JPS59212220A - Preparation of multicolor reinforced plastic molded piece - Google Patents

Abstract

PURPOSE:To obtain a multicolor reinforced plastic molded piece of good appearance by a method wherein a molded piece colored and molded in a desired hue and shape is fixed on the surface of a mold and then said mold is charged with reinforced plastic material different in hue from that of said molded piece and these reinforced plastic materials are heated, compressed into a unitary body. CONSTITUTION:A molded piece (insert, hereafter) 10 colored and molded previously in a desired hue and shape is fixed on the inside bottom 7 of the bottom force 1 of a set of a top force 2 and the bottom force 1, then a backup molding is conducted by the use of reinforced plastic material 11 different in hue from that of the insert 10, the reinforced plastic material 11 is bonded by heating and compression in a unitary body with the external circumferential surface except the surface through which the insert 10 sticks to the mold. In this manner, it is possible to prepare easily a reinforced elastic molded piece 16 where borderlines are provided clearly and finely between adjacent multicolored hues.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing reinforced glass molded products, so-called multicolored reinforced glass molded products.

Generally, reinforced plastic and plastic molded products are made by adding reinforcing materials such as glass fiber, glass fiber powder, and metal fiber to liquid resin made of thermosetting resin such as unsaturated polyester resin, Evoquin resin, phenol resin, and diallyl phthalate resin. , it is manufactured by inserting it into the closed space 3 of a molding die consisting of a combination of a female mold 1 and a male mold 2 as shown in FIG. 1, heating and pressurizing it, and hardening it, or As shown in Fig. 2, after filling the female mold 1 with a compound 4 containing a reinforcing material such as glass cloth or glass cloth containing the liquid resin listed in L, the male mold 2 is closed and the same process is carried out. It is then hardened and manufactured.

The following method is used to manufacture a molded product in which a plurality of colors of Nishikimachi F are arranged on one side of K1 reinforced plastic. That is, with the female mold 1 and the male mold 2 opened as shown in FIG. After coating the inner wall bottom surface T and fixing the periphery of the opening 6 by taping, the gel coat resin is colored in hue A using a spray gaff 8 etc. Spray and apply a gel coat resin (not containing gel coat resin) and leave it as is until the gel coat resin hardens and dries.

After the gel coat resin has hardened and dried, the mask 5 is placed in the female mold 1.
Then, the cured gel coat resin colored in hue M is masked, and the gel coat resin colored in hue BK is similarly sprayed and cured and dried. Next, after removing the mask 5, no coloring or arbitrary color + (coloring 1.
Back-up molding (
7. After this reinforced plastic material is cured, it can be removed to obtain a reinforced plastic molded product colored in two colors, or it can be colored in hue B without gel coating of hue B, as shown in Figure 4. This reinforced plastic is colored in two colors by placing a colored reinforced plastic, a plastic material 9, on a gel coat film 8 colored in different hues, directly and integrally back-up molding, and colored in two colors in the same manner as above.

They were trying to obtain molded products.

In this specification, backup molding refers to known hand V-ear, pu-molding, sprayer, pu-molding, sea urchin, )M
This term refers to MD (metal matte rubber) molding, SMC (sheet molded core/land) molding, other reinforced plastics, and die molding methods.

As mentioned above, conventional multicolored reinforced plastics 1. In the manufacturing method of plastic molded products, taping the mask 5 when spraying plastic materials of different hues into the mold is complicated, and no matter how carefully the taping is done, the boundaries between the different hues remain. 1) Chatter and smearing occur, which significantly impairs the appearance quality of the molded product.1) Also, even if you try to prevent these occurrences by thickening the colored gel coat film 8, the heat and pressure during backup molding Since cracks and ri are generated from the V, a thin film of approximately 0.5 mm is usually formed. Therefore, the fourth
As shown in the figure, a reinforced plastic material 9 is placed on top of the colored gel coat film 8, and when the molds 1 and 2 are closed and heated and pressurized, the material 9 flows and is filled into the mold 1. At this time, the gel coat film 8 is easily damaged by the flow V of the material 9, which has the disadvantage of impairing the appearance quality of the molded product.

Furthermore, it takes a considerable amount of time to spray and dry the gel coat resin, which lengthens the time the mold is occupied, reduces the rotation rate of the molding equipment, and increases the cost of the molded product. there were.

The present invention was devised by focusing on the drawbacks associated with the conventional method for producing multi-colored reinforced granite molded products. Multi-colored reinforced plastic and plastic molded products that have clear boundaries between hues, have good appearance quality, are easy to mold, and are inexpensive by reducing the time occupied by the mold of the molding equipment. The purpose is to provide a manufacturing method for.

The present invention will be explained based on the drawings in FIG.

FIG. 5 is a cross-sectional view for explaining one embodiment of the present invention.
A molded product (hereinafter referred to as an insert) 10 that has been colored and molded in a desired hue and shape is placed on the bottom surface 7 of the inner wall of the separation edge 1 of the mold consisting of the combination of the female mold 1 and the female mold 2. Then, back-up molding is performed using a reinforced plastic or plastic material 11 of a different hue from that of the insert 10. This Innocert 101d plastic molded product is a heat-resistant molded product consisting of a plastic molded product, a reinforced plastic product, a plastic molded product, or a metal molded product. Excellent molded products can be molded with high precision.

This Innosert 10 is usually simply attached to the bottom surface 7F of the inner wall of the female mold 1.
However, by the subsequent back-up molding method, the insert 10 and the reinforced plastic material 11 used for backup molding invade the surface of the insert 10. teeth,
It is best to form a release film (not shown) on the surface of Innosert 10 in advance. However, when the above-mentioned SMO (glass fiber mat or the like impregnated with a thermosetting resin) is used as a backup molding material, no intrusion deposits are generated, so this is not necessary.

By the method of molding, Innocert 10
If there is a risk that the mold may move from its fixed position in the female mold 1 and cause a problem, it should be fixed to the bottom wall of the female mold 1 from the inner wall bottom surface 7 of the female mold 1 by welding or the like. A plurality of small holes 14 are provided in the interior 13 of the airtight box 12, and the insert 10 is moved to its actual position by connecting a pipe 15 attached to the airtight box 12 to a vacuum pump (not shown) and suctioning it. It can be fixed to In the present invention, insert 1
Since the wall thickness of d1 is usually suitable for use, it can be easily fixed on the mold surface by vacuum suction.

After placing the insert 10 on the inner wall surface T of the female mold as described above, pack-a-bu molding is performed in a conventional manner using a reinforced glass material 11 of a different hue from that of the insert 1o. The outer peripheral surface of the insert 10, excluding the mold contact surface, is joined together with the RFC reinforced plastic and plastic materials 11 by the daily pressure, making it easy to form a multicolored reinforced plastic and plastic molded product as shown in the cross-sectional view of Fig. 6. can be manufactured. In FIG. 6, the insert 1o is colored in hue M. The molded article 16 is a reinforced plastic or paper colored in hue B.

In this case, it is not necessary to use only one type of insert 1o which is colored and molded in a desired hue and shape in advance, but inserts colored in many kinds of hues are molded into separate shapes and placed in a predetermined position in the female mold 1. After being placed in the desired position, a reinforced glass molded product having multicolored shapes and patterns on one side can be manufactured by back-up molding using reinforced glass materials of different hues. Also, female mold 1
The inner surface of the male mold 2 does not necessarily have to be a flat surface, and may be a complicated curved surface.

As described above, the present invention has a method in which a desired hue is set in advance on the mold surface.
The molded product colored and molded in the shape is placed in place, and a reinforced plastics material of a different hue from that of the molded product is loaded into the mold, and the molded product and the reinforced plastic are heated and pressed together. Multicolored reinforced plastic that can be joined together 2. Because it is a manufacturing method for plastic molded products, the boundaries between the multiple hues are clearly and beautifully formed, and it also expresses not only the difference in hue but also the difference in the texture of the molded product, reinforced plastic, and the surface of the plastic. In addition, since the insert 10 is a strong molded product, it will not be damaged by heat and pressure during backup molding (compared to conventional multicolored reinforced plastics 9). A molded product with a much superior appearance quality compared to a box molded product can be obtained. In addition, according to the present invention, the method for manufacturing molded products is simplified,
It has many advantages, such as eliminating the need for spraying and curing and drying gel coat resins, improving the turnover rate of molding equipment, reducing the incidence of defective products, and making it possible to manufacture at a lower cost. has.

[Brief explanation of the drawing]

Figure 1 is a schematic vertical cross-sectional view of a mold for molding reinforced plastics and plastic molded products, Figure 2 is a schematic vertical cross-sectional view showing an example of a method for manufacturing reinforced plastic molded products, and Figure 3 is a conventional multi-color reinforcement A schematic vertical cross-sectional view showing an example of a method for manufacturing a plastic molded product,
FIG. 4 is a schematic vertical cross-sectional view showing another example of the conventional method for producing multicolored reinforced glass molded products, and FIG. 5 shows an example of the method for producing multicolored reinforced plastic and glass molded products according to the present invention. FIG. 6 is a longitudinal cross-sectional view showing an example of a multi-colored reinforced plastic or plastic molded product manufactured according to the present invention. 1...Female mold, 2...Male mold, 5...Mask, 6...
・Opening part, 7...Bottom of inner wall, 8...Gel coat opening,
9... Reinforced plasti5. Box material, 10... Insert, 12... Airtight box, 14... Small hole, 11.16.
・One-produced plasti and kusu with 10 different hues. Figure 1 3 Figure 2 Figure 3, Figure 4

Claims (1)

[Claims] After placing a molded article colored in a desired hue and shape on the surface of a molding die, a reinforcing plastic or plastic material having a different hue from that of the molded article is loaded into the molding die. , the molded product and reinforced plastic by heating and pressing. A method for manufacturing multi-colored reinforced plastics and plastics molded products, which is characterized by integrally joining plastics and plastics.