KR20190112934A - Method manufacturing transferred body used for sublimation transfer and transferred body manufactured thereby - Google Patents

Abstract

The present invention relates to a method for manufacturing a transferred body used for sublimation transfer. Unlike the conventional technique of manufacturing a transferred body by spray coating or roll coating directly on a metal substrate, a coating film of a required physical property such as a skin layer for sublimation transfer is first coated on a plastic substrate such as PET, and then it is laminated or transferred onto a metal substrate or the like. So, inexpensive and easy processes compared to the prior art minimize surface defects and have a more uniform surface to realize high quality sublimation transfer printing.

Description

TECHNICAL MANUFACTURING TRANSFERRED BODY USED FOR SUBLIMATION TRANSFER AND TRANSFERRED BODY MANUFACTURED THEREBY}

The present invention relates to a method for manufacturing a sublimation transfer subject and a sublimation transfer subject manufactured thereby, and more particularly, to minimize problems such as deterioration of surface characteristics due to foreign substances or surface irregularities on the surface of the substrate. The present invention relates to a method for producing a sublimation transfer subject and a sublimation transfer subject which enables the production of high quality sublimation transfer products.

Sublimation transfer is a digital printing method that combines printing technology and dyeing technology. The transfer paper printed by transfer ink without making the plate is bonded to the object to be transferred, and the image is transferred by compressing it at a specific temperature and pressure of 160-220 degrees. To make the product you want. In this way, when the thermal compression is applied, the ink of the printed transfer paper is vaporized immediately without undergoing a liquefaction process at a high temperature, and at the same time, when gasified dye enters the pores of the coating surface of the workpiece widened by heat, and the thermal compression is stopped. When the temperature falls again, the sublimed dye solidifies again and remains under the surface, thus integrating without any protrusions or layers on the surface.

  In the prior art for the production of the transfer object used in the sublimation transfer, a method of forming a skin layer or the like, which firmly holds the ink vaporized and penetrated during the sublimation transfer by spraying on a metal substrate such as aluminum This is widely known.

However, according to the method of manufacturing the transfer object using the spray method, it is difficult to coat the large area of the transfer object with the spray uniformly at the front and back at a time, and thus all spray methods gradually move the sprayer from one end to the other end. In this case, the smaller the atomized particles, the more beautiful the surface can be obtained.However, the surface of the coating layer formed by volatilization of the solvent is irregular in the process of flying the particles and reaches the surface of the workpiece. It is difficult to obtain a uniform surface, such as overlapping coating, and when the surface is dried and cured with various particles including protruding portions or dust brought in from the outside, irregular surfaces are caused.

In addition, there are many unavoidable problems such as surface defects such as orange peel, pinholes, bubbles, stains, and blemishes caused by foreign substances such as dust, which are commonly generated in spray coatings. When there is no perfect one-to-one surface contact, the printed image is irregularly transferred or there is no consistent color, which is a cause of failure of the final product. It costs money.

In addition, when the transfer target is manufactured on the metal substrate using a spray method, foreign substances or protrusions on the surface of the metal substrate or oil components that are inevitably used in the metal substrate manufacturing process by rolling are easily projected onto the surface of the product as it is. It will have a big negative effect on quality, so perfect pre-treatment is needed to overcome this problem, so it is necessary to have expensive dedicated equipment or to use expensive anodizing or pre-coated aluminum panel which is made in advance through this process. However, this is a factor that makes the product price more expensive, which in turn hinders the expansion of the sublimation printing market, which is one of convenient printing methods.

Korean Patent Publication No. 10-2011-0084203 (published: 2011.07.21) Korean Patent Publication No. 10-2010-0008871 (Published: 2010.01.27) Japanese Laid-Open Patent No. 2010-053197 (Published: 2010.03.11)

The present invention provides a method of manufacturing a sublimation transfer member and a sublimation transfer substrate which enables easier and economical implementation of superior and uniform sublimation transfer printing quality by minimizing defects on the surface of a transfer body and forming a more uniform surface. Its purpose is to provide carcasses.

The present invention to solve the above problems, (a) forming a skin layer on one surface of the thermoplastic plastic film; And (b) forming an adhesive layer on the other side of the thermoplastic plastic film and adhering to one side of the substrate.

In this case, the thermoplastic film may be made of polyethylene terephthalate (PET).

In addition, the thermoplastic film may be made of polyethylene terephthalate (PET) containing a white pigment.

In addition, the skin layer may be formed after forming a base color layer on one surface of the thermoplastic film in the step (a).

In addition, the step (a) is a bar coating, dip coating, gravure coating, comma coating, slot die coating or roll to roll coating using them Characterized in that can be made by.

In addition, the substrate may be made of a metal panel including aluminum, glass, tiles, pottery, wood and the like.

In addition, the other surface of the substrate is characterized in that it may further include forming a coating layer to impart corrosion resistance or improve aesthetics.

In addition, after sublimation transfer of photographs, etc., on the sublimation transfer subjects manufactured by the above method, additional topcoat coating using UV curing or catalytic curing is used to prevent additional detachment of the transferred sublimation dye and to prevent scratch and UV blocking. Characterized in that it may further comprise the step of further strengthening.

In addition, the present invention is another invention for solving the above problems (i) forming a skin layer on a release substrate; (ii) forming a background color layer on the skin layer; (iii) adhering the base layer to one surface of the substrate; And (iv) exfoliating the release substrate.

In this case, the release substrate may be a polyolefin (Poly olefin) film or a release treated polyethylene terephthalate (PET) film.

The step bar coating, dip coating, gravure coating, comma coating, slot die coating or roll-to-roll coating using them can be achieved. It is characterized by being.

In addition, the substrate may be made of a metal panel including aluminum, glass, tiles, ceramics, wood and the like.

In addition, the other surface of the substrate is characterized in that it may further include forming a coating layer to impart corrosion resistance or improve aesthetics.

And, the present invention can be produced by the above-described manufacturing method or other manufacturing method, the substrate (substrate); A thermoplastic layer formed on the substrate; And a skin layer formed on the thermoplastic plastic layer.

In this case, the sublimation transfer object may further include a ground color layer interposed between the thermoplastic layer and the skin layer.

The method for manufacturing a sublimation transfer object according to the present invention is different from the conventional art of manufacturing a transfer object by spray coating or roll coating directly on a metal substrate, and a skin layer for sublimation transfer on a plastic substrate such as PET. By coating the coating film of the required physical property first, and then laminating or transferring it on a substrate such as a metallic substrate, the surface defect is minimized through an inexpensive and easy process compared to the prior art, and the surface has a more uniform surface. It is possible to manufacture a sublimation transfer subject that can implement sublimation transfer printing.

1 is a cross-sectional view showing a laminated structure of an example of a sublimation transfer target object according to the present invention.

In describing the present invention, when it is determined that detailed descriptions of related known functions or configurations may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

Embodiments according to the concept of the present invention can be variously modified and can have various forms, and specific embodiments will be illustrated in the drawings and described in detail in the present specification or application. However, this is not intended to limit the embodiments in accordance with the concept of the present invention to a particular disclosed form, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. As used herein, the terms "comprise" or "having" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof that is described, and that one or more other features or numbers are present. It should be understood that it does not exclude in advance the possibility of the presence or addition of steps, actions, components, parts or combinations thereof.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail.

The present invention provides a high-quality sublimation transfer printing by minimizing surface defects and having a more uniform surface through an inexpensive and easy process compared to the conventional technology of manufacturing a transfer object by spray coating or metal sheet roll coating directly on a metal substrate. An object of the present invention is to provide a method for manufacturing a sublimation transfer subject.

To this end, the present invention, (a) forming a skin layer on one surface of the thermoplastic film; And (b) forming an adhesive layer on the other side of the thermoplastic plastic film and adhering to one side of the substrate.

In the step (a), unlike the prior art, the ink is impregnated and retained on one surface of the thermoplastic plastic film such as polyethylene terephthalate (PET) without forming a functional layer for sublimation transfer directly on a substrate such as an aluminum panel. A functional layer for sublimation transfer, such as a skin layer, is formed.

The material of the thermoplastic film is not particularly limited, and in addition to the above-mentioned PET, polypropylene (PP), polycarbonate (PC), polyimide (PI), poly (methyl methacrylate) (PMMA), polystyrene (PS) Although it may consist of other well-known thermoplastics, such as polyethylene terephthalate (PET), a PET film is demonstrated as an example below.

For reference, the heat resistance of general PET film is 265 ℃, the heat deformation is 240 ℃, the continuous heat resistance is 150 ℃, and its mechanical strength is excellent and its shape is maintained well even at a high temperature of about 200 degrees as long as pressure is applied to the surface. The uniformity of R is relatively excellent and it is easy to obtain on the market.

In the present invention, the PET film may be a white film containing a white pigment such as titanium dioxide (TiO ₂ ), barium sulfate (BaSO ₄ ) as well as a transparent film.

The skin layer formed on the PET film is transparent enough to be indistinguishable from its lower layer, and requires chemical resistance, water resistance, strong adhesion, and the like, and when the solution is coated and dried to cure into a film Flexibility is also required to prevent cracking due to thermal shrinkage on the coating surface, and it must have physical properties such as ultraviolet rays, durability, and oxidation resistance so that the transferred print or photograph does not fade. Sublimation dye is applied to the coating surface coated with the coating solution. The instantaneous adhesion and holding power to the sublimation dye is good to be transferred deep into the film, and after the transfer should be easy to detach the printing paper or photo paper, it is preferably formed of a coating solution based on polyacrylic or polyester resin.

On the other hand, the thickness of the skin layer is not particularly limited, but when the thickness is less than 1 μm, the space where the sublimed dye penetrates is small, and thus the color development degree does not improve even when the color development degree is more than 30 μm. It is preferable to have a thickness of 1 to 30 μm unless it is economical and especially other physical properties are not improved.

Furthermore, in the step (a), even when using a transparent thermoplastic film as well as a white thermoplastic film, the background color layer is first coated before forming the skin layer for the purpose of adjusting the color of the sublimation transfer print if necessary. Can be.

The base color layer is formed on the transparent PET film to give a color of white or other texture, and is formed on a white PET film in particular, such as yellow white or blue white, so that the whiteness can be finely controlled during sublimation printing. Get extra color.

The skin layer and the background color layer may include bar coating, dip coating, gravure coating, comma coating, slot die coating, or roll to roll coating using the same. It is preferably formed by a wet coating process rather than spray coating.

As described above, since the present invention forms various functional layers for sublimation transfer such as a skin layer and a background color layer on the thermoplastic film, it does not cause a problem of surface defects due to foreign matter on the substrate or defects on the surface formed during the manufacturing process of the substrate. Existing aluminum substrates such as general aluminum panels may be used as they are, and even pre-treatment of the substrate does not cause a problem of surface defects according to the prior art by wiping with a solvent such as alcohol.

Next, step (b) forms an adhesive layer on the other surface of the skin layer or the background color layer and the thermoplastic film on which the skin layer is formed, and then adheres the thermoplastic film to one surface of the substrate through the adhesive layer. This is the step.

At this time, the base material may be made of various materials, without limitation on the type of the material, such as glass, wood, stone, as well as metals such as aluminum, the shape is not particularly limited as long as the base material having a smooth surface.

Furthermore, the present invention forms a rear coating layer on the other surface of the substrate of the sublimation transfer target for imparting corrosion resistance or improving aesthetics to the sublimation transfer target obtained by completing steps (a) and (b) as necessary. It may further comprise the step.

For example, in the case of an aluminum base, aluminum is exposed on the other surface of the surface on which the skin layer is formed and may be oxidized due to external factors, thereby transferring the corrosion resistant coating layer formed on the release film to the surface, thereby preventing corrosion on the exposed aluminum surface. Can be given.

In addition, after sublimation transfer of photographs, etc., on the sublimation transfer subjects manufactured by the above method, additional topcoat coating using UV curing or catalytic curing is used to prevent additional detachment of the transferred sublimation dye and to prevent scratch and UV blocking. Characterized in that it may further comprise the step of further strengthening.

Figure 1 is a schematic diagram showing a cross-sectional structure of the laminated structure of an example of the sublimation transfer object manufactured by the manufacturing method according to the present invention described above, the sublimation transfer object 10 is a back coating layer 16, the substrate ( 15), the adhesive layer 14, the thermoplastic film 13, the base color layer 12 and the skin layer (11) in the stacked structure in this order.

Hereinafter, the present invention will be described in more detail by taking as an example a method of forming a transfer object using a white PET film as the thermoplastic plastic film.

Prepare a white PET film with a thickness of 19 to 250㎛ and no primer applied (it can be used for a primer having heat resistance and excellent adhesion) or a corona-treated white PET film for surface adhesion. After coating the coating liquid made of resin material such as polyacrylic, polyurethane polyester, epoxy, etc., to which the dye transferred to the cotton can be well adhered, the film is coated to have a thickness of 2 to 50 μm, and then the film is coated with a 1 mm thick aluminum plate. After adhering with epoxy adhesive, etc., pass through laminating equipment, put into dryer and harden to make substrate for transfer.

The use of the white PET film is to make the image to be transferred to the surface thicker and at the same time to obtain the color development as a photograph. The difference occurs, and the process is not easy to follow. If it exceeds 250㎛, the whiteness and hiding power are improved, and the original color is well expressed and the process is easy, but the final product is relatively thick, so the original texture is good. Has the problem.

For reference, when the primer having a low heat resistance is treated on the surface, it is not preferable that the adhesion of the surface may be degraded or the color may be changed during the transfer process working at 200 degrees or more.

The present invention is another invention for solving the above-mentioned problems of the prior art comprising the steps of (i) forming a skin layer on a release substrate; (ii) forming a background color layer on the skin layer; (iii) adhering the base layer to one surface of the substrate; And (iv) exfoliating the release substrate.

Here, since the technical description of the skin layer, the background color layer, the substrate, and the like is as described above, a description thereof will be omitted.

The release substrate is preferably a polyethylene terephthalate (PET) film released by a polyolefin (PO) film or a silicone resin coating layer, etc., but also (i) kraft paper, glassine paper or plastic rinse. It may be made of release paper such as plastic rinsing kraft paper.

According to the above method, since the adhesive force formed between the base color layer and the base material by the adhesive is stronger than the bonding force with the release base material, as described above, after coating the skin layer and the base color layer for sublimation transfer on the release base material, If one side is bonded using an adhesive and then the release substrate is removed, a sublimation transfer object having a good surface state and a clean surface can be obtained as in the manufacturing method described above. At this time, various kinds of surfaces such as glossy surface or matte surface can be obtained depending on the state of the surface of the release substrate used.

In addition, after performing sublimation transfer of photographs and the like using the above-described sublimation transfer subjects, if the surface reinforcement coating including UV curing coating for surface protection is performed separately, the image by heating, which is a disadvantage of the conventional sublimation transfer printing method Can prevent re-sublimation of the product and improve UV resistance, which can cause scratch resistance and color change of sublimation dyes.

Hereinafter, the present invention will be described in more detail with reference to preferred embodiments. The examples presented are only specific illustrations of the invention and are not intended to limit the scope of the invention.

<Example>

SKC's white PET, Skrol SW03G 50µm, is dried using JStron SU 2 of JS Eye Co., Ltd., an acrylic coating solution to form a transfer surface layer in a coating line equipped with a clean room of a 100 class coating room. Coated and rolled up with a roll through a heat dryer.

This prepared 1 mm thick 1050 series extruded aluminum sheet was coated with one-component epoxy CEMEDINE EP 190 with heat resistance on one side of the panel, white PET for transfer on the upper side, and silicone release treatment on the other side. 50㎛ size of general PET fabric was bonded and cured and dried at 150 ° C for 30 minutes in a dryer to make a transfer material for sublimation transfer.

After printing the image photograph using Japanese EPSON inkjet printer equipped with the sublimation dye and Hansol Paper's dedicated sublimation transfer paper, it is superimposed with the sublimation transfer material prepared in advance and placed on a hot press for 1 minute at 180 degrees. After sublimation transfer, sublimation transfer paper was removed to make products.

Comparative Example 1

In a spray booth equipped with an exhaust system, white paint was applied to a 1050 series extruded aluminum sheet of 1 mm thickness using a spray gun, and then coated to a thickness of 50 μm, and then cured and dried at 130 degrees for 30 minutes using a hot air dryer. Using JStron SU2, which is an acrylic coating liquid to be formed, it was spray-coated to a thickness of 10 μm after drying to make a transfer body for sublimation transfer.

Subsequently, sublimation transcription was performed using a transfer paper as in the following example.

Comparative Example 2

Example and all the materials in the same manner and used a white PC film for the reflector of Bayer, Germany, not just a white PET film.

Comparative Example 3

Example and all the materials in the same manner and used a 300 PS thick white PS film.

<Comparative Example 4>

Example and all the materials were used in the same way and a commercially available sublimation coating solution was used.

Comparative Example 5

In the same manner as in the examples and all materials were used as the base substrate glass.

In addition, after the sublimation transfer is completed using a transparent UV paint on it after drying with a bar coater to a thickness of 10㎛ after passing through a UV curing machine to make a product.

Comparative Example 6

In the same manner as in the Examples and all materials, the coating solution was used JStron SU3 improved adhesion to the UV solution, and a flat white tile commercially available as a base substrate.

In addition, after the sublimation transfer is completed using a transparent UV paint on it after drying with a bar coater to a thickness of 10㎛ after passing through a UV curing machine to make a product.

As shown in the result table of Table 1, the product has almost no problem on the surface due to the coating method using a clean room in which foreign matters such as dust are precisely managed, unlike the existing spray type products, even when the external inspection is performed on the neck side. In addition, a slightly weaker surface in the existing conventional sublimation transfer method can be obtained through additional UV curing, resulting in a more advanced surface strength, such as scratches caused by the external environment.

In addition, if the UV curing is carried out in a clean room environment, it may also solve the appearance problem caused by the dust.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention belongs may be embodied in other specific forms without changing the technical spirit or essential features of the present invention. You will understand that. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

10: Sublimation Transfer Subject
11: skin layer
12: ground color layer
13: thermoplastic film
14: adhesive layer
15: description
16: back coating

Claims (9)

(a) forming a skin layer on one surface of the thermoplastic film; And
(b) forming an adhesive layer on the other side of the thermoplastic plastic film and adhering to one side of the substrate. The method of claim 1,
The thermoplastic plastic film is a method of manufacturing a sublimation transfer object, characterized in that consisting of polyethylene terephthalate (PET). The method of claim 2,
The thermoplastic plastic film is a method of manufacturing a sublimation transfer object, characterized in that made of polyethylene terephthalate (PET) containing a white pigment. The method of claim 1,
And forming a skin color layer on one surface of the thermoplastic film in the step (a), and then forming the skin layer. The method according to claim 1 or 4,
The step (a) is performed by bar coating, dip coating, gravure coating, comma coating, slot die coating or roll to roll coating using them. Method for producing a sublimation transfer object, characterized in that made. (i) forming a skin layer on the release substrate;
(ii) forming a background color layer on the skin layer;
(iii) adhering the base layer to one surface of the substrate; And
(iv) peeling off the release substrate. The method of claim 6,
The release base material is a polyolefin (PO) film or a release-treated polyethylene terephthalate (PET) film, characterized in that the method for producing a transfer article for transfer. The method of claim 6,
Steps (i) and (ii) are bar coating, dip coating, gravure coating, comma coating, slot die coating or roll to roll using them. roll) A method of manufacturing a sublimation transfer subject, characterized in that the coating is made. The method according to claim 1 or 6,
The substrate is a method of manufacturing a sublimation transfer object, characterized in that made of aluminum (Al).

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