JP4261957B2 - Decorative sheet, decorative sheet with convex lens and simultaneous injection molding - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a decorative sheet with a convex lens composed of an assembly of cells having a constant section size having excellent design properties, and is particularly widely used in automobile interior materials, etc., and has been studied in home appliances, acoustic products, and communication devices. The present invention relates to a decorative sheet with a convex lens that can express a carbon cloth-like design.
[0002]
[Prior art]
Conventionally, a carbon cloth is a plain weave made of knitted carbon fibers in a band shape with warp and weft. As the line-of-sight direction or illumination direction is changed, there is a feature that a position that appears brightly lit and a position that appears darkly move sequentially. That is, it has a unique design feeling that the pattern changes depending on the line-of-sight direction or the illumination direction.
[0003]
However, since carbon cloth has a low productivity and is very expensive, there is a market need to express this by replacing it with a printed material that can be mass-produced at low cost. Japanese Patent Application Laid-Open No. H10-228707 has attempted to realize this.
[0004]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 10-044186
[Problems to be solved by the invention]
However, even if the carbon cloth was photographed and subjected to a printing plate process and expressed as a substitute with a printed matter, the unique design feeling of the carbon cloth could not be exhibited by simply printing the pattern. Therefore, the conventional printed matter has poor design that can be regarded as fake even by an amateur. Therefore, the inventor invented the decorative sheet, the decorative sheet with a convex lens and the manufacturing method thereof, the simultaneous injection-molded decorative product and the manufacturing method thereof, and has a design feeling similar to a carbon cloth by a convex lens-shaped protrusion. Obtained.
[0006]
[Means for Solving the Problems]
That is, the present invention provides a decorative object in which a plurality of convex lens-shaped protrusions are provided on the surface of a transparent base material sheet, and a pattern decoration pattern composed of an assembly of cells of a fixed section size is formed on the back surface of the base material sheet. In the pattern decoration pattern, cells having a fixed section size are composed of a cell a and a cell b, each of which has a plurality of straight lines or curved patterns orthogonal to each other, and the cells a and b are continuously formed adjacent to each other. X <z <y, where x is the pitch interval of the micropattern of the cell a, y is the pitch interval of the micropattern of the cell b, and z is the pitch interval of the convex lens-like projections on the surface. It is a decorative sheet with a convex lens.
[0008]
In the present invention, a pattern decoration pattern composed of an assembly of cells having a fixed section size is formed on the surface of a transparent base sheet, and a plurality of straight lines or curves in which the cells of the fixed section size of the pattern decoration pattern are orthogonal to each other. The cell a and the cell b are formed of patterns, and the cell a and the cell b are continuously formed adjacent to each other, and the pitch interval of a plurality of straight lines or curved patterns constituting the cell a is x and the cell b is formed. A decorative sheet having a relationship of x <y, where y is a pitch interval of a plurality of straight lines or curved patterns to be provided, a mold A and a plurality of concave portions for forming convex lenses having a pitch interval of z are provided on the surface. The molded resin is set between the molded B mold and injected into the molding space formed by the decorative sheet and the A mold from the gate provided on the inner surface of the A mold. Solidify The injection molding is characterized in that the decorative sheet and the molding resin are integrated to obtain an injection molding simultaneous decorative product having a convex lens-like projection formed on the surface, wherein x <z <y. It is a manufacturing method of simultaneous decorations.
[0009]
Further, the present invention is an injection-molded simultaneous decorating product in which a convex lens-like projection is formed by a convex lens on a surface where a decorative sheet with a convex lens and a molding resin are integrated, and the decorative sheet with a convex lens is transparent. A decorative sheet in which a plurality of convex lens-shaped protrusions are provided on the surface of a base sheet, and a pattern decoration pattern made of an assembly of cells of a fixed partition size is formed on the back surface of the base sheet, the pattern decoration A cell having a fixed partition size of a pattern is composed of a cell a and a cell b each having a plurality of straight lines or curved patterns orthogonal to each other, and the cell a and the cell b are continuously formed adjacent to each other. When the pitch interval of the micro pattern of a is x, the pitch interval of the micro pattern of the cell b is y, and the pitch interval of the convex lens-like projections on the surface is z, the relationship of x <z <y is satisfied. Is an injection-mold decorating products.
[0010]
Further, the present invention is an injection-molded simultaneous decorative product in which a convex lens-shaped protrusion is formed on a surface where a decorative sheet and a molding resin are integrated, and a plurality of the decorative sheets are provided on the surface of a transparent base sheet. The decorative sheet is provided with a convex lens-shaped protrusion, and a pattern decoration pattern made of an assembly of cells of a fixed section size is formed on the back surface of the base sheet, the cell having a fixed section size of the pattern decoration pattern. Cell a and cell b each having a plurality of straight or curved patterns orthogonal to each other, the cell a and the cell b being continuously formed adjacent to each other, and the pitch interval of the micro patterns of the cell a Is an injection molding simultaneous decorating product in which x <z <y, where x is the pitch interval of the micropattern of the cell b and y is the pitch interval of the convex lens-like projections on the surface.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 shows a perspective view of the decorative sheet of the present invention. FIG. 2: shows sectional drawing of the state which peels a decorating sheet from B metal mold | die after integrating a decorating sheet with molding resin. FIG. 3: shows sectional drawing of the decorating sheet | seat with a convex lens of this invention. FIG. 4 shows a cross-sectional view of a state in which a decorative sheet is set between an A mold and a B mold provided with a plurality of concave concave portions for forming convex lenses having a pitch interval of z on the surface. FIG. 5: shows sectional drawing of the state in which the injection molding simultaneous decorating product in which the convex lens-shaped protrusion was formed in the surface is obtained by integrating a decorating sheet and molding resin. FIG. 6 shows a cross-sectional view of the simultaneous injection-molded decorative article of the present invention.
[0012]
The decorative sheet 4 has a configuration in which at least a pattern decoration pattern layer 2 is provided on a transparent substrate sheet 1.
[0013]
The transparent substrate sheet 1 includes a single layer film selected from resins such as polyester, polycarbonate, polyamide, polyimide, acrylic, olefin, urethane, acrylonitrile butadiene styrene, or two or more resins selected from these. There are laminated films or copolymer films.
[0014]
As for the thickness of the base material sheet 1, 5 micrometers-2000 micrometers are preferable. If the thickness is less than 5 μm, wrinkles tend to occur and the printing process becomes unstable. When the thickness exceeds 2000 μm, transparency may not be maintained depending on the material.
[0015]
The pattern decoration pattern layer 2 is made up of an assembly of cells a and cells b having a fixed section size made up of a plurality of straight or curved patterns orthogonal to each other. The compartments of cell a and cell b are rectangular, and the compartment size is preferably 0.5 mm square to 20 mm square when square. If the partition size is smaller than 0.5 mm, pattern formation is difficult, and if it is larger than 20 mm square, the design is poor.
[0016]
The line width, pitch interval, and number of the plurality of straight lines or curved patterns may be arbitrarily determined. However, it is necessary to fit in one section, and the cell a and the cell b are continuously formed adjacent to each other, and the pitch interval x between a plurality of straight lines or curved patterns constituting the cell a and the cell b Must be different from the pitch interval y of the plurality of straight lines or curved patterns, so that the relationship of x <z <y is established with the pitch interval z of the convex lens-shaped projections to be formed later. To do. In addition, each one line of the said straight line or curve pattern may consist of the aggregate | assembly of a further fine line or curve pattern (refer FIG. 1).
[0017]
The material of the pattern decoration pattern layer 2 includes acrylic resin, nitrified cotton resin, polyurethane resin, chlorinated rubber resin, vinyl chloride-vinyl acetate copolymer resin, polyamide resin, polyester resin, epoxy resin, etc. There is no particular limitation.
[0018]
The film thickness of the pattern decoration pattern layer 2 is preferably 0.5 μm to 50 μm. If the film thickness is less than 0.5 μm, there is a problem that sufficient designability and concealment cannot be obtained, and if it is more than 50 μm, there is a problem that fine patterning becomes difficult.
[0019]
As a method for providing the pattern decoration pattern layer 2, there are general-purpose printing methods such as gravure printing, screen printing, and offset printing method, tampo printing, painting, and various coating methods, but the offset printing method is most preferable because it is a fine pattern. .
[0020]
Note that a pattern layer 3 such as a character, a geometric pattern, or a solid pattern may be provided before and after the pattern decoration pattern layer 2. The pattern layer 3 may be provided with a metal film layer such as aluminum, chromium, copper, nickel, indium, tin, or silicon oxide by a method such as vacuum deposition or plating. In this case, the metal film layer may be entirely or patterned. Moreover, you may provide an adhesive layer, an anchor layer, etc. as needed.
[0021]
As a method of providing the pattern layer 3, the adhesive layer, the anchor layer, and the like, there are general-purpose printing methods such as gravure printing, screen printing, and offset printing, tampo printing, painting, and various coating methods. Examples of the method for providing the metal film layer include vapor deposition, ion plating, sputtering, and the like.
[0022]
The film thickness of the pattern layer 3 is preferably 0.5 μm to 50 μm. When the film thickness is less than 0.5 μm, there is a problem that sufficient designability cannot be obtained, and when it is more than 50 μm, there is a problem that it is difficult to dry after printing. However, in the case of a metal film layer, 50 to 1200 mm is preferable. This is because if the thickness of the metal film layer is less than 50 mm, there is a problem that sufficient metallic luster cannot be obtained, and if it is more than 1200 mm, there is a problem that cracks are likely to occur.
[0023]
In the decorative sheet 5 with a convex lens, a plurality of convex lens-shaped protrusions 7 made of a filling resin 6 are formed on the decorative sheet 4.
[0024]
Examples of the material of the filling resin 6 include resins such as epoxy, polyester, polycarbonate, polyamide, polyimide, acrylic, olefin, urethane, acrylonitrile butadiene styrene, and the like. The material of the filling resin 6 may be the same as or different from the material of the transparent base sheet 1.
[0025]
The shape of the convex lens-shaped protrusion 7 is preferably a hemispherical shape having a radius of 0.02 mm to 500 mm or a shape close thereto. If the radius is smaller than 0.02 mm, there is a problem that the lens effect can be obtained only in a part of the pattern decoration pattern layer 2, and if it is larger than 500 mm, the lens effect is lowered. The lens effect here refers to an effect of enlarging the pattern of the pattern decoration pattern layer 2 to make it visible.
[0026]
The pitch interval of the convex lens-shaped projections 7 is x for the micro pattern pitch interval of the cell a of the pattern decoration pattern layer 2, y for the micro pattern pitch interval of the cell b, and z for the pitch interval of the convex lens-shaped projection on the surface. In this case, the relation x <z <y is set. In particular, x is preferably a pitch interval 0.80 to 0.98 times z, and y is preferably a pitch interval 1.02 to 1.20 times z.
[0027]
If x is a pitch interval less than 0.80 times z or y is a pitch interval exceeding 1.20 times z, the enlarged pattern of the pattern decoration pattern layer 2 is easily deformed obliquely, and x is z If the pitch interval is 0.98 times greater than or equal to 0.98 or less than 1.02 times z, the lens effect cannot be obtained.
[0028]
By setting in this way, the micro pattern of the cell a appears to be magnified by the lens effect of the protrusion 7 and sinks more than the actual position. On the other hand, the micro pattern of the cell b appears to be magnified by the lens effect of the protrusion 7 and also appears to rise above the actual position.
[0029]
As a method of providing the convex lens-shaped protrusion 7, there is a method in which the concave resin 13 of the B mold 12 is filled with molding resin, the decorative sheet is set in contact with the molding resin, and the decorative sheet is integrated with the molding resin. is there. Filling of the molding resin is performed by a technique such as dissolving the molding resin in an organic solvent or the like, plasticizing it by applying heat, etc., and pouring it into the recess 13 of the B mold 12. At that time, an adhesive layer may be provided on the surface of the decorative sheet 4 in order to facilitate the integration of the decorative sheet 4 and the filling resin 6.
[0030]
Further, as another method of providing the convex lens-shaped protrusion 7, the decorative sheet 13 is placed so that the concave portion 13 of the B mold 12 and the opposite surface of the pattern decoration pattern layer 2 of the decorative sheet 4 are in contact with each other, and pressure is applied. 4 is a method of deforming the surface of the base sheet 1 into the shape of the protrusions 7.
[0031]
As a means for applying pressure, in addition to a general-purpose embossing means, a means based on the inflow pressure of the injection molding resin 8 is provided such that a gate 14 is provided on the inner surface of the A mold 11 and the injection molding resin 8 is injected from the gate 14. Yes (see FIG. 5). In particular, the latter means can omit the step of joining the decorative sheet 5 with a convex lens and the injection-molded resin 8 when it is desired to obtain the simultaneous injection-molded decorative article 9 having the convex lens-attached decorative sheet 5 formed on the surface. Useful.
[0032]
Examples of the injection molding resin 8 include molding resins selected from resins such as polyester, polycarbonate, polyamide, polyimide, acrylic, olefin, urethane, acrylonitrile butadiene styrene, and two or more types of molding resins selected from these resins. be able to.
[0033]
【Example】
Example 1 A pattern decoration pattern layer made of an acrylic resin of 5 μm was formed on a 200 μm transparent base sheet made of a polyester resin by an offset printing method. The pattern of the pattern decoration pattern layer was composed of an aggregate of square cells a and cells b of 1 mm square, and was formed as a micro pattern consisting of straight lines with a line width of 80 μm, a number of six, and pitch intervals of 140 μm and 160 μm, respectively. A decorative sheet was obtained by forming a 500 mm aluminum vapor deposition layer on the pattern decoration pattern layer by a vacuum vapor deposition method.
[0034]
Next, a liquid epoxy resin was poured into the concave portion of the B mold 12 having a lens shape with a pitch interval of 150 μm, and after filling, the decorative sheet and the epoxy resin were set in contact with each other. After leaving for 2 days to solidify the epoxy resin, the decorative sheet was peeled off from the B mold 12 to obtain a desired decorative sheet with a convex lens. The obtained decorative sheet with a convex lens had a plurality of convex lens-shaped protrusions formed on the surface, and had a design feeling similar to a carbon cloth.
[0035]
(Example 2) A decorative sheet was obtained in the same manner as in Example 1 except that an adhesive layer made of an acrylic resin having a thickness of 5 µm was provided on the aluminum vapor deposition layer by a gravure printing method. Next, a decorative sheet is set between the B mold 12 having a lens shape with a pitch interval of 150 μm and the A mold having a gate portion on the inner surface, and a molding resin made of polycarbonate resin is injected from the gate portion. did. When the injection molded product was taken out from the mold after the molding resin was solidified, it was an injection molded simultaneous decorative product having a plurality of convex lens-shaped protrusions formed on the surface. The obtained injection-molded simultaneous decorative article exhibited an excellent design feeling similar to carbon cloth.
[0036]
【The invention's effect】
According to the present invention, a pattern decoration pattern composed of an assembly of cells having a constant partition size is formed on the surface of a transparent base sheet, and the cells of the constant partition size of the pattern decoration pattern are formed from a plurality of straight lines or curved patterns orthogonal to each other. Cell a and cell b, and the cell a and the cell b are continuously formed adjacent to each other. The pitch interval of a plurality of straight lines or curved patterns constituting the cell a is x, and the plurality of cells b are constituted. The decorating sheet is characterized in that x <y when the pitch interval of the straight line or curved pattern is y.
[0037]
Therefore, by providing a plurality of convex lens-shaped projections on the back surface of the base sheet, the pitch interval of the micropattern of the cell a is x, the pitch interval of the micropattern of the cell b is y, and the pitch interval of the convex lens-shaped projection on the surface When z is z, there is an effect that a decorative sheet with a convex lens having a relationship of x <z <y can be obtained.
[0038]
In the present invention, a molding resin is filled in a B mold having a plurality of convex lens-shaped concave portions each having a pitch interval of z on the surface, and the decorative sheet is set in contact with the molding resin. The decorative sheet with a convex lens is obtained by separating the decorative sheet from the mold B and then removing the decorative sheet from the mold B to obtain a decorative sheet having convex lens-shaped protrusions formed on the surface. It is. Therefore, there exists an effect which can manufacture a decorating sheet with a convex lens easily.
[0039]
In addition, the present invention provides a decorative object in which a plurality of convex lens-shaped protrusions are provided on the surface of a transparent base material sheet, and a pattern decoration pattern made up of an assembly of cells having a fixed section size is formed on the back surface of the base material sheet. In the pattern decoration pattern, cells having a fixed section size are composed of a cell a and a cell b, each of which has a plurality of straight lines or curved patterns orthogonal to each other, and the cells a and b are continuously formed adjacent to each other. X <z <y, where x is the pitch interval of the micropattern of the cell a, y is the pitch interval of the micropattern of the cell b, and z is the pitch interval of the convex lens-like projections on the surface. It is a decorative sheet with a convex lens.
[0040]
Therefore, there is an effect that a decorative sheet having a design feeling similar to carbon cloth can be obtained by the convex lens-shaped protrusions.
[0041]
Moreover, this invention sets the said decorating sheet between A metal mold | die, and B metal mold | die with which the recessed part for several convex lens formation which the pitch space | interval consists of z was provided in the surface, The molten molding resin is injected into the molding space formed by the A mold from the gate provided on the inner surface of the A mold, the molding resin is solidified, and the decorative sheet and the molding resin are integrated. By doing this, it is a manufacturing method of the injection-molding simultaneous decorating product characterized by obtaining the injection-molding decorating product in which the convex lens-shaped protrusion was formed on the surface. Therefore, there is an effect that it is possible to easily manufacture an injection-molded simultaneous decorative article having a convex lens-like protrusion formed on the surface.
[0042]
The present invention also relates to an injection-molded simultaneous decorative article in which a convex lens-shaped protrusion is formed on a surface where a convex lens-shaped decorative sheet and a molding resin are integrated, and the convex lens-shaped decorative sheet is a transparent base sheet. A decorative sheet in which a plurality of convex lens-shaped protrusions are provided on the surface of the base sheet, and a pattern decoration pattern made of an assembly of cells having a fixed section size is formed on the back surface of the base sheet, A cell having a partition size is composed of a cell a and a cell b each having a plurality of straight lines or curved patterns orthogonal to each other, and the cell a and the cell b are continuously formed adjacent to each other. When the pitch interval of the pattern is x, the pitch interval of the micro pattern of the cell b is y, and the pitch interval of the convex lens-like projections on the surface is z, the simultaneous injection molding that satisfies the relationship x <z <y is satisfied. A goods.
[0043]
Therefore, there is an effect that an injection molded simultaneous decorative product having a design feeling similar to carbon cloth can be obtained by the convex lens-shaped protrusion.
[0044]
[Brief description of the drawings]
FIG. 1 is a perspective view of a decorative sheet according to the present invention.
FIG. 2 is a cross-sectional view showing a state in which the decorative sheet is peeled off from the B mold after the decorative sheet is integrated with the injection molding resin.
FIG. 3 is a cross-sectional view of a decorative sheet with a convex lens of the present invention.
FIG. 4 is a cross-sectional view of a state in which a decorative sheet is set between an A mold and a B mold provided with a plurality of concave portions for forming convex lenses having a pitch interval of z on the surface.
FIG. 5 is a cross-sectional view showing a state in which an injection-molded simultaneous decorative product having a convex lens-like protrusion formed on the surface is obtained by integrating a decorative sheet and a molding resin.
FIG. 6 is a cross-sectional view of the simultaneous injection-molded decorative article of the present invention.

Claims (4)

  A decorative object in which a plurality of convex lens-shaped protrusions are provided on the surface of a transparent base sheet, and a pattern decoration pattern formed of an aggregate of cells of a fixed partition size is formed on the back surface of the base sheet, A cell having a fixed partition size of the decoration pattern is composed of a cell a and a cell b each having a plurality of straight lines or curved patterns orthogonal to each other, and the cell a and the cell b are continuously formed adjacent to each other, A decoration with a convex lens where x <z <y, where x is the pitch interval of the micropattern of cell a, y is the pitch interval of the micropattern of cell b, and z is the pitch interval of the convex lens-like protrusions on the surface. Sheet. A pattern decoration pattern made up of an assembly of cells of a fixed section size is formed on the surface of a transparent base sheet, and a cell made up of a plurality of straight or curved patterns in which the cells of the fixed section size of the pattern decoration pattern are orthogonal to each other The cell a and the cell b are continuously formed adjacent to each other, the pitch interval of the plurality of straight lines or curved patterns constituting the cell a is x, and the plurality of straight lines or curves constituting the cell b A decorative sheet having a relationship of x <y, where y is the pitch interval of the pattern, A mold, and B mold provided with a plurality of convex lens forming recesses having a pitch interval of z on the surface The molten molding resin is injected into the molding space formed by the decorative sheet and the A mold from the gate provided on the inner surface of the A mold, and the molding resin is solidified, Decorative sheet By the molding resin are integrated, x <z <a relationship of y, a manufacturing method of an injection mold decorating product, characterized in that to obtain an injection-mold decorating articles convex lens-like projections are formed on the surface . It is an injection-molded simultaneous decoration product in which a convex lens-shaped protrusion is formed by the convex lens on the surface where the decorative sheet with the convex lens and the molding resin are integrated, and the decorative sheet with the convex lens is on the surface of the transparent base sheet A decorative sheet provided with a plurality of convex lens-shaped protrusions and having a pattern decoration pattern formed of an assembly of cells of a fixed section size on the back surface of the base sheet, the decorative sheet having a fixed section size of the pattern decoration pattern The cell is composed of a cell a and a cell b having a plurality of straight lines or curved patterns orthogonal to each other, and the cell a and the cell b are continuously formed adjacent to each other, and the pitch of the micro pattern of the cell a When the interval is x, the pitch interval of the micropattern of the cell b is y, and the pitch interval of the convex lens-like projections on the surface is z, the simultaneous injection molding with the relationship of x <z <y is satisfied. Goods.   It is an injection-molded simultaneous decorative product in which a convex lens-shaped protrusion is formed on the surface where the decorative sheet and the molding resin are integrated, and a plurality of convex lens-shaped protrusions are formed on the surface of the transparent base sheet. A decorative sheet provided with a pattern decoration pattern formed of an assembly of cells of a fixed section size on the back surface of the base sheet, wherein the plurality of cells having the fixed section size of the pattern decoration pattern are orthogonal to each other The cell a and the cell b, each having a straight or curved pattern, are continuously formed adjacent to each other, and the pitch interval of the micro pattern of the cell a is x, An injection molding simultaneous decorating product having a relationship of x <z <y, where y is the pitch interval of the micropattern and z is the pitch interval of the convex lens-like projections on the surface.

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