derived from a fatty acid having 2 to 24 carbon atoms. Examples of such fatty acids include caprylic acid, lauric acid, palmitic acid, oleic acid, and behenic acid. R 5 may have a saturated or unsaturated hydrocarbon group. 5 may be a linear acyl group or a branched acyl group.

[0030] In the general formula (C), a plurality of A 3 are each independently an alkylene group having 2 to 4 carbon atoms. 3 and other A 3 and may have the same or different numbers of carbon atoms. 3 Specific examples of O include one or both of an ethyleneoxy group and a propyleneoxy group. In this case, A 3 The addition form of O may be random addition or block addition of ethyleneoxy groups and propyleneoxy groups. From the viewpoint of emulsifiability, when the HLB of the nonionic surfactant is 2.5 or less, random addition is preferred.

[0031] In the general formula (C), X is a trivalent to decavalent hydrocarbon group which may have a substituent. X is preferably a trivalent hydrocarbon group which may have a substituent. X may be derived from, for example, a polyhydric alcohol. Examples of polyhydric alcohols include glycerin, trimethylolpropane, pentaerythritol, and sorbitol.

[0032] In the general formula (C), p is a number from 2 to 100. p is preferably 80 or less, more preferably 50 or less. When there is one type of compound represented by the general formula (C), p is an integer. When there are two or more types of compounds represented by the general formula (C), p is an average value (number average value) and does not necessarily have to be an integer. For example, X-[OA 3 OR 5 ] qand 1 mole of a compound represented by X-[O-(A 3 O) 101 -R 5 ] q is considered to be a compound represented by general formula (C) where p=(1×1+10×101) / (1+10)=91.9.

[0033] In the above general formula (C), q is a number of 3 to 10, the same as the valence of X.

[0034] In any of the above general formulas (A) to (C), a nonionic surfactant having an HLB of 12 or less is preferably a self-emulsifying type. The lower limit of the HLB of the nonionic surfactant is not particularly limited, but is preferably 1 or more. When the HLB is 1 or more, emulsification is improved, separation of the paste is suppressed, and uniform coating becomes easier. When the HLB is 12 or less, the foaming state becomes good, and uniform coating becomes easier. The HLB is preferably 1 to 5. Note that a self-emulsifying type refers to one in which there is no separation in a 1% soln. aqueous solution of the nonionic surfactant (stirred for 1 minute at 20°C and then allowed to stand for 1 minute).

[0035] As a method for producing the compound represented by general formula (A), for example, ethylene oxide is first added to a monohydric alcohol having 1 to 24 carbon atoms, and then propylene oxide is added by block addition or random addition. The addition reaction of the alkylene oxide can be carried out by a conventionally known method and is not particularly limited. Next, R 2 When an acyl group is used, the compound can be synthesized by an esterification reaction between the above-mentioned alkylene oxide adduct and a fatty acid having 2 to 24 carbon atoms. This esterification reaction can be carried out by a conventionally known method and is not particularly limited.

[0036] The compound represented by general formula (B) can be produced by a synthesis method involving an esterification reaction between a polyalkylene oxide and a fatty acid having a carbon number of 2 to 24. This esterification reaction may be carried out by a conventionally known method, and is not particularly limited.

[0037] As a method for producing the compound represented by general formula (C), for example, propylene oxide is first added to a trihydric to decahydric alcohol, and then ethylene oxide is added in a block or random manner. The addition reaction of the alkylene oxide can be carried out by a conventionally known method and is not particularly limited. Next, R 5 When an acyl group is used, the compound can be synthesized by an esterification reaction between the above-mentioned alkylene oxide adduct and a fatty acid having 2 to 24 carbon atoms. This esterification reaction can be carried out by a conventionally known method and is not particularly limited.

[0038] 1.2.3 Mixing ratio (mass ratio) In the paste layer, the blending ratio (mass ratio) of the nonionic surfactant to the hydrolyzed starch is not particularly limited, but is preferably 1:99 to 50:50, and more preferably 10:90 to 30:70. When the mass ratio of the nonionic surfactant is 1 or more, better color development is achieved, and when it is 50 or less, the definition of the pattern is improved.

[0039] 1.2.4 Amount of Grant The amount of the adhesive layer applied to the substrate is not particularly limited, but is preferably 3 g / m 2 ~30g / m 2 It is preferable that the density is 5 g / m 2 ~15g / m 2 It is more preferable that the application amount is 3 g / m 2 By setting the density to 30g / m or more, the color development becomes better. 2 By satisfying the condition of 0.1 to 1.0 mm or less, sticking between the transfer printing substrate and the fiber material after transfer printing can be suppressed, and deterioration in color development can be further suppressed.

[0040] 1.2.5 Other ingredients The paste layer may further contain an auxiliary agent in addition to the hydrolyzed starch and nonionic surfactant. Examples of the auxiliary agent used here include those for stabilizing the coating, improving the ink receptivity of the transfer printing substrate, and improving various fastnesses. For example, one or more selected from cellulose derivatives, dispersants, water-soluble polymers, surfactants, thickeners, humectants, pH adjusters, dye deepening agents, preservatives, antifungal agents, degassing agents, antifoaming agents, and reduction inhibitors may be added. The auxiliary agent is a compound other than those represented by the above general formulas (A), (B), and (C).

[0041] For example, the viscosity of the paste can be adjusted using a plant-based thickener such as carboxy starch or carboxymethyl cellulose. The viscosity of the paste when applied to the substrate is preferably 1,000 mPa·s to 3,000 mPa·s. The viscosity was measured at 20°C using a viscometer (equipment: Toki Sangyo / TVB-10M, BM-2 rotor).

[0042] 1.3 Manufacturing method of substrate for transfer printing The transfer printing substrate having the substrate and paste layer described above can be prepared, for example, by applying the hydrolyzed starch and the nonionic surfactant to the substrate. Application to the substrate can be performed by coating, spraying, immersion, or the like, and then drying, resulting in the nonionic surfactant and hydrolyzed starch being absorbed into the substrate and / or layered on the substrate surface, forming a paste layer. Application to the substrate by coating or spraying is preferred, since it forms a paste layer composed of the nonionic surfactant and hydrolyzed starch on the substrate surface. Specific examples of coating devices for the hydrolyzed starch and the nonionic surfactant include various blade coaters, comma direct coaters, lip coaters, gravure coaters, comma reverse coaters, air knife coaters, slot die coaters, jet coaters, bar coaters, curtain coaters, and size presses. After application, smoothing and gloss finishing can be performed using a calendering device such as a machine calender, soft calender, or super calender.

[0043] 2. Transfer printing substrate The transfer printing substrate can be obtained by printing a pattern on the surface of a transfer printing substrate to which a paste layer has been applied, using a conventionally known method (e.g., an inkjet printing method) using a sublimation or non-sublimation disperse dye ink.

[0044] Sublimation and non-sublimation disperse dye inks may be commercially available products, such as sublimation disperse dye inks Sb410, Sb-610, and Sb320 manufactured by Mimaki Engineering Co., Ltd., DH21 manufactured by Muto Industries Ltd., UltraChrome DS ink manufactured by Epson Corporation, Texart RT-640 manufactured by Roland Corporation, and Blue Stellar S series manufactured by LANYU DIGITAL Corporation, and non-sublimation disperse dye inks DD-400 manufactured by Mimaki Engineering Co., Ltd. and Blue Stellar D series manufactured by LANYU DIGITAL Corporation.

[0045] 3. Transfer printing method By using the above-mentioned transfer printing substrate, transfer printing can be performed on a printed material. A transfer printing method according to one embodiment includes printing a design on the above-mentioned transfer printing substrate to obtain a transfer printing substrate, bringing the surface of the transfer printing substrate on which the design is printed into contact with the printed material, and peeling the transfer printing substrate from the printed material. When bringing the transfer printing substrate into contact with the printed material, heating and / or pressure is applied as necessary. The heating and pressure conditions in this case are those conventionally known in transfer printing methods. For example, a method of heating or heating and pressure application while bringing the transfer printing substrate into contact with the printed material using a press, a heated roll, a heated drum, or the like can be mentioned.

[0046] Examples of objects to be transferred are various fiber materials. In particular, polyester fiber materials are preferred. Hereinafter, a method for producing polyester fiber products via the transfer printing method will be described.

[0047] 4. Manufacturing method of polyester fiber products A method for producing a polyester-based fiber product according to one embodiment includes printing a sublimation or non-sublimation disperse dye ink onto the above-mentioned transfer printing substrate to obtain a transfer printing substrate, and then contacting the printed surface of the transfer printing substrate with a polyester-based fiber material, followed by applying pressure and heat to perform transfer printing.

[0048] Examples of polyester fiber materials include woven fabrics, knitted fabrics, nonwoven fabrics, and sheets of polyester materials such as polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polylactic acid, depolymerized polyester, cationic dyeable polyester, room temperature dyeable polyester, and alkali-reduced polyester. These materials also include blends, mixed fibers, and interwoven products that primarily contain polyester materials and natural and / or synthetic fiber materials. In the case of blends, mixed fibers, and interwoven products, the polyester content is preferably 50% by mass or more. Examples of natural fiber materials that may be contained in polyester fiber materials include cellulosic fiber materials such as cotton, linen, lyocell, rayon, and acetate, and protein-based fiber materials such as silk, wool, and animal hair. Examples of synthetic fiber materials include all known synthetic fiber materials such as nylon, vinylon, polyacrylic, and polyurethane. Furthermore, composite fibers in which various materials are mixed at the yarn stage are also acceptable.

[0049] For example, when transferring a print onto a polyester fiber material, the transfer printing substrate is brought into contact with the polyester fiber material and then the transfer printing is performed at a rate of 300 g / cm. 2 ~1500g / cm 2 Transfer printing may be performed by heating the material to 150 to 210°C while applying pressure of 300 g / cm. 2 By setting the density to 1500 g / cm or more, the color development becomes better. 2 By keeping the heating temperature at or below 150°C, deterioration in the texture of the polyester fiber material can be suppressed. In addition, by keeping the heating temperature at or above 150°C, color development becomes better, and by keeping the heating temperature at or below 210°C, deterioration in the texture of the polyester fiber material and thermal yellowing can be suppressed.

[0050] 5.Effects By providing a substrate with a predetermined adhesive layer to obtain a substrate for transfer printing, and then performing transfer printing using the substrate for transfer printing, it is possible to achieve good color development, excellent leveling, and suppress bleeding in transfer printing using sublimation or non-sublimation disperse dye inks. [Example]

[0051] As described above, one embodiment of the technology of the present disclosure has been described, but the technology of the present disclosure can be modified in various ways other than the above embodiment without departing from the gist thereof. The technology of the present disclosure will be described in more detail below using examples, but the technology of the present disclosure is not limited to the following examples. In these examples, "parts by mass" and "% by mass" represent the "parts by mass" and "% by mass" of the dry solid content or the substantial component amount, respectively. The amount of applied adhesive layer represents the dry solid content.

[0052] 1. Preparation of Nonionic Surfactants Nonionic surfactants having the structures shown in Table 1 below were prepared. The number of ethylene oxide (EO) and propylene oxide (PO) added represents the average number of moles added. The HLB was calculated from the chemical structure.

[0053] [Table 1]

[0054] 2. Preparation of substrate for transfer printing 2.1 Example 1 15 g of hydrolyzed starch / Amycol NO. 7-H (enzyme-modified dextrin, manufactured by Nippon Starch Chemical Co., Ltd., weight-average molecular weight: 38,600), 2 g of Nikka Gum 3A (carboxymethyl starch, manufactured by Nikka Chemical Co., Ltd.), and 78 g of 60°C ion-exchanged water were stirred with a high-speed Disper mixer (300 rpm) until completely dissolved. After complete dissolution, 5 g of nonionic surfactant / St-5EO-28PO-R (HLB: 2.1) was added and stirred to obtain a uniform paste with a solids content of 22% and a viscosity of 1520 mPa·s. The paste was then applied to a substrate (Nippon Paper Industries Co., Ltd., bleached kraft paper, basis weight: 80 g / m) using a coating machine (comma coater). 2 ) with a dry coating weight of 7g / m 2 The resulting substrate for transfer printing was then evaluated according to the evaluation criteria described below.

[0055] 2.2 Examples 2 to 20 As shown in Table 2 below, transfer printing substrates were obtained and evaluated in the same manner as in Example 1, except that the nonionic surfactant was changed.

[0056] 2.3 Example 21 A substrate for transfer printing was obtained and evaluated in the same manner as in Example 1, except that the hydrolyzed starch was changed to Akadama dextrin 4-C (roasted dextrin, manufactured by Nippon Starch Chemical Co., Ltd., weight average molecular weight: 15,000).

[0057] 2.4 Example 22 19 g of hydrolyzed starch / Amycol NO. 7-H (enzyme-modified dextrin, manufactured by Nihon Starch Chemical Co., Ltd., weight-average molecular weight: 38,600), 2 g of Nikka Gum 3A (carboxymethyl starch, manufactured by Nihon Kagaku Co., Ltd.), and 78 g of 60°C ion-exchanged water were stirred with a high-speed Disper mixer (3000 rpm) until completely dissolved. 1 g of nonionic surfactant / St-5EO-28PO (HLB: 2.1) was added, yielding a uniform paste with a solids content of 22% and a viscosity of 1590 mPa s. A transfer printing substrate was obtained and evaluated in the same manner as in Example 1, except for using this paste.

[0058] 2.5 Example 23 10 g of hydrolyzed starch / Amycol NO. 7-H (enzyme-modified dextrin, manufactured by Nippon Starch Chemical Co., Ltd., weight-average molecular weight: 38,600) and 80 g of 60°C ion-exchanged water were stirred with a high-speed Disper mixer (3000 rpm) until completely dissolved. After complete dissolution, 10 g of nonionic surfactant / St-30PO-20EO (HLB: 6.1) was added, yielding a uniform paste with a solids content of 20% and a viscosity of 1020 mPa s. A transfer printing substrate was obtained and evaluated in the same manner as in Example 1, except for using this paste.

[0059] 2.6 Comparative Example 1 20 g of hydrolyzed starch / Amycol No. 7-H (enzyme-modified dextrin, manufactured by Nihon Starch Chemical Co., Ltd., weight-average molecular weight: 38,600), 2 g of Nikka Gum 3A (carboxymethyl starch, manufactured by Nihon Kagaku Co., Ltd.), and 78 g of 60°C ion-exchanged water were stirred with a high-speed Disper mixer (300 rpm) until completely dissolved, yielding a uniform paste with a solids content of 22% and a viscosity of 1520 mPa s. A transfer printing substrate was obtained and evaluated in the same manner as in Example 1, except for using this paste.

[0060] 2.7 Comparative Example 2 15 g of hydrolyzed starch / Amycol NO. 7-H (enzyme-modified dextrin, manufactured by Nihon Starch Chemical Co., Ltd., weight-average molecular weight: 38,600), 2 g of Nikka Gum 3A (carboxymethyl starch, manufactured by Nihon Kagaku Co., Ltd.), and 78 g of 60°C ion-exchanged water were stirred with a high-speed Disper mixer (300 rpm) until completely dissolved. After complete dissolution, 5 g of nonionic surfactant / TDA-8EO (HLB: 12.8) was added, yielding a uniform paste with a solids content of 22% and a viscosity of 1340 mPa s. A transfer printing substrate was obtained and evaluated in the same manner as in Example 1, except for using this paste.

[0061] 2.8 Comparative Example 3 15 g of hydrolyzed starch / Amycol NO. 7-H (enzyme-modified dextrin, manufactured by Nihon Starch Chemical Co., Ltd., weight-average molecular weight: 38,600), 2 g of Nikka Gum 3A (carboxymethyl starch, manufactured by Nihon Kagaku Co., Ltd.), and 78 g of 60°C ion-exchanged water were stirred with a high-speed Disper mixer (3000 rpm) until completely dissolved. After complete dissolution, 5 g of nonionic surfactant / PEG1000-DO (HLB: 13.1) was added, yielding a uniform paste with a solids content of 22% and a viscosity of 1630 mPa s. A transfer printing substrate was obtained and evaluated in the same manner as in Example 1, except for using this paste.

[0062] 2.9 Comparative Example 4 15 g of hydrolyzed starch / Amycol NO. 7-H (enzyme-modified dextrin, manufactured by Nihon Starch Chemical Co., Ltd., weight-average molecular weight: 38,600), 2 g of Nikka Gum 3A (carboxymethyl starch, manufactured by Nihon Kagaku Co., Ltd.), and 78 g of 60°C ion-exchanged water were stirred with a high-speed Disper mixer (3000 rpm) until completely dissolved. After complete dissolution, 5 g of nonionic surfactant / PL-64 (HLB: 8.0) was added, yielding a uniform paste with a solids content of 22% and a viscosity of 1440 mPa s. A transfer printing substrate was obtained and evaluated in the same manner as in Example 1, except for using this paste.

[0063] 2.10 Comparative Example 5 15 g of hydrolyzed starch / Amycol NO. 7-H (enzyme-modified dextrin, manufactured by Nihon Starch Chemical Co., Ltd., weight-average molecular weight: 38,600), 2 g of Nikka Gum 3A (carboxymethyl starch, manufactured by Nihon Kagaku Co., Ltd.), and 78 g of 60°C ion-exchanged water were stirred with a high-speed Disper mixer (3000 rpm) until completely dissolved. After complete dissolution, 5 g of nonionic surfactant / St-60EO-60PO (HLB: 8.3) was added, yielding a uniform paste with a solids content of 22% and a viscosity of 2130 mPa s. A transfer printing substrate was obtained and evaluated in the same manner as in Example 1, except for using this paste.

[0064] 2.11 Comparative Example 6 Base material (Nippon Paper Industries, bleached kraft paper, basis weight 80g / m 2The evaluation was carried out in the same manner as in Example 1, except that the substrate was used as it was as a substrate for transfer printing without applying a sizing agent to the substrate.

[0065] 3. Evaluation Method 3.1 Evaluation with sublimation disperse dye water-based ink Using a Mimaki Engineering TS100-1600 inkjet printer, a sublimation disperse dye water-based ink, Sb-610 black ink, manufactured by Mimaki Engineering, was printed onto the substrate for transfer printing to obtain a transfer printing substrate. 2 ) and then pressurized with a Hashima HSP-5400 transfer press at 190°C for 40 seconds at 300g / m 2 The dye was applied to a PET taffeta fabric under the heat and pressure conditions, and the transfer printing substrate was removed to obtain a dyed PET fabric.

[0066] 3.2 Evaluation with non-sublimation disperse dye water-based ink Using a Mimaki Engineering Co., Ltd. TS100-1600 inkjet printer, a non-sublimation disperse dye water-based ink, DD-400 black ink, manufactured by Mimaki Engineering Co., Ltd., was printed onto the transfer printing substrate to obtain a transfer printing substrate. 2 ) and then pressurized with a Hashima HSP-5400 transfer press at 200°C for 60 seconds at 300g / m 2 The dye was applied to a PET taffeta fabric under the heat and pressure conditions, and the transfer printing substrate was removed to obtain a dyed PET fabric.

[0067] 3.3 Color development The resulting dyed fabric was measured for its lightness L value using a colorimeter CM-3700d (Konica Minolta) to evaluate its color development. In the case of black ink in particular, the lightness L value indicates the intensity of the color density, with a smaller L value indicating a higher color density. For sublimation disperse dye aqueous inks, an L value of 21.0 or less was deemed acceptable. For non-sublimation disperse dye aqueous inks, an L value of 30.0 or less was deemed acceptable.

[0068] 3.4 Level staining The uniformity of the dyeing was judged by the naked eye based on the presence or absence and size of staining spots. The judging criteria are as follows: 3: No variations in dyeing density or spots are observed, and dyeing uniformity is remarkably excellent. 2: Only slight staining or spots of varying shades of dye are observed, and the dyeing uniformity is good. 1: There are unevenness in the dyeing and spots, and the dyeing uniformity is poor.

[0069] 3.5 Image accuracy (bleeding) The accuracy of the image was judged by the naked eye based on the degree of bleeding of the image. The judging criteria are as follows: 3: There is absolutely no bleeding of the image, and the accuracy of the image is remarkably excellent. 2: Only slight bleeding of the image is observed, and the image is of good precision. 1: The image is blurred and the accuracy of the image is poor.

[0070] 4. Evaluation Results The evaluation results are shown in Tables 2 and 3 below.

[0071] [Table 2]

[0072] [Table 3]

[0073] The results shown in Tables 2 and 3 show that when transfer printing is performed using a transfer dye paper having a substrate and a glue layer applied to the substrate, which satisfies the following requirements (1) to (3), the color development is good, the dyeing level is excellent, and bleeding can be suppressed in both transfer printing using sublimation disperse dye ink and transfer printing using non-sublimation disperse dye ink.

[0074] (1) The adhesive layer contains hydrolyzed starch and a nonionic surfactant having an HLB of 12 or less. (2) The hydrolyzed starch is one or both of enzyme-modified dextrin and pyrodextrin. (3) The nonionic surfactant is at least one of a compound represented by the following general formula (A), a compound represented by the following general formula (B), and a compound represented by the following general formula (C).

[0075] R 1 -O-(A 1 O) n -R 2 …(A) R 3 -O-(A 2 O) m -R 4 …(B) X-[O-(A 3 O) p -R 5 ] q …(C) In general formula (A), R 1 is a hydrocarbon group having 1 to 24 carbon atoms, R 2 is a hydrogen atom or an acyl group having 2 to 24 carbon atoms, Multiple A's 1 are each independently an alkylene group having 2 to 4 carbon atoms, n is a number from 2 to 100, In general formula (B), R 3 is a hydrogen atom or an acyl group having 2 to 24 carbon atoms, R 4 is a hydrogen atom or an acyl group having 2 to 24 carbon atoms, However, R 3 If is a hydrogen atom, R 4 is an acyl group having 2 to 24 carbon atoms, Multiple A's 2 are each independently an alkylene group having 2 to 4 carbon atoms, m is a number from 2 to 100, In general formula (C), Multiple R 5 are each independently a hydrogen atom or an acyl group having 2 to 24 carbon atoms, However, at least one R 5 is an acyl group having 2 to 24 carbon atoms, Multiple A's 3 are each independently an alkylene group having 2 to 4 carbon atoms, X is a trivalent to decavalent hydrocarbon group which may have a substituent, p is a number from 2 to 100; q is a number between 3 and 10, the same as the valence of X. [Industrial Applicability]

[0076] The transfer printing method using the transfer printing substrate of the present disclosure is revolutionary and practical because it can provide reproducible color development.

Claims

1. A substrate for transfer printing, comprising a substrate and a paste layer applied to the substrate, the sizing layer comprises a hydrolyzed starch and a nonionic surfactant having an HLB of 12 or less; the hydrolyzed starch is one or both of an enzyme-modified dextrin and a pyrodextrin; The nonionic surfactant is at least one of a compound represented by the following general formula (A), a compound represented by the following general formula (B), and a compound represented by the following general formula (C): Transfer printing substrate: R １ -O-(A １ O) ｎ -R ２ …(A) R ３ -O-(A ２ O) ｍ -R ４ …(B) X-[O-(A ３ O) ｐ -R ５ ] ｑ …(C) In general formula (A), R １ is a hydrocarbon group having 1 to 24 carbon atoms, R ２ is a hydrogen atom or an acyl group having 2 to 24 carbon atoms, Multiple A's １ are each independently an alkylene group having 2 to 4 carbon atoms, n is a number from 2 to 100, In general formula (B), R ３ is a hydrogen atom or an acyl group having 2 to 24 carbon atoms, R ４ is a hydrogen atom or an acyl group having 2 to 24 carbon atoms, However, R ３ is a hydrogen atom, R ４ is an acyl group having 2 to 24 carbon atoms, Multiple A's ２ are each independently an alkylene group having 2 to 4 carbon atoms, m is a number from 2 to 100; In general formula (C), Multiple R ５ are each independently a hydrogen atom or an acyl group having 2 to 24 carbon atoms, However, at least one R ５ is an acyl group having 2 to 24 carbon atoms, Multiple A's ３ are each independently an alkylene group having 2 to 4 carbon atoms, X is a trivalent to decavalent hydrocarbon group which may have a substituent, p is a number from 2 to 100; q is a number from 3 to 10, which is the same as the valence of X.

2. The transfer printing substrate according to claim 1, the mass ratio of the nonionic surfactant to the hydrolyzed starch is 1:99 to 50:50; Substrate for transfer printing.

3. The transfer printing substrate according to claim 1 or 2, The amount of the adhesive layer applied to the substrate is 3 g / m ２ ~30g / m ２ That is, Substrate for transfer printing.

4. A method for producing a polyester fiber product, comprising: A method for producing a transfer printing substrate by printing a sublimation or non-sublimation disperse dye ink on the substrate for transfer printing according to claim 1 or 2; and bringing the printing surface of the transfer printing substrate into contact with a polyester fiber material, and then applying pressure and heat to perform transfer printing; A manufacturing method comprising:

5. The manufacturing method according to claim 4, The transfer printing substrate is brought into contact with a polyester fiber material, and then subjected to a printing at 300 g / cm ２ ~1500g / cm ２ Heating the material to 150°C to 210°C while applying pressure to the material, and then transferring the material. A manufacturing method comprising:

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