High adhesion water transfer printing paper and method of making same

Abstract

The application discloses a high-adhesion water transfer printing paper and a preparation method thereof. The high-adhesion water transfer printing paper comprises a back adhesive layer, a base paper, a pigment coating layer, a toughening layer and a hydrosol layer which are sequentially arranged in layers. The toughening layer is formed by drying a toughening coating, and the toughening coating comprises the following raw materials in parts by mass: water 60-80 parts, a defoaming agent 0.1-0.8 parts, a wetting agent 0.1-0.3 parts, acetylated di-starch phosphate 6-8 parts, water-based butadiene-styrene latex 15-20 parts and a water-resistant agent 0.5-1 part. The high-adhesion water transfer printing paper and the preparation method thereof have the advantages that the combination between the hydrosol layer and the pigment coating layer is improved by adding the toughening layer, the technical problem of unclear patterns caused by easy peeling between layers is solved, the printing effect in the water transfer printing process is improved, and the defects in the prior art are overcome.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water transfer printing, in particular to a high-adhesion water transfer printing paper and a preparation method thereof. BACKGROUND

[0002] The water transfer printing paper is a product for realizing graphic printing transfer. The water transfer printing paper uses a special paper as a base paper. The special paper refers to a paper with special functions made by using a paper machine to make different fibers. Three times of surface sizing are performed on the surface of the base paper to form a pigment coating layer, a diaphragm glue layer and a dissolving glue layer in sequence. The diaphragm glue layer and the dissolving glue layer are collectively referred to as a water-soluble glue layer. The dissolving glue layer needs to have good sliding property. After the three times of surface sizing on the front surface, one more sizing is performed on the back surface of the base paper to form a back glue layer, so as to achieve the purpose of paper shaping and stable structure.

[0003] When the water transfer printing paper is used, a printing machine is used to print various exquisite patterns or precious metal pigments on the surface of the base paper, so as to give the product a high value, which is referred to as a water transfer printing paper. After the printing is completed, the water transfer printing paper is separated from the patterns by using water pressure, and then the water transfer printing paper is used to transfer the exquisite patterns to the surface of a printing object by using a water mark transfer method, so as to form an exquisite and high-grade appearance effect.

[0004] The water transfer printing paper needs to have a certain binding force between the layers, so as to avoid falling off during use. However, the binding force between the water-soluble glue layer and the pigment coating layer in the existing water transfer printing paper is generally poor, which causes the layers to easily fall off and generate paper powder or paper dust, greatly affecting the clarity of the printed patterns. In addition, a small number of water transfer printing papers also have the problem of residue during the baking process. SUMMARY

[0005] The present application aims to provide a high-adhesion water transfer printing paper and a preparation method thereof. The binding force between the water-soluble glue layer and the pigment coating layer is improved by adding a toughening layer, so as to solve the technical problem of unclear patterns caused by the easy falling off of the layers, improve the printing effect of the water transfer printing process, and overcome the shortcomings in the prior art.

[0006] To achieve the above purpose, the present application adopts the following technical solutions:

[0007] A high-adhesion water transfer printing paper, comprising a back glue layer, a base paper, a pigment coating layer, a toughening layer and a water-soluble glue layer which are sequentially stacked.

[0008] The toughening layer is formed by drying a toughening coating material. The toughening coating material comprises the following raw materials in terms of mass fraction: water 60-80 parts, defoaming agent 0.1-0.8 parts, wetting agent 0.1-0.3 parts, acetylated di-starch phosphate 6-8 parts, water-based butyl styrene latex 15-20 parts and water repellent 0.5-1 part.

[0009] Preferably, the water-resistant agent is zirconium ammonium carbonate cross-linking water-resistant agent.

[0010] Preferably, the hydrosol layer comprises a diaphragm glue layer and a dissolving glue layer, and the diaphragm glue layer is in contact with the toughening layer.

[0011] A method for preparing a high-adhesion water transfer printing paper, for preparing the high-adhesion water transfer printing paper, comprising the following steps:

[0012] A. using a printing machine to print a preset pattern on the surface of the base paper to obtain a pigment coating layer;

[0013] B. preparing a toughening coating, uniformly coating the toughening coating on the surface of the pigment coating layer, and obtaining a toughening layer after drying;

[0014] C. preparing a hydrosol, uniformly coating the hydrosol on the surface of the toughening layer, and obtaining a hydrosol layer after drying;

[0015] D. preparing a back glue, uniformly coating the back glue on the back surface of the base paper, obtaining a back glue layer after drying, and preparing the high-adhesion water transfer printing paper.

[0016] Preferably, in step B, the coating amount of the toughening coating is 3-5 g / m 2 .

[0017] Preferably, in step B, the preparation of the toughening coating comprises the following steps:

[0018] B1. adding a formula amount of water into a dispersion kettle, adding a formula amount of acetylated dextrin phosphate into the dispersion kettle while stirring, and heating to 90-100 DEG C for 1 h to obtain a mixed solution I;

[0019] B2. cooling the mixed solution I to 40-50 DEG C, adding a formula amount of defoaming agent, wetting agent and water-resistant agent into the dispersion kettle while stirring to obtain a mixed solution II;

[0020] B3. adding a formula amount of water-based styrene-butadiene latex into the dispersion kettle while stirring, and stirring for 30 min to obtain the toughening coating.

[0021] Preferably, in steps B2 and B3, the stirring speed of the stirring step is 1000-1500 r / min.

[0022] The technical scheme provided by the embodiment of the application can have the following beneficial effects:

[0023] 1. The toughening layer is additionally arranged between the pigment coating layer and the hydrosol layer to enhance the interlayer bonding force, so that the toughening layer has good bonding force with both the pigment coating layer and the hydrosol layer, thereby solving the technical problem of unclear pattern caused by easy peeling between layers and improving the printing effect in the water transfer printing process.

[0024] 2, the toughening layer is dried by a toughening coating, and raw materials of the toughening coating include water, a defoaming agent, a wetting agent, acetylated distarch phosphate, water-based butadiene styrene latex and a water-resistant agent. The key component of the toughening coating is the water-based butadiene styrene latex, which is used to provide high bonding force for the toughening coating; the water and the acetylated distarch phosphate are used in combination to effectively adjust the viscosity of the coating, so as to ensure the coating property of the coating; and the three functional additives, i.e., the defoaming agent, the wetting agent and the water-resistant agent, provide the coating with corresponding defoaming, wetting and water resistance, so as to improve the printing suitability of the coating.

[0025] 3, the toughening layer can effectively improve the bonding force between the pigment coating and the hydrosol layer, so that the water transfer printing paper basically does not fall off during use, and the residual problem caused by paper dust is reduced; meanwhile, the high interlayer adhesion force can effectively reduce the screen blocking problem in the screen printing process, so that the printed pattern is clearer, and thus the printing effect is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a schematic diagram of the layer structure of the high-adhesion water transfer printing paper.

[0027] Among them: back adhesive layer 1, base paper 2, pigment coating 3, toughening layer 4, hydrosol layer 5, diaphragm adhesive layer 51, dissolving adhesive layer 52. DETAILED DESCRIPTION

[0028] A high-adhesion water transfer printing paper, comprising a back adhesive layer 1, a base paper 2, a pigment coating 3, a toughening layer 4 and a hydrosol layer 5 which are sequentially stacked.

[0029] The toughening layer 4 is dried by a toughening coating, and according to the mass fraction, the toughening coating includes the following raw materials: water 60-80 parts, a defoaming agent 0.1-0.8 parts, a wetting agent 0.1-0.3 parts, acetylated distarch phosphate 6-8 parts, water-based butadiene styrene latex 15-20 parts and a water-resistant agent 0.5-1 part.

[0030] In the existing water transfer printing paper, the bonding force between the hydrosol layer and the pigment coating is generally poor, which leads to easy falling off between the layers and generates paper powder or paper dust, greatly affecting the clarity of the printed pattern, and a few also have residual problems during the baking process.

[0031] Therefore, in order to improve the bonding force between the hydrosol layer and the pigment coating and solve the technical problem of unclear pattern caused by easy falling off between the layers, the technical solution provides a high-adhesion water transfer printing paper, as shown in Figure 1As shown, the toughening layer 4 is added between the pigment coating layer 3 and the hydrosol layer 5 to enhance the interlayer bonding force, so that the toughening layer 4 has good bonding force to both the pigment coating layer 3 and the hydrosol layer 5, thereby solving the technical problem of unclear pattern caused by easy peeling between layers and improving the printing effect of the water transfer printing process.

[0032] Specifically, the toughening layer 4 is formed by drying the toughening coating, and the raw materials of the toughening coating include water, defoaming agent, wetting agent, acetylated distarch phosphate, water-based styrene-butadiene latex, and water-resistant agent. Among them, the key component of the toughening coating is the water-based styrene-butadiene latex, which is used to provide the toughening coating with high bonding force; the use of water and acetylated distarch phosphate can effectively adjust the viscosity of the coating to ensure the coating property; and the three functional additives of defoaming agent, wetting agent, and water-resistant agent provide the coating with corresponding defoaming, wetting, and water resistance, so as to improve the printing suitability of the coating.

[0033] The toughening layer 4 added in the present solution can effectively improve the bonding force between the pigment coating layer 3 and the hydrosol layer 5, so that the water transfer printing paper basically does not have the problem of peeling during use, and the residual problem caused by paper scraps is reduced; at the same time, the high interlayer adhesion can also effectively reduce the screen printing problem, so that the printed pattern is clearer, thereby effectively improving the printing effect.

[0034] It should be noted that the functional additives used in the present solution are all conventional functional additives in the art, which can be purchased through market channels, and the specific components of each functional additive will not be described here.

[0035] Further, the water-resistant agent is a zirconium ammonium carbonate crosslinking water-resistant agent.

[0036] In a preferred embodiment of the present technical solution, the zirconium ammonium carbonate crosslinking water-resistant agent is used as the water resistance in the toughening coating, which is more conducive to increasing the water resistance of the toughening layer 4.

[0037] Further, the hydrosol layer 5 includes a diaphragm glue layer 51 and a dissolved glue layer 52, and the diaphragm glue layer 51 is in contact with the toughening layer 4.

[0038] A method for preparing a high-adhesion water transfer printing paper is used to prepare the high-adhesion water transfer printing paper described above, which includes the following steps:

[0039] A. Using a printing machine to print a predetermined pattern on the surface of the base paper 2 to obtain a pigment coating layer 3;

[0040] B. Preparing a toughening coating, uniformly coating the toughening coating on the surface of the pigment coating layer 3, and drying to obtain a toughening layer 4;

[0041] C. preparing a hydrosol, uniformly coating the hydrosol on the surface of the toughening layer 4, and obtaining the hydrosol layer 5 after drying;

[0042] D. preparing a back adhesive, uniformly coating the back adhesive on the back of the base paper 2, and obtaining the back adhesive layer 1 after drying, and preparing the high-adhesion water transfer printing paper.

[0043] The present application also provides a method for preparing the high-adhesion water transfer printing paper, which has simple steps and strong operability, and is beneficial to simplifying the production process while ensuring the printing suitability.

[0044] Further, in step B, the coating amount of the toughening coating is 3-5 g / m 2 .

[0045] As a preferred embodiment of the above embodiment, the present application preferably has a coating amount of the toughening coating of 3-5 g / m 2 . If the coating amount of the toughening coating is too low, the bonding force between the pigment coating layer 3 and the hydrosol layer 5 is difficult to guarantee; if the coating amount of the toughening coating is too high, the water permeability of the water transfer printing paper is easily affected.

[0046] Further, in step B, the preparation of the toughening coating comprises the following steps:

[0047] B1. adding a formula amount of water into a dispersion kettle, adding a formula amount of acetylated dextrin phosphate into the dispersion kettle while stirring, and heating to 90-100°C for 1 h to obtain a mixed solution I;

[0048] B2. cooling the mixed solution I to 40-50°C, adding a formula amount of defoaming agent, wetting agent and water resistance agent into the dispersion kettle while stirring to obtain a mixed solution II;

[0049] B3. adding a formula amount of water-based styrene-butadiene latex into the dispersion kettle while stirring, and stirring for 30 min to obtain the toughening coating.

[0050] Further, in steps B2 and B3, the stirring speed of the stirring step is 1000-1500 r / min.

[0051] In steps B2 and B3 of producing the high-adhesion water transfer printing paper, the mixed solution I and each functional additive and water-based styrene-butadiene latex are mixed by using a higher stirring speed, which is helpful to the rapid and uniform dispersion of the raw materials; at the same time, the use of a too high stirring speed to stir the raw materials is avoided to prevent the shear force from being too large to weaken the performance of the coating.

[0052] The technical solutions of the present application are further described below through specific embodiments.

[0053] Embodiment 1

[0054] A, printing a preset pattern I on the surface of the base paper by using a printing machine to obtain a pigment coating layer;

[0055] B, preparing a toughening coating, uniformly coating the toughening coating on the surface of the pigment coating layer, and obtaining a toughening layer after drying; wherein the coating amount of the toughening coating is 3g / m 2 , according to mass fraction, the toughening coating includes the following raw materials: water 60 parts, defoaming agent 0.1 part, wetting agent 0.1 part, acetylated di-starch phosphate 6 parts, water-based styrene-butadiene latex 15 parts and zirconium ammonium carbonate crosslinking water-resistant agent 0.5 part;

[0056] C, preparing a hydrosol, uniformly coating the hydrosol on the surface of the toughening layer, and obtaining a hydrosol layer after drying;

[0057] D, preparing a back adhesive, uniformly coating the back adhesive on the back surface of the base paper, and obtaining a back adhesive layer after drying to prepare a high-adhesion water transfer printing paper.

[0058] Example 2

[0059] A, printing a preset pattern II on the surface of the base paper by using a printing machine to obtain a pigment coating layer;

[0060] B, preparing a toughening coating, uniformly coating the toughening coating on the surface of the pigment coating layer, and obtaining a toughening layer after drying; wherein the coating amount of the toughening coating is 4g / m 2 , according to mass fraction, the toughening coating includes the following raw materials: water 70 parts, defoaming agent 0.4 part, wetting agent 0.2 part, acetylated di-starch phosphate 7 parts, water-based styrene-butadiene latex 18 parts and zirconium ammonium carbonate crosslinking water-resistant agent 0.7 part;

[0061] C, preparing a hydrosol, uniformly coating the hydrosol on the surface of the toughening layer, and obtaining a hydrosol layer after drying;

[0062] D, preparing a back adhesive, uniformly coating the back adhesive on the back surface of the base paper, and obtaining a back adhesive layer after drying to prepare a high-adhesion water transfer printing paper.

[0063] Example 3

[0064] A, printing a preset pattern III on the surface of the base paper by using a printing machine to obtain a pigment coating layer;

[0065] B, preparing a toughening coating, uniformly coating the toughening coating on the surface of the pigment coating layer, and obtaining a toughening layer after drying; wherein the coating amount of the toughening coating is 5g / m 2 , according to mass fraction, the toughening coating includes the following raw materials: water 80 parts, defoaming agent 0.8 part, wetting agent 0.3 part, acetylated di-starch phosphate 8 parts, water-based styrene-butadiene latex 20 parts and zirconium ammonium carbonate crosslinking water-resistant agent 1 part;

[0066] C. preparing a hydrosol, uniformly coating the hydrosol on the surface of the toughening layer, and obtaining a hydrosol layer after drying;

[0067] D. preparing a back adhesive, uniformly coating the back adhesive on the back of the base paper, and obtaining a back adhesive layer after drying to prepare the high-adhesion water transfer printing paper.

[0068] The water transfer printing paper prepared in Examples 1-3 of the present application is used for water transfer printing, and no problems of falling off and residue occur in the use process; at the same time, no screen blocking problem occurs in the silk screen printing process, and the printed pattern is clear.

[0069] The technical principles of the present application are described above in combination with specific examples. These descriptions are only for explaining the principles of the present application, and cannot be interpreted as limiting the protection scope of the present application in any way. Based on the explanations herein, other specific embodiments of the present application can be conceived by those skilled in the art without creative labor, and these embodiments will fall within the protection scope of the present application.

Claims

1. A high adhesion water transfer printing paper, characterized by, The high-adhesion water transfer printing paper comprises a back adhesive layer, a base paper, a pigment coating layer, a toughening layer and a hydrosol layer which are sequentially arranged. The toughening layer is obtained by drying the toughening coating, and the toughening coating comprises the following raw materials in parts by mass: water 60-80 parts, defoaming agent 0.1-0.8 parts, wetting agent 0.1-0.3 parts, acetylated distarch phosphate 6-8 parts, water-based butadiene-styrene latex 15-20 parts and water-resistant agent 0.5-1 part. The preparation method of the high-adhesion water transfer printing paper comprises the following steps: A. printing a preset pattern on the surface of the base paper by using a printing machine to obtain a pigment coating layer; B. preparing a toughening coating, uniformly applying the toughening coating on the surface of the pigment coating layer, and drying to obtain a toughening layer; C. preparing a hydrosol, uniformly applying the hydrosol on the surface of the toughening layer, and drying to obtain a hydrosol layer; D. preparing a back adhesive, uniformly applying the back adhesive on the back surface of the base paper, and drying to obtain a back adhesive layer and prepare the high-adhesion water transfer printing paper.

2. The high adhesion water transfer printing paper according to claim 1, characterized in that, The water-resistant agent is zirconium ammonium carbonate crosslinking water-resistant agent.

3. The high adhesion water transfer printing paper according to claim 1, characterized in that, The hydrosol layer comprises a diaphragm glue layer and a dissolved glue layer, and the diaphragm glue layer is in contact with the toughening layer.

4. A method for preparing a high adhesion water transfer printing paper, characterized by, The preparation method of the high-adhesion water transfer printing paper comprises the following steps: A. printing a preset pattern on the surface of the base paper by using a printing machine to obtain a pigment coating layer; B. preparing a toughening coating, uniformly applying the toughening coating on the surface of the pigment coating layer, and drying to obtain a toughening layer; C. preparing a hydrosol, uniformly applying the hydrosol on the surface of the toughening layer, and drying to obtain a hydrosol layer; D. preparing a back adhesive, uniformly applying the back adhesive on the back surface of the base paper, and drying to obtain a back adhesive layer and prepare the high-adhesion water transfer printing paper.

5. The method for preparing a high-adhesion water transfer printing paper according to claim 4, characterized in that, In step B, the coating amount of the toughening coating is 3-5 g / m².

6. The method for preparing a high-adhesion water transfer printing paper according to claim 4, characterized in that, In step B, the preparation of the toughening coating comprises the following steps: B1. adding a formula amount of water into a dispersion kettle, adding a formula amount of acetylated distarch phosphate into the dispersion kettle while stirring, and heating to 90-100°C for 1 h to obtain a mixed solution I; B2. cooling the mixed solution I to 40-50°C, adding a formula amount of defoaming agent, wetting agent and water-resistant agent into the dispersion kettle while stirring to obtain a mixed solution II; B3. adding a formula amount of water-based butadiene-styrene latex into the dispersion kettle while stirring, and stirring for 30 min to obtain the toughening coating.

7. The method for preparing a high-adhesion water transfer printing paper according to claim 6, characterized in that, In steps B2 and B3, the stirring speed of the stirring step is 1000-1500 r / min.

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