JPH0967844A - Formation of waterproof pan or bathtub and reinforcing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the connecting strength of a metallic reinforcing member to an FRP resin layer and prevent the separation of the member from the layer by providing small holes or slits in the member and, after the FRP resin of the layer is made to enter in the small holes by placing the member on the layer before the FRP resin cures, coating the material with another amount of the FRP resin. SOLUTION: At the time of forming a waterproof pan or bathtub by hand lay-up molding an FRP resin, etc., a metallic frame 8 (reinforcing member) 8 having a plurality of small holes 9 is placed on an FRP resin layer 4 before the layer 4 cures so that the resin of the layer 4 can enter the holes 9 and form large-diameter expanded parts 10 and the parts 10 can work as rivets. A C-shape steel, roll formed section, etc., having continuous grooves 9 in addition to the small holes 9 can be used as the frame 8. Then the FRP layer 4 and the frame 8 are united in one body by forming an overlay layer 5 by coating the frame 8 with the FRP resin. In addition, the compatibility between the FRP layer 4 and frame 8 is improved so as to improve the connecting strength of the frame 8 to the layer 4 and prevent the separation of the frame 8 from the layer 4. This can prevent a creaking floor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a waterproof pan or a bath by a hand lay-up method and its reinforcing structure.

[0002]

2. Description of the Related Art Waterproof pans or bath tubs having a complicated shape, a small quantity, or a large overall shape are not suitable for press molding or cannot be press molded, and thus the hand lay-up method is used. The molding method is adopted. Thus, in the hand lay-up method, it is difficult to integrally form a protruding reinforcing rib on the back surface side of the floor surface of the waterproof pan or bathtub body, and it is usually formed flat.

In such a waterproof pan or bathtub, the floor surface oscillates up and down due to the load of the user as it is, and it becomes uneasy and uncomfortable.
Therefore, usually, a reinforcing tree, a metal angle member, a C-shaped steel or the like is attached to the back surface side for reinforcement.

FIG. 3 shows a conventional technique in which the back side of the waterproof pan 1 is reinforced with a metal frame 2. In the conventional reinforcing structure using the metal frame 2, first, the gel coat layer 3 is applied to the surface of the molding die, the FRP layer 4 is subsequently formed, and before the resin material of the FRP layer 4 is cured, 2 is placed on the FRP layer 4, and the two are bonded by utilizing the self-adhesive action of the resin material. Then, the surface of the metal frame 2 is covered with an FRP material to form an overlay layer 5 to make the appearance of the rear surface side look good, and then the entire surface is cured and cured.

[0005]

However, the FRP layer 4
The resin material and the metal frame 2 are not familiar to each other, and the waterproof pan 1 is generated due to the load of the user.
Each time the floor surface vibrates, the interface peeling progresses at the adhesive interface 6 between the FRP layer 4 and the metal frame 2, and a gap between the two eventually occurs, resulting in a squeaking floor noise. was there.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems and has been improved and removed, and the FRP layer forming the waterproof pan or the bath body and the metallic reinforcing member are not displaced. The present invention provides a method for forming a waterproof pan or bathtub that does not cause floor squeal and a reinforcing structure.

In order to solve the above-mentioned problems, the means of claim 1 adopted by the present invention is to mold a waterproof pan or bath by a hand lay-up method, wherein a gel coat and an FRP resin are formed on the surface of the molding die. Before the resin is cured, a metal reinforcing member having a plurality of holes formed thereon is placed, the resin is allowed to enter the holes to form a retaining member, and then the FRP resin is overlaid. Then, the metal reinforcing member is integrated with the FRP resin by curing and curing.

[0008] The means of claim 2 adopted by the present invention is:
A waterproof pan or bath tub body made of FRP resin, and a metal reinforcing member attached to the back side of the waterproof pan or bath tub body,
A reinforcing structure for a waterproof pan or a bath, comprising an overlay layer of FRP resin covering these, and the metal reinforcing member is fixed by entering an FRP resin material into a hole provided in the reinforcing member. .

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below with reference to the embodiments of the invention shown in the drawings. The same reference numerals as in the conventional case are the same members. 1 and 2 relate to one embodiment of the present invention,
1A to 1C are vertical cross-sectional views showing respective steps in manufacturing the waterproof pan 7, and FIG. 2 is a perspective view showing a frame 8 as a metal reinforcing member.

In this embodiment, first, as shown in FIG. 1A, the gel coat layer 3 is formed on the surface of the mold.
Is formed by coating, and then the FRP layer 4 is formed by spraying up or the like. Then, as shown in FIG.
For example, 50 small holes 9 having a diameter of 5 mm are formed on the adhesive surface side with the layer 4.
Prepare a metal frame 8 with a large number of holes per mm,
As shown in FIG. 1B, this is placed on the resin material of the FRP layer 4 before the resin material is cured.

As a result, the resin material having fluidity before hardening enters the inside of the frame 8 through the small hole 9 and forms an enlarged diameter portion 10 larger than the small hole diameter.
After that, as shown in FIG. 1C, an overlay layer 5 that covers the frame 8 is applied and formed using a FRP resin material, and the whole is cured and cured.

In the waterproof pan 7 thus formed, the FRP layer 4 and the metal frame 8 enter the small hole 9 of the frame 8 in addition to the adhesive force due to the self-adhesive action of the resin material. As a result, the resin material forms the large-diameter portion 10 to form a retaining member, and the FRP layer 4 and the frame 8 are integrated. Therefore, the FRP layer 4 and the frame 8 can be firmly connected because the adhesive force of the resin material and the mechanical connection by the enlarged diameter portion 10 are obtained.

Therefore, the waterproof pan 7 is loaded by the load of the user.
Even if the bending of the history occurs repeatedly on the metal frame 8 and F
There is no interfacial separation with the RP layer 4 and no ringing of the floor. In other words, comfortable use is possible.

By the way, the present invention is not limited to the above-described embodiment, and may be applied to a bathtub other than the waterproof pan 7, for example. The metal frame 8 has a small hole 9
Alternatively, C-shaped steel in which continuous grooves are formed may be used, and it is also possible to use other lightweight shaped steels or metal reinforcing materials such as angle materials. Further, the FRP layer 4 may be brushed in addition to spray-up, and the number of layers is arbitrary.

[0015]

As described above, in the present invention,
The gel coat and FRP resin are laminated on the surface of the mold, and a metal reinforcing member having a plurality of holes is placed before the resin is cured, and the resin is allowed to enter the holes to prevent the resin from coming off. The metal reinforcing member is integrated with the FRP resin by overlaying and curing and curing the FRP resin, so that the metal reinforcing member and the FRP resin material are bonded to each other by the adhesive force of the resin material. The resin material can be connected by mechanical connection with the retaining member formed by penetrating into the hole of the frame, and strong connection is possible. Therefore, even if the waterproof pan vibrates due to repeated history due to use, no interfacial separation occurs between the metal frame and the FRP layer, and floor squeaking does not occur unlike the conventional case.

[Brief description of drawings]

FIG. 1 (a) to FIG. 1 (c) are vertical cross-sectional views showing a process of forming a waterproof pan according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a metal frame according to an embodiment of the present invention.

FIG. 3 is a vertical cross-sectional view showing a conventional waterproof pan reinforcing structure.

[Explanation of symbols]

 3 ... Gel coat layer 4 ... FRP layer 5 ... Overlay layer 7 ... Waterproof pan 8 ... Metal frame 9 ... Small hole 10 ... Large diameter part

Claims (2)

[Claims] 1. A method for forming a waterproof pan or a bath by a hand layup method, wherein a gel coat and an FRP resin are laminated on the surface of a molding die, and a plurality of holes are formed in a metal reinforcing member before the resin is cured. Place the opened one and let the resin penetrate into the hole to form a retainer, and then overlay the FRP resin to cure and cure it so that the metal reinforcing member is integrated with the FRP resin. A method for forming a waterproof pan or bathtub, which is characterized in that 2. A waterproof pan or bath tub body made of FRP resin, a metal reinforcing member adhered to the back side of the waterproof pan or bath tub body, and an FRP resin overlay layer covering the metal and the metal. The reinforcing member made of FRP is a waterproof pan or bath reinforced structure in which a FRP resin material enters and is fixed in a hole provided in the reinforcing member.