JPH1015987A - Hairline interstice insert film, hairline interstice insert molding, and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hairline interstice insert molding having high design properties. SOLUTION: The hairline interstice insert film comprises an adhesive anchor layer 4 and a design print layer 6 sequentially formed on a transparent base sheet 2 formed with hairline interstices in such a manner that the layer 4 has a thickness smaller, than a depth of a recess of the interstice. The hairline interstice insert molding is obtained by disposing the film in an injection mold so that the sheet 2 is brought into contact with a mold surface, closing the mold, then injecting molding resin in the mold, and solidifying the resin to adhere the film to a resin molding 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair run-in insert film, a hair run-in insert molded product, and a method for producing the same, which are integrated on a molded product simultaneously with injection molding. It can be used for surface decoration such as surface materials, building interior and exterior materials, cabinet surface materials, kitchen door interior materials, and automobile interior parts.

[0002]

2. Description of the Related Art Conventionally, surface decoration of audio equipment and the like is performed by transferring a transfer foil in which a metal deposition layer or a pattern printing layer is sequentially formed on a transparent base sheet on which a hairline is formed, by heat transfer or simultaneous molding. It was done by a method such as attaching method.

[0003]

However, the hairline processing is a method in which the film is continuously fed to sandpaper and the film surface is cut like a hairline.
Cannot be patterned. Therefore, a metallized metal part with a hairline and a pattern printing part, a metallized metal part without a hairline and a pattern printing part, and a transparent window part without a metallized metal part and a pattern printing part were combined. Such a patterned design could not be formed on one base sheet.

[0004] An object of the present invention is to solve the above-mentioned problems and to provide a hairline insert molded product having high designability.

[0005]

Means for Solving the Problems In order to achieve the above object, a hairline-patterned insert film according to the present invention is provided on a transparent base sheet having hairlines, as described in claim 1. An adhesive anchor layer, a metal deposition layer or a pattern printing layer is sequentially formed, and the adhesive anchor layer has a thickness smaller than the depth of the hairline eye recess.

Alternatively, a hairline insert film in which a colorless and transparent layer having a thickness greater than the depth of the hairline concave portion is formed on a part of the adhesive anchor layer as described in claim 2 is also provided. Good.

[0007] Alternatively, a hairline insert film having a window on which a metal deposition layer and a picture printing layer are not formed on the colorless and transparent layer may be provided.

[0008] Alternatively, a hairline insert film having a window on which a metal deposition layer and a picture printing layer are not formed on an adhesive anchor layer may be used.

According to a fifth aspect of the present invention, there is provided a method of manufacturing a hairline-insert-molded article, wherein the hairline insert film according to any one of the first to third aspects is brought into contact with a base sheet and a mold surface. Placed in the injection mold,
After the mold is closed, the molding resin is injected into the mold, and the molding resin is solidified, thereby bonding the hairline insert film to the resin molded product.

Alternatively, as described in claim 6, the hairline insert film according to claim 4 is arranged in an injection mold so that the base sheet and the mold surface are in contact with each other, and after the mold is closed. The molding resin is injected into the mold, the molding resin is brought into contact with the adhesive anchor layer of the window of the hairline insertion film, and the molding resin is solidified, thereby bonding the hairline insertion film to the resin molded product. It is characterized by the following.

According to a seventh aspect of the present invention, there is provided a hairline insert-molded product in which a resin molded product and a hairline insert film are adhered to each other, wherein the metal-deposited portion has a hairline. Alternatively, a picture printing section, a metal deposition section or a picture printing section without a hairline, and a transparent window without a hairline are combined.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a hairline insert film, a hairline insert molded product and a method for producing the same according to the present invention will be described in detail with reference to FIGS. 1 is a hairline insert film, 2 is a base sheet, 3 is hairline irregularities, 4 is an adhesive anchor layer, 5 is a colorless and transparent layer, 6 is a picture printing layer, 7 is a metal deposition layer, 8 is a resin molded product, Reference numeral 9 denotes a hairline insert molded article, and reference numeral 10 denotes an adhesive layer.

The hairline insert film 1 has an adhesive anchor layer 4, a metal deposition layer 7, or a picture print layer 6 on a transparent base sheet 2 on which hairlines are formed.
Are sequentially formed. The adhesive anchor layer 4 has a thickness smaller than the depth of the base sheet 2 (FIG. 1).

The transparent base sheet 2 is a film or sheet made of various resins such as polyester, acryl, polypropylene, polyvinyl chloride, and polycarbonate. The thickness of the base sheet 2 is 10 μm to 500 μm.

The hair lines may be formed by a method in which the film is continuously fed to a sandpaper to cut the film surface in a hair line shape, or by a printing method using a pigmented resin ink. The cross section of the hairline is uneven. The depth of the concave and convex portions is preferably equal to or less than half the thickness of the base sheet 2, for example, 2 μm to 10 μm.
m.

The adhesive anchor layer 4 is composed of the base sheet 2, the pattern printing layer 6 or the metal deposition layer 7, and the adhesive layer 10.
This is a layer having a function as an anchoring agent for linking the base sheet 2 and a function as an adhesive layer 10 for making the base sheet 2 and the molding resin adhere to each other by directly adhering to the molding resin.
The anchor layer 4 having adhesiveness has adhesiveness to the molding resin itself, but the metal deposition layer 7 and the pattern printing layer 6
-It mainly has a function as an anchor layer between each layer of the adhesive layer 10 and the base sheet having the hairline. The adhesive anchor layer 4 is made of a thermosetting urethane-based, epoxy-based, acrylic-based, polyester-based, or melamine-based resin, or an ink made of an ultraviolet-curable resin in order to impart transparency and strength. It is formed by using. As a method for forming the anchor layer 4 having adhesiveness, there is a general-purpose printing method such as an offset printing method, a gravure printing method, or a flexographic printing method. The adhesive anchor layer 4 has such a thickness that the hairline of the base sheet 2 is not apparently lost. For example, it is a transparent layer having a thickness considerably smaller than the depth of the concave portion of the hairline and having substantially the same refractive index as the base film. Otherwise, when the colorless and transparent layer 5 is coated, the hairline eyes are unlikely to disappear. In order to form a thin film on the inner surface of the uneven portion of the hairline, the following may be performed. Using a fine-grained (shallow-depth) plate, reduce the viscosity as much as possible and print on the protrusions. If the viscosity is high, it is difficult to spread. In the concave portion, the inner surface of the concave portion is spread and spread by dripping of the ink from the convex portion.

The colorless transparent layer 5 may be formed on a part of the adhesive anchor layer 4 with a thickness larger than the depth of the hairline concave portion. By making the colorless and transparent layer 5 have substantially the same refractive index as the base sheet 2, the colorless and transparent layer 5
In the portion where is formed, the hairline of the anchor layer 4 having adhesiveness disappears apparently. The colorless transparent layer 5 is formed using a thermosetting urethane-based, epoxy-based, acrylic-based, polyester-based, melamine-based resin, or an ink made of an ultraviolet-curable resin. The method for forming the colorless transparent layer 5 includes a general-purpose thick film printing method such as a screen printing method, and a coating method such as a roll coating method and a spray coating method. The thickness of the colorless and transparent layer 5 is larger than the depth of the concave portion of the hairline, and it is necessary to completely fill the concave portion of the hairline. If the colorless transparent layer 5 has substantially the same refractive index as the base sheet 2, irregular reflection does not occur at the boundaries of the hairline. In that case, the hairline eyes appear to disappear. However, if the thickness of the colorless and transparent layer 5 is small, irregularities of the hairline remain, and the hairline will be visible again by an adhesive anchor layer or the like which is coated thereafter. The adhesive anchor layer 4 is thinly coated so that the hairline can be seen after the adhesive anchor layer 4 is coated.

The picture printing layer 6 is formed on the adhesive anchor layer 4 or the colorless transparent layer 5. When the metal deposition layer 7 is formed first, the pattern printing layer 6 may be formed on the metal deposition layer 7. The picture print layer 6 formed on the portion where the colorless transparent layer 5 is not present has a hairline pattern or pattern. The picture printing layer 6 formed in the portion where the colorless transparent layer 5 is located
In the hairline, the pattern or pattern of the hairline is apparently lost. The pattern of the picture printing layer 6 includes a wood grain pattern, letters, symbols, numbers, and the like. Examples of the picture printing layer 6 include a pigment ink layer, a dye ink layer, a glitter ink layer, and an anchor layer (different from the adhesive anchor layer 4). The adhesive layer 10 may be formed on a pattern printing layer or a metal deposition layer. The picture printing layer 6 is made of ink in which various pigments and dyes are contained in a resin binder. The brilliant ink layer is made of an ink in which pearl powder, aluminum powder, and the like are mixed in a resin binder. The anchor layer is formed to improve the adhesion between the pigment ink layer, the dye ink layer, the glittering ink layer, the anchor layer, the adhesive layer, and the like. Adhesive layer 10
Is acrylic resin, urethane resin, polyester resin,
Examples include polyamide resins, ethylene butyl alcohol resins, ethylene vinyl acetate copolymers, and vinyl chloride / vinyl acetate copolymers.

The metal deposition layer 7 is formed on the adhesive anchor layer 4 or the colorless transparent layer 5. When the pattern printing layer 6 is formed first, the metal deposition layer 7 is
It may be formed on top. The metal vapor-deposited layer 7 formed in a portion where the colorless and transparent layer 5 is not present has hairlines. In the metal deposition layer 7 formed in the portion where the colorless and transparent layer 5 is present, the hairline is apparently lost. The metal deposition layer 7 is formed of a metal such as aluminum, chromium, silicon dioxide, and zinc sulfide by a vacuum deposition method or the like. The metal deposition layer 7 formed on the adhesive anchor layer 4 has a hairline pattern or pattern. Metal deposited layer 7 formed on colorless transparent layer 5
In hair, the eyes of the hairline disappear apparently.

The hairline insert film of the present invention may have a window A on which the metal deposition layer 7 and the picture printing layer 6 are not formed on the colorless transparent layer 5. In the window part A, the colorless transparent layer 5 is exposed, and the hairline is apparently lost in the state of the insert film.

The hairline insert film of the present invention may have a window B on which the metal deposition layer 7 and the pattern printing layer 6 are not formed on the adhesive anchor layer 4. In the window portion B, the adhesive anchor layer 4 formed on the unevenness of the hairline is exposed, and the hairline exists in a state of the insert film.

The hairline insert film of the present invention has an adhesive anchor layer 4 formed on the entire surface of the base sheet 2, a metal deposition layer 7 formed on a part of the anchor layer 4, and a metal deposition layer 7. Pattern printing layer 6 to cover part
Is formed, and an adhesive layer 10 is formed in register with the metal deposition layer 7 and the pattern printing layer 6 (see FIG. 3). In the case of FIG. 3, the adhesive anchor layer 4 has a function as an adhesive layer for adhering the base sheet 2 to the resin molded product 8, and also attaches the pattern printing layer 6 and the adhesive layer 10 to the base sheet 2. It will exhibit a function as an anchor layer for facilitating adhesion. Or,
In the hairline insert film of the present invention, an anchor layer 4 having an adhesive property is formed on a part of the base sheet 2, and a metal deposition layer 7 and a pattern printing layer 6 are formed only on the anchor layer 4.
Is formed, and an adhesive layer 10 is formed so as to cover the metal deposition layer 7 and the pattern printing layer 6 and to cover the base sheet 2 (see FIG. 4). In the case of FIG. 4, the anchor layer 4 having adhesiveness functions as an anchor layer for facilitating the adhesion of the pattern printing layer 6 and the metal deposition layer 7 to the base sheet 2. Alternatively, in the hairline eye-insert film of the present invention, an adhesive anchor layer 4 is formed on the entire surface of the base sheet 2, and the anchor layer 4
A metal deposition layer 7 and a pattern printing layer 6 are formed on the upper part, and an adhesive layer 10 is formed so as to cover the metal deposition layer 7 and the pattern printing layer 6 and to cover the adhesive anchor layer 4. (See FIG. 5). In the case of FIG. 5, the anchor layer 4 having an adhesive property functions as an anchor layer for facilitating the adhesion of the pattern printing layer 6, the metal deposition layer 7, and the adhesive layer 10 to the base sheet 2. .

According to the method for producing a hairline insert-molded article of the present invention, the adhesive anchor layer 4 having a thickness smaller than the depth of the hairline recess is formed on the transparent base sheet 2 on which the hairline is formed. The metallized layer 7 or / and the pattern printing layer 6 are successively formed, and the hairlined insert sheet is placed in the injection mold so that the base sheet 2 and the mold surface are in contact with each other, and after closing the mold. By injecting the molding resin into the mold and solidifying the resin, the hairline-shaped insert film 1 is formed on the resin molding 8.
Is to be adhered.

First, the hairline insert film 1 is placed in an injection mold composed of a movable mold and a fixed mold. The base sheet 2 is arranged so that the side of the base sheet 2 is in contact with the surface of one of the movable mold and the fixed mold. Or 2
Two hairline insert films may be prepared and arranged so that the base sheet 2 side of one insert film contacts the movable mold and the base sheet 2 side of the other insert film contacts the fixed mold. After the placement, the hairline insert film 1 is heated and softened to be easily deformed, and the hairline insert film 1 is evacuated from the vacuum suction holes provided on the inner surface of the movable mold cavity, so that the hairline insert film 1 is moved inside the movable mold cavity. May be adhered to.

Next, the mold for injection molding is closed, and the molding resin is injected and filled into the cavity through an injection port provided in the fixed mold. Pattern printing layer 6 of hairline eye insert film 1
And the molding resin come into contact. The molding resin is colorless and transparent,
There are colored transparent ones and colored opaque ones. When the molding resin is colorless and transparent or colored and transparent, if the refractive index of the molding resin is set to be substantially the same as the refractive index of the base sheet 2 or the adhesive anchor layer 4, the hairline of the base sheet 2 will be apparently seen. Can be eliminated. Colorless and transparent layer 5
In the case of using the hairline insert film 1 having the window A in which is exposed, the molding resin directly contacts the pattern printing layer 6 and the colorless transparent layer 5. When the hairline insert film 1 having the window portion B where the adhesive anchor layer 4 is exposed is used, the molding resin directly contacts the pattern printing layer 6 and the anchor layer 4, and the adhesive anchor layer 4 ( The hairline in the window portion B) disappears apparently.

Next, the injection resin filled in the cavity is solidified to form the resin molded product 8, and at the same time, the hairline insert film 1 is adhered to the surface thereof. After cooling and solidifying the resin molded product 8 and bonding the hairline insert film 1 to the resin molded product 8, the mold for injection molding is opened and the insert molded product to which the hairline insert film 1 is adhered is taken out. In the insert molded product obtained when using the hairline insert film 1 in which the colorless transparent layer 5 is exposed, the window portion A is a transparent window portion without hairline. Hairline eye insert film 1 with exposed adhesive anchor layer 4
The window part B of the insert molded product obtained by using the following is as follows. When all the layers of the base sheet 2, the adhesive anchor layer 4, and the molding resin have the same refractive index, a transparent window portion having no hairline is formed. When all the layers of the base sheet 2, the adhesive anchor layer 4, and the molding resin do not have the same refractive index, a transparent window having a hairline is formed.

The obtained hairline insert-molded product includes a hairline eye insert-molded product in which a metal-deposited part or a pattern printed part having a hairline is combined with a metal-deposited part or a pattern printed part without a hairline. Alternatively, there is a hairline insert-molded product in which a metal deposition portion or a pattern printing portion having a hairline is combined with a transparent window portion having no hairline. Alternatively, there is a hairline-shaped insert molded product in which a metal-deposited part or a pattern printed part with a hairline, a metal-deposited part or a pattern printed part without a hairline, and a transparent window part without a hairline are combined.

In the hairline-shaped insert molded product obtained by the production method of the present invention, an adhesive anchor layer 4 is formed on the entire surface of the base sheet 2, and a metal deposition layer 7 is formed on a part of the anchor layer 4. The pattern printing layer 6 is formed so as to cover a part of the metal deposition layer 7, and the hairline eye insert film in which the adhesive layer 10 is formed in register with the metal deposition layer 7 and the pattern printing layer 6 is used. There is a hairline eye insert molded product obtained by the above method (see FIG. 3). Alternatively, the anchor layer 4 having adhesiveness is formed on a part of the base sheet 2, and the metal deposition layer 7 and the pattern printing layer 6 are formed only on the anchor layer 4. There is a hairline insert product obtained using a hairline insert film having an adhesive layer 10 formed so as to cover the base sheet 2 (see FIG. 4). Alternatively, an adhesive anchor layer 4 is formed on the entire surface of the base sheet 2, a metal deposition layer 7 and a pattern printing layer 6 are formed on a part of the anchor layer 4, and the metal deposition layer 7 and the pattern printing layer 6 are formed.
There is a hairline insert product obtained using a hairline insert film in which an adhesive layer 10 is formed so as to cover the anchor layer 4 having an adhesive property (see FIG. 5).

[0029]

Since the hairline insert film of the present invention has an adhesive anchor layer having a thickness smaller than the depth of the hairline concave portion, a pattern printing layer or a metal deposition layer is formed on the hairline. However, the hairline does not seem to disappear, and the adhesive strength between the base sheet and the pattern printing layer or the metal deposition layer is strong. Further, when the hairline insert film with the adhesive anchor layer exposed is used, the hairline at the exposed portion of the adhesive anchor layer can be apparently disappeared by molding resin to form a transparent window. Further, the adhesive force between the base sheet and the molding resin can be increased by the adhesive anchor layer. When the colorless transparent layer is partially formed on the hairline, the hairline insert film of the present invention can partially eliminate the hairline. In all the layers sequentially formed on the colorless and transparent layer, the hairline pattern appears to disappear. All layers subsequently formed on the adhesive anchor layer without the colorless and transparent layer will still have the hairline pattern. As described above, the hair lines of the insert film and the insert molded product can be freely patterned.

[0030]

EXAMPLE A polyester film having a thickness of 125 μm was used as a base sheet, hair lines having a recess depth of 10.0 μm were formed by sandpaper having a surface roughness of 10 μm, and a thermosetting urethane resin was formed on the unevenness of the hair lines. A 0.5 μm-thick adhesive anchor layer is formed by gravure printing using, and a 12.0 μm-thick colorless transparent layer is formed thereon by gravure printing using a thermosetting urethane resin. A pattern printing layer consisting of 60% by weight of a thermosetting acrylic resin as a resin binder and 40% by weight of heavy calcium carbonate as a pigment is formed thereon, and a film thickness of 400 is formed thereon by a vacuum evaporation method using aluminum.
A vacuum deposited layer was formed, and an adhesive layer having a thickness of 2.5 μm was obtained thereon by a gravure printing method using polyvinyl chloride.

The hairline insert film is placed in the injection mold so that the base sheet and the mold surface are in contact with each other, and after closing the mold, the molding resin temperature is 220 to 250 ° C.
Under the condition of a mold temperature of 40 to 60 ° C., a colorless transparent acrylonitrile butadiene polystyrene copolymer resin is injected into a mold as a molding resin, and the molding resin is solidified. Was.

[0032]

According to the present invention, since the present invention has the above-mentioned structure and operation, a hair-lined picture printing layer, a hair-lined metal deposited layer, a hair-lined picture printed layer, a hair-lined metal deposited layer, Arbitrary combinations of the transparent windows can be made, and the decorated hairline can be freely decorated on the molded product, so that the design is improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing one embodiment of a hairline insert film of the present invention.

FIG. 2 is a cross-sectional view showing one example of a hairline insert molding obtained by the method for producing a hairline insert molding of the present invention.

FIG. 3 is a cross-sectional view showing an example of a hairline-shaped insert molded product obtained by the method of manufacturing a hairline-shaped insert molded product of the present invention.

FIG. 4 is a cross-sectional view illustrating an example of a hairline insert molded product obtained by the method of manufacturing a hairline insert molded product according to the present invention.

FIG. 5 is a cross-sectional view showing an example of a hairline insert molded product obtained by the method for producing a hairline insert molded product of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hairline insert film 2 Base sheet 3 Hairline unevenness 4 Adhesive anchor layer 5 Colorless transparent layer 6 Picture printing layer 7 Metal deposition layer 8 Resin molding 9 Hairline insertion molding 10 Adhesive layer

Claims (7)

[Claims] 1. An adhesive anchor layer, a metal deposition layer or a picture printing layer is sequentially formed on a transparent base sheet on which a hairline is formed, and the adhesive anchor layer is formed in a concave portion of the hairline. A hairline insert film characterized in that the film thickness is smaller than the depth. 2. The hairline insert film according to claim 1, wherein a colorless transparent layer having a thickness larger than the depth of the hairline concave portion is formed on a part of the adhesive anchor layer. 3. The hairline insert film according to claim 2, wherein the colorless transparent layer has a window on which the metal deposition layer and the pattern printing layer are not formed. 4. The hairline insert film according to claim 1, further comprising a window on which the metal deposition layer and the pattern printing layer are not formed on the adhesive anchor layer. 5. The hairline insert film according to claim 1, which is arranged in an injection mold so that the base sheet and the mold surface are in contact with each other, and after closing the mold, the molding resin is molded. A method for producing a hairline insert product, wherein the hairline insert film is adhered to the resin molded product by injecting the resin into the inside and solidifying the molding resin. 6. The insert film according to claim 4, wherein the insert sheet is arranged in an injection mold so that the base sheet and the mold surface are in contact with each other, and after closing the mold, the molding resin is placed in the mold. The hairline eye is characterized in that the hairline eye insert film is bonded to the resin molded product by injecting the molding resin into contact with the adhesive anchor layer of the window portion of the hairline eye insert film and solidifying the molding resin. Manufacturing method for insert molded products. 7. A hairline insert molded product in which a resin molded product and a hairline insert film are bonded to each other, wherein a metallized portion or a pattern printed portion having a hairline, a metal deposited portion or a pattern printed portion without a hairline is provided. A hairline eye insert molded product characterized by combining transparent windows without hairlines.