JPH0331327B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for manufacturing a cosmetic fiber-reinforced plastic structure that has strength and rigidity and is colored or fluorescently colored.

[Conventional technology]

Conventionally, cosmetic structures that have strength and rigidity and are colored or fluorescent have been manufactured by winding unidirectional fibers by the method shown in FIG. 9, for example, and then painting the outer layer. FIG. 10 is a sectional view showing a cosmetic structure manufactured by this conventional method. In the figure, 1 is a metal mandrel for winding and laminating unidirectional fibers 2 such as glass fibers, 3 is a resin bath for impregnating the unidirectional fibers 2 with thermosetting resin 4, and 5 is a winding machine ( (not shown).
6 is a laminate after winding, and 7 is a paint layer applied to the outer periphery of this laminate 6.

The conventional cosmetic structure is constructed as described above and manufactured by the following method.

First, the end of a mandrel 1 fixed to a chuck 5 is passed through a resin bath 3 containing a thermosetting resin 4, and a unidirectional fiber 2 impregnated with a thermosetting resin 4 such as epoxy resin is fixed therein. Next, rotate the chuck 5 and mandrel 1, and at the same time move the resin bath 3 in a direction parallel to the mandrel 1 (arrow A in Figure 9).
direction) to wind the unidirectional fibers 2 onto the mandrel 1. After winding is completed, the mandrel 1 on which the unidirectional fibers 2 impregnated with the thermosetting resin 4 are laminated is removed from the chuck 5, a release film or the like (not shown) is wrapped around the outer periphery, and the mandrel is heated and cured. A paint is applied to the outer layer of the laminate 6 after heating and curing, and a paint layer 7 is provided to complete the cosmetic structure.

[Problem that the invention attempts to solve]

In the conventional cosmetic structure manufacturing method as described above, the thermosetting resin 4 of the resin bath 3 of the unidirectional fiber 2 is
Since the impregnation process and the winding process are performed in a normal room, many voids remain between the unidirectional fibers 2 and in the thermosetting resin 4. Therefore, even if a structure is manufactured for cosmetic use by inserting a core material inside, coloring it, and winding it with transparent fibers such as glass fiber,
Due to the voids that occur, the outer layer made of glass fibers does not become transparent, making the colored colors invisible and impairing the cosmetic effect. Furthermore, even if the glass fibers of the outer layer are colored, there is a problem in that the painted surface is damaged by dust, dirt, etc. that adhere to it, and the painted surface becomes rough, impairing the cosmetic effect.

This invention was made in order to solve the above-mentioned problems, and it has strength and rigidity, has a colored part on the inside, and in combination with a patterned part provided on the outer layer, it creates a structure with a high cosmetic effect. The purpose is to obtain a method for manufacturing.

[Means for solving problems]

The method for manufacturing a cosmetic fiber-reinforced plastic (hereinafter referred to as FRP) structure according to the present invention includes a first step of coloring the periphery of a synthetic resin core material; The second step was to cover and tension a braided bag made of a mixture of transparent fibers and colored fibers into a sleeve, and to place the coated core material in a mold and maintain a vacuum inside the mold. After that, the manufacturing method includes a third step of press-fitting a transparent resin and thermosetting molding.

[Effect]

The method of manufacturing a cosmetic FRP structure in this invention involves tensioning and arranging a braided bag made of a mixture of transparent and colored fibers into a sleeve shape, which causes the fibers to sag and sag when a transparent resin is press-fitted. It maintains its strength as a structure, and by press-fitting a transparent resin into a vacuum mold, it is braided in both colorless and colored colors, and the colored core material is colored through the hardened braided bag strip. The applied paint lifts up, producing a highly cosmetic FPR structure.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 6.

Figure 1 is a cross-sectional view showing a state in which the outer periphery of a synthetic resin foam core material is coated with a braided bag band made of a mixture of transparent and colored unidirectional fibers after being colored, and placed under tension in a mold. , FIG. 2 is a sectional view taken along line AA in FIG. 1, and FIG. 3 is a sectional view taken along line BB in FIG. In addition, Figure 4 is an external view showing the state in which the core material is colored, and Figure 5
The figure is an external view showing the state in which the core material is covered with a knitted bag band, and FIG. 6 is an external view showing the state after molding. In the figure, 8 is, for example, urethane resin, phenol resin, vinyl chloride resin, polyethylene resin,
Core material made of foam such as polyethylene resin, 9
is a paint such as a colored paint, a fluorescent paint, a phosphorescent paint, or a luminescent paint applied on the core material 8. 10
This is a braided bag band in which transparent fibers 11 such as glass fibers and unidirectional fibers 12 such as carbon fibers or aramid fibers are mixed and braided. Reference numeral 13 denotes a transparent resin such as an unsaturated polyester resin, an epoxy resin, or a urethane resin, which is impregnated from the outside of the core material 8 covered with the braided bag band 10 and cured, and has fast curing properties and excellent weather resistance. Reference numeral 14 denotes a mold in which a core material 8 is installed, in which the braided bag band 10 is covered and both ends of which are fixed under tension with holding tape (not shown), and the core material 8 has very little unevenness on both sides. It is arranged with an interval of 0.2 to 2.0 mm from the finished mold body 15. Holding parts (not shown) of a holding mold 16 on the degassing side and a holding mold 10 on the injection side are fixed to the upper and lower sides of the mold body 15. This holding type 1
6, a hose 19 is connected to a vacuum pump 20 from a mold 14 to a degassing port 18 provided at several places around the fitting part.
It's up to the point. The holding mold 17 also has an injection port 2.
The transparent resin 13 is connected to an injection device (not shown) via a hose 22, and the transparent resin 13 is passed through a microwave reservoir 23 and through channels 24 provided at several locations around the fitting part. Type 14
is press-fitted into the

A cosmetic FRP structure according to an embodiment of the present invention is manufactured in the following manner using the above configuration. First, as shown in FIG. 4, a paint 9 prepared in advance is applied to the outer periphery of the core material 8, and unidirectional fibers consisting of transparent fibers 11 and colored fibers 12 are mixed and braided as shown in FIG. The bag band 10 is covered, and its both ends are tightened with a holding tape or the like (not shown) to remove slack and slack in the fibers, and then fixed. Next, this coated core material 8 is inserted into the mold body of the mold 14 and fixed at the center of the mold 14 by the upper and lower holding molds 16 and 17. The holding molds 16, 17 and the mold body 15 have an airtight structure. Next, the degassing port 18 is evacuated by the vacuum pump 20, and the injection port 2 is connected to the hose 22 and the inlet
1, a transparent resin 13 having fast curing properties and excellent weather resistance is press-fitted. Next, it is heated and cured, and when removed from the mold 14, there is no void, the transparent resin 13 is impregnated into the braided bag band 10 and hardened, a minute resin layer is provided on the outer layer, and the mold body 15 is finished with very little unevenness. The inner surface is transferred. As a result, as shown in FIG. 6, the paint applied to the outer circumferential surface of the core material 8 rises from areas other than the areas where colored fibers are mixed in the outer layer.
An unprecedented cosmetic FRP structure is manufactured.

In the above embodiment, the cross section of the cosmetic FRP structure was cylindrical, but as shown in FIGS. 6 and 7, it may be a polygon such as a quadrangle or a triangle, and the same effect as in the above embodiment can be obtained. play.

〔Effect of the invention〕

As described above, according to the present invention, cosmetic
The FRP structure consists of the first step of coloring the outside of a core made of resin, and then braiding a mixture of transparent unidirectional fibers and colored unidirectional fibers around this core material into a sleeve shape. The second step is to cover and tension the braided bag band, and the third step is to place the coated core material in a mold, keep the inside of the mold in vacuum, and then press-fit a transparent resin and thermoset mold it. Since it is manufactured from the same material, there will be no voids, and the colored paint on the core material can be lifted up through the hardened braided bag band, which is braided into colorless and colored layers. This has the effect of providing an FRP structure that is not damaged and prevents the cosmetic effect from being impaired.

In addition, a fast-curing resin can be used, so even if the color tone of the paint changes, the same one can be used, and it is possible to obtain an inexpensive and aesthetically pleasing FRP structure.

[Brief explanation of the drawing]

FIG. 1 shows a state in which a synthetic resin core material according to an embodiment of the present invention is coated with a braided bag band made of a mixture of transparent and colored unidirectional fibers after being colored, and placed under tension in a mold. 2 is a sectional view showing the 1st
FIG. 3 is a sectional view taken along line AA in the figure, and FIG. 3 is a sectional view taken along line BB in FIG. FIG. 4 is an external view showing the state in which the core material is colored during the manufacturing process according to the present invention;
FIG. 5 is an external view showing a state in which the core material shown in FIG. 4 is covered with a braided bag band. FIG. 6 is an external view showing a state in which the braided bag is coated and then molded. 7th
8 is a cross-sectional view showing a structure manufactured according to another embodiment of the present invention, FIG. 9 is a perspective view showing a state manufactured according to a conventional example, and FIG. 10 is a cross-sectional view showing a conventional structure. It is. In the figure, 8 is a core material,
9 is paint, 11 is transparent fiber, 12 is colored fiber, 1
3 is a transparent resin, and 14 is a mold.

Claims (1)

[Claims] 1. A first step of coloring the outer periphery of a synthetic resin core material, and a sleeve in which unidirectional fibers consisting of transparent fibers and colored fibers are mixed around the core material. The second step is to cover the braided bag band which has been braided into a shape, and tension its both ends.The coated core material is placed in a mold, the inside of the mold is kept in a vacuum, and then a transparent resin is press-fitted. and a third step of thermosetting molding. 2. The method for manufacturing a cosmetic fiber-reinforced plastic structure according to claim 1, characterized in that glass fibers are used as the transparent fibers, and carbon fibers or aramid fibers are used as the colored fibers. 3 Urethane resin, phenolic resin, as core material
Claim 1, characterized in that a foam of at least one resin among vinyl chloride resin, polyethylene resin, and polypropylene resin is used.
A method for producing a cosmetic fiber-reinforced plastic structure according to item 1 or 2. 4. A method for manufacturing a cosmetic fiber-reinforced plastic structure according to any one of claims 1 to 3, characterized in that a colored paint is applied to the outer surface of the core material as a colored coloring treatment. . 5. Claim 1, characterized in that the outer surface of the core material is coated with at least one of fluorescent paint, luminescent paint, and luminous paint as a colored coloring treatment.
A method for manufacturing a cosmetic fiber-reinforced plastic structure according to any one of items 1 to 3. 6. Claims 1 to 5, characterized in that at least one of an unsaturated polyester resin, an epoxy resin, and a urethane resin, which is fast-curing and has excellent weather resistance, is used as the transparent resin. A method for producing a cosmetic fiber-reinforced plastic structure according to any one of the above.