JPH0948018A - Manufacture of steel plate reinforced fiber reinforced plastic mold plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing a fiber reinforced plastic mold plate having large durable using times and capable of simplifying the manufacturing steps by omitting a conventional sticking operation. SOLUTION: After a hard fiber reinforced plastic flat plate mold 15 is executed on a master mold 11 formed on the surface with an uneven pattern, the connecting surface is primer treated before the surface resin of the mold 15 is cured, a reinforcing steel plate 16 having a predetermined thickness and many connecting holes 17 formed is mounted, and cured in the state that the resin on the surface of the mold 15 is invaded into the holes 17.

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 a steel plate reinforced fiber reinforced plastic template used for manufacturing a building outer panel.

[0002]

2. Description of the Related Art When manufacturing a building outer panel used as an outer wall material or the like, a flat plate fiber reinforced plastic template (hereinafter, referred to as FRP) having an uneven pattern formed on the surface as necessary.
It was manufactured by pouring the mortar and the outer wall material into a mold having a bottom plate (called a template). Generally, the FRP template is formed by a combination of fibers and a matrix resin, and a polyester resin or a vinyl ester resin is used as the matrix resin. The FRP template contracts when cured (the linear resin varies depending on the type and composition of the fiber used). Since the shrinkage rate is 0.1 to 2.0%), warpage is always generated when the large FRP template is manufactured. This FRP
In order to reduce the warpage of the template, the fiber material and its content are changed so that the shrinkage rate of the matrix resin can be absorbed, or the shrinkage rate is reduced to 0 by adding a low shrinkage imparting agent to the matrix resin. It is also possible to suppress the shrinkage rate as much as possible by selecting the auxiliary material, adjusting the addition amount, and the molding method, and applying a stress to the fiber material so that the apparent shrinkage rate approaches 0. There are problems such as an increase in cost, an increase in processing cost, a decrease in mechanical properties, and a decrease in chemical properties. Therefore,
A steel plate reinforced FRP template having a steel plate attached to one surface of the FRP template to prevent warping is used in part.

[0003]

However, in the steel plate reinforced FRP template, the FRP template using a mechanically excellent hard FRP and the FRP template using a soft FRP which is relatively easy to manufacture are used. There is a board. Table 1 shows the characteristics of both
Shown in

[0004]

[Table 1]

As is clear from Table 1, the FRP template using the hard FRP is superior, but in the conventional method for manufacturing a hard FRP template, first, a predetermined uneven pattern is formed on the surface. Manufactures a hard FRP template formed on
Since a reinforcing steel plate was attached to the back side of the steel plate with an adhesive, there were the following problems. Since the hard FRP template has a large flexural modulus and a small elongation, a large pressing force is required to attach the warped hard FRP plate to the steel plate. In order to bond the warped hard FRP template to the steel plate, it is necessary to use an adhesive having a large adhesive force, and it is difficult to select the adhesive. The productivity is poor because it is necessary to perform the surface grinding treatment work of the steel plates for joining the hard FRP template, and further the work of uniformly applying the adhesive agent thereon. If the coating thickness of the adhesive is uneven, the thickness of the FRP template, which is a product, will vary. Therefore, it is necessary to work with care so that this does not occur. Since it is adhered to the steel sheet with an adhesive, a curing period for the adhesive is required, which increases the waiting work time and reduces productivity. Therefore, FRP using hard FRP
Although the template has a service life of 20 to 30 times as compared with the FRP template manufactured by using the soft FRP, it is not used much in practice at present. The present invention has been made in view of such circumstances, and has a long service life.
Furthermore, it is an object of the present invention to provide a method for manufacturing a fiber-reinforced plastic template in which the conventional bonding work can be omitted and the manufacturing process can be simplified.

[0006]

According to the present invention, there is provided a semiconductor device comprising:
The method for producing a steel plate reinforced fiber reinforced plastic template described is, after applying a hard fiber reinforced plastic flat plate mold on a master mold having an uneven pattern formed on its surface, curing the surface resin of the fiber reinforced plastic flat plate mold. Before that, put a reinforcing steel plate having a predetermined thickness on the joint surface and having a large number of joint holes formed, and cure the resin on the surface of the fiber-reinforced plastic flat plate mold in a state where the resin penetrates into the joint holes. ing. In the method for manufacturing a steel plate reinforced fiber reinforced plastic template according to claim 2, in the method according to claim 1, a means for preventing the resin that has invaded and hardened is formed in the joint hole. Here, the means for preventing the resin that has entered and hardened from coming off may be a taper hole whose diameter is increased on the upper surface side, or may be a screw hole in some cases. The method for producing a steel plate reinforced fiber reinforced plastic template according to claim 3 is the method according to claim 1 or 2, wherein
Before the resin is hardened, a hook-shaped hook is inserted into the joint hole and a part of the reinforcing fiber at the lower part is pulled out, and then the resin is hardened. Here, the reinforcing fiber means a roving cloth woven from glass fiber or a string made of glass fiber, and it is preferable that the roving cloth is drawn out by the hook. The method for producing a steel plate reinforced fiber reinforced plastic template according to claim 4 is the method according to claim 1.
The method according to any one of 1 to 3, wherein the reinforcing steel plate is pushed in so that the steel plate-reinforced fiber-reinforced plastic template has a predetermined thickness dimension, and unnecessary excess resin is allowed to overflow and cured. ing.

[0007]

In the method for manufacturing a steel plate reinforced fiber reinforced plastic template according to any one of claims 1 to 4, a fiber reinforced plastic flat plate mold is constructed on a master mold, and the bonding surface is a primer before the surface resin is cured. A reinforcing steel plate that has been processed and has a large number of joint holes formed thereon is placed, and since the resin on the surface of the fiber-reinforced plastic flat plate mold is cured while it has entered the joint holes, Bonding of reinforcing steel plates and resin hardening of fiber reinforced plastic flat plate type can be performed at the same time. Further, since the deformation of the fiber reinforced plastic flat plate type due to the resin shrinkage is corrected by the reinforcing steel plate joined to the surface, the steel plate reinforced FRP template with less warpage is obtained. A large number of joint holes are formed in the reinforcing steel plate, and the resin on the surface of the fiber-reinforced plastic flat plate mold is cured in such a state that the resin penetrates into the joint holes. The bondability with Particularly, in the steel plate reinforced fiber reinforced plastic template according to claim 2, since means for preventing the resin that has entered the respective joint holes is formed,
The bondability between the reinforcing steel plate and the fiber-reinforced plastic flat plate mold is further improved, whereby the deformation of the fiber-reinforced plastic flat plate mold is restrained by the reinforcing steel plate. Claim 3
In the steel plate reinforced fiber reinforced plastic template described, before the resin hardening of the fiber reinforced plastic flat plate type, the hook-like hook is inserted from the joint hole and part of the reinforcing fiber at the bottom is pulled out, so it enters the joint hole. The resin also becomes a fiber reinforced plastic, and the joint strength between the reinforcing steel plate and the fiber reinforced plastic flat plate mold is improved. And claim 4
In the steel plate reinforced fiber reinforced plastic template described, the reinforcing steel plate is pushed in to adjust the thickness of the steel plate reinforced fiber reinforced plastic template, so that the thickness can be easily adjusted.

[0008]

Therefore, the steel plate reinforced fiber reinforced plastic template according to claims 1 to 4 is capable of firmly joining a hard fiber reinforced plastic flat plate type and a reinforcing steel plate of the hard fiber reinforced plastic flat plate type. Since the resin is hardened and joined to the reinforcing steel plate at the same time, the manufacturing time can be shortened. As a result, it is possible to manufacture a hard steel plate reinforced fiber reinforced plastic template which is used a lot of times with high dimensional accuracy. Particularly, in the steel plate reinforced fiber reinforced plastic template according to claims 2 and 3, since the joining property between the reinforcing steel plate and the fiber reinforced plastic flat plate type is remarkably increased, the reinforcing steel plate is changed to the fiber reinforced plastic flat plate type. No peeling occurs. Further, in the steel plate reinforced fiber reinforced plastic template according to the fourth aspect, since the dimensional accuracy is good, it is possible to stably manufacture the exterior material having good dimensional accuracy.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Next, referring to the attached drawings, an embodiment in which the present invention is embodied will be described to provide an understanding of the present invention. FIG. 1 is an explanatory view of a method for manufacturing a steel plate reinforced fiber reinforced plastic template according to an embodiment of the present invention, FIGS. 2A and 2B are plan views of a glass mat and a roving cloth, respectively. FIG. 3 is a plan view of a reinforcing steel plate, FIGS. 4A and 4B are cross-sectional views thereof, and FIG. 5 is a cross-sectional view showing a method for manufacturing a steel plate-reinforced fiber-reinforced plastic template.

As shown in FIGS. 1 and 5, a mold release agent is applied in a master mold 11 around which a frame 10 having a predetermined height is provided, and a gel coat resin 12 of 0.4 to 0 is applied thereon. .6m
Apply to a thickness of m and dry. Next, a polyester resin is put in, and as shown in FIG. 2A, a glass mat 13 made of a non-woven fabric made of glass fiber (an example of a reinforcing fiber) is put on the polyester resin and pressed by a roller from above. The glass mat 13 is impregnated with the polyester resin. Then, while further adding a polyester resin, a roving cloth 14 woven with a glass fiber string as shown in FIG. 2 (B) is added, and the polyester resin is impregnated into the roving cloth 14, and the same steps are repeated thereafter to reinforce the fiber having a predetermined thickness. A plastic plate mold 15 is made.

After the uppermost roving cloth 14 is pasted, the polyester resin is sufficiently applied to the surface layer to be discarded resin. Next, a reinforcing steel plate 1 as shown in FIG.
6 is prepared and placed on the fiber-reinforced plastic flat plate mold 15. The reinforcing steel plate 16 has a large number of FIG.
As shown in FIG. 5, a large number of joining holes 17 are formed, which are tapered holes having an enlarged diameter, which is an example of the retaining means, and the joining surface (back surface) thereof is treated with a primer.

The reinforcing steel plate 16 is placed on the uncured fiber reinforced plastic flat plate mold 15 of polyester resin, and the hook-shaped hook is inserted into the joining hole 17 from above with the resin on the surface being lifted from the joining hole 17. Insert and pull out the roving cloth 14. Next, as shown in FIG. 5, using a press or a weight, the reinforcing steel plate 16 is pressed, the thickness of the master mold is A, and the final finishing dimension of the steel plate reinforced fiber-reinforced plastic template 18 is B. The dimension C from the surface plate 19 to the surface position of the reinforcing steel plate 16 is (A + B). As a result, excess resin overflows from the joint holes 17 of the frame body 10 and the reinforcing steel plate 16. In addition, 20 shows a press (upper mold) or a weight.

In this state, the polyester resin is left to cure to remove the resin overflowing from the surface of the joint hole 17 and other excess resin, and a steel plate reinforced fiber reinforced plastic template 18 made of a hard resin is used. Is completed.

In the above-described embodiment, the joining hole 17 is a tapered hole which is an example of the retaining means, but FIG.
As shown in (B), a screw hole 21 may be used. Although a part of the roving cloth is pulled out from the joining hole, another reinforcing fiber, metal wire or the like is added to the joining hole from above by a hook or the like to form the fiber-reinforced plastic flat plate type 1.
It is also possible to insert the resin in the joint 5 and to connect the resin in the joint hole and the main body of the fiber-reinforced plastic flat plate mold 15. Although glass fiber is used as the reinforcing fiber, the present invention can be applied to carbon fiber or synthetic resin fiber in some cases.

[Brief description of drawings]

FIG. 1 is an explanatory view of a method for manufacturing a steel plate reinforced fiber reinforced plastic template according to an embodiment of the present invention.

2A and 2B are plan views of a glass mat and a roving cloth, respectively.

FIG. 3 is a plan view of a reinforcing steel plate.

4A and 4B are cross-sectional views thereof.

FIG. 5 is a cross-sectional view showing a method for manufacturing a steel plate reinforced fiber reinforced plastic template.

[Explanation of symbols]

10 frame body 11 master type 12 gel coat resin 13 glass mat 14 roving cloth 15 fiber reinforced plastic flat plate type 16 reinforcing steel plate 17 joining hole 18 steel plate reinforced fiber reinforced plastic template 19 surface plate 20 press or weight 21 screw hole

Claims (4)

[Claims] 1. A bonding surface is subjected to a primer treatment after a hard fiber-reinforced plastic flat plate mold is applied on a master mold having an uneven pattern formed on its surface and before the surface resin of the fiber-reinforced plastic flat plate mold is cured. Further, a reinforcing steel plate having a predetermined thickness and having a large number of joining holes formed thereon is placed, and the resin on the surface of the fiber-reinforced plastic flat plate mold is cured in a state where the resin penetrates into the joining holes. Manufacturing method of plastic template. 2. The method for manufacturing a steel plate reinforced fiber reinforced plastic template according to claim 1, wherein a means for preventing the resin that has penetrated and hardened is formed in the joint hole. 3. The steel plate reinforced fiber reinforced according to claim 1, wherein before the resin is hardened, a hook is inserted into the joint hole and a part of the reinforcing fiber at the lower part is pulled out, and then the resin is hardened. Manufacturing method of plastic template. 4. The steel plate-reinforcing fiber-reinforced plastic template is pressed so that the reinforcing steel plate has a predetermined thickness dimension, and excess resin discarded is allowed to overflow and hardened. The method for producing a steel plate reinforced fiber reinforced plastic template according to item 1.