JPH0242444Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a sound-insulating decorative board used as an interior wall board for a house, especially.

(Prior Art and Purpose/Structure of the Present Invention) Interior wall boards for general houses are those made of plywood, which is coated with a color or a pattern printed on it after being subjected to an optional base treatment as necessary. Sheet-like materials such as paper, cloth, and synthetic resin sheets on which patterns have been printed are pasted together with an adhesive.

However, the 3-6 mm thick plywood used has an areal density of 1.5-3 Kg/m ² and its own sound insulation properties are low.
It was not possible to achieve a satisfactory sound insulation effect by simply adding layers or installing soundproof curtains.

One way to increase the sound insulation effect is to increase the areal density of the material and reduce the rigidity of the material.One way to increase the areal density of the material is to create a composite plywood made by pasting plywood and a lead sheet with a high areal density. is provided.

However, the lead sheet itself is expensive and the composite plywood is expensive, so it is not used in general houses, but is used in some cases as wall material for X-ray rooms in hospitals, etc., which require radiation shielding effects rather than sound insulation effects. It's nothing more than that.

In recent years, as an alternative to composite plywood using expensive lead sheets, attempts have been made to increase the areal density of the material and reduce its rigidity, for example, in JP-A-59-
As shown in No. 224743, sound insulating sheets made of PVC resin mixed with iron powder, iron oxide, etc. have come to be provided.

However, because the amount of metal powder mixed in is limited due to the strength of the sound insulation sheet itself, we cannot expect much of a sound insulation effect due to the increase in surface density, and the coincidence effect due only to the decrease in rigidity is shifted to the high frequency side. It is aimed at effectiveness.

In addition, when installing the base sound insulation sheet, it is attached and fixed to the base structural members such as the pillars, gateposts, and bell frames of the house using nails or staples, and then the base sheet is covered with a base plywood or optional decorative material as in the past. This is done by pasting plywood, which has drawbacks such as being time-consuming (the heavy sheet requires two steps and is difficult to install by one person).

The purpose of the present invention is to solve the above-mentioned problems with the sound insulation properties of conventional interior wall panels. That is, as described below, the present invention provides a sound-insulating decorative board in which at least one side of the plate-like substrate 1 is coated with synthetic resin, latex, or bituminous material;
A sealer mixed with inorganic powder is applied to form the undercoat layer 2, and a heavy material powder with a specific gravity of 4 or more, a synthetic resin or latex, or a bituminous material and an inorganic powder are mixed on the surface of the undercoat layer 2, and further sound insulation is achieved. An optional decorative layer 4 is applied to the surface of the coating layer 3.
By pre-configuring such a sound-insulating decorative board, the present invention makes it possible to form a wall surface with sound-insulating properties by simply attaching the sound-insulating decorative board to the base material. That is. Examples of the present invention will be described below.

(Description of Embodiments) Reference numeral 1 denotes a plate-shaped substrate, which may be a wooden board, plywood, fiberboard, particle board, gypsum board, cement board, silicon board, asbestos board, or the like.

A synthetic resin, latex, or a sealer made of a mixture of bituminous material and inorganic powder is applied to at least one surface of the plate-shaped substrate 1 to form an undercoat layer 2.

Synthetic resins, latexes or bituminous materials include acrylic resin, urethane resin, epoxy resin, vinyl chloride resin, vinyl acetate resin, ethylene-vinyl acid resin, alkyd resin, rubber latex, MBR,
Using SBR, NBR, asphalt tar, etc.
Preferably, an emulsion type is used.

In addition, inorganic powders include cement, slag,
Gypsum, charcoal, talc, clay, etc. are used.

It is preferable to use an inorganic powder with a specific gravity of 1 or more, and when used as a sound-insulating decorative board, the undercoat layer 2 can be formed without reducing its surface density.

Synthetic resins, latex, bituminous materials, inorganic powders, etc. may be used alone or in combination.

By forming the undercoat layer 2, the plate-like substrate 1
It smoothes the surface of the substrate, improves the adhesion of the sound-insulating paint that will be applied later, and also suppresses the outflow of extracted components such as scum due to moisture from the plate-shaped substrate.

A sound insulating paint made of a mixture of heavy material powder with a specific gravity of 4 or more, synthetic resin or latex, or bituminous material and inorganic powder is applied to the surface of the undercoat layer 2,
A sound insulating coating layer 3 is formed.

Heavy substance powders with a specific gravity of 4 or more include iron powder, iron sand powder, lead powder, lead alloy powder, zinc powder, tin, copper powder, iron oxide, copper oxide, zinc oxide, lead oxide, titanium oxide, antimony oxide, and oxide. Bismuth, cadmium oxide, tungsten oxide, tin oxide, tantalum oxide, manganese oxide, molybdenum oxide, silver oxide, zirconium oxide, lead sulfide, manganese sulfide, iron sulfide, zinc sulfide,
Molybdenum sulfide, antimony sulfide, cadmium sulfide, tin sulfide, copper sulfide, bismuth sulfide, cobalt sulfide, mercury sulfide, silver sulfide, barium sulfate, zincite, galena, valentinite, battelite, cuprite, hausmannite , pyrrhotite meteorite minerals troilite, chalcocite, howellite, molybdenite, pyrite, glenite, azurite, cobalt sulfide, sphalerite, wurtzite, brownite, pyroluthite, barite, cassiterite These are metals, metal oxides, and oxide powders, such as metals, metal oxides, and oxide powders, and these are used alone or in combination.

The heavy material powder preferably has a particle size of 2 mm or less, and a magnetic material such as iron powder or iron sand powder is used. Moreover, a scaly material may be used. Particle size is 2
If it is larger than mm, it will be difficult to mix uniformly when mixing with synthetic resin, latex, or bituminous material.

Furthermore, the rigidity of the sound insulating coating layer 3 increases, and the coincidence effect shifts to the low frequency side, so that the sound insulating effect for low frequencies is improved. Examples of synthetic resins, latexes or bituminous materials include acrylic resins, urethane resins, epoxy resins, vinyl chloride resins, vinyl acetate resins, alkyd resins, rubber latexes,
MBR, SBR, NBR, asphalt, tar, etc. are used, preferably an emulsion type.
Inorganic powders include cement, slada, gypsum,
Use charcoal, talc, clay, etc.

It is preferable to use an inorganic powder with a specific gravity of 1 or more, and when used as a sound-insulating decorative board, the sound-insulating coating layer 3 can be formed without reducing its surface density. Synthetic resins, latex, bituminous materials, inorganic powders, etc. may be used alone or in combination.

It is preferable that the inorganic powder adjusts the structural viscosity of the sound-insulating paint and improves the transferability to the two surfaces of the undercoat layer of the plate-shaped substrate. In particular, when coating with a roll coater, spreader, etc., the transferability from the coating roll surface is improved, allowing thick coating of the sound-insulating coating.

A synthetic resin, latex, or bituminous material is used for the sound-insulating paint, and is firmly fixed and integrated with the synthetic resin, latex, or bituminous material forming the undercoat layer 2 by the action of intermolecular attraction.

The sound-insulating coating layer 3 may be formed on both sides of the plate-like substrate, if necessary.

An optional decorative layer 4 is formed on the surface of the sound-insulating coating layer 3. As an example of the decorative layer 4, as shown in FIG. 2, a colored paint is applied to the surface of the sound-insulating coating layer 3 to form an intermediate coating layer 10. An arbitrary pattern 11 is printed on the surface of the intermediate coating layer 10 in the printing order. Further, if necessary, after the pattern 11 is printed and formed, a top coat is applied to form a top coat layer 12.

As another example of the decorative layer 4, as shown in FIG. 3, an adhesive 14 is applied to the surface of the sound-insulating coating layer 3, and then a decorative sheet 15 is adhered to the surface.

As the decorative sheet 15, a decorative paper whose surface is printed with a pattern or colored, a decorative cloth, a decorative synthetic resin sheet, etc. are used. In this way, a sound-insulating decorative board having the sound-insulating coating layer 3 and the decorative layer 4 formed on the surface is obtained.

The sound insulating decorative board has a large surface density and a reduced rigidity, improving the sound insulating property based on the mass law, and shifting the coincidence effect to the high frequency side, further improving the sound insulating effect. Furthermore, since a decorative layer is formed on the surface, by applying the sound-insulating decorative board, an interior wall surface with sound-insulating properties can be formed.

If the heavy substance powder mixed in the sound insulation coating layer 3 is a magnetic material, exhibits can be fixed to the sound insulation decorative board surface installed as an interior wall surface using magnet pieces, and it can be effectively used in general households. Of course,
It is effectively used as walls of public facilities such as schools and gathering places, and the sound insulation decorative board has a great sound insulation effect.

(Operations and Effects of the Present Invention) Since the sound-insulating coating layer 3 is incorporated and the surface decorative layer 4 is formed, an interior wall material having both sound-insulating properties and cosmetic properties can be obtained. Since the substrate 1 and the sound-insulating coating film 3 are reliably integrated via the undercoat layer 2, the provision of the sound-insulating coating layer 3 does not cause weakening of the structure. Interior walls can be formed with just one step of installing sound-insulating decorative panels.

The sound-insulating decorative board of the present invention has a large surface density,
Moreover, the rigidity is reduced, the sound insulation based on the mass law is improved, the coincidence effect is shifted to the high frequency side, and the sound insulation effect is further improved.

Since the inorganic powder is mixed into the sound insulation coating layer 3, the transfer property from the application roll is good, and the sound insulation coating layer 3 can be applied thickly.

[Brief explanation of the drawing]

FIG. 1: A skeleton sectional view of the sound insulating decorative board of the present invention, FIG. 2: A sectional view of the first embodiment, and FIG. 3: A sectional view of the second embodiment. DESCRIPTION OF SYMBOLS 1... Substrate, 2... Undercoat layer, 3... Sound insulation coating layer, 4... Decorative layer, 10... Intermediate coating layer, 11...
Pattern pattern, 12...Top coat layer, 14...Adhesive, 1
5... Cosmetic sheet.

Claims (1)

[Claims for Utility Model Registration] (1) A sealer made of a mixture of synthetic resin, latex, or bituminous material and inorganic powder is applied to at least one side of the plate-shaped substrate 1 to form an undercoat layer 2, and further the surface A sound insulating paint made by mixing heavy material powder with a specific gravity of 4 or more, synthetic resin, latex, or bituminous material, and inorganic powder is applied to the surface to form a sound insulating coating layer 3, and then a sound insulating coating layer 3 is formed.
A sound-insulating decorative board characterized in that an optional decorative layer 4 is applied to the surface of the board. (2) The sound insulating decorative board according to claim 1, which uses a magnetic material with a particle size of 2 mm or less as the heavy material powder with a specific gravity of 4 or more. (3) The sound-insulating decorative board according to claim 1, which has a decorative layer 4 on which a pattern is printed after subjecting the surface of the sound-insulating coating layer 3 to an arbitrary base treatment. (4) The sound-insulating decorative board according to claim 1, which has a decorative sheet-like material 15 attached to the surface of the sound-insulating coating layer 3 via an adhesive.