KR20240007384A - Method of making decoration film using vacuum forming method - Google Patents

Abstract

The present invention relates to a decoration film, and more specifically, to a method of manufacturing a decoration film using a sheet patterning method through a vacuum forming method.

Description

Method of making decoration film using vacuum forming method {Method of making decoration film using vacuum forming method}

The present invention relates to a decoration film, and more specifically, to a method of manufacturing a decoration film using a sheet patterning method through a vacuum forming method.

In general, decoration films printed with various patterns are attached to furniture, electronic products, and building materials for interior design purposes, and are used in various fields such as wrapping, window processing, and surface finishing of various electronic products. .

For example, in electronic devices that use glass, interest is increasing in the effects that can be achieved through glass, such as creating a variety of external aesthetics. In particular, technology development regarding glass decoration films or decoration sheets (sometimes referred to as 'decorative films or decorative sheets') is being actively developed. For example, by attaching a decoration film to glass, a metallic texture or three-dimensional effect can be given to the appearance of the electronic device. In particular, the mobile and automobile design fields are increasingly demanding designs that achieve dynamic and dramatic effects.

Recently, the design of smartphones or various mobile communication terminals has tended to simply use a single color for the front window (e.g. black, etc.) and change the back cover design to various colors and various three-dimensional patterns. According to this trend, various methods of implementing decorations to differentiate the back cover are being explored.

Republic of Korea Patent Publication No. 10-1231508

The present invention provides a decoration film manufacturing method that enables the implementation of various pattern shapes with the effect of streamlining the process through a method of directly forming a pattern on the front surface of the sheet through vacuum forming, thereby providing a differentiated design. I want to do it.

The above and other objects and advantages of the present invention will become apparent from the following description of preferred embodiments.

The purpose is to prepare a base film layer; Forming a top pattern mold for vacuum forming; Forming a lower plate pattern mold for vacuum forming; and forming a pattern on the entire surface of the base film layer by placing the base film layer between the upper pattern mold and the lower pattern mold and vacuum forming it. It can be achieved by a decoration film manufacturing method comprising.

The base film layer is any one selected from the group consisting of polycarbonate (PC), polymethyl methacrylate (PMMA), polycarbonate polymethyl methacrylate (PCPMMA), or a combination thereof. It is characterized by

The upper plate pattern mold for vacuum forming and the lower plate pattern mold for vacuum forming are characterized in that the pattern is formed by processing a pattern design on one surface of each mold.

In the step of forming a pattern on the entire surface of the base film layer, the height of the pattern is 0.1 to 1 mm.

During the vacuum forming, it further includes the step of heat treating the base film layer,

The heat treatment is characterized in that it is performed at 300 to 390°C.

In the step of preparing the base film layer, a tint printing layer located on the back of the base film layer; a UV pattern layer located below the tint printing layer; A deposition layer located below the UV pattern layer; and a shielding printed layer located below the deposition layer; It is characterized by further comprising the step of forming.

According to the present invention, a pattern is formed on the base sheet itself for manufacturing a decoration film.

In other words, in the present invention, through a method of directly forming a pattern on the entire surface of the sheet using a vacuum forming method, it is possible to implement a variety of pattern shapes while simplifying the process compared to the existing method, thereby providing a differentiated design.

However, the effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

Figure 1 is a schematic diagram showing a top pattern mold and a processed pattern according to an embodiment of the present invention.
Figure 2 is a schematic diagram showing a lower plate pattern mold and a processed pattern according to an embodiment of the present invention.
Figures 3 and 4 are actual photos of the patterned base film implemented on the smartphone back cover.

Hereinafter, the present invention will be described in detail with reference to embodiments of the present invention and drawings. These examples are merely presented as examples to explain the present invention in more detail, and it will be apparent to those skilled in the art that the scope of the present invention is not limited by these examples. .

Additionally, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains, and in case of conflict, this specification including definitions The description will take precedence.

In order to clearly explain the proposed invention in the drawings, parts unrelated to the description have been omitted, and similar reference numerals have been assigned to similar parts throughout the specification. And, when it is said that a part "includes" a certain component, this means that it does not exclude other components, but may further include other components, unless specifically stated to the contrary. Additionally, “unit” as used in the specification refers to a unit or block that performs a specific function.

Identification codes (first, second, etc.) for each step are used for convenience of explanation. The identification codes do not describe the order of each step, and each step does not clearly state a specific order in context. It may be carried out differently from the order specified above. That is, each step may be performed in the same order as specified, may be performed substantially simultaneously, or may be performed in the opposite order.

One aspect of the present application includes preparing a base film layer; Forming a top pattern mold for vacuum forming; Forming a lower plate pattern mold for vacuum forming; and forming a pattern on the entire surface of the base film layer by placing the base film layer between the upper pattern mold and the lower pattern mold and vacuum forming the base film layer. It provides a decoration film manufacturing method including.

Hereinafter, implementation examples and examples of the present application will be described in detail with reference to the attached drawings. However, the present disclosure may not be limited to these implementations, examples, and drawings.

First, a base film layer can be prepared. The base film layer may be a base sheet that serves as a base material used when manufacturing a decoration film.

The base film layer may be any one selected from the group consisting of polycarbonate (PC), polymethyl methacrylate (PMMA), polycarbonate polymethyl methacrylate (PCPMMA), or a combination thereof. there is.

PC (Polycarbonate) sheet is a type of thermoplastic plastic and has characteristics such as impact resistance, heat resistance, weather resistance, self-extinguishing, and transparency. It has an impact resistance of about 150 times that of tempered glass, and has excellent flexibility and processability. It is often used as a substitute for acrylic, which is easily brittle and deformed, and as a supplement to general plate glass.

PCPMMA (Polycarbonate Polymethyl methacrylate) sheet is a type of special resin made by compressing PC (Polycarbonate) and PMMA (Polymethyl methacrylate) to form a composite sheet.

PMMA is a type of special resin, a polymer component of methyl methacrylate, and is characterized by excellent optical properties, weather resistance, surface strength, hardness, and moldability.

A printing layer can be formed on the back of the base film layer. The printing layer is

It includes a tint printing layer located on the back of the base sheet, a UV pattern printing layer located below the tint printing layer, a deposition layer located below the UV pattern printing layer, and a silk printing layer located below the deposition layer. can do.

The printed layer can be formed by selecting manufacturing methods and ingredients commonly used in the field without major limitations.

The tint printing layer may be manufactured using a commonly used ink, or may be manufactured in a film form by MDD (Micro Dry process decoration) using an ink containing a heat dissipation material.

The UV pattern printed layer may be a layer in which a pattern is printed on the lower side of the tint printed layer using an ultra-violet printing method.

The deposition layer is formed below the UV pattern printing layer, and may be formed by chemical vapor deposition (CVD) or physical vapor deposition (PVD).

The silk printing layer is formed on the lower side of the deposition layer by silk screen printing. Here, the silk printed layer can perform a shielding function.

Meanwhile, a scattering prevention layer may be further included between the tint printing layer and the UV pattern printing layer. This anti-scattering layer may be composed of one layer or multiple layers.

Next, the base film layer can be vacuum formed to form a pattern. That is, the present invention is characterized by forming a pattern directly on the entire surface of the base film layer through the vacuum forming, which can contribute to simplification of the process.

That is, in the present invention, by using a vacuum forming method using a mold in which a pattern is processed, the process steps of the existing patterning work can be effectively reduced, and very elaborate patterns such as argyle, diamond, etc. can also be applied to the base. It can be formed directly on the entire surface of the film layer. As a result, differentiated design effects can be achieved through realistic texture expression compared to existing decoration films.

Figure 1 is a schematic diagram showing an upper plate pattern mold and a processed pattern according to an embodiment of the present invention, and Figure 2 is a schematic diagram showing a lower plate pattern mold and a processed pattern according to an embodiment of the present invention.

Referring to FIGS. 1 and 2 together, first, a pattern design can be processed into a vacuum forming mold. The mold can be prepared with a flat plate-shaped upper and lower plate, and as long as it is for vacuum forming, which is commonly performed, there are no significant restrictions on the material and shape of the mold.

Next, pattern designs can be processed for the upper and lower plates of the mold, respectively. That is, in the present invention, the mold (upper plate and lower plate) is processed in advance with the same or different design on each side to form a pattern, so that the pattern can be more easily formed on the base film layer. For this purpose, an upper plate pattern mold 10 for vacuum forming and a lower plate pattern mold 20 for vacuum forming can be manufactured.

The shape of the pattern is not particularly limited, and the shape of the pattern mold can be set in various ways, for example, polygonal shapes such as triangles and squares, or round shapes.

The pattern design may be designed into any shape that can be processed, such as regular or irregular shapes. For example, the shape of the pattern design may be argyle, diamond, wavy, etc., but is not limited thereto, and the processing method may vary depending on the shape of the pattern design.

Next, the base film layer 100 may be placed between the upper plate pattern mold 10 and the lower plate pattern mold 20, and then vacuum forming may be performed to form a pattern. The vacuum forming can be performed using a vacuum thermoforming machine commonly used in the past, and known techniques can be followed for specific processes for performing this.

For example, the base film layer 100 can be placed between the molds and then compressed by pressure in a vacuum state. At this time, heat can be applied to the base film layer 100 to further improve formability. Heat treatment can be performed, for example, at 300 to 390°C. However, the specific method and conditions for performing the vacuum forming can be adjusted differently depending on the shape of the pattern to be formed.

The height (thickness) of the pattern formed during the vacuum forming may be, for example, 0.1 to 1 mm. If it exceeds the above-mentioned range, there is a risk that cracks may occur in the base film layer.

After vacuum forming is completed, commonly performed processes, such as cooling, can be performed without limitation. As a result, the base film layer 100 with a pattern formed on the entire surface, that is, a decoration film, can be completed.

In addition to the above-described layers or structures, components such as layers and structures commonly included in the mobile phone decoration film manufacturing field may be further included as long as they do not impair the physical properties of the base film layer on which vacuum forming is performed, and each component may be further included. Characteristics such as ingredients, manufacturing method, thickness, and shape for forming elements can also be changed in design without limitation by those skilled in the art.

Afterwards, an outer shell processing step can be performed in which the entire outer shape of the decoration film is trimmed and processed. The outer shell processing is performed by, for example, additional cutting, cutting, perforation, grinding, etc. to suit the desired overall appearance of the substrate. The specific outer processing method can be any method commonly used in the field without limitation.

According to one embodiment of the present invention, a pattern is formed on the base sheet itself for manufacturing a decoration film. In other words, in the present invention, through a method of forming a pattern on the entire surface of a sheet using a vacuum forming method, it is possible to realize various pattern shapes while simplifying the process compared to the existing method, thereby providing a differentiated design.

Figures 3 and 4 are actual photos of the patterned base film implemented on the smartphone back cover.

Referring to Figures 3 and 4 together, it can be seen that an argyle pattern and a diamond pattern were implemented in the base film layer through vacuum forming, respectively. According to one embodiment of the present invention, it is possible to simplify the process and provide aesthetic satisfaction to consumers by providing a luxurious appearance due to a more sophisticated design implementation.

Optimal embodiments are disclosed in the drawings and specification. Although specific terms are used here, they are used only for the purpose of explaining the present invention and are not used to limit the meaning or scope of the present invention described in the claims. Therefore, those skilled in the art will understand that various modifications and other equivalent embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the attached patent claims.

100: base film layer
10: Top pattern mold for vacuum forming
20: Lower plate pattern mold for vacuum forming

Claims (6)

Preparing a base film layer;
Forming a top pattern mold for vacuum forming;
Forming a lower plate pattern mold for vacuum forming; and
forming a pattern on the entire surface of the base film layer by placing the base film layer between the upper pattern mold and the lower pattern mold and vacuum forming it; Including, decoration film manufacturing method. According to paragraph 1,
The base film layer is any one selected from the group consisting of polycarbonate (PC), polymethyl methacrylate (PMMA), polycarbonate polymethyl methacrylate (PCPMMA), or a combination thereof. Characterized by a method of manufacturing a decoration film. According to paragraph 1,
A decoration film manufacturing method in which the upper plate pattern mold for vacuum forming and the lower plate pattern mold for vacuum forming are formed by processing a pattern design on one surface of each mold. According to paragraph 1,
In the step of forming a pattern on the entire surface of the base film layer,
A decoration film manufacturing method, characterized in that the height of the pattern is 0.1 to 1 mm. According to paragraph 1,
During the vacuum forming, it further includes the step of heat treating the base film layer,
A method of manufacturing a decoration film, characterized in that the heat treatment is performed under temperature conditions of 300 to 390 ° C. According to paragraph 1,
In the step of preparing the base film layer,
A tint printing layer located on the back of the base film layer;
a UV pattern layer located below the tint printing layer;
A deposition layer located below the UV pattern layer; and
a shielding printed layer located below the deposition layer; A decoration film manufacturing method, characterized in that it further comprises the step of forming.