JPH0663333B2 - Surface finishing material for trowel coating and its manufacturing method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a wall finishing material for trowel coating, which is a material for plastering, and a method for producing the same, and is capable of expressing the texture of simple Japanese paper on the trowel-finished surface. .

Conventional technology In order to create the texture of traditional Japanese paper, it is common to use processed wallpaper by laminating it.

Japanese Examined Patent Publication No. 42-14313 describes a method for producing an indoor wall surface finish material in which a fiber having a fiber length of 1 to 20 mm is formed into a pill shape (pillball) to enhance the soundproof effect of the wall surface. Further, JP-B-61-8857 discloses an overcoat composition comprising an organic fiber, an inorganic material, PVA, and a polyalcohol polyalkenyl ether-unsaturated carboxylic acid compound copolymer, which uses long fibers. It is suggested that these are used only as Susa to form the finishing surface of Kyo and Juraku walls.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In conventionally used trowel coating wall materials, the fibrous substances are intertwined with each other, so that the fibrous substances cannot be exposed on the wall surface in the original shape.

Further, when a wallpaper is used to give the texture of Japanese paper, there is a limit in size, and the aesthetics of the finished surface is significantly impaired by the seams that are stuck together.

Means for Solving the Problems The present inventors, as a result of repeating various test studies in view of such circumstances, contain long fibers having a fiber length of 20 mm to 150 mm, colored soil, an aqueous paste and water as essential components. And color soil 100
The paste-like trowel coating wall surface finishing material characterized in that the long fibers are uniformly mixed in a proportion of 5 to 50 parts by weight with respect to parts by weight, and the solid content concentration is in the range of 1 to 40% by weight.
It was found that when troweling, the fibrous substance was dispersed on the wall surface in its original form, and the texture of the Japanese paper was created on the dried wall surface to form a wall surface rich in Japanese-style feeling.

Further, in producing such a composition, the present inventors, in the forward direction and long fibers of 20 mm to 150 mm long fibers, colored soil, aqueous paste, water and other additives added as necessary. Mass production was realized by a method of uniformly blending using a low-speed stirrer that alternately rocks in the opposite direction.

The long fibers used in the present invention include, but are not limited to, mulberry, san tsubaki, goose bark, hemp,
Vegetable fibers such as cotton, animal fibers such as wool, or polyester fibers, acrylic fibers, human silk, glass fibers, and other chemical fibers, and among these, citrus, sanpei, goose bark, and hemp that have a particularly rustic appearance are preferable. . The long fiber is the length of the fiber
If you use those with a diameter of 20 mm to 150 mm, the entanglement of the fibers is relatively small, you can trowel while maintaining the original shape, and you can create the texture of Japanese paper on the wall, but the long fibers or short fibers with a fiber length of less than 20 mm The above-mentioned fiber materials appear only in a silky appearance on the trowel-coated surface, and conversely, long fibers exceeding 150 mm are entangled with each other and spoil the appearance of the wall-finished surface.

In carrying out the present invention, natural fibers such as mulberry, san tsubaki, goose bark, hemp, etc. are soaked in water with a natural material, and caustic soda, sodium carbonate or slaked lime is added to the alkaline chemicals, and the mixture is boiled on high heat and then washed with water. To remove foreign matter other than fibers, leave it for a few days, bleach it, then re-remove the foreign matter, moisten it appropriately, tap it with a pounding rod to an appropriate length, and use other chemicals. The fiber is bleached and then cut into an appropriate length.

The low-speed agitator used in the present invention which alternately repeats swinging in the forward and reverse directions is a rotary cone type agitator, a reciprocating paddle type, as long as it repeatedly moves the mixture to be treated in the forward and reverse directions. A stirrer or any other type may be used, but a planetary mixer that rotates and revolves is preferable. The stirring speed shall be such that the treatment system always maintains a laminar flow in the process of dispersing long fibers in water, and a gentle turbulent flow is used in the process of blending colored soil with low viscosity or an aqueous paste that increases viscosity. Should be.

When using a planetary mixer for dispersion, the mixing blade is rotated by low-speed agitation (rotation: 20-100 rpm, revolution: 5-50 rpm) to periodically perform forward rotation and reverse rotation. In this case, the fibers are entangled with each other only by stirring in a fixed direction, so that uniform dispersion is impossible. The forward and reverse rotation cycle is preferably 5 to 60 seconds / cycle. When it is less than 5 seconds / cycle, dispersion becomes insufficient, and when it exceeds 60 seconds cycle, long fibers are entangled with each other and uniform dispersion cannot be achieved.

After uniformly dispersing the long fibers in water, add a low-viscosity colored soil, an aqueous emulsion, etc., and then add an aqueous paste that increases viscosity, clay, etc. to increase the viscosity to 10,000 to 200,000 cps. Obtain a viscous paste troweled wall surface finish material. The clay in this case is used to prevent sedimentation separation of soil or filler and pigment.

As the colored soil, in addition to natural soil, a filler such as calcium carbonate, silica powder, acid clay or magnesium carbonate, which is uniformly mixed with a pigment or dye, can be used.
If the amount of colored soil mixed with long fibers is too low, the appearance of a cotton wall will appear, and if the amount of colored soil mixed with long fibers is too large, the atmosphere of the Kyoto wall will increase, and it will be difficult to form the desired Japanese-style feeling. .

As the aqueous paste used in the present invention, carboxymethyl cellulose, methyl cellulose, hydroxyethyl cellulose, sodium alginate, pectin or powder paste (28 mesh under) or granule paste (10 to 100 mesh) in one or more pastes, particularly granules Glue is suitable because it has good dispersibility and a low dissolution rate, so that it is unlikely to form a paste.

In the practice of the invention, aqueous emulsions such as vinyl acetate, acrylic or acrylic styrene emulsions can be used to increase the adhesive strength of the coating.

The trowel-coated wall surface finishing material of the present invention has a solid content concentration of 1 to 40% by weight.
Based on the degree, it is general to apply about 2-3 kg of solid content per 3.3 m ² .

The wall foundation may be any of concrete, mortar, plaster, dolomite plaster, gypsum board, asbestos slate board, pulp cement board, earth wall and prefabricated wall.

The construction of the present invention is usually carried out in two steps, a step of applying a dedicated undercoat material and a subsequent step of troweling a wall surface finishing material. In this case, the trowel coating of the wall surface finishing material is performed when the dedicated undercoat material is completely dried or when it is in a semi-dried state (a state in which surface water is drained within 3 to 4 hours after coating) to shorten the process.

By using a special undercoating material together, you can adjust the unevenness of the base material
It becomes easy to adjust the water drawing and prevent color unevenness. In addition, the texture of Japanese paper and the satin finish of the undercoating material are mixed to enhance the aesthetics and texture.

In addition to the appearance of Japanese paper, this special undercoat material can also be used in combination with a processed product of straw soup or flowers. In this case, in order to improve the workability at the time of trowel coating, after drying straw soup and flowers, cut it to a length of 5 to 150 mm, crush it if necessary, and roll it with a roller. To use.

In addition, if it is a smooth base, it is possible to perform a one-step finish of directly troweling a wall surface finishing material having a large hiding power.

Operation According to the present invention, the long fibers are 20 mm to 150 mm, and the colored soil 1
Since long fibers are uniformly mixed in a proportion of 5 to 50 parts by weight with respect to 00 parts by weight and thickened with an aqueous paste, the long fibers can be exposed on the wall surface in almost the original shape during trowel coating. It is possible to produce a Japanese paper-like appearance on the wall finishing surface.

In addition, long fibers with a fiber length of 20 mm to 150 mm, colored soil, aqueous paste, water, and other additives to be added as needed are uniformly mixed by a low-speed stirrer that alternately repeats swinging in the forward and reverse directions. As a result, the entanglement of the long fibers can be prevented, and a composition in which the respective components are uniformly dispersed can be formed.

Example 1 Based on the blending ratio shown in Table 1, a dedicated undercoat material was mixed with a mixing base (Hensil mixer) to prepare 2 kg of this dedicated undercoat material.
Then, 2.7 kg of water and 100 g of ethylene vinyl acetate emulsion (trade name: EVA P-3-E Showa High Polymer Co., Ltd.) were added and kneaded well, and troweled on a gypsum board (about 3.3 m ² ). The trowel-coated surface was a very smooth surface without causing eye penetration.

Table 1 Mixing example of dedicated undercoat material Anti-fire stone 6 (-28 mesh) 280 parts Anti-fire stone 7 (-48 mesh) 280 parts Finely pulverized pulp 60 parts Calcium carbonate 290 parts Acid clay 60 parts Aqueous paste (carboxymethyl cellulose) 22 parts Antifungal agent (TMTD: manufactured by Ouchi Shinko Chemical Co., Ltd.) 5 parts Pigment 6 parts Wall finish material is based on the blending ratio shown in Table 2 and uses a planetary mixer (manufactured by Inoue Seisakusho) at 30 rpm and 10 revolutions.
Long fibers are uniformly dispersed in dispersion water under the condition of rpm cycle of 20 seconds / cycle, and then colored soil and an aqueous emulsion are added for coloring, and clay and an aqueous paste are added to increase the viscosity to form a paste-like composition. I made things. After the application of the dedicated undercoat material, when the surface became semi-dried, 2,220 g of the wall finish material was troweled onto the wall surface of 3.3 m ² .

Table 2 Mixing example of wall finishing material Long fiber (pure average fiber length about 70 mm) 18 parts Dispersed water 790 parts Colored soil (natural soil) 80 parts Clay (Sepiolite: Takeda Pharmaceutical Co., Ltd.) 40 parts Aqueous paste (carboxymethylcellulose) 12 Part Aqueous emulsion (Yodozole: Kanebo NSC) 50 parts Preservative (Suraoff: Takeda Pharmaceutical Co., Ltd.) 10 parts As the long fiber, instead of mulberry, Sanpei, goose bark, hemp, polyacrylic fiber, polyester fiber and human silk were used. ,
Regardless of the type of long fiber, the texture of Japanese paper can be expressed and the wall surface is extremely soft.

Example 2 A dedicated undercoating material was prepared by adding a straw sousa and mixing based on the blending ratio shown in Table 3 using a mixer (Hensil mixer). 4 kg of water and acrylic emulsion (product name: Yodozole: Kanebo NSC) 100 for 3 kg of special primer
g, kneaded well, and troweled on a gypsum board (about 3.3 m ² ).

Table 3 Examples of special undercoat materials Anti-fire stone 6 (-28 mesh) 267 parts Anti-fire stone 7 (-48 mesh) 267 parts Finely pulverized pulp 60 parts Calcium carbonate 300 parts Acid clay 60 parts Aqueous paste (carboxymethyl cellulose) 22 parts Antifungal agent (TMTD: manufactured by Ouchi Shinko Kagaku Co., Ltd.) 5 parts Pigment 6 parts Straw straw 13 parts When a semi-dry state is applied and a wall finish finished in the same manner as in Example 1 2,500g of material 3.
I troweled on the wall of 3m ² .

The walls made in this way were mixed with the texture of straw Susa and Japanese paper, and the finish was full of texture.

Example 3 A wall surface finishing material was rotated at 30 rpm and revolved at 10 rpm by using a planetary mixer (manufactured by Inoue Seisakusho) based on the blending ratio shown in Table 4.
Long fibers are uniformly dispersed in dispersion water under the condition of a cycle of 20 seconds / cycle, and then colored soil, anti-firestone and aqueous emulsion are added for coloring, and clay and an aqueous paste are added to increase the viscosity and paste The composition of In this case, to prevent color unevenness,
The amount of colored soil is increased because it is necessary to increase the hiding power. 3,000 g of this wall surface finishing material was directly troweled onto a plasterboard base (about 3.3 m ² ). The wall surface of the one-step finish made in this way was able to express the texture of the earth wall and Japanese paper as well as the wall surface of the two-step finish.

Table 4 Mixing example of wall finishing materials Long fiber (hemp average fiber length about 50 mm) 10 parts Dispersed water 606 parts Colored soil (natural soil) 120 parts Clay (Osmos: Shiraishi Industry Co., Ltd.) 40 parts Anti-fire stone 7 100 parts Water-soluble Paste (carboxymethyl cellulose) 14 parts Aqueous emulsion 100 parts (EVA: Showa High Polymer) Preservative (PCMX: Kitako Chemical) 10 parts Effect of the invention The wall finish of the present invention expresses the texture of Japanese paper by trowel coating. It is possible to finish the wall surface with a rich Japanese feeling.

Claims (4)

[Claims] 1. A long fiber having a fiber length of 20 mm to 150 mm, a colored soil,
Aqueous paste and water were contained as essential components, long fibers were uniformly blended at a ratio of 5 to 50 parts by weight to 100 parts by weight of colored soil, and the solid content concentration was in the range of 1 to 40% by weight. A wall finish material for trowel coating that is characterized by the following. 2. The wall surface finishing material for trowel coating according to claim 1, wherein one or more kinds selected from the group consisting of 杮, 椏, goose bark and hemp are used as the long fibers. 3. Long fibers having a fiber length of 20 mm to 150 mm, colored soil,
A trowel coating wall finish characterized by uniformly mixing an aqueous paste, water, and other additives that are added as necessary using a low-speed agitator that alternately repeats forward and reverse swings. The manufacturing method of wood. 4. The method for producing a wall surface finishing material for trowel coating according to claim 3, wherein long fibers are dispersed in water, and then colored soil having a low viscosity is added, and an aqueous paste which further increases the viscosity is blended.