JPS61153694A - Self-reflecting decoration body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a retroreflective decorative body using a new high-frequency processable retroreflective sheet.

[Prior art and problems to be solved by the invention] Conventionally, it has been known that retroreflective sheets are applied to road signs, license plates, stickers, etc.
All of these are planar. Since conventional retroreflective sheets do not have high-frequency processability, that is, high-frequency fusing and weldability, it has been almost impossible to attach them to accessories, for example. Therefore, conventionally,
To create a decorative body using a retroreflective sheet, the surface of the retroreflective sheet is printed to enhance the decorative effect, but the decorative effect of such colors is only two-dimensional; It is monotonous and lacks variety, making it unsatisfactory for decorative objects such as accessories.

However, the present inventors have discovered a completely new retroreflective sheet that has high-frequency processability that conventional retroreflective sheets do not have, and when this is used as an outer cover and is high-frequency cut and welded to a decorative base material, it has an excellent accessory effect. They discovered a new fact that a three-dimensional decorative object can be obtained, and completed the present invention.

[Means for Solving the Problems] That is, the present invention stacks a resin foam on a decorative base material, and further overlays a first flexible vinyl chloride film and a first soft vinyl chloride film.
The adhesive layer, the resin layer, the focal resin layer, the metal heat layer, the second adhesive layer, and the second soft vinyl chloride film are sequentially laminated. The spheres are buried and arranged so that a part thereof is exposed on the focusing resin layer side, and the focusing resin layer forms a hemisphere in which a portion corresponding to the exposed part of the glass microsphere covers the exposed part. The gold WA vapor deposited layer is a high frequency processable retroreflective sheet formed so that the portion corresponding to the hemispherical portion of the focal resin layer constitutes a hemispherical mirror surface covering the hemispherical portion. The present invention relates to a retroreflective decorative body having a three-dimensional outer skin, characterized in that a second soft vinyl chloride film is stacked on the resin foam side and then formed by high-frequency fusing and welding.

[Example] First, the high frequency processable retroreflective sheet used in the present invention will be explained with reference to the drawings. FIG. 1 is a schematic sectional view showing a preferred embodiment of the retroreflective sheet used in the present invention. In FIG. 1, (1) is the first soft vinyl chloride film, (2
is the first adhesive layer, (3) is the resin layer, (4) is the glass microsphere, [51 is the focal resin layer, (6) is the metal vapor deposited layer, ('7
) is the second adhesive layer, and (8) is the second soft vinyl chloride film. This retroreflective sheet exhibits retroreflection when viewed from the first soft vinyl chloride film (1) side.

The first soft vinyl chloride film (1) and the second soft vinyl chloride film (8) are preferably those that can be easily cut by high frequency welding and have a soft feel on the surface. From this point of view, 100 parts of polyvinyl chloride (parts by weight,
When 20 to 60 parts of plasticizer was added to (the same applies below), externally plasticized polyvinyl chloride and internally plasticized vinyl chloride-vinyl acetate copolymer made by copolymerizing 100 parts of vinyl chloride and 20 to 60 parts of vinyl acetate were obtained. A soft vinyl chloride film obtained from polyvinyl chloride is particularly preferably used. Although the thickness of the soft vinyl chloride film is not particularly limited, it is usually preferably used that has a thickness of about 50 to 800 microns.

Desired printing or embossing may be applied to the front or back surface of the first soft vinyl chloride film (1), thereby further enhancing the decorative effect.

As the adhesive for forming the first adhesive layer (2) and the second adhesive layer ('7), it is preferable to use an adhesive that has good fusing properties during high-frequency processing. Examples of such adhesives include polyamide-based, polyvinyl chloride-based, polyacrylic ester-based, and urethane resin-based adhesives. The adhesive layer is usually provided to a thickness of about 2 to 5 microns.

The main purpose of the resin layer (3) is to hold and fix the glass microspheres (4), and the glass microspheres (4) must not move due to heat applied during high frequency processing. From this point of view, it is preferable to use a thermosetting resin.

Examples of thermosetting resins used include alkyd resins,
Examples include urea resins, melamine resins, urethane resins, epoxy resins, thermosetting acrylic resins, and these may be used alone or in combination.

Additionally, a thermoplastic resin may be appropriately blended with the thermosetting vAUa within a range that does not impair the above purpose. The thickness of the resin layer (3) is determined by how much of the glass microspheres (4) are exposed from the resin layer (3). In order to obtain excellent retroreflectivity, the glass microspheres (4) should be placed at about 173 to 273 1,
In particular, it is preferable to expose about 172 mm, so that the resin layer (3) has a diameter of 173 mm to 172 mm, which is the diameter of the glass microsphere (4).
It is preferable to provide a thickness of about 273 mm, particularly about 172 mm. Resin # (31 may be colored with a dye or a transparent organic pigment, and in such a case, the metal vapor deposited layer (6)
It is not limited to metallic luster, but can be used to change retroreflected light of various colors.

Glass microspheres (4) having a refractive index in the range of 1°9 to 2.4 are preferably used for the purpose of providing excellent retroreflectivity. If the glass microsphere (4) is too small, it will be difficult to form a focal resin layer of the same thickness along the spherical surface, and if it is too large, the focal resin layer will need to be made thicker. It becomes difficult to form them to the same thickness, and in any case, it is difficult to obtain wide-angle retroreflectivity. From this point of view, the size of the glass microspheres (4) is usually selected from a range of about 30 to 100 μm in average spherical diameter. In order to obtain uniform retroreflection, it is preferable to arrange the glass microspheres (4) as densely as possible; however, if spotty retroreflection is desired, they may be arranged roughly as appropriate.

The focusing resin layer (5) is formed so that a portion corresponding to the exposed portion of the terminal microsphere constitutes a hemisphere covering the exposed portion. Here, the term "hemisphere" includes not only a complete hemisphere but also a sphere ranging from 173 to 273 degrees.

By configuring the focusing resin II (51) in this way, the part of the next metal vapor deposited layer (6) corresponding to the glass microspheres forms a hemispherical mirror surface. It becomes possible to focus not only the incident rays but also the incident rays from any angle, which results in excellent wide-angle retroreflection ability.The preferred thickness of the focusing resin 11 (5) is glass microscopic. Ball (4
) and the refractive index of the resin surrounding the glass microspheres, but are usually selected from a range of 5 to 10μ.

As the resin constituting the focal resin II (51), the resin layer (3
Similar resins can be used to achieve the same purpose as in ), and may also be colored. In addition, when resin mainly composed of thermosetting resin is used for the resin layer (3) and the focal resin ffJ (5), the metal vapor deposition m1 (6) of the glass microspheres that come into contact with the fused part during high-frequency fusing is applied before cutting. Therefore, despite the presence of the metal vapor deposited layer (6), no sparks are generated and high frequency workability is achieved.

The metal vapor deposited layer (6) is formed so that a portion corresponding to the hemispherical portion of the focusing resin layer (5) forms a hemispherical mirror surface covering the hemispherical portion. The metal constituting the metal evaporation layer 1t(6) is not limited to, but includes, for example, aluminum, chromium, nickel, chromium-nickel alloy, etc. Usually, aluminum is preferably used for the metal evaporation layer.Thickness of the metal evaporation layer The thickness is preferably about 0.05 to 0.1μ.If the thickness is 0.05μ, the reflective ability will be poor and excellent retroreflectivity will be lost, and if it is thicker than 0.1μ, the reflective ability will not improve. Therefore, a material thicker than 0.1 μm is economically disadvantageous.

The high-frequency processable retroreflective sheet used in the present invention has both sides covered with a soft vinyl chloride film that is easy to high-frequency cut and weld. Since the edges are coated with a beautiful finish, each layer is not exposed on the edges, so there is no risk of each layer peeling off from the fused area. Since there is a soft vinyl chloride film on the material side, high frequency welding can be easily performed. In addition, since the surface is coated with a high-quality vinyl chloride film, it has excellent robustness, maintains its retroreflective ability for a long period of time, and has an excellent feel when used as an accessory. Furthermore, since the high-frequency processable retroreflective sheet used in the present invention has the above-mentioned configuration, it is an excellently flexible retroreflective sheet, and furthermore, since it has the above-mentioned specific retroreflective structure, it has excellent retroreflective ability. It is intended to be presented.

Various methods can be used to manufacture the high-frequency processable retroreflective sheet used in the present invention by changing the lamination order of each layer. The method shown in FIG. 2 is particularly preferably employed.

In FIG. 2, (9) is a base film.

As the base film, for example, a polyester film having a thickness of about 25 to 75 μm is preferably used. Apply the resin solution on the base film (9) and apply the resin I.
T! Form +31. Later, the base film (9) is peeled off from the resin layer (3), but if the peelability is poor, use a resin with poor adhesiveness to the base film (9), such as polyvinyl chloride or cellulose acetate, in advance. A coating layer is provided, and a tree 11111?
ff [31 may be formed. While 1 m of resin (3) is still soft, glass microspheres (4) are sprinkled over the entire surface. The glass microspheres (4) sink into the resin 1 m (3) due to their own weight. The degree of exposure of the glass microspheres (4) from the resin layer (3) can be adjusted by appropriately selecting the thickness of the resin layer (3) and the diameter of the glass microspheres (4). Next, the glass microspheres (4) are fixed to the resin layer (3) by heating and drying the resin layer (3). A resin solution is applied onto the resin layer (3) where the glass microspheres (4) are exposed and dried to form a focal resin layer (5). Although the thickness of the focal resin layer (5) is adjusted by adjusting the amount of resin solution applied, it is necessary to prevent at least the exposed portions of the glass microspheres (4) from being buried. If the glass microspheres (4) are completely buried, the metal vapor deposited layer provided next becomes flat and cannot form a hemispherical mirror surface, and the excellent retroreflectivity cannot be restored. Thus, the focal resin layer (5) whose portion corresponding to the exposed portion of the glass microsphere (4) constitutes a hemisphere covering the exposed portion
It can be grown.

Next, a metal is deposited on the focal resin 1i1 [51 to form a metal deposited layer (6). A portion of the metal vapor deposited layer (6) corresponding to the hemispherical portion of the focal resin layer (5) constitutes a hemispherical mirror surface. The metal is deposited by a conventional vacuum deposition method, sputtering method, ion blating method, or the like. An adhesive is applied on the metal vapor deposited layer (6) to form a second adhesive layer (sword), and a second soft vinyl chloride resin film (a) is laminated thereon.The thus obtained laminate is used to form a base. The film (9) is peeled off, a first adhesive 11 (2) is formed on the exposed resin layer (3), and then the first soft vinyl chloride film (1) is laminated thereon to improve high frequency processability. You can get a retroreflective sheet.

The retroreflective decorative object of the present invention is a three-dimensional retroreflective decorative object that utilizes the excellent retroreflective ability, excellent high frequency processability, and excellent feel of the high-frequency processable retroreflective sheet, and uses this as an outer skin. .

FIG. 3 is a schematic cross-sectional view showing one embodiment of the decorative body of the present invention. In Fig. 3, (Ro) is the high-frequency processable retroreflective sheet, 01) is the resin foam, and (12) is the decorative base material.The resin foam Ou is high-frequency melt cut,
Any material that can be welded and easily compressed can be used, examples of which include polyurethane foam and polyvinyl chloride foam. As the decorative base material 02), for example, textiles, leather, velvet, felt, resin sheets, etc. can be used as appropriate depending on the purpose.

To produce such a decoration, a resin foam 0υ is layered on top of the decorative base material Oz, and then a second soft vinyl chloride film (8) with a retroreflective sheet color is placed on the side of the resin foam 01). They may be stacked like this, and then molded using a normal high-frequency welder. For example, a mold having an inner shape corresponding to the outer shape of the retroreflective sheet color shown in FIG. The material) and the resin foam at are melt-cut and welded to obtain a three-dimensional decorative body having the retroreflective sheet η as the outer skin, as shown in FIG. The thus obtained decorative body of the present invention is used as an accessory, for example, by hanging it on a hat, clothing, bag, etc., or by sewing it on.

This is not only an accessory, but also helps prevent traffic accidents at night. The decorative body of the present invention can be attached to any desired location by applying a pressure-sensitive or heat-sensitive adhesive to the back side of the decorative base material 02) and, if necessary, overlaying release paper thereon. Good too.

Next, the present invention will be explained with reference to Examples.

Example After forming a coating layer of cellulose acetate with a thickness of 0.5μ on a polyethylene terephthalate film with a thickness of 25μ, 3 parts of a butylated melamine resin and 1 part of a mustard oil-modified alkyd resin were mixed in a toluene-butyl alcohol mixed solvent ( The thickness of the solution after drying is 8μ.
It was applied so that After leaving it for a while to volatilize the solvent, glass microspheres with an average sphere diameter of 50 μm and a refractive index of 2.3 were sprinkled over the entire surface. The glass microsphere sank by about half its diameter due to its own weight. The resin layer was then dried and solidified by heating. The same resin solution as above was applied onto the exposed resin layer of the glass microspheres so that the thickness after drying was 10 μm, and dried to form a focal resin layer. Aluminum was deposited on the focal resin layer by vacuum deposition to a thickness of 0.05 μm to form an aluminum deposited layer. On top of that, a urethane resin adhesive is applied to form an adhesive layer with a thickness of 3μ, and on top of that, a soft vinyl chloride film with a thickness of 200μ (formed from a mixture of 40 parts of dioctyl phthalate to 100 parts of polyvinyl chloride) ) was attached. The polyethylene terephthalate film was peeled off from the thus obtained laminate, an adhesive layer with a thickness of 3 μm was formed on the exposed resin layer using the same adhesive as above, and the same soft vinyl chloride film as above was laminated thereon. Ta.

The high-frequency processable retroreflective sheet thus obtained exhibited excellent retroreflectivity and had a soft surface.

Next, a sheet of polyurethane foam is layered on top of the felt, and then the high-frequency processable retroreflective sheet is placed on top of the felt, and an inner shape corresponding to the external shape of the high-frequency processable retroreflective sheet (incorporated) shown in FIG. Stack molds with
A frequency voltage of 7 Hz was applied. The high-frequency processable retroreflective sheet and the polyurethane foam were thus cut and welded to obtain a decorative body having the three-dimensional shape shown in FIG. The resulting decorative body was suitable as an accessory due to its three-dimensional shape and decorative effect.

[Effects of the invention] A retroreflective sheet with excellent high-frequency processability, retroreflectivity, and feel is layered on top of a resin foam placed on a decorative base material, then high-frequency fused and welded, resulting in improved retroreflectivity. The outer skin, which has an excellent feel, is replaced with a three-dimensional retroreflective decoration.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view showing a preferred embodiment of the high-frequency processable retroreflective sheet used in the present invention, and FIG. 2 is a schematic sectional view showing one embodiment of the laminate obtained during the manufacturing process of the retroreflective sheet. FIG. 3 is a schematic sectional view showing one embodiment of the decorative body of the present invention. (Drawing codes) (1): First soft vinyl chloride film ('2J: First
Adhesive layer (3): Resin layer (4): Glass microspheres (5): Focus resin layer (6): Metal vaporized 11 layer (7): Second adhesive layer (8): Second soft Vinyl chloride film (9): Base film (lot: High frequency processable retroreflective sheet aυ: Resin foam 0: Decorative base material

Claims (1)

[Claims] 1 Layer the resin foam on the decorative base material, and further layer the first soft vinyl chloride film, the first adhesive layer, the resin layer, the focal resin layer, the metal vapor deposited layer, the second adhesive layer, and the second adhesive layer. It consists of a structure in which soft vinyl chloride films are sequentially laminated, and glass microspheres are buried and arranged in the resin layer so that a part thereof is exposed on the focusing resin layer side, and the focusing resin layer is A portion of the glass microsphere corresponding to the exposed portion is formed to constitute a hemisphere covering the exposed portion,
The metal vapor deposited layer includes a high frequency processable retroreflective sheet formed so that a portion corresponding to the hemispherical portion of the focusing resin layer constitutes a hemispherical mirror surface covering the hemispherical portion, and a second soft vinyl chloride film. Stack it so that it is on the side of the resin foam,
A retroreflective decorative body with a three-dimensional outer skin, which is formed by high-frequency fusing and welding.