TWI705906B - Water pressure transfer method for producing relief - Google Patents

Abstract

A hydraulic transfer method for generating relief, comprising: (a) forming a pattern layer with ink on a water-soluble film, the pattern layer including at least two spaced pattern areas; (b) in the pattern An activator layer is formed on the layer. The activator layer is located above the water-soluble film and the pattern layer and is filled between two spaced pattern regions. The activator layer at least partially penetrates into the pattern layer and interacts with the pattern. The layer is mutually soluble and includes a hydrophilic acrylate monomer and a hydrophobic acrylate monomer, and the specific gravity of the activator layer is greater than 1.00 and not greater than 1.25; (c) Place the water-soluble film on the water surface to make The activator layer concentrates and sinks between two spaced pattern areas to squeeze the water-soluble film; and (d) press the water-soluble film into water. The invention does not need to use a leveling agent, and can obtain a transfer film structure with relief.

Description

Water pressure transfer method for producing relief

The present invention relates to a water pressure transfer method, in particular to a water pressure transfer method for generating relief.

The existing water pressure transfer method is to form a pattern layer on a water-soluble film, and then form an activator layer on the pattern layer, and then activate the paint of the pattern layer, and then contact an object with the activator layer And press into the water to transfer the patterned layer to the surface of the object, then use ultraviolet light or heating to cure the patterned layer and the activator layer to adhere to the object, and then remove the water-soluble film. A pattern-transferred object is obtained. For example, the water pressure transfer method described in CN 101909901 B uses the setting of the surface tension of the activator to obtain a water pressure transfer product with uneven touch.

However, the above-mentioned water pressure transfer method for producing uneven touch usually requires strict control of the amount of leveling agent in order to avoid the problem that the activator is difficult to penetrate into the pattern layer or the aggregation force is too low. In addition, the thickness of the three-dimensional unevenness produced by the above-mentioned hydraulic transfer method is only about 2-10 μm.

Therefore, the purpose of the present invention is to provide a water pressure transfer method for generating relief, which can overcome the above-mentioned disadvantages of the prior art.

Therefore, the hydraulic transfer method for generating relief of the present invention includes the following steps: (a) A pattern layer is formed on a water-soluble film with ultraviolet curable ink, and the pattern layer includes at least two spaced patterns Zone; (b) forming a UV curable activator layer on the pattern layer to obtain a water pressure transfer film structure, the activator layer is located above the water-soluble film and the pattern layer and filled in two Between the spaced pattern regions, the activator layer at least partially penetrates into the pattern layer to be mutually soluble with the pattern layer, and includes a hydrophilic acrylate monomer and a hydrophobic acrylate monomer, and the activation The specific gravity of the agent layer is greater than 1.00 and not greater than 1.25; (c) Place the water-soluble film of the water pressure transfer film structure on the water surface to soften the water-soluble film and at the same time make the activator layer move towards The water-soluble film is concentrated and squeezed between the pattern areas so that the bottom surface of the activator layer filled between the two spaced pattern areas is lower than the bottom surface of the pattern layer to obtain a softened water pressure transfer Membrane structure; and (d) contacting an object with the activator layer of the softened water pressure transfer film structure and pressing the water-soluble film of the softened water pressure transfer film structure into the water to make the softened The water pressure transfer film structure covers the surface of the object.

The effect of the present invention is that the water pressure transfer method for generating relief lines does not need to use a leveling agent, and a transfer film structure with relief lines can be obtained.

The content of the present invention will be described in detail below:

Preferably, the activator layer does not contain a leveling agent. More specifically, the leveling agent refers to a polysiloxane-based leveling agent or a polyacrylate-based leveling agent.

Preferably, the hydrophilic acrylate monomer is selected from ethoxylated trimethylolpropane triacrylate (EO-TMPTA), ethoxylated bisphenol A dimethacrylate ( ethoxylated bisphenol-A dimethacrylate, EO-BPADMA), ethoxylated 3-methyl-1,5-pentanediyl diacrylate (EO-MPDDA), ethoxylated 3-methyl-1,5-pentanediyl diacrylate (EO-MPDDA) Ethoxylated pentaerythrityl tetraacrylate or a combination thereof. In a specific embodiment of the present invention, the hydrophilic acrylate monomer is triethoxylated trimethylolpropane triacrylate (EO3-TMPTA).

Preferably, the hydrophobic acrylate monomer is selected from propoxylated neopentyl glycol diacrylate (PO-NPGDA), propoxylated glyceryl triacrylate (propoxylated glyceryl triacrylate, PO-GTA), propoxylated trimethylolpropane triacrylate (PO-TMPTA), propoxylated pentaerythrityl tetraacrylate (propoxylated pentaerythrityl tetraacrylate), or a combination thereof. In a specific embodiment of the present invention, the hydrophobic acrylate monomer is dipropoxylated neopentyl glycol diacrylate (PO2-NPGDA).

Preferably, the weight ratio of the hydrophilic acrylate monomer to the hydrophobic acrylate monomer ranges from 2:1 to 3:1.

Preferably, in this step (c), the bottom surface of the activator layer filled between the two spaced pattern regions is lower than the bottom surface of the pattern layer by at least 20 μm.

Preferably, the thickness of the pattern layer ranges from 0.5 to 5 μm. More preferably, the thickness of the pattern layer ranges from 1 to 2.5 μm.

Preferably, the thickness of the water-soluble film ranges from 25 to 45 μm.

Preferably, after the step (d), it further includes a step (e) of irradiating the softened water pressure transfer film structure with ultraviolet light to cure the pattern layer and the activator layer. More preferably, after the step (e), a step (f) of removing the water-soluble film is further included.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are represented by the same numbers.

The present invention will be further described with reference to the following embodiments, but it should be understood that the embodiments are for illustrative purposes only, and should not be construed as limiting the implementation of the present invention.

An embodiment of the water pressure transfer method for generating relief lines of the present invention includes the following steps:

Step (a), referring to FIG. 1, a pattern layer 2 is formed on a water-soluble film 1 with ultraviolet curable ink. The pattern layer 2 includes at least two pattern areas 21 spaced apart. In this embodiment, the thickness of the pattern layer 2 is 2 μm, and the thickness of the water-soluble film 1 is 40 μm.

Step (b), referring to FIG. 2, forming an ultraviolet light curable activator layer 3 on the pattern layer 2 to obtain a water pressure transfer film structure. The activator layer 3 is located on the water-soluble film 1 and The pattern layer 2 is above and filled between two spaced pattern areas 21. The activator layer 3 at least partially penetrates into the pattern layer 2 to be mutually soluble with the pattern layer 2, and includes triethoxylated trimethylolpropane triacrylate (EO3-TMPTA) and dipropoxylated diacrylic acid Neopentyl glycol ester (PO2-NPGDA) (weight ratio is 2:1), and the specific gravity of the activator layer 3 is 1.14.

Step (c), referring to FIG. 3, place the water-soluble film 1 of the water pressure transfer film structure on the water surface to soften the water-soluble film 1 and at the same time make the activator layer 3 face the two spaced pattern areas 21 to concentrate and sink the water-soluble film 1 so that the bottom surface of the activator layer 3 filled between the two spaced pattern areas 21 is lower than the bottom surface of the pattern layer 2 to obtain a softened water Pressure transfer film structure. In this embodiment, the bottom surface of the activator layer 3 filled between the two spaced pattern regions 21 is lower than the bottom surface of the pattern layer 2 by 20 μm.

Step (d), referring to FIG. 4, contact an object 4 to the activator layer 3 of the softened water pressure transfer film structure and press the water-soluble film 1 of the softened water pressure transfer film structure into water, So that the softened water pressure transfer film structure covers the surface of the object 4.

Step (e), referring to FIG. 5, irradiate the softened water pressure transfer film structure with ultraviolet light to cure the pattern layer 2 and the activator layer 3. At this time, the activator layer 3 is in a microphase separation state. That is, on the microscopic scale or mesoscopic scale, the repeating unit formed by EO3-TMPTA and the repeating unit formed by PO2-NPGDA are in a phase-separated state, but on the macroscopic scale ), the two are not stratified.

Step (f), referring to FIG. 6, remove the water-soluble film 1 to obtain a transfer film structure that closely covers the surface of the object 4 and has a relief pattern.

In summary, the water pressure transfer method for generating reliefs of the present invention uses the activator layer 3 comprising the hydrophilic acrylate monomer and the hydrophobic acrylate monomer without the use of a leveling agent. The activator layer 3 concentrates and sinks and squeezes the water-soluble film 1 between two spaced pattern areas 21, so that the bottom surface of the activator layer 3 filled between the two spaced pattern areas 21 is lower than the The bottom surface of the pattern layer 2 can obtain the transfer film structure that closely covers the surface of the object 4 and has a relief pattern, so that the purpose of the invention can be achieved.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

1: Water-soluble film 2: Pattern layer 21: Pattern area 3: Activator layer 4: Object

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: [Figure 1] is an incomplete cross-sectional schematic diagram of an embodiment of the water pressure transfer method for generating relief lines of the present invention, illustrating the step (a) of the embodiment; [Figure 2] is an incomplete schematic cross-sectional view of this embodiment, illustrating step (b) of this embodiment; [Figure 3] is an incomplete schematic cross-sectional view of this embodiment, illustrating step (c) of this embodiment; [Figure 4] is an incomplete schematic cross-sectional view of this embodiment, illustrating the step (d) of this embodiment; [Figure 5] is an incomplete schematic cross-sectional view of this embodiment, illustrating step (e) of this embodiment; and [Figure 6] is an incomplete schematic cross-sectional view of this embodiment, illustrating the step (f) of this embodiment.

1: Water-soluble film

2: Pattern layer

21: Pattern area

3: Activator layer

Claims (8)

A hydraulic transfer method for producing relief, comprising the following steps: (a) forming a pattern layer with ultraviolet curable ink on a water-soluble film, the pattern layer including at least two spaced pattern areas; (b) A UV-curable activator layer is formed on the pattern layer to obtain a water pressure transfer film structure. The activator layer is located above the water-soluble film and the pattern layer and filled in the two-phase space Between the patterned areas, wherein the activator layer at least partially penetrates into the pattern layer to be mutually soluble with the pattern layer, and includes a hydrophilic acrylate monomer and a hydrophobic acrylate monomer, and the activator layer The specific gravity is greater than 1.00 and not greater than 1.25. The hydrophilic acrylate monomer is selected from ethoxylated trimethylolpropane triacrylate, ethoxylated bisphenol A dimethacrylate, ethoxylated 3-methyl-1,5-pentanediol diacrylate, ethoxylated pentaerythritol tetraacrylate or a combination thereof, the hydrophobic acrylate monomer is selected from propoxylated neopentyl glycol diacrylate, Propoxylated glycerol triacrylate, propoxylated trimethylolpropane triacrylate, propoxylated pentaerythritol tetraacrylate or a combination thereof; (c) placing the water-soluble film of the hydraulic transfer film structure On the water surface to soften the water-soluble film, and at the same time make the activator layer concentrate and sink between the two spaced pattern areas and squeeze the water-soluble film to fill the space between the two spaced pattern areas The bottom surface of the activator layer is lower than the bottom surface of the pattern layer to obtain a softened water pressure transfer film structure; and (d) contact an object with the activator layer of the softened water pressure transfer film structure and The water-soluble film of the softened water pressure transfer film structure is pressed into the water, so that the softened water pressure transfer film structure covers the surface of the object. The water pressure transfer method for producing relief according to claim 1, wherein the activator layer does not contain a leveling agent. The water pressure transfer method for generating relief according to claim 1, wherein the weight ratio of the hydrophilic acrylate monomer to the hydrophobic acrylate monomer ranges from 2:1 to 3:1. According to the hydraulic transfer method for generating relief as described in claim 1, in this step (c), the bottom surface of the activator layer filled between two spaced pattern areas is lower than the bottom surface of the pattern layer At least 20μm. The water pressure transfer method for generating relief as described in claim 1, wherein the thickness of the pattern layer is in the range of 0.5-5 μm. The water pressure transfer method for generating relief according to claim 1, wherein the thickness of the water-soluble film is in the range of 25 to 45 μm. The hydraulic transfer method for generating relief as described in claim 1, after the step (d), further includes a step (e) of irradiating the softened hydraulic transfer film structure with ultraviolet light, To cure the pattern layer and the activator layer. The water pressure transfer method for generating relief as described in claim 7, after the step (e), further includes a step (f) of removing the water-soluble film.

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