Transfer printing ink and transfer printing method thereof

Abstract

The invention provides transfer printing ink. The transfer printing ink comprises 55 wt%-70 wt% of a polymerizable prepolymer, 11 wt%-16 wt% of a photosensitive monomer, 0.8 wt%-1.7 wt% of a photoinitiator, 6 wt%-11 wt% of liquid, 12 wt%-22 wt% of wear-resistant acrylic acid mixed reaction resin and a solvent. The invention also provides a transfer printing method using the transfer printing ink.

Description

Technical Field

[0001] This disclosure relates to the technical field of transfer printing, and more particularly to a transfer ink and a transfer method thereof. Background Technology

[0002] To create decorative patterns on product surfaces, a common surface treatment technique is to use transfer films. Furthermore, depending on the placement of the film, it can be categorized into in-mold roller (IMR) and out-mold roller (OMR).

[0003] However, the physical properties of transfer films formed using traditional transfer inks are unsatisfactory. Specifically, surface films formed with traditional transfer inks can withstand less than 2000 abrasion cycles under a 200g load with wool felt, less than 200 cycles with roll-on friction paper (RCA), less than 300 cycles with an eraser, and less than 300 cycles with alcohol, with a water droplet angle of less than 80°. Therefore, this surface film has poor abrasion resistance, and its surface is easily contaminated, difficult to clean, and not resistant to fingerprints. Summary of the Invention

[0004] This invention provides a transfer ink. The transfer ink comprises 55wt%-70wt% of a polymeric prepolymer, 11wt%-16wt% of a photosensitive monomer, 0.8wt%-1.7wt% of a photoinitiator, 6wt%-11wt% of a liquid, 12wt%-22wt% of abrasion-resistant acrylic mixed reactive resin, and a solvent.

[0005] Using the aforementioned transfer ink, this invention provides a transfer method comprising the following steps: First, a plastic film is provided. Then, a transfer ink layer is formed on the plastic film using a transfer ink to form a transfer film, wherein the transfer ink comprises 55wt%-70wt% of a polymeric prepolymer, 11wt%-16wt% of a photosensitive monomer, 0.8wt%-1.7wt% of a photoinitiator, 6wt%-11wt% of a liquid, 12wt%-22wt% of abrasion-resistant acrylic mixed reactive resin, and a solvent. Next, the transfer film is placed in a mold. Then, a structural material is filled into the mold to form a structural component, and the transfer ink layer is transferred from the transfer film to a surface of the structural component. Subsequently, the transfer ink layer is subjected to a curing treatment to form a surface film layer.

[0006] Using the aforementioned transfer ink, this application provides another transfer method comprising the following steps: First, a plastic film is provided. Then, a transfer ink layer is formed on the plastic film using a transfer ink to form a transfer film, wherein the transfer ink comprises 55wt%-70wt% of a polymeric prepolymer, 11wt%-16wt% of a photosensitive monomer, 0.8wt%-1.7wt% of a photoinitiator, 6wt%-11wt% of a liquid, 12wt%-22wt% of abrasion-resistant acrylic mixed reactive resin, and a solvent. Next, a structural component is provided, which is constructed of a structural material and has a surface. Then, the transfer film is tightly covered onto the surface. Subsequently, a curing treatment is applied to the transfer ink layer, thereby transferring the transfer ink layer to the surface and forming a surface film layer on the surface.

[0007] Compared to traditional transfer films, the transfer ink provided by this invention can form a surface film with superior physical properties on the surface of injection-molded objects. Specifically, the surface film formed by the transfer ink provided by this invention can withstand more than 100,000 abrasion cycles under a 500g load with wool felt, more than 1,000 cycles with rolled rubbing paper (RCA), more than 13,000 cycles with an eraser, and less than 13,000 cycles with alcohol. The water droplet angle can be greater than 115°. Therefore, the transfer ink provided by this invention can form a highly wear-resistant, easy-to-clean, fingerprint-resistant, and stain-resistant surface film on the surface of injection-molded structural parts. Attached Figure Description

[0008] Figure 1 A flowchart of a transfer method provided according to an embodiment of this case is shown;

[0009] Figures 2A to 2D It corresponds to Figure 1 The diagram shows the structure of the transfer method.

[0010] Figure 3 A flowchart showing a transfer method provided according to another embodiment of this case; and

[0011] Figures 4A to 4C It corresponds to Figure 1 The diagram shows the structure of the transfer method. Detailed Implementation

[0012] The specific embodiments of this invention will be described in more detail below with reference to the schematic diagrams. The advantages and features of this invention will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this invention.

[0013] Figure 1 This diagram shows a flowchart of a transfer method provided according to an embodiment of this case. Figures 2A to 2D It corresponds to Figure 1 The diagram shows the structure of the transfer method.

[0014] like Figure 1 As shown, the transfer method provided in this case includes the following steps.

[0015] First, as described in step S110, and please refer to... Figure 2A As shown, a plastic film 210 is provided. In one embodiment, the plastic film 210 may be a PET film or a PC film.

[0016] Subsequently, as described in step S120, and please refer to the following: Figure 2A As shown, a transfer ink layer 220 is formed on a plastic film 210 using a transfer ink to form a transfer film 200. This transfer ink comprises 55wt%-70wt% of a polymeric prepolymer, 11wt%-16wt% of a photosensitive monomer, 0.8wt%-1.7wt% of a photoinitiator, 6wt%-11wt% of a liquid, 12wt%-22wt% of abrasion-resistant acrylic mixed reactive resin, and a solvent.

[0017] In one embodiment, the aforementioned solvent comprises pure water. In another embodiment, the aforementioned abrasion-resistant acrylic mixed reactive resin may be a copolymer of butyl methacrylate (BMA) and methyl methacrylate (MMA). In one embodiment, the aforementioned liquid comprises pure water. Furthermore, in yet another embodiment, the aforementioned abrasion-resistant acrylic mixed reactive resin may also be an acrylic resin to which nano-sized alumina or nano-sized silica has been added to enhance its abrasion resistance.

[0018] Next, as described in step S130, and please refer to... Figure 2B As shown, the transfer film 200 is placed inside a mold 240. Specifically, this step involves placing and positioning the transfer film 200 inside the mold 240 with the plastic film 210 facing outward (i.e., in direct contact with the mold 240) and the transfer ink layer 220 facing inward.

[0019] Then, as described in step S140, and please refer to... Figure 2C As shown, a structural material is filled into the mold 240 to form a structural member 260, and the transfer ink layer 220 is transferred from the transfer film 200 to a surface 262 of the structural member 260. This surface 262 can be a plane or a curved surface.

[0020] In one embodiment, the aforementioned structural material may be a plastic material, and the aforementioned step S140 of filling the structural material into the mold 240 to form the structural member 260 includes filling the structural material into the mold 240 to form the structural member 260 by injection molding. However, this invention is not limited to this. In other embodiments, the aforementioned structural material may also be a metal material.

[0021] Then, as described in step S150, and please refer to the following: Figure 2D As shown, a curing treatment is applied to the transfer ink layer 220 to form a surface film layer 222. Then, the plastic film 210 is peeled off from the structural member 260, leaving only the cured surface film layer 222 on the structural member 260. In one embodiment, this curing treatment is a photocuring treatment.

[0022] However, this case is not limited to this. In other embodiments, the plastic film 210 may also be retained on the surface 262 of the structural member 260 to protect the transferred ink pattern.

[0023] Figure 3 This diagram shows a flowchart of a transfer method provided according to another embodiment of the present invention. Figures 4A to 4C It corresponds to Figure 1 The diagram shows the structure of the transfer method.

[0024] like Figure 3 As shown, the transfer method provided in this embodiment includes the following steps.

[0025] First, as described in step S210, and please refer to... Figure 4A As shown, a plastic film 410 is provided. In one embodiment, the plastic film 410 may be a PET film or a PC film.

[0026] Subsequently, as described in step S220, and please refer to the following: Figure 4A As shown, a transfer ink layer 420 is formed on a plastic film 410 using a transfer ink to form a transfer film 400. This transfer ink comprises 55wt%-70wt% of a polymeric prepolymer, 11wt%-16wt% of a photosensitive monomer, 0.8wt%-1.7wt% of a photoinitiator, 6wt%-11wt% of a liquid, 12wt%-22wt% of abrasion-resistant acrylic mixed reactive resin, and a solvent.

[0027] Next, as described in step S230, and please refer to... Figure 4BAs shown, a structural member 460 is provided, which is made of a structural material and has a surface 462. In one embodiment, the structural material used to form the structural member 460 is a metallic material, such as an aluminum alloy, an aluminum-magnesium alloy, or a lithium-magnesium alloy. However, this invention is not limited to this. In other embodiments, plastic or ceramic materials can also be used as the structural material. Furthermore, in other embodiments, various different materials can be used to form this structural member 460 by heterogeneous bonding.

[0028] Then, as described in step S240, and please refer to... Figure 4B As shown, the transfer film 400 is tightly covered on the surface 462 of the structural component 460.

[0029] In one embodiment, the aforementioned step of tightly covering the surface 462 of the structural member 460 with the transfer film 400 is to use a vacuum method to make the transfer film 400 tightly cover the surface 462.

[0030] Then, as described in step S250, and please refer to the following: Figure 4C As shown, a curing process is applied to the transfer ink layer 420, causing the transfer ink layer 420 to transfer to the surface 462 and forming a surface film layer 422 on the surface 462. Then, the plastic film 410 is peeled off from the structural member 460, leaving only the cured surface film layer 422 on the structural member 460. In one embodiment, this curing process is a photocuring process, for example, irradiating the structural member 460 with an ultraviolet light illuminator.

[0031] However, this case is not limited to this. In other embodiments, the plastic film 410 may also be retained on the surface 462 of the structural member 460 to protect the transferred ink pattern.

[0032] Compared to traditional transfer films, the transfer ink provided by this invention can form transfer films 200, 400 with superior physical properties on the surfaces 262, 462 of injection-molded objects. Specifically, the surface films 222, 422 formed by the transfer ink provided by this invention can withstand more than 100,000 abrasion cycles under a 500g load with wool felt, more than 1,000 abrasion cycles with rolled rubbing paper (RCA), more than 13,000 abrasion cycles with an eraser, and less than 13,000 abrasion cycles with alcohol, with a water droplet angle greater than 115°. Therefore, the transfer ink provided by this invention can form highly wear-resistant, easy-to-clean, fingerprint-resistant, and stain-resistant surface films 222, 422 on the surfaces 262, 462 of injection-molded structural parts 260, 460.

[0033] Although the present invention has been disclosed above with reference to embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes and modifications without departing from the concept and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. A transfer ink, characterized in that it comprises: 55wt%-70wt% of polymeric prepolymer; 11wt%-16wt% of photosensitive monomers; 0.8wt%-1.7wt% of photoinitiator; 6wt%-11wt% liquid; 12wt%-22wt% of abrasion-resistant acrylic blended reactive resin; and Solvent.

2. The transfer ink according to claim 1, characterized in that, in, The solvents mentioned above include pure water.

3. The transfer ink according to claim 1, characterized in that, in, The aforementioned wear-resistant acrylic mixed reactive resin contains nano-sized alumina or nano-sized silica.

4. A transfer method, characterized in that, Include: Provide plastic film; A transfer ink layer is formed on the aforementioned plastic film using transfer ink to form a transfer film, wherein the transfer ink comprises 55wt%-70wt% of a polymeric prepolymer, 11wt%-16wt% of a photosensitive monomer, 0.8wt%-1.7wt% of a photoinitiator, 6wt%-11wt% of a liquid, 12wt%-22wt% of abrasion-resistant acrylic mixed reactive resin, and a solvent; Place the above-mentioned transfer film into the mold; Structural material is filled into the mold to form a structural component, and the transfer ink layer is transferred from the transfer film to the surface of the structural component; and The above-mentioned transfer ink layer is cured to form a surface film layer.

5. The transfer method according to claim 4, characterized in that, in, The above-mentioned structural material is plastic.

6. The transfer method according to claim 4, characterized in that, in, The above curing process is a photocuring process.

7. The transfer method according to claim 4, characterized in that, in, The aforementioned plastic film is either PET film or PC film.

8. The transfer method according to claim 4, characterized in that, The step of filling the mold with the structural material to form the structural component and transferring the transfer ink layer from the transfer film to the surface of the structural component includes filling the mold with the structural material to form the structural component by injection molding.

9. A transfer method, characterized in that, Include: Provide plastic film; A transfer ink layer is formed on the aforementioned plastic film using transfer ink to form a transfer film, wherein the transfer ink comprises 55wt%-70wt% of a polymeric prepolymer, 11wt%-16wt% of a photosensitive monomer, 0.8wt%-1.7wt% of a photoinitiator, 6wt%-11wt% of a liquid, 12wt%-22wt% of abrasion-resistant acrylic mixed reactive resin, and a solvent; Provide a structural component, wherein the structural component is made of a structural material and has a surface; The above-mentioned transfer film is applied to the above-mentioned surface; and The transfer ink layer is cured to transfer it to the surface and form a surface film on the surface.

10. The transfer method according to claim 9, characterized in that, in, The above-mentioned structural material is plastic.

11. The transfer method according to claim 9, characterized in that, in, The above curing process is a photocuring process.

12. The transfer method according to claim 9, characterized in that, in, The aforementioned plastic film is either PET film or PC film.

13. The transfer method according to claim 9, characterized in that, The step of tightly covering the surface with the transfer film is to use a vacuum method to ensure that the transfer film tightly covers the surface.

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