A thermal transfer foil film for wash labels and its preparation method

Abstract

The present invention belongs to the technical field of hot stamping materials, and specifically relates to a heat transfer foil for use as a wash label. The heat transfer foil comprises a garment heat transfer foil with an absorption layer and a protective layer, and a heat transfer ribbon for use therewith. The heat transfer ribbon comprises, from the inside out, a release layer, an adhesive layer, and a coloring layer. During use, effective information is edited using a computer, and then the coating material of the heat transfer ribbon is melted by heating a specific area. The ribbon is then bonded to the garment heat transfer foil with the absorption layer and the protective layer. The heat transfer foil is then heated in a hot stamping machine, and the absorption layer, protective layer, and ribbon imprint are transferred together to a printing substrate such as polyester, spandex, silk, or nylon. The wash label produced using this method can achieve the advantages of variable printing of one code per item while also achieving the color fastness and washability of traditional printing methods.

Description

Technical Field

[0001] The invention belongs to the technical field of hot stamping materials, and particularly relates to a heat transfer foil film for wash labels and a preparation method thereof. Background Art

[0002] In recent years, with the advancement of thermal transfer technology, label applications have become increasingly widespread. Many products produced using traditional printing methods can now be realized using digital thermal transfer. In particular, with the maturing of secondary transfer technology, the combination of carbon ribbon and transfer foil can overcome the limitations of carbon ribbon printing while also resolving the issue of transfer foil being unable to be digitized.

[0003] With the increasing demand for unique product identification and labeling technology and the increasing performance requirements for product wash label fastness, the printing of clothing care labels using existing technology, such as wash label ribbons, cannot achieve print fastness on complex fabrics, and transfer film technology cannot achieve variable information printing. Therefore, a wash label thermal transfer foil film, combining the advantages of these two technologies, can address this bottleneck. Based on this, the present application was developed. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a heat transfer foil film for wash labels. The product can achieve the advantages of variable printing of one item and one code, and can also achieve the color fastness and washability of traditional printing methods.

[0005] The present invention also provides a method for preparing the heat transfer foil film for wash labels.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A heat transfer foil for wash labels includes a transfer foil with an absorbent layer and a protective layer, and a heat transfer ribbon for use with it. The heat transfer ribbon comprises a base 1, a back coating layer applied to one side of the base 1, and a release layer, an adhesive layer, and a coloring layer applied sequentially from the inside outward to the other side of the base 1. The transfer foil also comprises a base 2, and an absorbent layer and a protective layer applied sequentially to one side of the base 2. During use, effective information is edited using a computer, and then the coating material of the heat transfer ribbon is melted by heating a specific area. The ribbon then adheres to the transfer foil with the absorbent layer and protective layer. The heat transfer ribbon is then heated in a hot stamping machine, and the absorbent layer, protective layer, and ribbon print are transferred to a printing substrate such as polyester, spandex, silk, or nylon.

[0008] Specifically, the back coating layer may be silicone-modified acrylic resin.

[0009] Specifically, in terms of mass percentage, the raw material ratios of the absorption layer are: 35-45% polyurethane modified silicone resin, 55-70% fumed silica, and 5-10% PVB resin;

[0010] The protective layer's raw material ratio is: 35-50% acrylic resin, 2-5% color fixative, 2-5% wetting and dispersing agent, 2-5% hydrophobicizing agent, and the balance chloroether resin. The color fixative can be Zhiyuan Xinke Chemical's multifunctional color fixative GL-637, and the wetting and dispersing agent can be BYK Chemical's DISPERBYK-2118. The hydrophobicizing agent can be Evonik's TEGO-1650 hydrophobicizing agent.

[0011] Furthermore, the total thickness of the transfer foil is 55-60 μm, wherein the thickness of the absorption layer is 3-5 μm, and the thickness of the protection layer is 3-5 μm.

[0012] The tape base 2 can be an ultra-high temperature resistant PET film with a thickness of 45-55 μm, preferably 50 μm, a heat deformation temperature ≥ 165°C, and a surface tension ≥ 42 dynes;

[0013] Specifically, the ratio of the raw materials of the release layer is as follows: 35-45% montan OP wax emulsion, 5-10% wetting agent, and the balance polyethylene glycol. The wetting agent can be BASF WE 3323 hyperbranched polyether water-oil universal leveling agent.

[0014] Specifically, the adhesive layer comprises the following raw materials, by weight: 25-35% waterborne polyurethane resin, 25-35% waterborne polyester resin, 2-5% adhesion promoter, 2-5% leveling agent, and the balance waterborne acrylic resin. The adhesion promoter can be Walker's VOK-B-515.71W, and the leveling agent can be RK-8021 from Qingdao Shengshi New Materials Co., Ltd.

[0015] Specifically, the raw material ratios for the color layer, measured by mass percentage, are: 20-25% water-soluble carbon black, 2-5% wetting agent, 3-5% dispersant, and the balance polyether-modified polyurethane resin. The wetting agent can be BASF WE 3323 hyperbranched polyether universal water-oil leveling agent, and the dispersant can be Deuterium dispersant B6012.

[0016] Furthermore, the thermal transfer ribbon has a total thickness of 6-7.5 μm, a release layer of 0.3-0.5 μm, an adhesive layer of 1.5-1.8 μm, and a coloring layer of 1.3-1.5 μm. The ribbon base 1 can be a high-strength, ultra-thin polyester film or a biaxially oriented polyethylene terephthalate film, with a thickness of 3-4 μm, preferably 3.5 μm, a tensile strength of no less than 320 MPa, and a heat distortion temperature of 150°C or higher.

[0017] The present invention provides a method for preparing the above-mentioned heat transfer foil film for wash labels, which comprises the following steps:

[0018] a. Prepare thermal transfer ribbon

[0019] (1) Apply a back coating layer on one side of the tape base 1. Specifically, by mass ratio, mix toluene and silicone-modified acrylic resin at a ratio of 8-9:1-2, evenly apply the mixture on one side of the tape base 1, and dry it for later use.

[0020] (2) preparing a release layer on the other side of the tape base 1 obtained in step (1); specifically, mixing the montan OP wax emulsion and polyethylene glycol with distilled water and isopropyl alcohol in a ratio of 3-5:2-4:2-3 by mass, adding a wetting agent, dispersing and grinding to a particle size of about 0.2-0.5 μm, and then evenly coating the other side of the tape base 1. After drying at 100°C-120°C, the release layer is obtained;

[0021] (3) preparing an adhesive layer on the surface of the release layer prepared in step (2); dissolving the waterborne polyurethane resin, waterborne polyester resin and waterborne acrylic resin in distilled water at a mass ratio of 4-5:5-6, adding an adhesion promoter and a leveling agent to disperse them evenly, and then evenly coating them on the surface of the release layer. After drying at 80-100°C, the adhesive layer is obtained;

[0022] (4) preparing a colored layer on the surface of the bonding layer prepared in step (3), specifically, dissolving the water-soluble carbon black and the polyether-modified polyurethane resin in distilled water at a mass ratio of 5-7:3-5, then adding a wetting agent and a dispersant to disperse and grind the mixture until the particle size reaches about 0.8-1 μm, and then evenly coating the mixture on the surface of the bonding layer. After drying at 90-100°C, the colored layer is obtained;

[0023] b. Prepare transfer foil:

[0024] (5) An absorption layer is prepared on one side of the tape base 2. Specifically, the polyurethane modified silicone resin and PVB resin are dissolved in butanone at a mass ratio of 3:3-4, and then fumed silica is added, dispersed, and ground to a particle size of about 2-3 μm. The fumed silica is then evenly coated on one side of the tape base 2 and dried at 80-100°C to form the absorption layer.

[0025] (6) A protective layer is prepared on the other side of the absorption layer prepared in step (5). Specifically, the acrylic resin and the chloroether resin are dissolved and mixed with toluene and butanone in a ratio of toluene: butanone: (acrylic resin + chloroether resin) = 3:3:2-4 by mass. A fixing agent, a wetting dispersant and a hydrophobic additive are added and dispersed evenly, and then coated on the surface of the absorption layer. The protective layer is obtained after drying at 80-100°C.

[0026] When the heat transfer foil for wash labels of the present invention is used, effective information is edited by a computer, and then the coating material of the heat transfer carbon ribbon is melted by heating a specific area, and then adhered to the transfer foil for clothing with an absorption layer and a protective layer. After heating by a hot ironing machine, the absorption layer, protective layer and carbon ribbon imprint are transferred together to a printing substrate such as polyester, spandex, silk, nylon, etc., giving the product excellent printing fastness, water washing resistance, friction color fastness and ironing resistance.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The present invention combines the information of thermal transfer technology with the advantages of hot stamping technology, and to a certain extent overcomes the current traditional printing method, in which the printing template is fixed and the product information update of one item with one code cannot be realized, and the use of only wash mark carbon ribbon cannot achieve the printing fastness of complex fabrics. The use of carbon ribbon and transfer foil film in combination, through the secondary transfer technology, can not only overcome the limitations of carbon ribbon printing, but also solve the problem that the transfer foil film cannot be digitized. After the information is hot stamped on the printing substrate, the imprint has excellent printing fastness, water washing resistance, friction color fastness and ironing resistance. The wash fastness test, conducted under different conditions, showed that the wash fastness of the heat transfer foil for wash labels provided by the present invention was ≥ Grade 4 (determined by color adhesion and color change cards). A rubbing color fastness test showed that the heat transfer foil for wash labels provided by the present invention had a rubbing color fastness greater than Grade 4 (determined by color adhesion and color change cards). A hot press test showed that the product provided by the present invention could withstand temperatures of 200°C. Furthermore, the heat transfer foil for wash labels, which combines a wash label carbon ribbon and a transfer foil, has a suitable structural design, a mature production process, and a simple preparation method, making it easy to promote and apply. Therefore, the present invention has great practical value and promotional significance. DETAILED DESCRIPTION

[0029] The present invention will be further explained below with reference to the examples. However, before introducing the specific examples, the performance of some materials in the following examples will be briefly described as follows.

[0030] High temperature resistant PET film, thickness 50um, heat deformation temperature ≥165℃, surface tension ≥42 dynes;

[0031] Ultra-thin polyester film, thickness 3.5um, tensile strength 320MPa, heat deformation temperature ≥150℃;

[0032] The performance requirements of polyurethane modified silicone resin are: molecular weight: 1000, glass transition temperature less than 60°C, and R-170S from Nissin Chemical Industry Co., Ltd. is selected;

[0033] The performance requirements of fumed silica are: specific surface area: 150-200m / g, DECONS E30 is selected;

[0034] PVB resin performance requirements: butyral group: 73.0-79.0%, viscosity 126mPa.s, WW-A-30 from Anhui Wanwei High-tech Materials Co., Ltd. is selected;

[0035] Acrylic resin: molecular weight 80,000-100,000, acid value <3.00 mgKOH / g, glass transition temperature Tg: 100°C, Mitsubishi acrylic resin Diana BR-73 is selected;

[0036] Chloroether resin: softening point 50-60℃, K value 35, chlorine content 44-48%; German BASF chloroether resin VC-COPOLYMER 40 is selected;

[0037] Montan OP wax emulsion: pH 7.0-9.0, melting point 110°C, viscosity ≤1500 (25°C), particle size ≤0.5μm; MD-2007 from Keim-Additec is used;

[0038] Polyethylene glycol: molecular weight 7000-9000, freezing point 55-65°C, hydroxyl value 12-16 mg KOH / g; polyethylene glycol PEG-8000 from Jiangsu Haian Petrochemical Co., Ltd.

[0039] Waterborne polyurethane resin: elongation at break 800-1000%, viscosity less than 450 mPa.s, pH 7.5-8.5; WPU2320C from Guangzhou Huigu Chemical is used;

[0040] Water-based polyester resin: molecular weight: 15,000, glass transition temperature 60°C, acid value 3-5mg KOH / g; Korean SK saturated polyester resin SKYBON EW-312 is selected;

[0041] Water-based acrylic resin: molecular weight 16,000-20,000, glass transition temperature <80°C, softening point 100°C, acid value 235mg KOH / g; Hanwha's Soluryl 160 was used;

[0042] Polyether modified polyurethane resin: pH value 7.5-9.0 (25°C), tensile strength 1-3MPa; SK-800A from Scribe New Materials Co., Ltd. is used;

[0043] Water-soluble carbon black: water-based coating carbon black N330 from Shijiazhuang Ruiyuan Mineral Products Co., Ltd.

[0044] In the following examples, the color fixative is Zhiyuan Xinke Chemical's multifunctional color fixative GL-637, the wetting and dispersing agent is BYK Chemical's DISPERBYK-2118. The hydrophobic additive is Evonik's TEGO-1650 hydrophobic agent from Germany. The wetting agent is BASF's WE 3323 hyperbranched polyether water-oil universal leveling agent. The adhesion promoter is Walker's VOK-B-515.71W, and the leveling agent is RK-8021 from Qingdao Shengshi New Materials Co., Ltd. The wetting agent is BASF's WE3323 hyperbranched polyether water-oil universal leveling agent, and the dispersant is Deyuder dispersant B6012.

[0045] Example 1

[0046] The heat transfer foil for wash labels provided in this embodiment comprises a transfer foil with an absorbent layer and a protective layer, and a heat transfer ribbon for use with it. When used, effective information is edited using a computer, and then the coating material of the heat transfer ribbon is melted by heating a specific area. The ribbon then adheres to the heat transfer foil for clothing with the absorbent layer and the protective layer. The heat transfer foil is then heated in a hot stamping machine, and the absorbent layer, protective layer, and ribbon print are transferred together to a printing substrate such as polyester, spandex, silk, or nylon.

[0047] The heat transfer foil for washing labels comprises a transfer foil with an absorption layer and a protective layer and a heat transfer carbon used in conjunction therewith. The transfer foil comprises a high-temperature resistant PET film base and an absorption layer and a protective layer sequentially coated on one side thereof.

[0048] The absorption layer has a mass ratio of polyurethane modified silicone resin: fumed silica: PVB resin = 4:5.5:0.5;

[0049] The protective layer comprises, by mass ratio, acrylic resin: chloroether resin: color fixing agent: wetting and dispersing agent: hydrophobic additive = 4:4.5:0.5:0.5:0.5;

[0050] The total thickness of the garment transfer foil is 56 μm, of which the base thickness is 50 μm, the absorption layer thickness is 3 μm, and the protective layer thickness is 3 μm.

[0051] The thermal transfer ribbon comprises a back coating layer coated on one side of an ultra-thin polyester film, and a release layer, an adhesive layer, and a coloring layer coated sequentially from the inside out on the other side of the ultra-thin polyester film;

[0052] The release layer has a mass ratio of montan OP wax emulsion: polyethylene glycol: wetting agent = 4.5:5.5:0.5;

[0053] The adhesive layer comprises, by mass ratio, waterborne polyurethane resin: waterborne polyester resin: waterborne acrylic resin: adhesion promoter: leveling agent = 2.5:3.5:3.0:0.5:0.5;

[0054] The coloring layer has a mass ratio of water-soluble carbon black: wetting agent: dispersant: polyether-modified polyurethane resin = 2.0:0.5:0.5:7.0;

[0055] The thermal transfer ribbon has a total thickness of 6.6 μm, including a 3.5 μm film, a 0.3 μm release layer, a 1.5 μm adhesive layer, and a 1.3 μm coloring layer.

[0056] Prepare thermal transfer ribbon

[0057] (1) Apply a back coating layer on one side of the tape base. Specifically, after mixing toluene and silicone-modified acrylic resin at a mass ratio of 9:1, apply the mixture evenly on one side of the tape base 1, dry it, and set aside.

[0058] (2) preparing a release layer on the other side of the tape base in step (1). Specifically, the montan OP wax emulsion and polyethylene glycol are mixed evenly with distilled water and isopropyl alcohol in a ratio of 4:3:3 by mass, and then a wetting agent is added. The mixture is dispersed and ground to a particle size of about 0.2-0.5 μm. The mixture is then evenly coated on the other side of the tape base and dried at 100°C-120°C to obtain a release layer for later use.

[0059] (3) preparing an adhesive layer on the surface of the release layer prepared in step (2), specifically, dissolving the water-based polyurethane resin, water-based polyester resin and water-based acrylic resin in distilled water at a mass ratio of 4:6 (water-based polyurethane resin + water-based polyester resin + water-based acrylic resin), mixing them evenly, adding an adhesion promoter and a leveling agent to disperse them evenly, and then evenly coating them on the surface of the release layer. After drying at 80-100°C, the adhesive layer is obtained;

[0060] (4) preparing a colored layer on the surface of the bonding layer prepared in step (3), specifically, dissolving the water-soluble carbon black and the polyether-modified polyurethane resin in distilled water at a mass ratio of 6:4 (water-soluble carbon black + polyether-modified polyurethane resin), and then adding a wetting agent and a dispersant to disperse and grind the mixture to a particle size of about 0.8-1 μm, and then evenly coating the mixture on the surface of the bonding layer. After drying at 90-100°C, the colored layer is obtained;

[0061] Prepare the transfer foil:

[0062] (5) Preparing an absorption layer on one side of the high-temperature resistant PET film. Specifically, the polyurethane modified silicone resin and the PVB resin are dissolved and mixed with butanone in a mass ratio of 3:3, and then fumed silica is added, dispersed and ground to a particle size of about 2-3 μm. The fumed silica is then evenly coated on one side of the high-temperature resistant PET film and dried at 80-100°C to obtain the absorption layer.

[0063] (6) A protective layer is prepared on the other side of the absorption layer prepared in step (5). Specifically, the acrylic resin and the chloroether resin are dissolved and mixed with toluene and butanone in a mass ratio of toluene: butanone: (acrylic resin + chloroether resin) = 3:3:4. A fixing agent, a wetting dispersant, and a hydrophobic additive are added and dissolved and mixed. The mixture is then coated on the surface of the absorption layer and dried at 80-100°C to obtain the protective layer.

[0064] Example 2

[0065] The heat transfer foil for wash labels provided in this embodiment comprises a transfer foil with an absorbent layer and a protective layer, and a heat transfer ribbon for use with the transfer foil. When used, effective information is edited using a computer, and then the coating material of the heat transfer ribbon is melted by heating a specific area. The ribbon is then bonded to the heat transfer foil for clothing with the absorbent layer and the protective layer. The heat transfer foil is then heated in a hot stamping machine, and the absorbent layer, protective layer, and ribbon print are transferred together to a printing substrate such as polyester, spandex, silk, or nylon.

[0066] The heat transfer foil for washing labels comprises a transfer foil with an absorption layer and a protective layer and a heat transfer carbon used in conjunction therewith. The transfer foil comprises a high-temperature resistant PET film base and an absorption layer and a protective layer sequentially coated on one side thereof.

[0067] The absorption layer has a mass ratio of polyurethane modified silicone resin: fumed silica: PVB resin = 3.5:5.5:1.0;

[0068] The protective layer comprises, by mass ratio, acrylic resin: chloroether resin: color fixing agent: wetting and dispersing agent: hydrophobic additive = 3.5:5.5:0.3:0.2:0.5;

[0069] The total thickness of the garment transfer foil is 60 μm, of which the base thickness is 50 μm, the absorption thickness is 5 μm, and the protective layer thickness is 5 μm;

[0070] The thermal transfer ribbon comprises a back coating layer coated on one side of an ultra-thin polyester film, and a release layer, an adhesive layer, and a coloring layer coated sequentially from the inside out on the other side of the ultra-thin polyester film;

[0071] The release layer has a mass ratio of montan OP wax emulsion: polyethylene glycol: wetting agent = 4.5:5.5:0.5;

[0072] The adhesive layer comprises, by mass ratio, waterborne polyurethane resin: waterborne polyester resin: waterborne acrylic resin: adhesion promoter: leveling agent = 2.5:3.5:3.0:0.5:0.5;

[0073] The coloring layer has a mass ratio of water-soluble carbon black: wetting agent: dispersant: polyether-modified polyurethane resin = 2.0:0.5:0.5:7.0;

[0074] The thermal transfer ribbon has a total thickness of 6.6 μm, including a 3.5 μm film, a 0.3 μm release layer, a 1.5 μm adhesive layer, and a 1.3 μm coloring layer.

[0075] Prepare thermal transfer ribbon

[0076] (1) Apply a back coating layer on one side of the tape base. Specifically, after mixing toluene and silicone-modified acrylic resin at a mass ratio of 9:1, apply the mixture evenly on one side of the tape base 1, dry it, and set aside.

[0077] (2) preparing a release layer on the other side of the tape base in step (1). Specifically, the montan OP wax emulsion and polyethylene glycol are mixed evenly with distilled water and isopropyl alcohol in a ratio of 4:3:3 by mass, and then a wetting agent is added. The mixture is dispersed and ground to a particle size of about 0.2-0.5 μm. The mixture is then evenly coated on the other side of the tape base and dried at 100°C-120°C to obtain a release layer for later use.

[0078] (3) preparing an adhesive layer on the surface of the release layer prepared in step (2), specifically, dissolving the water-based polyurethane resin, water-based polyester resin and water-based acrylic resin in distilled water at a mass ratio of 4:6 (water-based polyurethane resin + water-based polyester resin + water-based acrylic resin), mixing them evenly, adding an adhesion promoter and a leveling agent to disperse them evenly, and then evenly coating them on the surface of the release layer. After drying at 80-100°C, the adhesive layer is obtained;

[0079] (4) preparing a colored layer on the surface of the bonding layer prepared in step (3), specifically, dissolving the water-soluble carbon black and the polyether-modified polyurethane resin in distilled water at a mass ratio of 6:4 (water-soluble carbon black + polyether-modified polyurethane resin), and then adding a wetting agent and a dispersant to disperse and grind the mixture to a particle size of about 0.8-1 μm, and then evenly coating the mixture on the surface of the bonding layer. After drying at 90-100°C, the colored layer is obtained;

[0080] Prepare the transfer foil:

[0081] (5) Preparing an absorption layer on one side of the high-temperature resistant PET film. Specifically, the polyurethane modified silicone resin and the PVB resin are dissolved and mixed with butanone in a mass ratio of 3:3, and then fumed silica is added, dispersed and ground to a particle size of about 2-3 μm. The fumed silica is then evenly coated on one side of the high-temperature resistant PET film and dried at 80-100°C to obtain the absorption layer.

[0082] (6) A protective layer is prepared on the other side of the absorption layer prepared in step (5). Specifically, the acrylic resin and the chloroether resin are dissolved and mixed with toluene and butanone in a mass ratio of toluene: butanone: (acrylic resin + chloroether resin) = 3:3:4. A fixing agent, a wetting dispersant, and a hydrophobic additive are added and dissolved and mixed. The mixture is then coated on the surface of the absorption layer and dried at 80-100°C to obtain the protective layer.

[0083] Example 3

[0084] The heat transfer foil for wash labels provided in this embodiment comprises a transfer foil with an absorbent layer and a protective layer, and a heat transfer ribbon for use with the transfer foil. When used, effective information is edited using a computer, and then the coating material of the heat transfer ribbon is melted by heating a specific area. The ribbon is then bonded to the heat transfer foil for clothing with the absorbent layer and the protective layer. The heat transfer foil is then heated in a hot stamping machine, and the absorbent layer, protective layer, and ribbon print are transferred together to a printing substrate such as polyester, spandex, silk, or nylon.

[0085] The heat transfer foil for washing labels comprises a transfer foil with an absorption layer and a protective layer and a heat transfer carbon used in conjunction therewith. The transfer foil comprises an ultra-high temperature resistant PET film base and an absorption layer and a protective layer sequentially coated on one side thereof.

[0086] The absorption layer has a mass ratio of polyurethane modified silicone resin: fumed silica: PVB resin = 4:5.5:0.5;

[0087] The protective layer comprises, by mass ratio, acrylic resin: chloroether resin: color fixing agent: wetting and dispersing agent: hydrophobic additive = 4:4.5:0.5:0.5:0.5;

[0088] The total thickness of the garment transfer foil is 60 μm, of which the base thickness is 50 μm, the absorption thickness is 5 μm, and the protective layer thickness is 5 μm;

[0089] The thermal transfer ribbon comprises a back coating layer coated on one side of an ultra-thin polyester film, and a release layer, an adhesive layer, and a coloring layer coated sequentially from the inside out on the other side of the ultra-thin polyester film;

[0090] The release layer has a mass ratio of montan OP wax emulsion: polyethylene glycol: wetting agent = 4:5:1;

[0091] The adhesive layer comprises, by mass ratio, waterborne polyurethane resin: waterborne polyester resin: waterborne acrylic resin: adhesion promoter: leveling agent = 3:3:3.5:0.3:0.2;

[0092] The coloring layer has a mass ratio of water-soluble carbon black: wetting agent: dispersant: polyether-modified polyurethane resin = 2.0:0.5:0.5:7.0;

[0093] The thermal transfer ribbon has a total thickness of 7.3 μm, including a 3.5 μm film, a 0.5 μm release layer, a 1.8 μm adhesive layer, and a 1.5 μm coloring layer.

[0094] Prepare thermal transfer ribbon

[0095] (1) Apply a back coating layer on one side of the tape base. Specifically, after mixing toluene and silicone-modified acrylic resin at a mass ratio of 9:1, apply the mixture evenly on one side of the tape base 1, dry it, and set aside.

[0096] (2) preparing a release layer on the other side of the tape base in step (1). Specifically, the montan OP wax emulsion and polyethylene glycol are mixed evenly with distilled water and isopropyl alcohol in a ratio of 5:3:2 by mass, and then a wetting agent is added. The mixture is dispersed and ground to a particle size of about 0.2-0.5 μm. The mixture is then evenly coated on the other side of the tape base and dried at 100°C-120°C to obtain a release layer for later use.

[0097] (3) preparing an adhesive layer on the surface of the release layer prepared in step (2), specifically, dissolving the water-based polyurethane resin, water-based polyester resin and water-based acrylic resin in distilled water at a mass ratio of 5:5, adding an adhesion promoter and a leveling agent to disperse them evenly, and then evenly coating them on the surface of the release layer. After drying at 80-100°C, the adhesive layer is obtained;

[0098] (4) preparing a colored layer on the surface of the bonding layer prepared in step (3), specifically, dissolving the water-soluble carbon black and the polyether-modified polyurethane resin in distilled water at a mass ratio of 5:5 (water-soluble carbon black + polyether-modified polyurethane resin), mixing them evenly, adding a wetting agent and a dispersant to disperse and grind them to a particle size of about 0.8-1 μm, and then evenly coating them on the surface of the bonding layer. After drying at 90-100°C, the colored layer is obtained;

[0099] Prepare the transfer foil:

[0100] (5) preparing an absorption layer on one side of the high-temperature resistant PET film. Specifically, the polyurethane modified silicone resin and the PVB resin are dissolved and mixed with butanone in a mass ratio of 3:4 (polyurethane modified silicone resin + PVB resin). Then, fumed silica is added, dispersed, and ground to a particle size of about 2-3 μm. The fumed silica is then evenly coated on one side of the high-temperature resistant PET film and dried at 80-100°C to obtain the absorption layer.

[0101] (6) A protective layer is prepared on the other side of the absorption layer prepared in step (5). Specifically, the acrylic resin and the chloroether resin are dissolved and mixed with toluene and butanone in a mass ratio of toluene: butanone: (acrylic resin + chloroether resin) = 3:3:3, and then a fixing agent, a wetting dispersant, and a hydrophobic additive are added and dissolved and mixed, and then coated on the surface of the absorption layer. The protective layer is obtained after drying at 80-100°C.

[0102] Example 4

[0103] The heat transfer foil for wash labels provided in this embodiment comprises a transfer foil with an absorbent layer and a protective layer, and a heat transfer ribbon for use with the transfer foil. When used, effective information is edited using a computer, and then the coating material of the heat transfer ribbon is melted by heating a specific area. The ribbon is then bonded to the heat transfer foil for clothing with the absorbent layer and the protective layer. The heat transfer foil is then heated in a hot stamping machine, and the absorbent layer, protective layer, and ribbon print are transferred together to a printing substrate such as polyester, spandex, silk, or nylon.

[0104] The heat transfer foil for washing labels comprises a transfer foil with an absorption layer and a protective layer and a heat transfer carbon used in conjunction therewith. The transfer foil comprises a high-temperature resistant PET film base and an absorption layer coating and a protective layer coating sequentially coated on one side thereof.

[0105] The absorption layer has a mass percentage of polyurethane modified silicone resin: fumed silica: PVB resin = 3.5:6.0:0.5;

[0106] The protective layer, calculated by mass percentage, comprises acrylic resin: chloroether resin: color fixing agent: wetting and dispersing agent: hydrophobic additive in a ratio of 4:4.5:0.5:0.5:0.5;

[0107] The total thickness of the clothing transfer foil is 60 μm, of which the base thickness is 50 μm, the absorption thickness is 5 μm, and the protective layer thickness is 5 μm;

[0108] The thermal transfer ribbon comprises a back coating layer coated on one side of an ultra-thin polyester film, and a release layer, an adhesive layer, and a coloring layer coated sequentially from the inside out on the other side of the ultra-thin polyester film;

[0109] The release layer, calculated by mass percentage, is composed of montan OP wax emulsion: polyethylene glycol: wetting agent = 3.5:6.0:0.5;

[0110] The adhesive layer, in percentage by mass, comprises waterborne polyurethane resin: waterborne polyester resin: waterborne acrylic resin: adhesion promoter: leveling agent in a ratio of 2.5:3.5:3.0:0.5:0.5;

[0111] The coloring layer has a composition ratio of water-soluble carbon black: wetting agent: dispersant: polyether-modified polyurethane resin of 2.0:0.5:0.5:7.0 by mass percentage.

[0112] The thermal transfer ribbon has a total thickness of 7.3 μm, including a 3.5 μm film, a 0.5 μm release layer, a 1.8 μm adhesive layer, and a 1.5 μm coloring layer.

[0113] Prepare thermal transfer ribbon

[0114] (1) Apply a back coating layer on one side of the tape base. Specifically, after mixing toluene and silicone-modified acrylic resin at a mass ratio of 9:1, apply the mixture evenly on one side of the tape base 1, dry it, and set aside.

[0115] (2) preparing a release layer on the other side of the tape base in step (1). Specifically, the montan OP wax emulsion and polyethylene glycol are mixed evenly with distilled water and isopropyl alcohol in a ratio of 5:3:2 by mass, and then a wetting agent is added. The mixture is dispersed and ground to a particle size of about 0.2-0.5 μm. The mixture is then evenly coated on the other side of the tape base and dried at 100°C-120°C to obtain a release layer for later use.

[0116] (3) preparing an adhesive layer on the surface of the release layer prepared in step (2), specifically, dissolving the water-based polyurethane resin, water-based polyester resin and water-based acrylic resin in distilled water at a mass ratio of 5:5, adding an adhesion promoter and a leveling agent to disperse them evenly, and then evenly coating them on the surface of the release layer. After drying at 80-100°C, the adhesive layer is obtained;

[0117] (4) preparing a colored layer on the surface of the bonding layer prepared in step (3), specifically, dissolving the water-soluble carbon black and the polyether-modified polyurethane resin in distilled water at a mass ratio of 5:5 (water-soluble carbon black + polyether-modified polyurethane resin), mixing them evenly, adding a wetting agent and a dispersant to disperse and grind them to a particle size of about 0.8-1 μm, and then evenly coating them on the surface of the bonding layer. After drying at 90-100°C, the colored layer is obtained;

[0118] Prepare the transfer foil:

[0119] (5) preparing an absorption layer on one side of the high-temperature resistant PET film. Specifically, the polyurethane modified silicone resin and the PVB resin are dissolved and mixed with butanone in a mass ratio of 3:4 (polyurethane modified silicone resin + PVB resin). Then, fumed silica is added, dispersed, and ground to a particle size of about 2-3 μm. The fumed silica is then evenly coated on one side of the high-temperature resistant PET film and dried at 80-100°C to obtain the absorption layer.

[0120] (6) A protective layer is prepared on the other side of the absorption layer prepared in step (5). Specifically, the acrylic resin and the chloroether resin are dissolved and mixed with toluene and butanone in a mass ratio of toluene: butanone: (acrylic resin + chloroether resin) = 3:3:3, and then a fixing agent, a wetting dispersant, and a hydrophobic additive are added and dissolved and mixed, and then coated on the surface of the absorption layer. The protective layer is obtained after drying at 80-100°C.

[0121] Example 5

[0122] The heat transfer foil for wash labels provided in this embodiment comprises a transfer foil with an absorbent layer and a protective layer, and a heat transfer ribbon for use with the transfer foil. When used, effective information is edited using a computer, and then the coating material of the heat transfer ribbon is melted by heating a specific area. The ribbon is then bonded to the heat transfer foil for clothing with the absorbent layer and the protective layer. The heat transfer foil is then heated in a hot stamping machine, and the absorbent layer, protective layer, and ribbon print are transferred together to a printing substrate such as polyester, spandex, silk, or nylon.

[0123] The heat transfer foil for washing labels comprises a transfer foil with an absorption layer and a protective layer and a heat transfer carbon used in conjunction therewith. The transfer foil comprises a high-temperature resistant PET film base and an absorption layer coating and a protective layer coating sequentially coated on one side thereof.

[0124] The absorption layer has a mass ratio of polyurethane modified silicone resin: fumed silica: PVB resin = 3.5:6.0:0.5;

[0125] The protective layer, calculated by mass percentage, comprises acrylic resin: chloroether resin: color fixing agent: wetting and dispersing agent: hydrophobic additive in a ratio of 5.0:4.0:0.3:0.3:0.4;

[0126] The total thickness of the clothing transfer foil is 60 μm, of which the base thickness is 50 μm, the absorption thickness is 5 μm, and the protective layer thickness is 5 μm;

[0127] The thermal transfer ribbon comprises a back coating layer coated on one side of an ultra-thin polyester film, and a release layer, an adhesive layer, and a coloring layer coated sequentially from the inside out on the other side of the ultra-thin polyester film;

[0128] The release layer, calculated by mass percentage, is composed of montan OP wax emulsion: polyethylene glycol: wetting agent = 3.5:6.0:0.5;

[0129] The adhesive layer, in percentage by mass, comprises waterborne polyurethane resin: waterborne polyester resin: waterborne acrylic resin: adhesion promoter: leveling agent in a ratio of 3.5:2.5:3.0:0.5:0.5;

[0130] The coloring layer has a mass percentage of water-soluble carbon black: wetting agent: dispersant: polyether-modified polyurethane resin = 2.5:0.2:0.3:7.0;

[0131] The thermal transfer ribbon has a total thickness of 7.3 μm, including a 3.5 μm film, a 0.5 μm release layer, a 1.8 μm adhesive layer, and a 1.5 μm coloring layer.

[0132] Prepare thermal transfer ribbon

[0133] (1) Apply a back coating layer on one side of the tape base. Specifically, after mixing toluene and silicone-modified acrylic resin at a mass ratio of 9:1, apply the mixture evenly on one side of the tape base 1, dry it, and set aside.

[0134] (2) preparing a release layer on the other side of the tape base in step (1). Specifically, the montan OP wax emulsion and polyethylene glycol are mixed evenly with distilled water and isopropyl alcohol in a ratio of 3:4:3 by mass, and then a wetting agent is added. The mixture is dispersed and ground to a particle size of about 0.2-0.5 μm. The mixture is then evenly coated on the other side of the tape base and dried at 100°C-120°C to obtain a release layer for later use.

[0135] (3) preparing an adhesive layer on the surface of the release layer prepared in step (2), specifically, dissolving the water-based polyurethane resin, water-based polyester resin and water-based acrylic resin in distilled water at a mass ratio of 4:6 (water-based polyurethane resin + water-based polyester resin + water-based acrylic resin), mixing them evenly, adding an adhesion promoter and a leveling agent to disperse them evenly, and then evenly coating them on the surface of the release layer. After drying at 80-100°C, the adhesive layer is obtained;

[0136] (4) preparing a colored layer on the surface of the bonding layer prepared in step (3), specifically, dissolving the water-soluble carbon black and the polyether-modified polyurethane resin in distilled water at a mass ratio of 7:3 (water-soluble carbon black + polyether-modified polyurethane resin), mixing them evenly, adding a wetting agent and a dispersant to disperse and grind them to a particle size of about 0.8-1 μm, and then evenly coating them on the surface of the bonding layer. After drying at 90-100°C, the colored layer is obtained;

[0137] Prepare the transfer foil:

[0138] (5) Preparing an absorption layer on one side of the high-temperature resistant PET film. Specifically, the polyurethane modified silicone resin and the PVB resin are dissolved and mixed with butanone in a mass ratio of 3:3, and then fumed silica is added, dispersed and ground to a particle size of about 2-3 μm. The fumed silica is then evenly coated on one side of the high-temperature resistant PET film and dried at 80-100°C to obtain the absorption layer.

[0139] (6) A protective layer is prepared on the other side of the absorption layer prepared in step (5). Specifically, the acrylic resin and the chloroether resin are dissolved and mixed with toluene and butanone in a ratio of toluene: butanone: (acrylic resin + chloroether resin) = 3:3:2 by mass. A fixing agent, a wetting dispersant, and a hydrophobic additive are added and dissolved and mixed. The mixture is then coated on the surface of the absorption layer and dried at 80-100°C to obtain the protective layer.

[0140] Example 6

[0141] The heat transfer foil for wash labels provided in this embodiment comprises a transfer foil with an absorbent layer and a protective layer, and a heat transfer ribbon for use with the transfer foil. When used, effective information is edited using a computer, and then the coating material of the heat transfer ribbon is melted by heating a specific area. The ribbon is then bonded to the heat transfer foil for clothing with the absorbent layer and the protective layer. The heat transfer foil is then heated in a hot stamping machine, and the absorbent layer, protective layer, and ribbon print are transferred together to a printing substrate such as polyester, spandex, silk, or nylon.

[0142] The heat transfer foil for washing labels comprises a transfer foil with an absorption layer and a protective layer and a heat transfer carbon used in conjunction therewith. The transfer foil comprises a high-temperature resistant PET film tape base and an absorption layer coating and a protective layer coating sequentially coated on one side thereof.

[0143] The absorption layer has a mass percentage of polyurethane modified silicone resin: fumed silica: PVB resin = 3.5:6.0:0.5;

[0144] The protective layer, calculated by mass percentage, comprises acrylic resin: chloroether resin: color fixing agent: wetting and dispersing agent: hydrophobic additive in a ratio of 5.0:4.0:0.3:0.3:0.4;

[0145] The total thickness of the clothing transfer foil is 60 μm, of which the base thickness is 50 μm, the absorption thickness is 5 μm, and the protective layer thickness is 5 μm;

[0146] The thermal transfer ribbon comprises a back coating layer coated on one side of an ultra-thin polyester film, and a release layer, an adhesive layer, and a coloring layer coated sequentially from the inside out on the other side of the ultra-thin polyester film;

[0147] The release layer, calculated by mass percentage, is composed of montan OP wax emulsion: polyethylene glycol: wetting agent = 3.5:6.0:0.5;

[0148] The adhesive layer, in percentage by mass, comprises waterborne polyurethane resin: waterborne polyester resin: waterborne acrylic resin: adhesion promoter: leveling agent in a ratio of 3.5:3.5:2.0:0.5:0.5;

[0149] The coloring layer has a mass percentage of water-soluble carbon black: wetting agent: dispersant: polyether-modified polyurethane resin = 2.5:0.2:0.3:7.0;

[0150] The thermal transfer ribbon has a total thickness of 7.3 μm, including a 3.5 μm film, a 0.5 μm release layer, a 1.8 μm adhesive layer, and a 1.5 μm coloring layer.

[0151] Prepare thermal transfer ribbon

[0152] (1) Apply a back coating layer on one side of the tape base. Specifically, after mixing toluene and silicone-modified acrylic resin at a mass ratio of 9:1, apply the mixture evenly on one side of the tape base 1, dry it, and set aside.

[0153] (2) preparing a release layer on the other side of the tape base in step (1). Specifically, the montan OP wax emulsion and polyethylene glycol are mixed evenly with distilled water and isopropyl alcohol in a ratio of 3:4:3 by mass, and then a wetting agent is added. The mixture is dispersed and ground to a particle size of about 0.2-0.5 μm. The mixture is then evenly coated on the other side of the tape base and dried at 100°C-120°C to obtain a release layer for later use.

[0154] (3) preparing an adhesive layer on the surface of the release layer prepared in step (2), specifically, dissolving the water-based polyurethane resin, water-based polyester resin and water-based acrylic resin in distilled water at a mass ratio of 4:6 (water-based polyurethane resin + water-based polyester resin + water-based acrylic resin), mixing them evenly, adding an adhesion promoter and a leveling agent to disperse them evenly, and then evenly coating them on the surface of the release layer. After drying at 80-100°C, the adhesive layer is obtained;

[0155] (4) preparing a colored layer on the surface of the bonding layer prepared in step (3), specifically, dissolving the water-soluble carbon black and the polyether-modified polyurethane resin in distilled water at a mass ratio of 7:3 (water-soluble carbon black + polyether-modified polyurethane resin), mixing them evenly, adding a wetting agent and a dispersant to disperse and grind them to a particle size of about 0.8-1 μm, and then evenly coating them on the surface of the bonding layer. After drying at 90-100°C, the colored layer is obtained;

[0156] Prepare the transfer foil:

[0157] (5) Preparing an absorption layer on one side of the high-temperature resistant PET film. Specifically, the polyurethane modified silicone resin and the PVB resin are dissolved and mixed with butanone in a mass ratio of 3:3, and then fumed silica is added, dispersed and ground to a particle size of about 2-3 μm. The fumed silica is then evenly coated on one side of the high-temperature resistant PET film and dried at 80-100°C to obtain the absorption layer.

[0158] (6) A protective layer is prepared on the other side of the absorption layer prepared in step (5). Specifically, the acrylic resin and the chloroether resin are dissolved and mixed with toluene and butanone in a ratio of toluene: butanone: (acrylic resin + chloroether resin) = 3:3:2 by mass. A fixing agent, a wetting dispersant, and a hydrophobic additive are added and dissolved and mixed. The mixture is then coated on the surface of the absorption layer and dried at 80-100°C to obtain the protective layer.

[0159] The heat transfer foil films for wash labels prepared in the above embodiments were tested for color fastness to washing with soap through a wash color fastness test (the products were printed on a substrate, and the transferred wash labels were tested with reference to GB / T3921 "Textiles - Tests for Color Fastness - Color Fastness to Washing with Soap"). The products of each embodiment were tested under different test conditions. The heat transfer foil films for wash labels provided by the present invention had a color fastness to washing of ≥ level 4. A rubbing color fastness test (tested with reference to the method of GB / T 3920 "Textiles - Tests for Color Fastness - Color Fastness to Rubbing") showed that the heat transfer foil films for wash labels provided by the present invention had a color fastness to rubbing of > level 4. A hot press test (tested with reference to the method of GB / T 6152 "Textiles - Tests for Color Fastness - Color Fastness to Hot Pressing") showed that the products provided by the present invention could withstand high temperatures of 200°C.

Claims

1. A heat transfer foil film for wash labels, characterized in that: The invention relates to a transfer foil film with an absorption layer and a protective layer and a heat transfer carbon ribbon for use therewith, wherein the heat transfer carbon ribbon comprises a first tape base (1), a back coating layer coated on one side of the first tape base (1), and a release layer, an adhesive layer, and a coloring layer coated on the other side of the first tape base (1) in sequence from the inside to the outside; the transfer foil film comprises a second tape base (2) and an absorption layer and a protective layer coated on one side of the second tape base (2) in sequence; In terms of mass percentage, the raw material ratio of the absorption layer is: 35-45% of polyurethane modified silicone resin, 55-70% of fumed silica, and 5-10% of PVB resin; The raw material ratio of the protective layer is: acrylic resin 35-50%, color fixing agent 2-5%, wetting and dispersing agent 2-5%, hydrophobic additive 2-5%, and the balance is chloroether resin.

2. The heat transfer foil film for wash labels according to claim 1, wherein: The total thickness of the transfer foil is 55-60 μm, wherein the thickness of the absorption layer is 3-5 μm, and the thickness of the protection layer is 3-5 μm.

3. The heat transfer foil film for wash labels according to claim 1, wherein: Calculated by mass percentage, the raw material ratio of the release layer is: 35-45% of montan OP wax emulsion, 5-10% of wetting agent, and the balance of polyethylene glycol.

4. The heat transfer foil film for wash labels according to claim 1, wherein: The ratio of the raw materials of the bonding layer is as follows, by mass percentage: 25-35% waterborne polyurethane resin, 25-35% waterborne polyester resin, 2-5% adhesion promoter, 2-5% leveling agent, and the balance is waterborne acrylic resin.

5. The heat transfer foil film for wash label according to claim 1, wherein: Calculated by mass percentage, the raw material ratio of the coloring layer is: 20-25% water-soluble carbon black, 2-5% wetting agent, 3-5% dispersant, and the balance is polyether-modified polyurethane resin.

6. The heat transfer foil for wash label according to claim 1, wherein: The total thickness of the thermal transfer ribbon is 6-7.5um, the thickness of the release layer is 0.3-0.5um, the thickness of the adhesive layer is 1.5-1.8um, and the thickness of the coloring layer is 1.3-1.5um.

7. The method for preparing the heat transfer foil for wash labels according to any one of claims 1 to 6, characterized in that: The steps include: a. Prepare thermal transfer ribbon (1) Applying a back coating layer on one side of the first tape base (1) and drying it for later use; (2) preparing a release layer on the other side of the first tape base (1) obtained in step (1); mixing the montan OP wax emulsion and polyethylene glycol with distilled water and isopropyl alcohol, adding a wetting agent, dispersing and grinding to a particle size of 0.2-0.5 μm, and then evenly coating the other side of the first tape base (1), and drying at 100°C-120°C to obtain a release layer; (3) preparing an adhesive layer on the surface of the release layer prepared in step (2); dissolving and mixing the water-based polyurethane resin, water-based polyester resin and water-based acrylic resin with distilled water, adding an adhesion promoter and a leveling agent to disperse them evenly, and then evenly coating them on the surface of the release layer, and drying them at 80-100°C to obtain the adhesive layer; (4) A colored layer is prepared on the surface of the bonding layer prepared in step (3). The water-soluble carbon black and polyether-modified polyurethane resin are dissolved and mixed with distilled water, and then a wetting agent and a dispersant are added to disperse and grind the mixture to a particle size of 0.8 to 1 μm. The mixture is then evenly coated on the surface of the bonding layer and dried at 90-100°C to obtain the colored layer. b. Prepare transfer foil: (5) preparing an absorption layer on one side of the second tape base (2), dissolving the polyurethane modified silicone resin and PVB resin with butanone, adding fumed silica, dispersing and grinding until the particle size reaches 2-3 μm, and then evenly coating the surface of one side of the second tape base (2), and drying at 80-100°C to obtain the absorption layer; (6) Prepare a protective layer on the other side of the absorption layer prepared in step (5). Dissolve the acrylic resin and chloroether resin with toluene and butanone, mix them evenly, add a color fixative, a wetting dispersant and a hydrophobic additive, disperse them evenly, and then apply them on the surface of the absorption layer. After drying at 80-100°C, the protective layer is obtained.