JPH0462256A - Wall panel - Google Patents

Abstract

PURPOSE:To follow up thermal stresses while keeping a high grade appearance by sticking a plastic molding plate to a base member through an adhesive with elasticity and filling a joint material between these plastic molding plates. CONSTITUTION:A base member 2 is constituted by sticking an asbestos cement calcium silicate plate with an adhesive to a reinforced frame formed by an alminum frame or the like. The plastic resin molding plate 4 is stikcked by use of the adhesive 3 made of ulethane having a Young' modulus lower than 40kg/cm<2>, an elongation percentage higher than 80% on the base member 2. An artificial marble molded to be a tile by a heat press from a molding material such as a bulk molding compound(BMC) is used for the plastic resin molding plate 4 with joints having a specified width. And in this case, silicone sealing materials are used for the joint 5.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a wall panel, and particularly to a wall panel suitable for a bathroom unit or the like.

(Prior Art) Conventionally, wall panels for bathroom units have been manufactured using molded resin plates. This wall panel lO is actually fair 1-4
As described in Japanese Patent No. 2565, bosses, ribs, and flanges are integrally formed on a plane part and the back surface of this plane part, or as shown in FIGS. 5(a) and 6(a).
), a resin molded plate 4 formed into a tile shape is adhered to the surface of the base material 2 with an epoxy adhesive 11,
These joints were formed by filling white cement 12.

(Problem to be Solved by the Invention) By the way, in the former conventional technology, even if the surface has a tile-like joint pattern, the entire wall panel is made of the same material, so it is difficult to create a luxurious design. In addition to not being able to create a dramatic effect, integrally molded panels tend to have thicker wall panels (the larger they become, the more warped and deformed they become, which can cause problems during construction).

In addition, in the latter prior art, when the temperature of the wall panel 10 rises due to hot water or steam, the resin molded plate 4 thermally expands, and compressive force acts on the white cement 12 at the joint, causing joint cracks. At the same time, the expansion and deformation of the resin molded plate 4 is directly transmitted to the base material 2 via the adhesive 11, and the entire wall panel 10 is greatly bent and deformed, causing the base material 2 to crack and the resin molded plate to be damaged. There was a problem that 4 was peeled off from the base material 2 (see FIG. 5(b) and FIG. 6(b)).

Note that there are cases where the resin molded plate 4 is attached to the base material 2 in a butt-like manner without providing a joint, but in this case, the wall panel IO is also warped and the resulting cracks in the base material 2 and the resin This caused the molded plate 4 to peel off.

The present invention has been made in view of these problems, and it is an object of the present invention to provide a wall panel that can follow thermal stress while maintaining a luxurious appearance.

(Means for Solving the Problems) The wall panel of the first invention is characterized in that a resin molded plate is adhered to a base material via an elastic adhesive.

In addition, in the wall panel of the second invention, molded resin plates are attached to the base material via an adhesive having elasticity, and an elastic joint material is filled between these molded resin plates. This is a characteristic feature.

(Function) An adhesive having elasticity on the base material, specifically, a Young's modulus of 40
kg/- or less, a resin molded plate is attached via an adhesive with an elongation rate of 80% or more. As a result, even if the resin molded plate expands due to thermal stress, the adhesive follows and absorbs the deformation, making it possible to prevent deformation of the base material.

In addition, when an elastic joint material is filled in the joint formed between adjacent resin molded plates, even if compressive force is applied to the joint material due to expansion due to thermal stress of the resin molded plates, it will not be affected. It is absorbed by its elasticity and can prevent joint cracking and even cracking of the base material.

(Example) Hereinafter, an example of the wall panel according to the present invention will be described based on the drawings.

The wall panel l includes a base material 2, an elastic adhesive 3 applied on the base material 2, and a plurality of resin molded plates 4 attached via the elastic adhesive 3. It is composed of a joint material 5 filled in a joint portion formed between adjacent resin molded plates 4.4.

Specifically, the base material 2 is constructed by adhering an asbestos cement calcium silicate plate to a reinforcing frame made of an aluminum frame or the like using an adhesive.

Further, the elastic adhesive 3 is a urethane adhesive, which is supplied onto the base material 2 using an extrusion gun (not shown) or the like, and is stretched using a trowel or the like to a thickness of 0.4 mm or more. It is coated with This adhesive 3 is
Young's modulus is 40! -/ci, elongation rate is 109% ψ Further, the resin molded plate 4 is an artificial marble made of molding material such as bulk molding compound (BMC) and molded into a tile by hot pressing, and has a predetermined width. It is attached with a joint.

Furthermore, the joint material 5 is made of silicone sealant.

This wall panel 1 has a Young's modulus of 10,000 kg/csi.

A resin molded plate 4 was attached onto the same base material 2 as in this example using an epoxy adhesive with an elongation rate of 0.02%, and compared with a wall panel formed by filling the joint material 5. That is, a bathroom unit was assembled using both wall panels, the room temperature was maintained at -20°C, and a cycle was performed in which hot water at 80°C was sprayed from above the wall panel for 10 minutes inside the bathroom unit, and then left to cool for 50 minutes. The test was repeated. As a result, in the wall panel 1 of the present invention, no abnormality was observed even after 2000 cycles, whereas in the comparative wall panel, cracks occurred in the base material 2 after 3 cycles.

Next, other modified embodiments will be described. In place of the inorganic board such as the asbestos cement calcium silicate board constituting the base material 2, plywood may be used.

In addition, the elastic adhesive 3 is required to have a Young's modulus and an elongation rate that can absorb the elongation caused by thermal stress of the resin molded plate 4. Specifically, a Young's modulus of 40 kg/aa or less and an elongation rate of 80% or more are required. suitable. In addition to the urethane adhesive, a modified silicone adhesive or a silicone adhesive may be used as long as the above conditions are met. In addition, elastic adhesive wi3
If the thickness of the elastic adhesive is small, it will not be able to absorb the elongation due to thermal expansion of the resin molded plate 4, and the effect will extend to the base material 2, which may lead to deformation of the entire wall panel l. The coating amount of agent 3 is preferably such that the thickness thereof is 0.3 mm or more.

In addition to BMC, thermosetting molding materials such as sheet molding compound (SMC) are used for the resin molded plate 4, and manufacturing methods include hand lay-up method, casting method, and spray amp method. Adopted. Further, the shape is not limited to a square such as a tile, but may be a polygon or a circle.

Furthermore, an uneven shape may be provided to the front and back surfaces for the purpose of improving design and adhesiveness, and a resin coating may be applied to the surface to improve hardness and design.

In addition to silicone sealing, the joint material 5 can use a sealing material made of modified silicone or urethane, and as a result, it absorbs the expansion and contraction of the resin molded plate 4 due to heat and eliminates cracks in the joint area. , deformation of the wall panel l can be reduced.

(Effects of the Invention) As described above, the wall panel of the present invention is formed by adhering a resin molded plate to the base material via an elastic adhesive, so it can create a luxurious feel by using different materials. At the same time, it becomes possible to absorb expansion and deformation of the resin molded plate, prevent deformation of the base material as much as possible, and improve durability.

In addition, when a wall panel is formed by filling elastic joint material between resin molded plates attached to a base material, the compressive force that acts on the joint material due to the expansion of the resin molded plate is due to its elasticity. It is absorbed and relaxed by the material, and does not cause cracks like cement joints, and can also prevent cracks in the base material.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the wall panel of the present invention, and FIG. 1 is a partially omitted perspective view of a bathroom unit 7) assembled using the wall panel, and FIG. 2 is a cross-sectional view of the wall panel. 3 (a) (b) and 4 (a) (b) are cross-sectional views showing the deformation process due to expansion of the resin molded plate constituting the wall panel, and Fig. 5 (a) ( b) and Figure 6(a)
) (b) is a sectional view showing a deformation process accompanying expansion of a molded resin plate constituting a conventional wall panel. Fig. 1 1...Wall panel 3...Elastic adhesive 5...Elastic joint material 2...Base material 4...Resin molded plate

Claims (1)

[Scope of Claims] 1) A wall panel characterized in that a resin molded plate is adhered to a base material via an elastic adhesive. 2) A wall panel characterized in that molded resin plates are adhered to a base material via an adhesive having elasticity, and an elastic joint material is filled between these molded resin plates.