Viscous heat sublimation transfer paper

Abstract

The utility model discloses viscous thermal dye sublimation transfer paper, which relates to the technical field of thermal dye sublimation transfer paper and comprises a body paper body, a bonding layer is bonded on the top of the body paper body, a base material layer is bonded on one side, far away from the body paper body, of the bonding layer, and an ink layer is also bonded on one side, far away from the bonding layer, of the base material layer. The honeycomb-shaped hexagonal connecting grooves of the base paper body are matched with the grid structure of the bonding layer, stress is dispersed in the heat transfer printing temperature change, and layering is prevented. The base material layer maintains the rigidity of the paper, isolates decomposition products of the bonding layer, and avoids ink pollution. The grid structure of the bonding layer reduces the high-temperature contact area and accommodates decomposition gas, the melting and curing process is stable, and it is ensured that the structure is complete when the transfer paper and the printing stock are fixed and separated.

Description

Technical Field

[0001] This utility model relates to the field of Bluetooth circuit control board printing technology, specifically to an adhesive thermal sublimation transfer paper. Background Technology

[0002] Sublimation transfer is a new process that uses an inkjet printer filled with sublimation transfer ink to print images such as portraits, landscapes, and text onto sublimation transfer paper in a mirror image manner. The image is then heated to approximately 200°C in a heat transfer machine, causing the transfer ink on the paper to sublimate and penetrate into the substrate, thus realistically transferring the color image onto textiles, ceramic cups, plates, slabs, metals, and other materials. In existing sublimation photo paper applications, the transfer paper is relatively flat during heat transfer and does not immediately bend under heat, allowing the paper and fabric to adhere smoothly. However, during heat transfer, when the heat press is lifted, the paper and fabric adhere to the upper platen and then fall down. When the hot transfer paper falls onto the fabric, it causes a secondary transfer, resulting in a faint ghost image. To avoid ghosting, current practices include applying a little water to the four corners of the transfer paper where there is no printed pattern to help it adhere to the fabric, or reducing the rising speed of the pressure plate. However, these practices reduce work efficiency and can affect the transfer quality.

[0003] To address this issue, a Chinese patent (publication number: CN206913968U) discloses an adhesive sublimation transfer paper. This sublimation transfer paper comprises, from bottom to top, a base paper, an adhesive layer, an ink layer, and a transfer paper. A sucrose layer is coated below the adhesive layer, and the sucrose layer has several hexagonal pores. In this invention, when the heat press plate is lifted during heat transfer, the sucrose layer adheres to the fabric, preventing the sublimation transfer paper from being sucked up and falling off, thus avoiding ghosting and edge curling. This improves the quality of sublimation transfer and also features a reasonable structure and low production cost.

[0004] During the use of the above-mentioned transfer paper, the sucrose layer enhances the adhesion of the transfer paper, preventing it from falling off during printing and causing ghosting or curling edges. However, the sucrose layer is significantly affected by temperature during use. Sucrose may decompose at high temperatures, and residual caramelized substances may adhere to the surface of the substrate, forming stains or affecting the surface texture.

[0005] To address these issues, we designed a viscous thermal sublimation transfer paper. Utility Model Content

[0006] The purpose of this invention is to provide an adhesive thermal sublimation transfer paper to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, this utility model provides an adhesive thermal sublimation transfer paper, including a base paper body, an adhesive layer bonded to the top of the base paper body, a substrate layer bonded to the side of the adhesive layer away from the base paper body, and an ink layer bonded to the side of the substrate layer away from the adhesive layer.

[0008] Furthermore, an anti-stick release layer is bonded to the side of the ink layer away from the substrate layer. The anti-stick release layer includes an anti-stick coating and a release layer, wherein the anti-stick coating is located on the side that adheres to the ink layer, and the release layer is located on the side away from the anti-stick coating.

[0009] Furthermore, multiple connecting grooves are provided on the side of the original paper body that is in contact with the adhesive layer, and the multiple connecting grooves are arranged in a rectangular array at equal intervals on the original paper body.

[0010] Furthermore, the connecting groove is configured in a honeycomb hexagonal shape.

[0011] Furthermore, the adhesive layer has multiple horizontal and vertical dividing strips connected to the side near the base paper body. The horizontal dividing strips are arranged in a linear array with equal spacing along the length of the base paper body, and the vertical dividing strips are arranged in a linear array with equal spacing along the width of the base paper body. The horizontal and vertical dividing strips work together to form a grid structure.

[0012] Furthermore, the adhesive layer is made of composite hot melt adhesive, and the thickness of the adhesive layer is 20μm.

[0013] Compared with existing technologies, the beneficial effects of this invention are as follows: the honeycomb-shaped hexagonal connecting grooves of the base paper and the grid structure of the adhesive layer work together to disperse stress during heat transfer temperature changes and prevent delamination. The substrate layer maintains the rigidity of the paper while isolating the decomposition products of the adhesive layer, avoiding ink contamination. The grid structure of the adhesive layer reduces the high-temperature contact area, accommodates decomposition gases, and ensures a stable melting and solidification process, guaranteeing structural integrity when the transfer paper is fixedly separated from the substrate. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the overall external structure of this utility model;

[0015] Figure 2 This is a side view of the present invention;

[0016] Figure 3 This is a schematic diagram of the planar structure of the present invention;

[0017] Figure 4 This utility model Figure 2 Enlarged view of the structure at point A in the middle.

[0018] In the diagram: 1. Base paper; 2. Adhesive layer; 3. Substrate layer; 4. Ink layer; 5. Anti-sticking isolation layer; 6. Connecting groove; 7. Separating horizontal bar; 8. Separating vertical bar. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 This utility model provides a technical solution: an adhesive thermal sublimation transfer paper, including a base paper body 1, an adhesive layer 2 is adhered to the top of the base paper body 1, a substrate layer 3 is adhered to the side of the adhesive layer 2 away from the base paper body 1, and an ink layer 4 is also adhered to the side of the substrate layer 3 away from the adhesive layer 2.

[0021] It should be noted that the substrate layer 3 can be made of polyetheretherketone film and polyacrylonitrile nanofiber nonwoven fabric.

[0022] In practical implementation, the substrate layer 3 in this setup provides a supporting effect, supporting the ink layer 4 while also isolating the ink from the effects of the high-temperature decomposition products of the adhesive layer 2. The ink layer 4 then transfers the pattern to the substrate surface through thermal sublimation. The adhesive layer 2 prevents the carbonization and decomposition of the adhesive layer. During the thermal transfer process, the molten adhesive layer 2 adheres to the substrate surface, forming a physical adsorption force. When the temperature drops after the thermal transfer ends, the adhesive layer solidifies, causing the transfer paper to separate from the substrate, thus avoiding ghosting caused by paper adsorption.

[0023] See Figure 1-4 An anti-stick release layer 5 is bonded to the side of the ink layer 4 away from the substrate layer 3. The anti-stick release layer 5 includes an anti-stick coating and a release layer, wherein the anti-stick coating is located on the side that is in contact with the ink layer 4, and the release layer is located on the side away from the anti-stick coating.

[0024] It should be noted that the anti-stick coating in this application is preferably made of perfluoropolyether, and its surface can be made into a rough surface during production to reduce the contact area with the fabric. The release layer is preferably made of silicone paper with anti-slip texture printed on it.

[0025] In practice, the anti-stick coating prevents the paper from sticking to the fabric after the transfer; the release layer provides a physical barrier effect, making it easy to peel off manually after the transfer is completed, thus avoiding secondary transfer.

[0026] See Figure 1-4Multiple connecting grooves 6 are provided on the side of the paper body 1 that is in contact with the adhesive layer 2. The multiple connecting grooves 6 are arranged in a rectangular array at equal intervals on the paper body 1.

[0027] In practical implementation, the connecting groove 6 in this design increases the contact area between the base paper 1 and the adhesive layer 2, forming a better stable structure and making the base paper 1 and the adhesive layer 2 bond more tightly. When temperature changes occur during the heat transfer process, this design can prevent the adhesive layer 2 from separating from the base paper 1, ensuring the overall structural stability of the transfer paper.

[0028] See Figure 1-4 The connecting groove 6 is a honeycomb hexagon.

[0029] In practice, the hexagonal honeycomb structure has good stability and can evenly distribute stress under heat transfer pressure, preventing the paper body 1 and the adhesive layer 2 from separating due to excessive local stress. At the same time, the air channels formed by the grooves help dissipate heat and reduce the probability of high-temperature carbonization of the adhesive layer 2.

[0030] See Figure 1-4 The adhesive layer 2 has multiple horizontal dividing strips 7 and multiple vertical dividing strips 8 connected to the side of the paper body 1. The multiple horizontal dividing strips 7 are distributed in a linear array with equal spacing along the length of the paper body 1, and the multiple vertical dividing strips 8 are distributed in a linear array with equal spacing along the width of the paper body 1. The multiple horizontal dividing strips 7 and the vertical dividing strips 8 work together to form a grid structure.

[0031] In practice, the grid structure reduces the contact area between the adhesive layer 2 and the high temperature, thus avoiding local heat concentration. The gaps in the grid structure can accommodate the gas generated by the decomposition of the adhesive layer 2, preventing the expansion between the adhesive layer 2 and the original paper body 1 due to the high amount of gas generated, which would lead to adhesive failure. At the same time, the grid structure reduces the amount of material used to a certain extent, avoiding the possible material residue.

[0032] See Figure 1-4 The adhesive layer 2 is made of composite hot melt adhesive and has a thickness of 20μm.

[0033] It should be noted that the adhesive layer 2 is a composite hot melt adhesive made of food-grade polylactic acid and nano-ceramic particles.

[0034] In practice, the nano-ceramic particles can maintain structural stability at high temperatures during heat transfer, preventing the carbonization and decomposition of the adhesive layer 2.

[0035] Working Principle: The base paper 1 serves as the foundation layer. The honeycomb-shaped hexagonal connecting grooves 6 on its surface tightly interlock with the grid structure formed by the horizontal and vertical separating strips 7 and 8 of the adhesive layer 2. The adhesive layer 2, made of composite hot melt adhesive, adheres to the base paper 1 through the interlocking grooves and grid structure. Simultaneously, the substrate layer 3, composed of a polyetheretherketone film and polyacrylonitrile nanofiber nonwoven fabric, is bonded to the other side of the adhesive layer 2, providing rigid support and isolation protection for the ink layer 4. At this point, an inkjet printer equipped with sublimation transfer ink is used to print the image onto the ink layer 4 in a mirror manner, completing the pattern transfer. An anti-stick isolation layer 5 covers the outside of the ink layer 4, with the perfluoropolyether anti-stick coating adhering to the ink layer and the silicone release layer facing outwards, preventing the pattern from being contaminated or sticking before transfer. The transfer paper carrying the pattern is placed on the substrate and fed into the heat transfer equipment. As the temperature of the hot press plate rises, the polylactic acid in adhesive layer 2 begins to melt, while the nano-ceramic particles maintain structural stability, preventing the adhesive layer from carbonizing and decomposing. The molten adhesive layer 2 adheres to the substrate surface, forming a physical adsorption force that ensures the transfer paper is fixed to the substrate. As the temperature continues to rise, the thermal sublimation ink in ink layer 4 sublimates, completing the pattern transfer. During this process, substrate layer 3 maintains the stability of the paper's shape, effectively isolating any decomposition products that may be generated by adhesive layer 2, preventing them from contaminating ink layer 4 and ensuring the purity and clarity of the pattern's colors. After the thermal transfer is complete, the temperature of the hot press plate drops, and the polylactic acid adhesive layer in adhesive layer 2 quickly solidifies, allowing the transfer paper to separate stably from the substrate. The anti-stick isolation layer 5 reduces the contact area with the fabric, preventing the paper from sticking to the substrate. The silicone release layer provides physical barrier, and the anti-slip texture printed on its surface assists in manual or mechanical peeling, preventing secondary transfer and ghosting caused by the high-temperature transfer paper falling off. Meanwhile, the grid structure of the adhesive layer 2 cooperates with the groove of the base paper 1, which can maintain the overall structural stability of the transfer paper by dispersing gas, ensuring that the pattern is transferred completely and clearly to the surface of the substrate.

Claims

1. A viscous thermal sublimation transfer paper, comprising a base paper body (1), characterized in that, An adhesive layer (2) is bonded to the top of the base paper body (1), and a substrate layer (3) is bonded to the side of the adhesive layer (2) away from the base paper body (1). An ink layer (4) is also bonded to the side of the substrate layer (3) away from the adhesive layer (2).

2. The adhesive thermal sublimation transfer paper as described in claim 1, characterized in that: An anti-stick release layer (5) is adhered to the side of the ink layer (4) away from the substrate layer (3), the anti-stick release layer (5) comprising, The non-stick coating and the release layer are provided, wherein the non-stick coating is located on the side that is in contact with the ink layer (4), and the release layer is located on the side away from the non-stick coating.

3. The adhesive thermal sublimation transfer paper as described in claim 2, characterized in that: Multiple connecting grooves (6) are provided on the side of the paper body (1) that is in contact with the adhesive layer (2). The multiple connecting grooves (6) are arranged in a rectangular array at equal intervals on the paper body (1).

4. The adhesive thermal sublimation transfer paper as described in claim 3, characterized in that: The connecting groove (6) is honeycomb hexagonal in shape.

5. The adhesive thermal sublimation transfer paper as described in claim 4, characterized in that: The adhesive layer (2) has multiple horizontal dividing strips (7) and multiple vertical dividing strips (8) connected to the side of the original paper body (1), wherein, Multiple horizontal dividing strips (7) are arranged in a linear array with equal spacing along the length of the original paper body (1), and multiple vertical dividing strips (8) are arranged in a linear array with equal spacing along the width of the original paper body (1). The multiple horizontal dividing strips (7) and vertical dividing strips (8) are used together to form a grid structure.

6. The adhesive thermal sublimation transfer paper as described in claim 5, characterized in that: The adhesive layer (2) is made of composite hot melt adhesive and has a thickness of 20 μm.

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