KR101268749B1 - Insert mold transcription film with glossy or lusterless pattern and method for fabricating the same - Google Patents

Abstract

The present invention relates to an insert mold transfer film having a glossy or matte pattern and a method of manufacturing the same, forming a first release layer on the base film, and forming a second release layer pattern on the first release layer. Forming a hard layer on the first release layer and the second release layer pattern, and transferring the second release layer pattern to a surface of the hard layer facing the first release layer; Forming a printing layer on the hard layer, forming a primer layer on the printing layer, and forming an adhesive layer on the primer layer, the surface of the hard layer or the printing layer The present invention relates to a matte pattern to appear at the same time, and to easily implement a variety of effects, such as a soft metallic or pearly with the print layer as a background.

Description

Insert mold transfer film having a gloss or matte pattern and a method of manufacturing the same {INSERT MOLD TRANSCRIPTION FILM WITH GLOSSY OR LUSTERLESS PATTERN AND METHOD FOR FABRICATING THE SAME}

The present invention relates to an insert mold transfer film having a glossy or matte pattern and a method of manufacturing the same. More specifically, by using two types of release films for manufacturing a transfer film, both glossy and matte, the glossy and matte effect is hard By allowing the transfer to the layer, it relates to a technology that can maximize the beautiful pattern effect that could not be expressed previously.

In general, a case of a small electronic product such as a mobile phone is manufactured by injection molding by using a synthetic resin material, and the injection molded product such as a mobile phone case is coated with a UV coating or a printing film to protect the surface or make it beautiful.

On the other hand, in recent years, the keypad of the mobile terminal or the window surrounding the LCD liquid crystal is made of a durable metal material (metal), fine hair on the surface to give a decorative beauty to the surface of the metal keypad or metal window, etc. The method of forming a line or forming a pearl effect layer further is used.

However, in the past, when the decorative effect layer was formed on the surface of such a metal keypad or metal window, only the gloss effect of the printing layer such as the metal deposition layer could be obtained.

In order to exhibit a matte effect on the deposited layer, a separate roughness must be controlled, and thus a high cost is required. In addition, when a new effect layer is added using a metal, the process becomes complicated and the cost increases.

Therefore, the conventional insert mold transfer film has a limitation in implementing a three-dimensional, high-quality decorative effect, such as a variety of logos, patterns.

The present invention is to allow the glossy and matte pattern to appear on the hard layer of the transfer film at the same time, by using a release layer formed on the base film in combination of the two types of glossy release layer and matte release layer, It is an object of the present invention to provide a method of manufacturing an insert mold transfer film which allows a matte pattern effect to be transferred to a hard layer and exhibits a new effect not previously seen.

In addition, an object of the present invention is to provide an insert mold transfer film that provides excellent processing characteristics while obtaining a high-quality and various forms of printing effects such as a pearly or soft metallic feel on a glossy and matte pattern.

An insert mold transfer film manufacturing method according to an embodiment of the present invention comprises the steps of forming a first release layer on the base film, a step of forming a second release layer pattern on the first release layer, and the first Forming a hard layer on top of the release layer and the second release layer pattern, the second release layer pattern is transferred to the surface of the hard layer facing the first release layer, and a printed layer on the hard layer And forming a primer layer on the print layer and forming an adhesive layer on the primer layer.

Here, the base film is preferably manufactured using a PET (Poly Ethylene Terephthalate) or PETG (Poly Ethylene Terephthalate Glycol) resin.

Next, the first release layer is a glossy release layer, the second release layer pattern is a matte release layer pattern, the first release layer is a matte release layer, the second release layer pattern is a glossy release layer Patterns may have respective embodiments.

In this case, the matte release layer is preferably implemented using nanosilica.

Next, the hard layer is to form a double-curable hard layer, it is preferable to form a semi-cured state by applying the hard layer using an emboss belt or roller, and then irradiated with UV.

At this time, the double-curable hard layer is a material containing 91 to 95% by weight of the soft oligomer acrylate and 5 to 9% by weight of the photoinitiator based on 100% by weight of the photocurable solid, the soft oligomer acrylate is urethane Preference is given to using at least one of acrylate, urethane methacrylate, epoxy acrylate, epoxy methacrylate, ester acrylate, ester methacrylate, acrylic acrylate, polyester acrylate, amine modified acrylate.

The double-curable hard layer is preferably formed by mixing 5 to 45 parts by weight of an organic solvent with respect to 100 parts by weight of a photocurable solid.

Next, the printing layer comprises at least one of a metal effect layer, a pearl ink layer and a mirror ink layer, the metal effect layer is preferably formed using at least one selected from aluminum, copper and titanium.

Next, after the forming of the adhesive layer, the step of transferring the adhesive layer to the injection molding and the step of removing the base film and the matte release layer may be further performed, in the step of transferring the adhesive layer to the injection molding The matte release layer pattern of the hard layer is preferably transferred to the printed layer.

In addition, the insert mold transfer film according to an embodiment of the present invention is manufactured by the above-described method, it characterized in that it comprises a pattern in the form of a mixed gloss and matte pattern.

Insert mold transfer film comprising a glossy and matte pattern according to the present invention and a method for manufacturing the same, using a release layer in two types of glossy and matte release layer, so that the matte pattern is transferred on a glossy background, or a glossy background The pattern is transferred, thereby providing an effect of transferring a new effect pattern to the hard layer.

Accordingly, the present invention can form various forms of patterns, trademarks and logos, and provides an effect that can express the texture and effect luxuriously.

In addition, the insert mold transfer film of the present invention has a high elongation by using a hardened double layer, and has excellent moldability. It can be neatly separated, and the process of implementing a pattern directly on the printed layer can be omitted, thereby providing an effect of improving productivity.

1 is a flowchart illustrating a method of manufacturing an insert mold transfer film having a glossy and matte pattern according to an embodiment of the present invention.
2 and 3 are cross-sectional views showing the insert mold transfer film structure having a glossy and matte pattern according to an embodiment of the present invention.
Figure 4 is a plan view showing the surface of the injection molded product formed by the insert mold transfer film according to an embodiment of the present invention.
Figure 5 is a flow chart illustrating a method of manufacturing an insert mold transfer film having a glossy and matte pattern according to another embodiment of the present invention.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but is capable of many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, an insert mold transfer film having a glossy or matte pattern according to the present invention and a method of manufacturing the same will be described in detail with reference to the accompanying drawings.

First, to form a matte / matte release layer on the base film, the matte release layer to form a pattern to transfer the matte pattern on the hard layer, the insert mold transfer film manufacturing method of sequentially coating the print layer, primer layer and adhesive layer Follow.

At this time, the portion to be bonded with the actual injection is an adhesive layer, when the adhesive layer is based on the structure is formed in the order of the adhesive layer, primer layer, printing layer, hard layer, release layer and the base film in order.

Therefore, the insert mold transfer film according to the present invention is not limited by the expression of upper or lower, and should be understood based on the overall lamination order.

Next, while the insert mold transfer film according to the present invention is in-mold (In-mold) injection molding, the surface roughness of the glossy or matte release layer is transferred to the hard layer to form a new pattern that has not been previously formed It is possible to produce an injection molding having a pearly or mirror effect on the background of other printed layers.

At this time, the product containing the existing matte pattern formed a matte pattern directly on the metal deposition layer, it was difficult to obtain a matte effect.

In other words, when the surface of the metal deposition layer is formed by scratching, the miscellaneous material is easily introduced into the printing layer, and the surface roughness of the metal deposition layer has to be forcibly controlled, so that it is difficult to control the process.

Therefore, in the present invention, by using a method of forming a matte release layer pattern on the gloss release layer or forming a matte release layer pattern on the matte release layer, the process can be simplified while showing a direct matte / matte effect on the hard layer. It was made.

1 is a flowchart illustrating a method of manufacturing an insert mold transfer film having a glossy and matte pattern according to an embodiment of the present invention.

Referring to Figure 1, preparing a base film (S100) and the step of forming a glossy release layer on the base film (S110), and the step of forming a matte release layer pattern on the glossy release layer (S120) and And forming a hard layer on the gloss release layer and the matte release layer pattern so that the matte release layer pattern is transferred to the surface of the hard layer facing the gloss release layer (S130), and the top of the hard layer. Forming a print layer in (S140), forming a primer layer on the printed layer (S150) and forming an adhesive layer on the primer layer (S160).

Insert mold transfer film having a glossy and matte pattern can be completed by the process so far, and then, transferring the adhesive layer to an injection molding (S170) and removing the base film and the glossy and matte release layer. Perform further (S180).

In this process, the matte release layer pattern of the hard layer may be finally transferred to the printed layer. The transfer of the matte release layer pattern to the printed layer is possible because the thickness of the hard layer is substantially thin.

Therefore, when the thickness of the hard layer is thick, the matte release layer pattern may not appear in the printed layer, and thus the present invention is not limited thereto.

In addition, although the embodiment has been described with reference to an example in which a matte release layer pattern is formed on a glossy release layer, as shown in FIG. 5, an embodiment in which a glossy release layer pattern is formed on a matte release layer is also possible.

In addition, an embodiment in which a matte release layer is formed on the matte release layer pattern or an example in which a matte release layer is formed on the matte release layer pattern is possible. It shall explain mainly.

Looking at the insert mold transfer film structure of the present invention manufactured by the method described above in more detail as follows.

2 and 3 are cross-sectional views showing the insert mold transfer film structure having a glossy and matte pattern according to an embodiment of the present invention.

First, referring to FIG. 2, the base film 200, the glossy release layer 210, the matte release layer pattern 220, and the double-curable hard layer from the top to the bottom of the state shown as the insert mold transfer film structure according to the present invention. 230, a print layer 240, a primer layer 250, and an adhesive layer 260 are provided.

Next, the injection molding 270 is provided below the adhesive layer 260 to transfer the insert mold transfer film according to the present invention to the surface of the injection molding 270.

Next, when the transfer process of the insert mold transfer film is completed, as shown in FIG. 3, the double-curable hard layer 230 of the insert mold transfer film formed on the surface of the injection molding 270 is completely cured, and the base film 200, The matte release layer 210 and the matte release layer pattern 220 are removed to allow the matte pattern 310 and the matte pattern 310 to appear on the surface of the injection molded product 270.

Here, for convenience of description, the top-to-bottom order is described, but the insert mold transfer film is actually formed by placing the base film 200 on the bottom and stacking other layers thereon. Therefore, the actual manufacturing method of the insert mold transfer film according to the present invention will be described.

First, the material of the base film 200 is preferably manufactured using PET (Poly Ethylene Terephthalate) or PETG (Poly Ethylene Terephthalate Glycol) resin. PET or PETG resin has a better elongation than the general base film material, the insert mold transfer film according to the present invention can be used to maximize the moldability PET or PETG resin.

Next, it is preferable to use a melamine type mold release agent or a silicone type mold release agent for the mold release agent used for a glossy or matte release layer. Since the melamine-based or silicone-based release agent may be applied in a thin liquid, it is suitable as a material for bringing the base film 200 into close contact with the hard layer 230 formed in a subsequent process, and after the hard layer 230 is completely cured, It provides properties that allow the layer to fall easily.

In this case, the matte release layer pattern 220 may be transferred to the hard layer 230 by the adhesion between the base film 200 and the hard layer 230, and the hard layer may be roughly changed according to the surface roughness of the matte release layer pattern 220. The matting degree of 230 may be different.

Therefore, the surface roughness of the matte release layer pattern 220 according to the present invention is preferably implemented using nanosilica, but the present invention is not limited by the numerical range of the roughness.

Here, the surface roughness is preferably at a value exceeding a range in which the matt effect is hardly exhibited, so that the surface is too rough so that the matte pattern does not easily appear.

In addition, since the surface state of the glossy release layer 210 is transferred to the hard layer 230 in the portion where the matte release layer pattern 220 is not formed, a glossy pattern and a matte pattern may appear simultaneously on the hard layer 230. will be.

Therefore, the double-curable hard layer 230 as described above is applied to the surface of the hard layer 230 facing the glossy release layer 210 or the matte release layer pattern 220 by using an emboss belt or roller after applying the coating material. The matte pattern 300 and the matte pattern 310 is formed on.

Then, by partially curing by performing a primary UV irradiation process, the pattern of the matte pattern 300 and the glossy pattern 310 can be maintained.

As described above, the double-curable hard layer 230 of the present invention, which has received the matte pattern 300 and the glossy pattern 310, is soft, based on 100% by weight of the photocurable solids, so that the pattern can be more easily transferred. Preference is given to using a material comprising 91 to 95% by weight oligomer acrylate and 5 to 9% by weight photoinitiator.

At this time, the soft oligomer acrylate is selected from urethane acrylate, urethane methacrylate, epoxy acrylate, epoxy methacrylate, ester acrylate, ester methacrylate, acrylic acrylate, polyester acrylate, amine-modified acrylate Preference is given to using one or more.

In addition, the double-curable hard layer 230 is preferably formed by mixing 5 to 45 parts by weight of an organic solvent with respect to 100 parts by weight of a photocurable solid. When the content of the organic solvent is less than 5 parts by weight, the fluidity may be excessively lowered, thereby making it difficult to form a layer as a protective film. When the content of the organic solvent is more than 45 parts by weight, the fluidity may be excessively increased to maintain the film shape normally.

Next, the printing layer 240 is formed on the double hardenable hard layer 230. In this case, various effects may be obtained by the combination of the matte pattern 300 and the matte pattern 310 and the printed layer 240. In particular, the matte pattern 300 and the matte pattern 310 may be applied to the printed layer 240. In the case of the transfer, a damaging effect can also be obtained.

In addition, the print layer 240 may include at least one of a metal effect layer, a pearl ink layer, and a mirror ink layer, and the metal effect layer may be formed using at least one selected from aluminum, copper, and titanium.

In addition, it is possible to form a printed layer 240 using a polymer resin, in this case formed of a material comprising 25 parts by weight of pigment, 15 parts by weight of synthetic resin, and 5 parts by weight of hardener based on 100 parts by weight of the synthetic resin forming the binder. desirable.

At this time, it is more preferable to use a material made of a synthetic resin containing about 40% of a urethane copolymer.

In addition, the printing layer 240 is formed using a multi-color gravure printing machine, and is operated at a printing frequency determined by the multi-gravure printing machine. At this time, the print layer 240 is formed to have a thickness of 1.0 ~ 1.5㎛, the drying proceeds for 10 seconds at 100 ℃ and after drying the cross-linking of the print layer 240 after aging for 24 hours at 40 ℃ To complete.

In addition, in order to improve the adhesion of the print layer 240 and to improve the property of absorbing ink after printing, a transparent or translucent planarization layer may be further formed.

Such a planarization layer may further improve three-dimensional or depth by flattening the surface of the double-curable hard layer 230 having the matte pattern 300 and the glossy pattern 310 and adjusting the refractive index and color.

On the other hand, the print layer 240 may represent the entire transfer pattern alone, but may be partially printed to play a role of representing various designs, characters or trademarks in various colors, in this case as a decoration layer (Decoration) layer It can be called a metal effect layer.

At this time, the metal effect layer is preferably formed using a sputtering deposition process using at least one selected from aluminum, copper, and titanium, it is preferable to form a thickness of 50 ~ 150Å.

If the metal effect layer is formed to a thickness of less than 50Å, sufficient metal texture effect may not be obtained. If the metal effect layer is formed to a thickness of more than 150Å, the inherent texture that may be obtained by the matte pattern may collapse, and the entire insert mold There may be a problem that the thickness of the transfer film is increased, resulting in a deterioration in formability.

In addition, the metal effect layer according to the present invention may further include a background printing layer which may have a different color in addition to the unique metal color. In this case, after the sputtering deposition process is performed only on a portion of the logo or the like to obtain the metal texture effect, the remaining area may be formed as a background printing layer according to the printing layer forming process.

Accordingly, the print layer 240 according to the present invention may further include the metal effect layer as described above, and may further form a primer layer 250 on the print layer 240.

The primer layer 250 is preferably formed using a material made of acryl polyol or urethane copolymer having excellent ink absorption.

In addition, the primer layer 250 is preferably formed to have a predetermined refractive index with the double-curable hard layer 230 and the print layer 240, which is to prevent the rainbow phenomenon.

That is, when the matte pattern 300 formed on the double-curable hard layer 230 or the print layer 240 is reflected at a predetermined angle, an oil-shaped rainbow phenomenon may occur on the surface thereof. Rainbow phenomenon can be offset.

In addition, the primer layer 250 according to the present invention may also function as an adhesion auxiliary layer to facilitate bonding of the print layer 240 and the subsequent adhesive layer 260.

Therefore, the adhesive layer 260 is formed on the primer layer 250 to allow the insert mold transfer film according to the present invention to be smoothly adhered to the injection molding 270.

In the present invention, as described above, an excellent three-dimensional texture can be obtained through a hard layer including a matte pattern and a glossy pattern, and the decorative effect can be doubled.

In particular, by using a combination with a metal layer such as aluminum, copper, or the like, a pearl ink layer or a mirror ink layer may be used to obtain various logos or trademarks of more various patterns and embossed or intaglio patterns.

Figure 4 is a plan view showing the surface of the injection molding formed by the insert mold transfer film according to an embodiment of the present invention, it is possible to obtain the effect of the surface layer coated on the matte comb pattern.

Figure 5 is a flow chart illustrating a method of manufacturing an insert mold transfer film having a glossy and matte pattern according to another embodiment of the present invention.

5 is performed in the same manner as described with reference to FIG. 1, except that only the order of forming the glossy release layer and the matt release layer is changed.

Preparing a base film (S400) and the step of forming a matte release layer on the base film (S410), the step of forming a glossy release layer pattern on the matte release layer (S420), the matte release layer and Forming a hard layer on the glossy release layer pattern, the step of transferring the glossy release layer pattern on the surface of the hard layer facing the matte release layer (S430) and forming a printed layer on the hard layer Step (S440), the step of forming a primer layer on the printed layer (S450) and the step of forming an adhesive layer on the primer layer (S460).

By the process up to this, the shape of the insert mold transfer film having a glossy and matte pattern can be completed. Next, the step of transferring the adhesive layer to the injection molding (S470) and removing the base film and the glossy and matte release layer Perform further (S480).

Next, look at with respect to the insert mold transfer film properties of the present invention carried out above.

1. Comparison of characteristics of insert mold transfer film according to the present invention

Example 1

Melamine-based glossy release film was formed on the surface of the PET film base material, and a melamine-based matt release film pattern was formed on the base film. Next, a bicurable hard layer having a solid content of 95% by weight of the soft oligomer acrylate and 5% by weight of the photoinitiator was formed on the matte release film pattern.

Next, an aluminum metal effect layer having a thickness of 150 kPa was formed as a print layer, and a primer layer and an adhesive layer were formed on the metal effect layer to complete the manufacture of the insert mold transfer film.

Subsequently, the insert mold transfer film was transferred to an injection molding, and the base film and the release film were removed, so that a matte pattern and a glossy pattern appeared on the hard layer.

At this time, the hard layer is completely cured before removal of the base film and the release film, so that the removal process may be facilitated.

Example 2

All processes were performed in the same manner as in Example 1, except that the matte release film was formed first, and the glossy release film pattern was formed.

Comparative Example 1

All processes were performed in the same manner as in Example 1, but the gloss release layer pattern was used.

Comparative Example 2

All processes were performed in the same manner as in Example 1, but an opaque release layer pattern was used.

Comparative Example 3

All the same process as in Example 1, but the comb pattern was formed directly on the printed layer.

In order to examine the characteristics of the Examples and Comparative Examples, 10 samples were produced for each Example or Comparative Example to visually observe the clarity of the glossy pattern and matte pattern. As a result, they were classified into upper, middle, and lower grades, and the number of defects was examined by determining whether or not foreign matters were placed on the surface or the pattern patterns were damaged.

definition Number of defects Example 1 Prize 0/10 Example 2 Prize 0/10 Comparative Example 1 medium 2/10 Comparative Example 2 Prize 7/10 Comparative Example 3 Ha 6/10

As can be seen with reference to Table 1, in the case of the insert mold transfer film according to the present invention, the gloss pattern and the matte pattern are directly transferred to the hard layer, thereby significantly reducing the defective occurrence rate.

Therefore, the convenience of the process was increased, and the pattern pattern could be formed clearly.

As described above, the method of manufacturing the insert mold transfer film according to the present invention includes forming a release layer of two types of gloss and matt on the base film in advance, and allowing the matt release layer pattern to be transferred to the hard layer, thereby forming a pattern pattern. It can be easily implemented and can express various forms of patterns, trademarks and logos that can express the appearance of electronic products such as notebooks, especially among small appliances.

In addition, the insert mold transfer film of the present invention described above may have a high elongation by using a double-curable hard layer subjected to surface treatment. Therefore, it has excellent moldability, and even if the base film and the release film are removed after the insert mold transfer process, the pattern may appear neatly. For this reason, since the process of removing a foreign material and the cleaning process can be skipped after the formation of the pattern which includes a gloss and a matte, work is convenient and productivity can be improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Modification is possible. Accordingly, the spirit of the present invention should be understood only in accordance with the following claims, and all equivalents or equivalent variations thereof are included in the scope of the present invention.

200: base material layer 210: glossy release layer
220: matte release layer pattern 230: hard layer
240: printed layer 250: primer layer
260: adhesive layer 270: injection molding
300: matte pattern 310: matte pattern

Claims (14)

Forming a gloss release layer or a matt release layer on the base film;
Forming a matte release layer pattern on the gloss release layer or forming a glossy release layer pattern on the matte release layer;
A hard layer may be formed on the glossy release layer and the matte release layer pattern, and the matte release layer pattern may be transferred onto the surface of the hard layer facing the glossy release layer, or the matte release layer and the matte release layer pattern top. Forming a hard layer on the surface, such that the gloss release layer pattern is transferred to a surface of the hard layer facing the matte release layer;
Forming a printed layer on the hard layer;
Forming a primer layer on the printed layer; And
Forming an adhesive layer on the primer layer; Insert mold transfer film manufacturing method comprising a.
The method of claim 1,
The base film is
Method for producing an insert mold transfer film, characterized in that it is produced using PET (Poly Ethylene Terephthalate) or PETG (Poly Ethylene Terephthalate Glycol) resin.
delete delete The method of claim 1,
The matt release layer is
Insert mold transfer film manufacturing method characterized in that the implementation using nano-silica.
The method of claim 1,
The hard layer
Forming a double-curable hard layer, after applying the hard layer using an emboss belt or a roller, and the UV-irradiated insert mold transfer film manufacturing method, characterized in that formed in a semi-cured state.
The method according to claim 6,
The double hardenable hard layer
A method for producing an insert mold transfer film, comprising using a material comprising 91 to 95% by weight of a soft oligomer acrylate and 5 to 9% by weight of a photoinitiator based on 100% by weight of a photocurable solid.
The method of claim 7, wherein
The soft oligomer acrylate is
At least one of urethane acrylate, urethane methacrylate, epoxy acrylate, epoxy methacrylate, ester acrylate, ester methacrylate, acrylic acrylate, polyester acrylate, and amine-modified acrylate. Insert mold transfer film manufacturing method.
The method according to claim 6,
The double hardenable hard layer
A method for producing an insert mold transfer film, characterized by mixing 5 to 45 parts by weight of an organic solvent with respect to 100 parts by weight of a photocurable solid.
The method of claim 1,
The print layer is
An insert mold transfer film manufacturing method comprising at least one of a metal effect layer, a pearl ink layer and a mirror ink layer.
The method of claim 10,
The metal effect layer is
A method for producing an insert mold transfer film, characterized in that formed using at least one selected from aluminum, copper and titanium.
The method of claim 1,
After the step of forming the adhesive layer,
Transferring the adhesive layer to the injection molded product; And
Removing the base film and the matte release layer; Insert mold transfer film manufacturing method characterized in that the further.
The method of claim 12,
In the step of transferring the adhesive layer to the injection molding,
And a matte release layer pattern of the hard layer is transferred to the printing layer.
It is manufactured by the method of Claim 1,
Insert mold transfer film, characterized in that it comprises a pattern of a mixture of glossy and matte pattern.

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