JPH1036815A - Hardenable joining composition and method of construction of building wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a joining composition which is hardened by a prescribed method for bonding and finishing at a joint between dry plaster wall panels and which is free from a thinning phenomenon when filled into a joint and dried, by blending a specified compound therewith. SOLUTION: This composition is obtained by blending a synthetic resin powder putty, which is to be blended with water at an appropriate ratio to produce a moderate stickiness and cured at room temperature, with sodium hydrogencarbonate preferably at a ratio of 100:(3 to 5). This composition, mixed with water preferably at a ratio of 100:(45 to 55), is kneaded to give a filling material 13 to be filled into a joint T between dry plaster wall panels 5, 6. This composition produces carbon dioxide bubbles inside due to spontaneous drying after being filled and expands in volume so that it is free from a thinning phenomenon. The part outside the joint is removed with a sandpaper to accomplish working.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curable bonding composition for bonding and finishing joints between gypsum dry wall panels and a method for constructing a building wall.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 2, for example, gypsum dry wall panels 5 and 6 are attached to studs (not shown) and joints T between the gypsum dry wall panels 5 and 6 are provided on a wall for construction. It is manufactured by filling a specially formulated compound called a bonding compound and allowing the filled material to air dry at room temperature. There are two types of synthetic resin powder patties for the primer and finish for filling joints between gypsum dry wall panels. The architectural wall is first kneaded with a synthetic resin powder putty for undercoating and water, kneaded with an appropriate viscosity, and the kneaded material is filled into the joint between the gypsum dried wall panels, and it is then cooled at room temperature. In the naturally dried state, the undercoat filler is filled with a synthetic resin-based powder putty for finishing kneaded with water at an appropriate viscosity.

[0003] The synthetic resin powder putty for undercoating and finishing is mainly composed of calcium sulfate hemihydrate (calcined gypsum). As the synthetic resin powder putty for undercoating, there are "GL Super", "GL BIC", and "GL Dyna" (trade names of Yayoi Chemical Industry Co., Ltd.). The company's product names are "High Semena", "Mejitop" and "Quick Dry Big". Further, as synthetic resin powder putty for both undercoating and finishing, there are "New Big Light" and "Scheme V" (trade names) of Yayoi Chemical Industry Co., Ltd.

Conventionally, as shown in FIG. 3 (a), a gypsum drying wall panel 5, 6 is attached to a base material 1 with a fixed substance such as a stud (not shown), and At the seam T between the wall panels 5 and 6, first of all, FIG.
As shown in (b), a mixture 3 of kneaded synthetic resin-based powder putty for undercoating and water is filled, and the mixture is naturally dried at room temperature. When a mixture 3 of a synthetic resin powder putty for undercoating and water is naturally dried at room temperature, the mixed water evaporates, and the substantial volume of the filled filler sinks. ), A synthetic resin-based powder putty for finishing and water were kneaded on a synthetic resin-based powder putty 3 for undercoating which was kneaded with water at the joint T between the gypsum dried wall panels. Fill thing 4 and let it air dry at room temperature. Next, as shown in FIG. 3 (d), a portion of the filler filled in the joint T between the gypsum dried wall panels, which protrudes from the surface of the panel, is polished with sandpaper for construction.

[0005]

In the conventional curable bonding composition, any synthetic resin-based powder putty that has been appropriately kneaded with water is filled and naturally dried. Evaporates and the actual volume of the filled filler shrinks and the surface sinks, a phenomenon called so-called thinning of the filler occurs. When this phenomenon of thinning occurs, there is a problem that the appearance deteriorates unless the settled portion is filled with the curable bonding composition kneaded again and maintained.

[0006] Further, in the conventional wall construction method, when the kneaded mixture of the filled curable bonding composition is air-dried, a phenomenon of so-called filler thinning occurs. There is the inconvenience of having to knead and fill two different types of curable bonding compounds. In addition, if the settlement is severe in the finishing process, there is a problem that the settled portion is further replenished with a finishing filler to improve the appearance.

[0007]

According to the invention of claim 1, there is provided a curable bonding composition of a synthetic resin-based powder putty which is mixed with water in an appropriate ratio to generate an appropriate viscosity and is cured at room temperature. A curable bonding composition comprising sodium hydrogen carbonate.

[0008] A second aspect of the present invention is a curable bonding composition in which sodium bicarbonate is blended with synthetic resin powder putty at a joint between gypsum dried wall panels fixed on a base material of a wall. A method of constructing an architectural wall in which a mixture of water and water is filled and cured at room temperature.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A curable bonding composition is prepared by blending an existing synthetic resin-based powder putty with sodium bicarbonate (NaHC ₃ ). The curable bonding composition of the present invention may be blended with either a conventional undercoat synthetic resin powder putty or a finishing synthetic resin powder putty. First, as shown in FIG. 3 (a), for example, gypsum dry wall panels 5 and 6 are attached to the base material 1 with a fixed material (not shown) such as a stud, and then the building wall shown in FIG. As shown in ()), water is mixed with a curable bonding composition in which sodium bicarbonate (NaHC ₃ ) is mixed with an existing synthetic resin-based powder putty at a joint T between the gypsum dried wall panels 5 and 6, and kneading is performed. Fill the raised material 13 and allow it to air dry at room temperature. Next, as shown in FIG. 3 (c), of the filler at the joint T between the gypsum dried wall panels, the portion protruding from the joint portion is removed with sandpaper, and the construction is performed.

[0010]

Embodiments of the present invention will be described. The mixing ratio of the synthetic resin-based powder putty and sodium hydrogen carbonate (NaHC ₃ ) is set to the conventional synthetic resin-based powder putty 100: sodium hydrogen carbonate (NaHC ₃ ) 3 to 5, and the setting type compound 100: water The mixture is mixed at a ratio of 45 to 55, and the mixture is kneaded to obtain a filler.

Water is added to a curable bonding composition in which sodium bicarbonate (NaHC ₃ ) is blended with a synthetic resin-based powder putty, and a kneaded mixture is filled in a joint T between the gypsum dried wall panels, and the mixture is heated to room temperature. When air-dried, sodium bicarbonate (NaHC ₃ ) undergoes a chemical change, and bubbles of carbon dioxide (CO ₂ ) are generated inside the packing.

[0012] Even if moisture is evaporated and the volume is reduced when the filler is naturally dried at room temperature, the volume of the filler does not decrease due to the generation of bubbles of carbon dioxide gas, and the filler becomes thinner. The phenomenon disappears.

Experimental Example Synthetic resin powder putty 100: Sodium hydrogen carbonate (Na
HC ₃ ) 3 The curable bonding composition blended at a ratio of 3 is mixed at a curable bonding composition 100: water 45 ratio, and the kneaded filler is filled into the joints between the gypsum dry wall panels and naturally allowed at room temperature. When dried, there is almost no sinkage of the joint packing surface,
No crepes due to bubbles of carbon dioxide gas (CO ₂ ) were observed on the surface.

[0014]

According to the first aspect of the present invention, water is mixed with a curable bonding composition in which sodium bicarbonate (NaHC ₃ ) is mixed with a synthetic resin powder putty, and the mixture is kneaded. Even if the joint is filled and air-dried, bubbles of carbon dioxide (CO ₂ ) are generated inside the filler due to the chemical action of sodium hydrogen carbonate (NaHC ₃ ),
The volume of the filling can be expanded, the capacity of the kneaded filling does not decrease, the phenomenon that the filling becomes thin does not occur, and the curing type bonding compound synthetic resin powder of different types of undercoat and finish There is no need to perform the two-step filling operation on the putty. According to the second aspect of the present invention, an architectural wall, for example, a gypsum dry wall panel is attached to a stud, and sodium bicarbonate (NaHC ₃ ) is blended into an existing synthetic resin powder putty at a joint between the gypsum dry wall panels. Water was mixed with the curable bonding composition, and the mixture was filled with the kneaded material, so that the filling process was simple and good-looking walls were constructed without causing the so-called thinning phenomenon. Can be done.

[Brief description of the drawings]

FIG. 1 is a process diagram showing one embodiment of a method for constructing a building wall according to the present invention.

FIG. 2 is a plan view of a building wall.

FIG. 3 is a cross-sectional view taken along the line AA of FIG. 2, and is a process diagram showing one embodiment of a conventional construction wall construction method.

[Explanation of symbols]

T Joint between gypsum dry wall panels 13 Synthetic resin-based putty mixed with sodium bicarbonate (NaHC ₃ ) mixed with water and mixed with water to improve kneading

Claims (2)

[Claims] The present invention is characterized in that sodium bicarbonate is compounded in a curable bonding composition of a synthetic resin-based powder putty which is mixed with water in an appropriate ratio to generate a suitable viscosity and is cured at room temperature. Curable bonding compound. 2. A curable bonding composition in which sodium bicarbonate is blended with synthetic resin powder putty is mixed with water at a joint between the gypsum dried wall panels fixed on the base material of the wall. Method for building walls that are filled with hardened materials and cured at room temperature.