JPH09174792A - Decorative molding sheet and method for manufacturing decorative molded product - Google Patents

Abstract

(57) [Abstract] [Problem] A decorative molding sheet and a decorative molded product, in which many kinds of designs that can be expressed and a pattern with a three-dimensional effect are expressed, and a decorative molded product with a high-class feeling can be obtained. A method for manufacturing the same is provided. SOLUTION: A printed or patterned base sheet is impregnated with a transparent thermosetting resin composition F
In the RP decorative molding sheet, the thermosetting resin 10
1 to 10 parts by weight of a handle material having a particle diameter of 0.05 to 1 mm is contained with respect to 0 parts by weight.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is for producing a molded product such as a bathroom flooring (waterproof pan) made of FRP with a handle, a wall material, and a bathtub by heating and pressing a thermosetting molding material in a molding die. Of the decorative molding sheet, and a method for manufacturing a decorative molded article using the same.

[0002]

2. Description of the Related Art As a method for producing a FRP (fiber reinforced plastic) molded product having a pattern on its surface, a resin-impregnated paper obtained by impregnating a paper on which a pattern is printed with a thermosetting resin is placed on a mold and thermoset. A method is known in which a glass cloth impregnated with a functional resin is placed thereon and hot press-molded (for example, JP-A-5-285973). Further, in the method using a pattern material, a method of mixing a pattern material into SMC (sheet molding compound) or BMC (bulk molding compound) and using the pattern material to pattern the entire molded product is performed.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
According to the method described in Japanese Patent No. 973, the printed titanium paper is impregnated with the transparent resin, so that the design pattern appearing on the molded product is flat and does not have a feeling of depth, and a high-grade feeling cannot be obtained. In addition, a molded product formed by using SMC or BMC mixed with a pattern material can only obtain a design as a “grain pattern” by the pattern material, which has a drawback that the range of designs that can be expressed is limited.

The present invention solves the above-mentioned problems of the prior art, has many kinds of designs that can be expressed, and can express patterns with a three-dimensional effect
It is an object of the present invention to provide a decorative molding sheet that can obtain a decorative molded article with a high-quality feeling, and a method for manufacturing a decorative molded article.

[0005]

A decorative molding sheet according to claim 1, wherein a printed or patterned base sheet is impregnated with a transparent thermosetting resin composition.
In the P decorative molding sheet, the thermosetting resin 100
1 part of the pattern material having a particle size of 0.05 to 1 mm with respect to parts by weight
10 to 10 parts by weight are contained.

The method for producing a decorated molded article according to claim 2 is:
A method for producing a decorative molded article, in which a decorative molding sheet obtained by impregnating a base sheet with a thermosetting resin composition is hot press molded in a state of being interposed between a mold and a thermosetting molding material. In 100 parts by weight of the thermosetting resin composition,
1 to 10 parts by weight of a handle material having a particle size of 0.05 to 1 mm is contained.

The base sheet used for the decorative forming sheet according to claim 1 is paper, cloth, non-woven fabric, glass mat,
Glass cloth and the like can be used, and these are colored by printing or dyeing. These substrate sheets may be a single layer or may be a laminate of two or more sheets, and the basis weight is preferably 50 to 500 g / m ² . If the basis weight is less than 50 g / m ² , the decorative molding sheet will be broken or stretched during molding, and if it exceeds 500 g / m ² , the cost will be high and it will be economically disadvantageous.

As the above-mentioned paper, various conventionally known papers are used. For example, thin paper, titanium paper, newsprint paper, high-quality paper, medium-quality paper, waste paper, gravure paper, art paper, coated paper, writing paper, drawing paper, etc. can be used. As the cloth and non-woven fabric, it is possible to use natural fibers such as silk, hemp, and cotton, regenerated fibers such as rayon, and synthetic fibers such as polyester, nylon, and acrylic. The glass cloth is a woven glass fiber, and the glass mat is a sheet-shaped material in which the intersections of the non-woven glass fibers are bonded with an adhesive.

As the printing method for the above-mentioned base sheet, various conventionally known methods are adopted. For example, gravure printing,
Gravure offset printing, silk screen printing, letterpress printing, offset printing and the like can be mentioned. Further, the coloring method may be a conventionally known method, for example, a method of mixing a pigment or the like at the time of papermaking, a method of soaking in ink or the like after papermaking, a method of applying paint or a paint.

Here, various coloring or printing modes can be selected according to the purpose. For example, a single color may be used and a pattern or pattern may be formed using a plurality of colors.

The thermosetting resin composition to be impregnated into the decorative molding sheet according to the present invention includes unsaturated polyester resin, epoxy acrylate resin, urethane acrylate resin,
Examples thereof include compositions made of various thermosetting resins such as diallyl phthalate resin.

For impregnating the base sheet with the thermosetting resin composition, the base sheet is dipped in a tank containing the resin composition for impregnation, and the excess resin is removed by squeezing with a roll or the like. , A method of feeding and impregnating a base material sheet while conveying a base material sheet on a belt, and squeezing the surface with a roll or a blade to remove an excess resin composition, and a resin composition for release paper And a base sheet laminated thereon is squeezed with a roll or a blade.

The resin composition is impregnated between the fibers of the base sheet, but the handle material hardly enters the base sheet and remains in the resin layer on the surface of the base sheet. Therefore, according to the method of dipping and impregnating the base material sheet in the tank containing the resin composition, the resin material on both surfaces of the base material sheet contains the pattern material. According to the method of impregnating the substrate sheet from one side, the handle material is contained only in the surface resin layer on one side. In any case, since the printed surface is viewed through the pattern material, a three-dimensional effect can be obtained.

Next, a method of manufacturing the decorated molded product according to claim 2 will be described. SMC, BMC as thermosetting molding material
Various thermosetting molding materials such as, are generally used. The thermosetting resin used for this is a resin that impregnates the decorative molding sheet, and various fillers, reinforcing materials, and
You may add additives etc.

The molding machine may be one conventionally used for press molding, and the mold may be a conventional mold or casting mold. In the usual case, the mold is preferably of the upper and lower split type, and the upper mold is used as the movable mold and the lower mold as the fixed mold.

After heating the molding die to 80 to 180 ° C., the decorative molding sheet is placed on the lower die surface at a desired position.
Cover it with thermosetting molding material and tighten the mold to
When a mold is opened and demolded after being molded and cured by applying a pressure of 120 kg / cm ² for 30 seconds to 15 minutes, a decorative molded product in which a thermosetting molding material is laminated on the outside of the decorative molding sheet is obtained. can get.

The size of the decorative molding sheet used for molding may be selected according to the size and shape of the desired design. For example, it may be of a size that can decorate the entire surface of the molded product, or may be a small product that decorates only a part of the surface of the molded product.

(Function) In the decorative molding sheet according to the first aspect, the base sheet of the printed pattern is impregnated with the transparent thermosetting resin composition, and the pattern material is impregnated into the base sheet. Instead, it is contained in the resin composition on the surface of the base sheet. Therefore, the pattern material appears to float from the printed surface. As a result, a pattern pattern with a deep appearance appears and gives a sense of quality. In addition, the combination of the printed pattern and the pattern material can be freely selected, and many design expressions are possible.

According to the method for producing a decorative molded article according to claim 2, since the decorative molding sheet is simply placed between the mold and the thermosetting molding material and press-molded, a special step is required. It is possible to obtain a decorative molded article with a high quality without the need for.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described for a case where a pattern is attached to a washing part of a FRP waterproof pan of a bathroom unit. FIG. 1 shows a decorative molding sheet 1 of the present invention.
FIG. 3 is a cross-sectional view showing a state in which is laminated on the thermosetting molding material 3. As the base sheet 11 for impregnation, the basis weight is 80 g / m ²
A titanium-mixed paper (made by Kojin Co., Ltd.) having a geometric pattern printed by gravure printing was used. The impregnating resin 12 is 0.2 with respect to 100 parts by weight of diallyl phthalate resin.
The base sheet 11 was prepared by adding 2 parts by weight of 2 mm 2 of a colored aluminum foil (manufactured by Japan Moisture-proof Foil Paper Industry Co., Ltd.) having a square shape of mm.
Then, the sheet for decorative molding 1 was prepared.

FIG. 2 is a cross-sectional view showing a method for manufacturing a decorative molded product of the present invention, in which the upper mold 4 (product back side) and the lower mold 5 (product surface side) for press molding of the waterproof pan are each 130 ° C. 1
It was heated to 40 ° C., and the decorative molding sheet 1 was placed on the decorative portion of the lower mold 5 in the washing area so that the printing surface faced the mold. A required amount of SMC (manufactured by Takeda Pharmaceutical Co., Ltd.) was placed thereon as a thermosetting molding material 3, press-molded at 100 kg / cm ² for 5 minutes, and then the mold was opened to remove the mold to obtain a molded product.
On the surface of the molded product, the colored aluminum foil 2 dispersed on the printed pattern was seen, and it had a deep feeling and was excellent in design.

[0022]

EFFECT OF THE INVENTION In the decorative molding sheet of the present invention according to claim 1, the pattern material contained in the resin composition on the surface of the base sheet appears to float. As a result, a pattern pattern with a deep appearance appears and gives a sense of quality. In addition, the combination of the printed pattern and the pattern material can be freely selected, and many design expressions are possible.

According to the method for producing a decorative molded article according to claim 2, since the decorative molding sheet is simply placed between the mold and the thermosetting molding material and press-molded, a special step is required. It is possible to obtain a decorative molded article with a high quality without the need for.

[0024]

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a decorative molding sheet of the present invention.

FIG. 2 is a cross-sectional view showing an embodiment of a method for manufacturing a decorative molded product of the present invention.

[Explanation of symbols]

 1: Decorative molding sheet 2: Aluminum foil 3: Thermosetting molding material 4: Upper mold 5: Lower mold 11: Base sheet 12: Surface resin

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Claims (2)

[Claims] 1. An F obtained by impregnating a printed or patterned base sheet with a transparent thermosetting resin composition.
In the RP decorative molding sheet, the thermosetting resin 10
A decorative molding sheet comprising 1 to 10 parts by weight of a pattern material having a particle diameter of 0.05 to 1 mm with respect to 0 parts by weight. 2. A decorative molding sheet in which a base sheet is impregnated with a thermosetting resin composition is subjected to hot press molding while being interposed between a mold and a thermosetting molding material. In the method for producing a molded article, the thermosetting resin composition 100
1 part of the pattern material having a particle size of 0.05 to 1 mm with respect to parts by weight
-10 parts by weight is contained, and a method for producing a decorated molded article, characterized by the above.