JPH0534904Y2 - - Google Patents

Description

[Detailed explanation of the idea]

[0001]

[Industrial Application Field] This invention relates to a glitter decorative body made of plastic.

[0002]

[Prior Art] Conventionally, as decorations such as automobile emblems, a concave surface expressing letters and figures is formed on the back side of a transparent plastic plate, and then
Vacuum deposition is performed with masking, or vacuum deposition is performed on the entire surface without masking, and the deposited film adhering to areas other than the recessed areas where the above-mentioned letters and designs are displayed is removed, and a hot stamp or painting of a different color is applied on top of them. There are products that are manufactured using a method that allows characters and designs to be seen through the transparent plastic board. On the other hand, as a technique to obtain a glittering decorative body with a profound feeling, a metal transfer foil having a chromium metal vapor deposited layer is placed in a mold to mold a plastic product, and at the same time, the chromium metal vapor deposited layer is attached to the product. , the patent application previously filed by the applicant
No. 61-66538 (Japanese Unexamined Patent Publication No. 62-221533) entitled "Glitter Decorative Body for Plastic Products by Simultaneous Molding and Method for Producing the Same", this invention improves that and allows the above-mentioned letters, designs, etc. to be seen through. It is used as a decoration.

【0003】

[Problem to be solved by the invention] This invention creates a new texture by printing letters, designs, etc. on the surface of the chromium metal vapor deposited layer, and by injection molding a transparent resin material on that surface. The purpose of this invention is to obtain decorations for automobile emblems, panel garnishes, instrument panels, etc.

[0004]

[Means for Solving the Problems] In a metal transfer foil in which a thermoplastic synthetic resin release layer, a thermoplastic synthetic resin protective layer, a chromium metal vapor deposited layer, and a heat-sensitive adhesive layer are formed in this order on a polyethylene terephthalate film, the chromium A transfer foil with letters, designs, etc. printed on a metal vapor deposited layer or a heat-sensitive adhesive layer is placed in a mold, and a transparent plastic resin material is injection molded on the side of the chromium metal vapor deposited layer. In the glitter decoration, chromium metal vapor deposited layer, or heat-sensitive adhesive layer, a metal transfer foil is used in which parts representing letters, designs, etc. are left as metallic luster parts, and the other parts are printed and displayed as printed coating parts. In the bright decorative body, chromium metal vapor deposited layer or heat-sensitive adhesive layer as described above, which is characterized by characters,
The shiny decorative body, the metallic luster part or the printed coating part of the chromium metal vapor deposited layer or the heat-sensitive adhesive layer as described above, characterized in that a metallic transfer foil is used in which a part representing a design or the like is printed and displayed as a printed coating part. The glitter decorative body described above is characterized in that the portion corresponding to the above is formed in a concave or convex shape.

[0005]

[Function] Printed chrome metal transfer foil is pressed and heat-sealed at the same time as plastic molding to obtain a glittering decorative body in which characters and patterns on the glittering surface of chrome metal are made transparent and visible. Can be done.

[0006]

[Example] Fig. 1 shows an enlarged cross section of the metal transfer foil A of this invention, in which 1 is a polyethylene terephthalate film, 2 is a thermoplastic synthetic resin release layer, and 3 is a thermosetting synthetic resin protection layer. The layers 4 are a chromium metal vapor deposited layer, and 5 is a heat-sensitive adhesive layer, which are formed into an integral thin film. Here, the polyethylene terephthalate film 1 is used as a base film, and its thickness is suitably 35 to 50 microns. Next, the thermoplastic synthetic resin release layer 2 is used to separate the polyethylene terephthalate film 1 and the thermosetting synthetic resin protective layer 3,
For example, a synthetic resin material such as acrylic resin is used. A suitable type of foil is one with a film thickness of about 0.5 microns and easier release than normal hot stamp foil. The thermosetting synthetic resin protective layer 3 exists to protect a material or a chromium metal deposited layer 4 formed by vacuum deposition, sputtering, or the like, which will be described later. By using a fluororesin-based thermosetting synthetic resin protective layer 3, durability is improved and the film thickness is maximized.
Even if the thickness is around 10 microns, no particular problem will occur in terms of workability, so even without an overcoat clear, it will be sufficiently durable as an exterior, and so-called foil tanning will not occur easily.

[0007] The chromium metal vapor deposition layer 4 uses pure chromium metal in order to provide a profound metallic feel, and is preferably formed by vacuum vapor deposition or sputtering. The appropriate film thickness is 200 to 400 angstroms; if it is thinner than this, good metallic luster cannot be obtained, and if it is thicker than this, cracks are likely to occur. The heat-sensitive adhesive layer 5 is used to adhere the chromium metal vapor deposited layer 4 to the molding material, and is made of, for example, a synthetic resin material such as acrylic resin. The film thickness is 2 to 3 microns, and a material that is a lower temperature adhesion type (approximately 150 to 170 degrees Celsius) is suitable than the adhesive layer resin of ordinary metal foil for hot stamping. On this chromium metal vapor deposited layer 4, a metallic glossy part e representing characters or designs is left in advance by silk printing or the like at a position corresponding to the uneven shape of the mold, which will be described later, and a printed coating part f is left around it. [Printing ink adhesion area] is provided. On the contrary, the characters and designs may be printed and displayed as the areas to which printing ink is attached, and the other areas may be displayed as metallic luster areas. In addition, in order to provide such a printed display, it is also possible to provide it from above the heat-sensitive adhesive layer 5, as shown by the two-dot chain line in FIG. Then, as shown in FIG. 2, on the female die C side of the mold, a corresponding convex part b is provided on the male die B so that a concave part a on which letters, designs, etc. are formed appears on the product F. Further, in order to form a convex part b' in the product F, a concave part a' may be formed in the male die B. This metal transfer foil A is placed between the male mold B and the female mold C shown in FIG. 2, and a transparent synthetic resin material E is injected onto the chromium metal vapor deposited layer 4 side through a nozzle D in contact with the female mold C.

[0008] At this time, the metal transfer foil A adhesively transfers the chromium metal vapor deposited layer 4 onto the product F surface using the heat-sensitive adhesive layer 5. In other words, product F is molded in the cavities in male mold B and female mold C, and at the same time this product F
A chromium metal vapor deposited layer 4 is heat-sealed on one surface of the substrate.
By releasing this from the mold, a product F is obtained in which the concave and convex portions of the letters and designs are three-dimensionally treated with metallic luster. The chromium metal vapor deposited layer 4 has good adhesion to three-dimensional surface irregularities such as letters and designs formed on the mold, side walls, etc., and can impart a shiny surface with a solid feel to them. FIG. 3 shows an example of a product F based on this invention. When looking through the transparent plate c, the letters d and the design d', which are concave in the direction toward the front, are displayed as a chrome metallic glossy part e. The part indicated by f is the printed and painted part of a different color.

[0009]

[Effect of the invention] The luminous decorative body of this invention can be used as a decorative body for automobile emblems, panel garnishes, instrument panels, etc., and can be used to display letters, designs, etc. through the entire surface, and is made of solid chrome metal. The result is a novel and useful product with a shiny surface that is free from deformation and warping, which is seen in hot stamping products.
The product also has stable dimensions.

[Brief explanation of the drawing]

FIG. 1 is a partially enlarged sectional view of a metal transfer foil used in this invention.

FIG. 2 is a cross-sectional view showing a state of injection molding to produce a product according to the invention.

FIG. 3 is a front view of the product of this invention.

[Explanation of symbols]

A...Metal transfer foil 1...Polyethylene terephthalate film 2...Thermoplastic synthetic resin release layer 3...Thermoplastic synthetic resin protective layer 4...Chromium metal vapor deposited layer 5...Heat-sensitive adhesive layer B...male type C...Female type a... Concavity a′……concavity b...Protrusion b′……Protrusion F...Product c...Transparent plate d...character d′……Design e...Chrome metal shiny part f...Printed painting part

Claims (4)

[Scope of utility model registration request] 1. A metal transfer foil in which a thermoplastic synthetic resin release layer, a thermoplastic synthetic resin protective layer, a chromium metal vapor deposited layer, and a heat-sensitive adhesive layer are formed in this order on a polyethylene terephthalate film, wherein the chromium metal vapor deposited layer or A glitter coating characterized in that a transfer foil with letters, designs, etc. printed on a heat-sensitive adhesive layer is placed in a mold, and a transparent plastic resin material is injection molded on the side of the chromium metal vapor deposited layer. Decorative body. [Claim 2] A metal transfer foil is used in which the chromium metal vapor deposited layer or the heat-sensitive adhesive layer has a metallic luster by leaving a part representing letters, designs, etc., and the other part is a printed coating part. The glitter decorative body according to claim 1. 3. The glitter coating according to claim 1, wherein a metal transfer foil is used in which a portion representing characters, designs, etc. is printed and displayed as a printed coating portion in the chromium metal vapor deposited layer or the heat-sensitive adhesive layer. Decorative body. 4. The method according to claim 1, 2, or 3, wherein the portion of the chromium metal vapor deposited layer or the heat-sensitive adhesive layer that matches the metallic luster portion or the printed coating portion is formed in a concave or convex shape. Bright decorative body.