JPH08336849A - Manufacture of frp made molding - Google Patents

Abstract

PURPOSE: To obtain a molding wherein a decorative sheet is easily and accurately arranged at a specified position by a method wherein after temporarily fixing the decorative sheet with a pressure sensitive adhesive tape or a pressure sensitive adhesive, a molding material containing a glass fiber is placed, molded by pressure heating, and the decorative sheet is integrated into the molding material. CONSTITUTION: A heat sticky pressure sensitive adhesive double coated tape 2 of a thin rayon from which release paper is peeled off is stuck to a female mold 3. When the entire tape 2 becomes hot, the release paper on the tape 2 is peeled off, is decorative sheet 1 wherein a pattern is printed on wood free paper containing, for example, titanium, which is surface treated by thermosetting polyester resin, is stuck onto that, and temporarily fixed at a position of a washing place for a water proofing pan of the female mold 3. Then, a molding material 4 containing a glass fiber is laminated on the decorative sheet 1, which is put between a male mold and the female mold, and pressure molded by heating with the male mold at about 135 deg.C and the female mold 3 at 145 deg.C. After integrating decorative sheet 1 with the molding material 4, the water proofing pan with which the decorative sheet 1 is integrated is taken off from the mold tool.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an FRP molded product having a decorative sheet.

[0002]

2. Description of the Related Art Conventionally, a molded article having a decorative sheet is
For example, a method of manufacturing by making a step in the lower mold part corresponding to the end of the decorative sheet so as not to shift,
A method of manufacturing by impregnating the decorative sheet placed on the lower mold with resin so that the decorative sheet does not shift, or placing the decorative sheet on the entire surface of the molding lower mold and integrating the molding material. It is manufactured by the method of manufacturing.
However, these manufacturing methods have a problem in that it is necessary to provide a step on the lower mold in advance, or wrinkles are caused by impregnation of the resin, and therefore wrinkles must be extended with a roll or the like, or There is a problem that it is necessary to stack the decorative sheet even on a necessary portion, which is difficult in terms of work. Further, as a manufacturing method by hand layup or spray up, there is a method of spraying a base color gel coat resin, then spraying a chip pattern etc. to make a pattern, a method of giving a geometric pattern by masking, etc. These methods require many steps for decorating, require skill, work efficiency is low, and the unit price of the product is high.

[0003]

DISCLOSURE OF THE INVENTION According to the present invention, when the decorative sheet and the molding material are integrated, the decorative sheet and the molding material containing glass fiber are temporarily fixed to a mold with an adhesive tape or an adhesive. After that, the both are integrated, and it is an object of the present invention to manufacture a molded body in which a decorative sheet is arranged at a predetermined position easily and accurately.

[0004]

According to the invention of the present application, a decorative sheet is temporarily fixed to a mold in advance by an adhesive tape or an adhesive on the surface in contact with the mold, and then a molding material containing glass fibers is applied thereon. The present invention relates to a method for producing a molded article having a decorative sheet, particularly a waterproof pan, a bathtub, and a front plate of a counter, by placing the decorative sheet and the molding material on the same body.

Specifically, when a pressure-sensitive adhesive tape or a pressure-sensitive adhesive is attached or applied to a mold or a decorative sheet at a predetermined position of the lower mold, and the pressure-sensitive adhesive tape has a pressure-sensitive adhesive on one surface, the pressure-sensitive adhesive is further added. After applying the, the decorative sheet is temporarily fixed to the lower mold, a molding material containing glass fiber is placed thereon, and the decorative sheet and the molding material are integrated to form a molded article having the decorative sheet. In addition, a double-sided pressure-sensitive adhesive tape is attached to the surface of the decorative sheet that contacts the mold or the lower mold, and then the lower mold is superposed at a predetermined position and temporarily fixed, and then molded including glass fiber. In this method, a material is placed, and then sandwiched by an upper mold and subjected to pressure heat molding or heat molding as it is, and a decorative sheet and a molding material are integrated to produce a FRP molded body. In particular, it is preferable that a double-sided adhesive tape is attached to a decorative sheet or mold to temporarily fix the decorative sheet and the mold, and the molding material containing glass fiber is integrated to manufacture an FRP molded body. As the pressure-sensitive adhesive, any conventionally used one may be used as long as the decorative sheet can be adhered to the lower mold. A room-temperature pressure-sensitive adhesive, a heat-sensitive pressure-sensitive adhesive, etc. are preferable, and a laminate of these is preferable. Further, it is preferable that the sheet side is laminated such that the room temperature adhesive is in contact with the mold side and the heat sensitive adhesive is in contact with the mold side. The pressure-sensitive adhesive may be such that it can be fixed to the decorative sheet, but it is particularly preferable to dispose it on the periphery of the decorative sheet.

The double-sided pressure-sensitive adhesive tape is particularly preferable since it is easy to work and can be fixed so that the decorative sheet does not move when it is filled with the molding material containing glass fiber. used. The double-sided adhesive tape is preferably thin, and the material is preferably rayon or the like. Also, the tape is preferably transparent, but a decorated tape is also preferable.

As the molded product, a waterproof pan, a bathtub, a counter front plate and the like are used, and a waterproof pan, a bathtub and a counter front plate are preferable. As the molding material, a curing agent, a thickener, an internal mold release agent, a pigment, a filler and the like can be mixed in addition to the synthetic resin of unsaturated polyester and the glass fiber.

As the decorative sheet, a commonly used sheet is used, and a sheet obtained by printing a pattern on a high-quality paper containing titanium and surface-treated with a thermosetting polyester resin is particularly preferable. The decorative sheet is temporarily fixed to the mold with a double-sided adhesive tape or the like, and then air between the decorative sheet and the mold is removed by a roll or the like, if necessary.

In the molding by pressing, it is preferable that the glass fiber and the synthetic resin such as unsaturated polyester resin have a high viscosity in order to integrally flow and uniformly flow in the mold without being separated, and the glass fiber is contained. When the viscosity of the molding material is high, it is necessary to increase the pressure. Further, when a low shrinkage resin is used, fluidity, moldability, dimensional stability and surface shape are improved.

Molding by hand lay-up is carried out by successively laminating glass fibers impregnated with a synthetic resin such as unsaturated polyester resin or by repeating a step of laminating glass fibers and impregnating the synthetic resin, and then laminating the rollers. ,
The surface is pressed by a press machine or the like, and it is manufactured by heat molding. Molding by spray-up is carried out by spraying glass fiber and synthetic resin such as unsaturated polyester resin from nozzles, and then heat molding.

The present invention will be described below with reference to the drawings.

【Example】

Example 1 As shown in FIG. 1, a thin rayon heat-adhesive double-sided pressure-sensitive adhesive tape 2 from which a release paper is peeled off is attached to a lower mold 3. When the entire tape becomes hot, the release paper on the tape is peeled off, and a decorative sheet 1 having a pattern printed on a high-quality paper containing titanium and having a surface treated with a thermosetting polyester resin is pasted on it. Temporarily fix the waterproof pan of the mold 3 at the washing place. Then, a molding material 4 containing glass fiber is laminated on the decorative sheet 1 and sandwiched between the upper molds, and the temperature of the upper mold is set to about 135 ° C. and the temperature of the lower mold is set to about 145 ° C., and heat press molding is performed. . After the decorative sheet and the molding material are integrated, the waterproof pan with the integrated decorative sheet is taken out of the mold. The waterproof pan integrated with the decorative sheet produced by this method could be integrated with the decorative sheet at a predetermined position in the predesigned waterproof pan washing place. Also, as the double-sided tape, a tape having a pressure-sensitive adhesive in which a heat-sensitive adhesive is laminated on the side facing the lower mold and a room-temperature adhesive is laminated on the decorative sheet side is used. The sheet for printing was integrated, then the release paper on the other side was peeled off, and the surface of the heat-sensitive adhesive was attached to the lower mold to manufacture a waterproof pan. The waterproof pan integrated with the decorative sheet produced by this method could be integrated with the decorative sheet at a predetermined position in the predesigned waterproof pan washing place. When the molding material containing glass fiber was filled without attaching the double-sided adhesive tape, the decorative sheet was slightly displaced from the designed predetermined position.

Example 2 As shown in FIG. 2, a thin rayon at room temperature adheres to a surface of a decorative sheet 1 having a pattern printed on a high-quality paper containing titanium, which is surface-treated with a thermosetting polyester resin, in contact with a molding die. Adhesive double-sided adhesive tape 2 and clear coat 6 beforehand
The decorative sheet 1 to which the double-sided adhesive tape 2 is attached is temporarily fixed to a predetermined position of the washing place of the waterproof pan of the molding die 5 coated with. Then, the molding material 4 containing glass fibers is laminated on the decorative sheet, uniformly pressed by a roller, and then heat-molded at 60 ° C., and a waterproof pan integrated with the decorative sheet is taken out from the mold. The waterproof pan integrated with the decorative sheet produced by this method could be integrated with the decorative sheet at a predetermined position in the predesigned waterproof pan washing place. When the molding material containing glass fiber was filled without sticking the double-sided adhesive tape, the decorative sheet was slightly displaced from the designed predetermined position.

EXAMPLE 3 A thin rayon double-sided adhesive tape having room temperature adhesiveness was attached to the surface of a decorative sheet, which was surface-treated with a thermosetting polyester resin, obtained by printing a pattern printed on high-quality paper containing titanium, in contact with a mold. , Stick it on the mold washroom and temporarily fix it. Next, a polyester resin containing glass fibers is sprayed onto the mold to which the decorative sheet is attached, and the roll is flattened by a roll, followed by heat molding at 50 ° C. After the heat molding, take out the waterproof pan with the decorative sheet integrated from the mold. The waterproof pan integrated with the decorative sheet produced by this method was able to integrate the decorative sheet at a predetermined position of the previously designed waterproof pan. When the molding material containing glass fiber was sprayed without sticking the double-sided adhesive tape, the decorative sheet was displaced from the designed predetermined position.

[0014]

Industrial Applicability According to the invention of the present application, a molding having a decorative sheet at a designed and required place by temporarily fixing the decorative sheet at a predetermined position of a mold with an adhesive or an adhesive tape, particularly a double-sided adhesive tape. Products, especially waterproof pans, bath tubs, and counter front plates, can be manufactured easily and at low cost, which makes it possible to prevent the decorative sheet from moving. In addition, it is not necessary to provide a step on the mold, and when the decorative sheet is paper quality, it is easy to handle, it is possible to accurately decorate at any position, and it is possible to decorate at the required place and the required size. Therefore, there is no need to impregnate or coat the entire decorative sheet with an adhesive material for the purpose of temporarily adhering to the mold, etc., and the sheet can be partially attached, so that the cost can be reduced. Further, since accurate patterning can be performed, defective products are less likely to occur, and cost can be reduced also in this respect. Furthermore, many decorative materials are not required, complicated patterning is possible, and the same decorative sheet can be used for both the hand layup method and the pressing method.

[Brief description of drawings]

FIG. 1 Lower mold for press molding on which a decorative sheet is temporarily fixed and a molding material is placed.

[Fig. 2] Hand lay-up molding die on which a decorative sheet is temporarily fixed and a molding material is placed.

[Explanation of symbols] 1 decorative sheet 2 double-sided adhesive tape 3 lower mold 4 molding material containing glass fiber 5 molding mold 6 clear coat

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Claims (5)

[Claims] 1. A decorative sheet is temporarily fixed to a predetermined position of a lower mold with an adhesive tape or an adhesive, and then a molding material containing glass fibers is placed thereon and sandwiched between the upper molds for pressure heating molding. A method for producing an FRP molded body, characterized by integrating a decorative sheet and a molding material. 2. A double-sided pressure-sensitive adhesive tape is affixed to the surface of the decorative sheet that contacts the mold or to the lower mold, and then the decorative sheet is temporarily fixed to a predetermined position of the lower mold, and then a molding material containing glass fiber is applied. A method for producing an FRP molded body, which comprises placing the decorative sheet and a molding material into one piece by placing the decorative sheet and pressurizing and heating it by sandwiching it between upper molds. 3. A glass coated with a resin or impregnated with a glass fiber sheet after temporarily fixing an ornamental sheet with an adhesive tape or an adhesive at a predetermined position of a mold coated with a clear coat. Overlapping fibers and heat molding,
A method for producing an FRP molded body, characterized by integrating a decorative sheet with a molding material. 4. A double-sided pressure-sensitive adhesive tape is affixed to the surface of the decorative sheet that contacts the mold or to the lower mold in advance, and then temporarily fixed to a predetermined position of the decorative sheet mold, and then a molding material containing glass fibers is mounted. A method for producing an FRP molded body, characterized by integrating the decorative sheet and the molding material by placing them and heat-molding them. 5. The method for producing an FRP molded article according to claim 1, wherein the FRP molded article is a waterproof pan, a bathtub, or a counter front plate.