Anti-curling high-smoothness heat transfer paper

Abstract

The utility model discloses anti-curling high-smoothness heat transfer paper, which relates to the technical field of heat transfer paper and comprises a smooth layer, a coating, a thermal sublimation layer, a release layer, backing paper and a reinforcing layer from top to bottom, the release layer and the thermal sublimation layer are arranged between the coating and the backing paper, the smooth layer is arranged on the upper surface of the coating, and the reinforcing layer is arranged on the lower surface of the coating. A reinforcing layer is arranged below the backing paper, and the hardness of the reinforcing layer is higher than that of the backing paper. According to the utility model, the smooth layer is arranged, so that the backing paper has better smoothness during ink-jet printing, a high-precision spray head is prevented from rubbing raised paper wrinkles and being damaged during printing, and the coating on the heat sublimation layer is arranged, so that the curling phenomenon of the heat transfer paper during high-temperature transfer printing is greatly reduced; by arranging the reinforcing layer with the hardness higher than that of the backing paper, the thickness and the hardness of the heat transfer paper are increased, the curling phenomenon can be greatly reduced, dislocation and deformation of images are avoided, and the quality of the heat transfer paper is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal transfer paper, in particular to a thermal transfer paper with anti-curling and high smoothness. Background Art

[0002] Thermal transfer paper is to print patterns on printing thermal transfer paper with special thermal transfer paper ink, and then transfer the patterns to products through temperature and pressure. The current production method of thermal transfer paper is as follows: first, select or design the required transfer pattern and separate the colors of the pattern by computer; then, engrave the intaglio or relief plate of the transferred pattern on the plate roller through an electro-engraving machine; apply transfer ink on the plate roller and overprint the separated-color patterns on the printing thermal transfer paper, which is the thermal transfer paper. During transfer, the side of the thermal transfer paper with the pattern is attached to the object to be transferred. After controlling for a certain time, temperature, and pressure, the pattern on the transfer paper is printed on the object, and the transfer paper is removed to complete the transfer of the pattern. Since this kind of thermal transfer paper uses electro-engraving for plate making, the printed pattern is rough and not delicate, with poor layering, and the engraving time is long. It can only transfer some low-grade patterns with low surface requirements. Some thermal transfer papers use inkjet-type transfer papers. If the paper surface of the transfer paper is rough, it will wrinkle severely and rub against the nozzle during printing, causing great harm to the delicate nozzle. Moreover, the existing transfer papers are prone to heat curling during the thermal transfer process. Therefore, a thermal transfer paper with anti-curling and high smoothness is proposed here. Content of the Utility Model

[0003] Technical Problems to be Solved

[0004] The purpose of the utility model is to make up for the deficiencies of the existing technology and provide a thermal transfer paper with anti-curling and high smoothness.

[0005] Technical Solution

[0006] To achieve the above purpose, the utility model provides the following technical solution: a thermal transfer paper with anti-curling and high smoothness, including a smooth layer, a coating layer, a thermal sublimation layer, a release layer, a base paper, and a reinforcement layer from top to bottom. Among them, a release layer and a thermal sublimation layer are provided between the coating layer and the base paper. The upper surface of the coating layer is provided with a smooth layer, and a reinforcement layer is provided below the base paper. The hardness of the reinforcement layer is higher than that of the base paper. By setting the smooth layer, the base paper has better smoothness during inkjet printing, avoiding damage to the high-precision nozzle when rubbing against the raised paper wrinkles during printing. The setting of the coating layer on the thermal sublimation layer greatly reduces the curling phenomenon during high-temperature transfer of the thermal transfer paper. And the setting of the reinforcement layer with a hardness higher than that of the base paper increases the thickness and hardness of the thermal transfer paper, which can also greatly reduce the curling phenomenon, avoid misalignment and deformation of the image, and improve the quality of the thermal transfer paper.

[0007] Preferably, the reinforcing layer is made of a PET base film material, and the reinforcing layer is connected to the base paper through a first adhesive layer.

[0008] Preferably, the base paper and the release layer are connected through a second adhesive layer.

[0009] Preferably, the coating is provided with pores that allow ink to penetrate.

[0010] Preferably, the thickness of the smoothing layer is 1% - 5% of the base paper.

[0011] Preferably, the thickness of the smoothing layer is 0.1 - 10 μm.

[0012] Preferably, the coating is composed of inorganic pigments.

[0013] Advantageous effects:

[0014] Compared with the prior art, the anti-curling high-smoothness thermal transfer paper has the following advantageous effects:

[0015] By setting the smoothing layer in the present utility model, the base paper has better smoothness during inkjet printing, avoiding damage to the high-precision nozzle when it rubs against the raised paper wrinkles during printing. The setting of the coating on the thermal sublimation layer greatly reduces the curling phenomenon during high-temperature thermal transfer of the thermal transfer paper, and the setting of the reinforcing layer with a higher hardness than the base paper increases the thickness and hardness of the thermal transfer paper, also greatly reducing the curling phenomenon, avoiding image misalignment and deformation, and improving the quality of the thermal transfer paper. Description of the drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a structural schematic diagram of the present utility model;

[0018] Figure 2 It is a connection structural schematic diagram between the base paper and the reinforcing layer of the present utility model;

[0019] Figure 3 It is a connection structural schematic diagram between the base paper and the release layer of the present utility model.

[0020] In the figure:

[0021] 1. Base paper; 2. Coating; 3. Release layer; 4. Thermal sublimation layer; 5. Smoothing layer; 6. Reinforcing layer; 7. First adhesive layer; 8. Second adhesive layer. Detailed implementation mode

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1 to 3 As shown, the present utility model provides a technical solution: a heat transfer paper with anti-curling and high smoothness, including a smooth layer 5, a coating layer 2, a thermal sublimation layer 4, a release layer 3, a base paper 1, and a strengthening layer 6 from top to bottom. Among them, a release layer 3 and a thermal sublimation layer 4 are provided between the coating layer 2 and the base paper 1. A smooth layer 5 is arranged on the upper surface of the coating layer 2, and a strengthening layer 6 is arranged below the base paper 1. The hardness of the strengthening layer 6 is higher than that of the base paper. By setting the smooth layer 5, the base paper has better smoothness during inkjet printing, avoiding damage to the high-precision nozzle when printing due to rubbing against raised paper wrinkles. The setting of the coating on the thermal sublimation layer greatly reduces the curling phenomenon during high-temperature transfer of the heat transfer paper, and the setting of the strengthening layer 6 with a hardness higher than that of the base paper increases the thickness and hardness of the heat transfer paper, also greatly reducing the curling phenomenon, avoiding image misalignment and deformation, and improving the quality of the heat transfer paper.

[0024] Please focus on referring to Figure 2 and Figure 3 , the strengthening layer 6 is made of PET base film material, and the strengthening layer 6 is connected to the base paper 1 through a first adhesive layer 7. The base paper 1 is made of glassine paper, CCK or PEK paper. The base paper 1 and the release layer 3 are connected through a second adhesive layer 8. The first adhesive layer 7 and the second adhesive layer 8 can be acrylic pressure-sensitive adhesive, the first adhesive layer 7 and the second adhesive layer 8 can also be silicone structural adhesive, or a resin adhesive formed by polyester resin can also be selected.

[0025] The coating layer 2 in the present application is provided with pores that allow ink to penetrate. The coating layer 2 is composed of inorganic pigments. The setting of the pore structure avoids the unevenness of large pores in the coating layer 2, avoids damage to the high-precision nozzle when printing due to rubbing against raised paper wrinkles, and makes the quality of the transfer paper more stable.

[0026] Moreover, the thickness of the smooth layer 5 in the present application is 1% - 5% of the base paper 1, and the thickness of the smooth layer is 0.1 - 10 μm.

[0027] Working principle: The setting of the smoothing layer 5 enables the base paper 1 to have better smoothness during inkjet printing, avoiding damage to the high-precision nozzle when it rubs against the raised paper wrinkles during printing. The setting of the upper coating of the thermal sublimation layer greatly reduces the curling phenomenon during high-temperature transfer of the thermal transfer paper. Moreover, the setting of the reinforcing layer 6 with a higher hardness than that of the base paper increases the thickness and hardness of the thermal transfer paper, which can also greatly reduce the curling phenomenon, avoid image misalignment and deformation, and improve the quality of the thermal transfer paper.

[0028] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0029] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat transfer paper with anti-curling and high smoothness, characterized in that: It includes a smooth layer (5) from top to bottom, a coating layer (2), a heat sublimation layer (4), a release layer (3), a base paper (1) and a reinforcing layer (6). A release layer (3) and a heat sublimation layer (4) are provided between the coating layer (2) and the base paper (1). A smooth layer (5) is provided on the upper surface of the coating layer (2). A reinforcing layer (6) is provided below the base paper (1). The hardness of the reinforcing layer (6) is higher than that of the base paper.

2. The anti-curling and high-smoothness thermal transfer paper according to claim 1, wherein: The reinforcing layer (6) is made of a PET base film material, and the reinforcing layer (6) is connected to the base paper (1) through a first adhesive layer (7).

3. The anti-curling and high-smoothness thermal transfer paper according to claim 1, wherein: The base paper (1) and the release layer (3) are connected through a second adhesive layer (8).

4. A kind of anti-curling high-smoothness thermal transfer paper according to claim 1, characterized in that: The coating layer (2) is provided with pores through which ink can penetrate.

5. A heat transfer paper with anti-curling and high smoothness according to claim 1, characterized in that: The thickness of the smooth layer (5) is 1% - 5% of that of the base paper (1).

6. The anti-curling and high-smoothness thermal transfer paper according to claim 1, wherein: The thickness of the smooth layer is 0.1 - 10 μm.

7. The anti-curling and high-smoothness thermal transfer paper according to claim 1, wherein: The coating layer (2) is composed of inorganic pigments.

Images