Fireproof wallboard transfer printing film and preparation process thereof

Abstract

The invention discloses a fireproof wallboard transfer printing film and a preparation process thereof, and belongs to the technical field of transfer printing films, the fireproof wallboard transfer printing film comprises a base material layer, a coating, a transfer printing pattern layer and a protective layer, the coating is arranged on the base material layer, the transfer printing pattern layer is arranged on the coating, and the protective layer is arranged on the transfer printing pattern layer. The problem that when an existing transfer printing film is used, the wear resistance and adhesiveness are poor, and consequently the using effect of the transfer printing film is poor is solved. A high-temperature-resistant and corrosion-resistant polyester film or polypropylene film is adopted as a base material layer, a coating is prepared and dried and cured, UV curing ink added with a light stabilizer is adopted to print a pattern on the coating through a screen printing machine, and the printed ink pattern is subjected to light treatment through ultraviolet drying equipment so that the pattern can be cured instantly. The transfer printing pattern layer is formed, so that the transfer printing film has excellent adhesive force, weather resistance and wear resistance, and the use effect of the transfer printing film is improved.

Description

Technical Field

[0001] The invention relates to the technical field of transfer films, in particular to a fire wall plate transfer film and a preparation process thereof. Background Art

[0002] The Chinese patent with publication number CN116547155A discloses a transfer film and a method for preparing the same. The transfer film uses a hard coating layer including a surface protective layer with demoulding properties to improve the problem of carrier film tearing after transfer or carrier film remaining in the final product. Since the demoulding coating layer is transferred together with the hard coating layer during transfer, it has the characteristic of being able to maintain the roughness of the texture processing. In addition, since the transfer surface is exposed in the outermost layer, it has the characteristic of simultaneously playing the role of a protective layer with excellent surface properties. However, the patent has the following defects:

[0003] The existing transfer film has poor wear resistance and adhesion when in use, resulting in poor use effect of the transfer film. Summary of the invention

[0004] The purpose of the present invention is to provide a fire wall plate transfer film and a preparation process thereof, which has excellent adhesion, weather resistance and wear resistance, improves the use effect of the transfer film, and solves the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A fire wall plate transfer film comprises a substrate layer, a coating layer, a transfer pattern layer and a protective layer, wherein the upper surface of the substrate layer is provided with the coating layer, the upper surface of the coating layer is provided with the transfer pattern layer, and the upper surface of the transfer pattern layer is provided with the protective layer.

[0007] Preferably, the thickness of the substrate layer is 20-50 μm, the thickness of the coating layer is 5-20 μm, the thickness of the transfer pattern layer is 0.5-3 μm, and the thickness of the protective layer is 2-10 μm.

[0008] Preferably, the substrate layer is made of polyester film or polypropylene film, and is formed into a substrate layer with uniform thickness after being cleaned, dried and stretched.

[0009] Preferably, the coating comprises the following raw materials in parts by weight: 10-12 parts of isopropyl alcohol, 10-12 parts of casein, 2-5 parts of tackifying resin, 10-15 parts of polyurethane emulsion, 18-25 parts of modified polyacrylate emulsion, 8-15 parts of additives and 30-35 parts of water.

[0010] Preferably, the transfer pattern layer transfers the pattern to the coating by screen printing, wherein a 200 mesh / inch screen is selected, and a UV curing ink with a light stabilizer added is used to print the pattern on the coating by a screen printer, and an ultraviolet drying device is used to treat the printed ink pattern with light to make it solidify instantly, thereby forming a transfer pattern layer.

[0011] Preferably, the light stabilizer is o-hydroxybenzophenone, benzotriazole or salicylate.

[0012] Preferably, the protective layer comprises raw materials in the following mass ratio: polyester resin: curing agent: diluent = 2:1:1.

[0013] According to another aspect of the present invention, there is provided a process for preparing a fire wall plate transfer film according to the above-mentioned method, comprising the following steps:

[0014] S1. Preparation of substrate layer:

[0015] The polyester film or polypropylene film is cleaned to remove stains on the surface of the polyester film or polypropylene film, and the cleaned polyester film or polypropylene film is dried to remove moisture on the surface of the polyester film or polypropylene film, and the polyester film or polypropylene film is repeatedly extruded and stretched by a calender to form a substrate layer with uniform thickness;

[0016] S2. Preparation of coating:

[0017] The modified polyacrylate emulsion and the polyurethane emulsion are mixed in a mixer, and water, isopropyl alcohol, casein, tackifying resin and additives are added to the mixer. The raw materials are mixed and stirred for 30-40 minutes at a temperature of 38-43° C. and a stirring speed of 300-800 r / min. The materials are coated on the substrate layer and dried and cured to form a coating on the substrate layer.

[0018] S3, preparing transfer pattern layer:

[0019] The pattern is printed on the coating by screen printing using UV curing ink with light stabilizer added, and then dried to form a transfer pattern layer, wherein the printing pressure is 5-20 psi, the drying temperature is 40-60°C, and the drying time is 30-40 minutes;

[0020] S4. Preparation of protective layer:

[0021] The polyester resin, curing agent and diluent are added into the extruder, stirred, mixed, plasticized and compacted by the extruder, and then a pre-product of a certain shape is extruded, and the pre-product is repeatedly extruded and stretched by the calender to form a protective layer with uniform thickness;

[0022] S5. Preparation of transfer membrane for firewall plate:

[0023] The protective layer is laminated on the transfer pattern layer, and the laminated substrate is cut into the required size and shape according to the needs to form a fire wall plate transfer film.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The invention adopts a high temperature resistant and corrosion resistant polyester film or polypropylene film as a substrate layer, which can ensure the stability and durability of the transfer film in a high temperature environment; adopts isopropyl alcohol, casein, tackifying resin, polyurethane emulsion, modified polyacrylate emulsion, additives and water to prepare a coating layer, and performs drying and curing, which can improve the adhesion and wear resistance of the transfer film; adopts UV curing ink added with a light stabilizer to print a pattern on the coating layer through a screen printer; adopts ultraviolet drying equipment to perform light treatment on the printed ink pattern, so that it is instantly cured to form a transfer pattern layer, so that the transfer pattern layer has excellent adhesion, weather resistance and wear resistance; adopts polyester resin, curing agent and diluent to prepare a protective layer, which can improve the wear resistance and weather resistance of the transfer film and enhance the use effect of the transfer film. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a front cross-sectional view of a fire wall plate transfer film of the present invention;

[0027] Figure 2 It is a schematic diagram of the deployment of the transfer film of the fire wall plate of the present invention;

[0028] Figure 3 The present invention is a flow chart of the preparation of the fire wall plate transfer film. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In order to solve the problem that the existing transfer film has poor wear resistance and adhesion during use, resulting in poor use of the transfer film, please refer to Figure 1-Figure 3 , this embodiment provides the following technical solutions:

[0031] Embodiment 1

[0032] A fire wall plate transfer film comprises a substrate layer 1, a coating layer 2, a transfer pattern layer 3 and a protective layer 4. The coating layer 2 is arranged on the upper surface of the substrate layer 1, the transfer pattern layer 3 is arranged on the upper surface of the coating layer 2, and the protective layer 4 is arranged on the upper surface of the transfer pattern layer 3.

[0033] The thickness of the substrate layer 1 is 20-50 μm, the thickness of the coating layer 2 is 5-20 μm, the thickness of the transfer pattern layer 3 is 0.5-3 μm, and the thickness of the protective layer 4 is 2-10 μm.

[0034] In this embodiment, the substrate layer 1 is made of polyester film or polypropylene film, and is formed into a substrate layer 1 with uniform thickness after being cleaned, dried and stretched.

[0035] It should be noted that the use of high temperature resistant and corrosion resistant polyester film or polypropylene film as the substrate layer 1 can ensure the stability and durability of the transfer film in a high temperature environment. The polyester film or polypropylene film is cleaned to remove stains on the surface of the polyester film or polypropylene film, and the cleaned polyester film or polypropylene film is dried to remove moisture on the surface of the polyester film or polypropylene film. The polyester film or polypropylene film is repeatedly extruded and stretched by a calender to form a substrate layer 1 with uniform thickness to improve its flatness and adhesion.

[0036] In this embodiment, the coating 2 includes the following raw materials in parts by weight: 10-12 parts of isopropyl alcohol, 10-12 parts of casein, 2-5 parts of tackifying resin, 10-15 parts of polyurethane emulsion, 18-25 parts of modified polyacrylate emulsion, 8-15 parts of additives and 30-35 parts of water.

[0037] It should be noted that the coating 2 is prepared by using isopropyl alcohol, casein, tackifying resin, polyurethane emulsion, modified polyacrylate emulsion, additives and water, and then dried and solidified, which can improve the adhesion and wear resistance of the transfer film.

[0038] In this embodiment, the transfer pattern layer 3 transfers the pattern to the coating 2 by screen printing, wherein a 200 mesh / inch screen is selected, and a UV curing ink with a light stabilizer added is used to print the pattern on the coating 2 by a screen printing machine, and an ultraviolet drying device is used to expose the printed ink pattern to light, so that it is instantly cured to form a transfer pattern layer 3.

[0039] In this embodiment, the light stabilizer is o-hydroxybenzophenone, benzotriazole or salicylate.

[0040] It should be noted that a UV curing ink with added light stabilizer is used to print a pattern onto the coating 2 through a screen printing machine, and an ultraviolet drying device is used to irradiate the printed ink pattern to cure it instantly, thereby forming a transfer pattern layer 3, which has excellent adhesion, weather resistance and wear resistance.

[0041] In this embodiment, the protective layer 4 includes raw materials in the following mass ratio: polyester resin: curing agent: diluent=2:1:1.

[0042] It should be noted that the use of polyester resin, curing agent and diluent to prepare the protective layer 4 can improve the wear resistance and weather resistance of the transfer film.

[0043] In order to better demonstrate the preparation process of the fire wall plate transfer film, this embodiment now provides a preparation process of the fire wall plate transfer film according to the above-mentioned method, including the following steps:

[0044] S1. Preparation of substrate layer 1:

[0045] The polyester film or polypropylene film is cleaned to remove stains on the surface of the polyester film or polypropylene film, and the cleaned polyester film or polypropylene film is dried to remove moisture on the surface of the polyester film or polypropylene film, and the polyester film or polypropylene film is repeatedly extruded and stretched by a calender to form a substrate layer 1 with uniform thickness;

[0046] S2. Preparation of coating 2:

[0047] The modified polyacrylate emulsion and the polyurethane emulsion are mixed in a mixer, and water, isopropyl alcohol, casein, tackifying resin and additives are added to the mixer. The raw materials are mixed and stirred for 30-40 minutes at a temperature of 38-43° C. and a stirring speed of 300-800 r / min. The mixture is coated on the substrate layer 1 and dried and cured to form a coating layer 2 on the substrate layer 1.

[0048] S3, preparing transfer pattern layer 3:

[0049] The pattern is printed on the coating 2 by screen printing using UV curing ink with a light stabilizer added thereto, and then dried to form a transfer pattern layer 3, wherein the printing pressure is 5-20 psi, the drying temperature is 40° C., and the drying time is 30 min;

[0050] S4, preparing protective layer 4:

[0051] The polyester resin, curing agent and diluent are added into the extruder, stirred, mixed, plasticized and compacted by the extruder, and then a pre-product of a certain shape is extruded, and the pre-product is repeatedly extruded and stretched by a calender to form a protective layer 4 with uniform thickness;

[0052] S5. Preparation of transfer membrane for firewall plate:

[0053] The protective layer 4 is laminated on the transfer pattern layer 3, and the laminated substrate is cut into a required size and shape according to requirements to form a fire wall plate transfer film.

[0054] Embodiment 2

[0055] The difference from the first embodiment is that when preparing the transfer pattern layer 3, the drying temperature and drying time used are different, wherein the drying temperature is 40° C. and the drying time is 40 min;

[0056] Embodiment 3

[0057] The difference from the first embodiment is that when preparing the transfer pattern layer 3, the drying temperature and drying time used are different, wherein the drying temperature is 60° C. and the drying time is 30 min;

[0058] Embodiment 4

[0059] The difference from the first embodiment is that when preparing the transfer pattern layer 3, the drying temperature and drying time used are different, wherein the drying temperature is 60° C. and the drying time is 40 min;

[0060] Comparative Example

[0061] A Chinese patent with publication number CN116547155A discloses a transfer film and a preparation method thereof, wherein the transfer film comprises: a carrier film; a release coating formed on one surface of the carrier film; a hard coating formed on one surface of the release coating; a decorative layer formed on one surface of the hard coating; and an adhesive layer formed on one surface of the decorative layer; wherein the preparation method of the transfer film comprises:

[0062] The steps of preparing a carrier film, forming a release coating, forming a hard coating, forming a decorative layer, and forming an adhesive layer are provided.

[0063] The transfer films prepared in Examples 1-4 and the comparative examples were subjected to performance tests, and the performance test results of the transfer films are shown in Table 1:

[0064] Table 1: Performance test results of transfer membrane

[0065] Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Comparative Example Drying temperature / ℃ 40 40 60 60 none Drying time / min 30 40 30 40 none Abrasion resistance / 100% 96.29 98.26 95.34 95.02 82.67 Adhesion / 100% 96.72 98.68 95.87 95.63 83.26

[0066] It can be seen from the above table that the transfer films prepared in Examples 1 to 4 all have good wear resistance and adhesion.

[0067] Among them, the transfer film prepared in Example 2 has the best wear resistance and adhesion, so the best drying temperature is 40° C. and the drying time is 40 min.

[0068] In summary, the use of high-temperature resistant and corrosion-resistant polyester film or polypropylene film as the substrate layer 1 can ensure the stability and durability of the transfer film in a high-temperature environment. The coating 2 is prepared using isopropyl alcohol, casein, tackifying resin, polyurethane emulsion, modified polyacrylate emulsion, additives and water, and is dried and cured, which can improve the adhesion and wear resistance of the transfer film. The UV curing ink with light stabilizer added is used to print the pattern on the coating 2 through a screen printing machine, and the printed ink pattern is subjected to light treatment using ultraviolet drying equipment to instantly cure it to form a transfer pattern layer 3, which has excellent adhesion, weather resistance and wear resistance. The protective layer 4 is prepared using polyester resin, curing agent and diluent, which can improve the wear resistance and weather resistance of the transfer film and enhance the use effect of the transfer film.

[0069] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0070] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fire wall plate transfer film, comprising a substrate layer (1), a coating layer (2), a transfer pattern layer (3) and a protective layer (4), characterized in that: The upper surface of the substrate layer (1) is provided with a coating layer (2), the upper surface of the coating layer (2) is provided with a transfer pattern layer (3), and the upper surface of the transfer pattern layer (3) is provided with a protective layer (4).

2. A fire wall plate transfer film according to claim 1, characterized in that: The thickness of the substrate layer (1) is 20-50 μm, the thickness of the coating layer (2) is 5-20 μm, the thickness of the transfer pattern layer (3) is 0.5-3 μm, and the thickness of the protective layer (4) is 2-10 μm.

3. A fire wall plate transfer film according to claim 2, characterized in that: The substrate layer (1) is made of polyester film or polypropylene film and is formed into a substrate layer (1) with uniform thickness after being cleaned, dried and stretched.

4. A fire wall plate transfer film according to claim 3, characterized in that: The coating (2) comprises the following raw materials in parts by weight: 10-12 parts of isopropyl alcohol, 10-12 parts of casein, 2-5 parts of tackifying resin, 10-15 parts of polyurethane emulsion, 18-25 parts of modified polyacrylate emulsion, 8-15 parts of additives and 30-35 parts of water.

5. The fire wall plate transfer film according to claim 1, characterized in that: The transfer pattern layer (3) transfers the pattern onto the coating (2) by screen printing, wherein a 200 mesh / inch screen is selected, a UV curing ink with a light stabilizer added is used to print the pattern onto the coating (2) by a screen printer, and an ultraviolet drying device is used to irradiate the printed ink pattern to make it solidify instantly, thereby forming the transfer pattern layer (3).

6. A fire wall plate transfer film according to claim 5, characterized in that: The light stabilizer is o-hydroxybenzophenone, benzotriazole or salicylate.

7. The fire wall plate transfer film according to claim 1, characterized in that: The protective layer (4) comprises raw materials in the following mass ratio: polyester resin: curing agent: diluent = 2:1:

1.

8. A process for preparing a fire wall plate transfer film, used for preparing the fire wall plate transfer film according to any one of claims 1 to 7, characterized in that: The steps include: S1, washing the polyester film or the polypropylene film to remove stains on the surface of the polyester film or the polypropylene film, drying the washed polyester film or the polypropylene film to remove moisture on the surface of the polyester film or the polypropylene film, and repeatedly extruding and stretching the polyester film or the polypropylene film through a calender to form a substrate layer (1) with uniform thickness; S2, mixing the modified polyacrylate emulsion and the polyurethane emulsion in a mixer, and adding water, isopropyl alcohol, casein, tackifying resin and additives into the mixer, mixing and stirring the raw materials at a temperature of 38-43° C. for 30-40 minutes at a stirring speed of 300-800 r / min, coating the mixture on the substrate layer (1) and drying and curing the mixture to form a coating layer (2) on the substrate layer (1); S3, printing a pattern onto the coating (2) by screen printing using UV curing ink with a light stabilizer added thereto, and drying the pattern to form a transfer pattern layer (3), wherein the printing pressure is 5-20 psi, the drying temperature is 40-60° C., and the drying time is 30-40 min; S4, adding polyester resin, curing agent and diluent into an extruder, stirring, mixing, plasticizing and compacting in the extruder, extruding a pre-product of a certain shape, and repeatedly extruding and stretching the pre-product through a calender to form a protective layer of uniform thickness (4); S5, laminating the protective layer (4) on the transfer pattern layer (3), and cutting the laminated substrate into a desired size and shape according to demand to form a fire wall plate transfer film.

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