JPH0975250A - Method for reinforcing bottom face of tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate processing of a product when a it is abandoned by reinforcing a tank of an FRP molding with the same material and to effectively utilize a waste material and to avoid to generate environmental pollution by performing reinforcement by recycling the waste material. SOLUTION: A reinforcing plate 2 is formed by cast molding of a waste material-mixed resin prepd. by adding and mixing a powder prepd. by grinding resin wastes in which a thermosetting resin such as artificial marble wastes and FRP wastes is a main component in an unsatd. polyester resin as a filler. The reinforcing plate 2 is laminated and integrally sticked on the bottom face of a tank 3 consisting of an FRP molding.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for reinforcing the bottom surface of a tank of an FRP molded article such as a bathtub or a washing room.

[0002]

2. Description of the Related Art Generally, a bathtub is formed of an FRP molded product, but the bottom surface of the bathtub is reinforced in order to strengthen it. Conventionally, when reinforcing the bottom surface of a bathtub, a reinforcement plywood such as a waterproof plywood is laminated on the outer surface of the bottom surface of the bathtub and adhered, and a FRP coating layer is overlaid on the reinforcement plywood to fix the reinforcement plywood. .

[0003]

In the case of the above-mentioned conventional example, since the reinforcing plywood of wood is used to reinforce, it is necessary to separate the resin material and the wood when discarding after the end of the product life. However, there is a problem that the disposal process becomes complicated. The present invention has been made in view of the above-mentioned points, and it is reinforced by a material similar to that of the tank of the FRP molded product to facilitate the disposal of the product at the time of disposal, and the waste material is recycled to be reinforced to recycle the waste material. The challenge is to effectively utilize the pollution and prevent pollution problems.

[0004]

In order to solve the above-mentioned problems, the method of reinforcing the bottom surface of the tank of the present invention is made of artificial marble waste or FR.
P Waste material mixed resin 1 obtained by crushing a resin waste material containing a thermosetting resin as a main component, such as waste material, is added to unsaturated polyester resin as a filler and mixed, and cast-molded to reinforce plate 2
Is formed, and the reinforcing plate 2 is laminated on the bottom surface of the tank 3 of the FRP molded product and bonded and integrated. in this case,
Since the bottom surface of the tank 3 is reinforced by the reinforcing plate 2 made of a resin of the same type as the tank 3 of the FRP molded product, when the product is expired and discarded, it is necessary to separate the wood as in the conventional case. Without this, the disposal processing can be facilitated to reduce the disposal cost of the waste material, and the reinforcing plate 2 can be easily recycled when the waste material is recycled because of the similar material. Further, since the reinforcing plate 2 can be formed by using the waste material, the waste material can be effectively used and the pollution problem can be suppressed.

Further, a waste material mixed resin 1 is formed by adding a crushed product obtained by crushing a resin waste material containing a thermosetting resin such as an artificial marble waste material or an FRP waste material as a main component to an unsaturated polyester resin and mixing the waste material with a waste material. It is also preferable that the waste material mixed resin 1 is poured into the bottom surface of the tank 3 of the FRP molded product, and the waste material mixed resin 1 is heated and cured to form the reinforcing material layer 4. Also in this case, the bottom of the tank 3 is FRP
Since it is reinforced by the reinforcement layer 4 made of the same type of resin as the tank 3 of the molded product, when the product is discarded after the end of its life, it is possible to dispose of it without the need for separating wood as in the conventional case. Processing can be facilitated to reduce waste material processing costs, and the reinforcement layer 4
Can be easily recycled when recycling waste materials for similar materials. Further, since the reinforcing material layer 4 can be formed by using the waste material, the waste material can be effectively utilized and the occurrence of the pollution problem can be suppressed. Further, the step of pouring the waste material mixed resin 1 into the bottom surface of the tank 3 and heating and curing it to form the reinforcing material layer 4 can be simplified.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The crushed product used as the filler for the reinforcing plate 2 is a crushed resin waste material containing a thermosetting resin (mainly unsaturated polyester resin) as a main component such as artificial marble waste material and FRP waste material. Is. As this resin waste material, a waste material generated in a manufacturing process of a factory, a waste material whose product life has passed, or the like is used. When the resin waste material is crushed to form a crushed product, for example, the crushing, the primary crushing, and the secondary crushing are performed in this order. The crushing is about 250 mm square, and the primary crushing is 50 mm.
It is crushed into square pieces and crushed by secondary crushing to 3 to 4 mmφ or less. That is, coarse crushing (250 mm square) → primary crushing (50 mm square) → secondary crushing (3 to 5 mmφ or less)
→ The order is crushed products. The waste material mixed resin 1 is formed by adding the pulverized resin waste material as described above to the unsaturated polyester resin as a filler and mixing them. When the crushed product is mixed with the unsaturated polyester resin, the crushed product is 100 to 250 relative to the unsaturated polyester resin.
It is mixed in a ratio of parts by weight.

Using the waste material mixed resin 1 thus formed, the reinforcing plate 2 is molded as follows. As shown in FIG. 2 (b), the waste material mixed resin 1 is injected into the lower molding die 5 as shown in FIG. 2 (a), and if necessary, is vibrated and defoamed by a vibrator.
As shown in FIG. 2 (c), the upper molding die 6 is set on the lower molding die 5 and is heat-molded and cured in the state of FIG. 2 (d) to form a reinforcing plate as shown in FIG. 2 (e). 2 is formed. The molding of the reinforcing plate 2 will be described more specifically as follows. A waste material mixed resin 1 was formed by mixing a crushed FRP molded product having a diameter of 3 mm or less and an unsaturated polyester resin in a ratio of the following compounding 1.

(Compound 1) Unsaturated polyester 100 parts by weight FRP ground product 100 parts by weight 6% Cobalt naphthenate 0.3 parts by weight 55% MEKPO 1.0 parts by weight The waste material mixed resin 1 of the above formulation 1 is shown in FIG. 2 (b). As shown in (), the mixture was poured into the lower molding die 5 and defoamed by applying vibration with a vibrator. After performing this defoaming, the upper mold 6 is set as shown in FIGS. 2 (c) and (d), and left at room temperature for 30 minutes,
The reinforcing plate 2 was molded by leaving it in an atmosphere of 60 ° C. for 40 minutes, and the reinforcing plate 2 was taken out after the molding.

The bottom plate of the tank 3 is reinforced by the reinforcing plate 2 thus formed as follows. The bath 3 shown in FIG. 1 (a) has a washing space 3a and a bathtub support frame 3b integrally provided, and a separate bathtub 3c can be fitted and attached to the bathtub support frame 3b. The reinforcing plate 2 is arranged along the outer surface of the bottom surface of the washing place 3a of the tank 3, and the reinforcing plate 2 is adhered to the bottom surface with an adhesive if necessary.
The reinforcing plate 2 is attached by coating the FRP coating layer 7 on the reinforcing plate 2 and integrating them. As shown in FIG. 1B, the reinforcing plate 2 can be similarly attached to the bottom surface of the bathtub 3c as well.

In the example of the above embodiment, the waste material mixed resin 1
Although the reinforcing plate 2 is attached to the bottom surface of the tank 3 after the reinforcing plate 2 is molded with, the waste material mixed resin 1 is poured into the bottom surface of the tank 3 to form the reinforcing material layer 4 as follows. It can be reinforced as described above. Also in this case, a crushed product obtained by crushing a resin waste material containing a thermosetting resin (mainly unsaturated polyester resin) as a main component such as an artificial marble waste material or an FRP waste material is used as a filler. This crushed product is also formed in the same manner as described above, for example, it is crushed into about 250 mm square by crushing, crushed into about 50 mm square by primary crushing, and crushed into 3 to 4 mmφ or less by secondary crushing. The waste material mixed resin 1 is formed by adding the pulverized resin waste material as described above to the unsaturated polyester resin as a filler and mixing them. When mixing the crushed product with the unsaturated polyester resin, the crushed product is 100% with respect to the unsaturated polyester resin.
˜250 parts by weight are mixed. Reinforcement using this waste material mixed resin 1 is performed as shown in FIG.
The waste material mixed resin 1 is poured from the container 8 onto the bottom surface of the bath 3c as the tank 3 as shown in FIG. 3 (a), and the waste material mixed resin 1 is smoothed with a spatula 9 as shown in FIG. 3 (b). Then, it is heat-cured and the reinforcing material layer 4 is integrally reinforced on the bottom surface of the bathtub 3c as shown in FIG. 3 (c). The heat curing time is about 60 ° C. for about 30 minutes. Reinforcement layer 4 as described above
Even if the washing space 3a and the bathtub support frame 3b are integrated as shown in FIG. 4, the reinforcing material layer 4 can be similarly formed on the bottom surface of the washing space 3a for reinforcement. Also in the example of such an embodiment, the waste material mixed resin 1 having the above-described formulation 1 is used, the waste material mixed resin 1 is poured onto the bottom surface of the washing place 3a as shown in FIG.
The reinforcing material layer 4 could be integrated by heating at 0 ° C. for 30 minutes to cure.

FIG. 5 shows another embodiment. Also in this example, as in the example shown in FIGS. 3 and 4, the waste material mixed resin 1
The reinforcing material layer 4 is directly molded by. As the bath 3 of this example, a washing space 3a and a bath 3c are integrally formed. The waste material mixed resin 1 is poured into the washing area 3c of the tank 3 and the bottom surface of the bath 3a, leveled with a spatula, and heat-cured to form the reinforcing material layer 4. After forming the reinforcing material layer 4, a fiber mat such as a glass mat is laminated on the reinforcing material layer 4, and a resin is applied by hand layup or spray up to cover the FRP coating layer 7. . The reinforcement by the reinforcing material layer 4 and the coating layer 7 will be specifically described as follows. A waste material mixed resin 1 was formed by mixing a crushed FRP molded product having a diameter of 3 mm or less and an unsaturated polyester resin in the following mixing ratio 2.

(Compound 2) Unsaturated polyester 100 parts by weight FRP crushed product (0 to 3 mmφ) 30 to 100 parts by weight Curing agent 1 to 2 parts by weight This waste material mixed resin 1 is poured into the bottom of the bath 3c or the washing room 3a, Laminate to a thickness of 9 mm, and
The reinforcing material layer 4 was formed by curing for 0 minutes. Next, the coating layer 7 was formed by hand layup using a glass mat having a thickness of 1 mm. The bending strength of the molded product formed with the reinforcing material layer 4 was as strong as 3 to 4 kg / mm ² . By the way, instead of using the reinforcing material layer 4 of the waste material mixed resin 1, the same reinforcing material using plywood is 2.8 Kg / m 2.
m ² .

[0013]

INDUSTRIAL APPLICABILITY As described above, according to the present invention, a resin waste material containing a thermosetting resin as a main component such as an artificial marble waste material or an FRP waste material is crushed and added to an unsaturated polyester resin as a filler and mixed. The waste material mixed resin is cast to form a reinforcing plate, and the reinforcing plate is laminated on the bottom surface of the tank of the FRP molded product to bond and integrate it, so the bottom surface of the tank is a resin of the same system as the tank of the FRP molded product. It is reinforced with the reinforcing plate of the product, and when the product is discarded after its service life has passed, it is possible to easily dispose of the product without the need to separate the wood as in the past. The cost can be reduced, and the reinforcing plate can be easily recycled when recycling the waste material because it is a similar material. Furthermore, the reinforcing plate can be formed by using the waste material, and the waste material can be effectively used. With the occurrence of pollution problems One in which it is possible to suppress.

According to the second aspect of the present invention, an unsaturated polyester resin is filled with a crushed product obtained by crushing a resin waste material containing a thermosetting resin as a main component, such as an artificial marble waste material or an FRP waste material. As the waste material mixed resin is added and mixed as above, the waste material mixed resin is poured into the bottom surface of the tank of the FRP molded product, and the waste material mixed resin is heated and cured to form the reinforcing material layer. It is reinforced by a reinforcing material layer of a resin similar to the tank of the molded product, and when the product is discarded after the end of its life, it is discarded without the need to separate wood as in the past. Can be easily processed to reduce waste material processing costs, and the reinforcement layer can also be easily recycled when recycling the waste material because it is a similar material. In formation In addition, it is possible to effectively use the waste material and suppress the occurrence of pollution problems.Furthermore, a step of pouring the waste material mixed resin into the bottom of the tank and curing it by heating to reinforce it to form a reinforcement layer is performed. It can be simplified.

[Brief description of drawings]

FIG. 1 shows a bottom reinforced tank of the present invention, (a)
(B) is sectional drawing of the example of a different tank.

FIG. 2 is a cross-sectional view showing a step of molding the above reinforcing plate.

FIG. 3 is a cross-sectional view illustrating a step of forming a reinforcing material layer of another example of the above.

FIG. 4 is a cross-sectional view illustrating a state of forming a reinforcing material layer of another example of the above.

FIG. 5 is a sectional view of still another example of the same.

[Explanation of symbols]

 1 Waste material mixed resin 2 Reinforcement plate 3 Tank 4 Reinforcement material layer

Claims (2)

[Claims] 1. A waste resin mixed resin obtained by mixing a pulverized product obtained by pulverizing a resin waste material containing a thermosetting resin as a main component, such as an artificial marble waste material or an FRP waste material, as a filler and mixing the waste material mixed resin. Then, a reinforcing plate is formed, and the reinforcing plate is laminated on the bottom surface of the tank of the FRP molded product to be bonded and integrated, thereby reinforcing the bottom surface of the tank. 2. A waste material mixed resin, which is obtained by crushing a resin waste material containing a thermosetting resin such as an artificial marble waste material or an FRP waste material as a main component and adding the crushed product to an unsaturated polyester resin as a filler to form a waste material mixed resin, A method for reinforcing a bottom surface of a tank, comprising pouring the above-mentioned waste material mixed resin into the bottom surface of the tank of an FRP molded product and heating and curing the waste material mixed resin to form a reinforcing material layer.