JPH0813640A - Acoustical panel - Google Patents

Abstract

PURPOSE:To simplify structure, to facilitate manufacture, to improve sound- insulating properties and sound-absorbing properties, to obtain an excellent soundproof effect, and to acquire rigidity as a panel and to facilitate machining for usage for the interior-finished wall, partition, ceiling and door of a building and a housing, etc., for an electronic equipment. CONSTITUTION:A hard foamed resin layer is used as a core layer 1. A thin layer, in which inorganic fillers having high specific gravity are mixed into a soft material, is employed as a sound-insulating layer 2. The sound-insulating layers 2 are bonded and stuck on the surface of the core layer 1, thus forming laminated structure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproof panel used for an interior wall of a building, a partition, a ceiling, a door, a housing of electronic equipment, or the like.

[0002]

2. Description of the Related Art Conventionally, as a soundproof panel used for an interior wall of a building, a partition, a ceiling, a door, a housing of an electronic device, etc., the one disclosed in Japanese Patent Publication No. 4-2098, or , Real fair 4-30307
The structure described in Japanese Patent Publication is known.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
The soundproof panel described in Japanese Patent Publication No. 98 has a foamed phenol resin layer provided between a pair of metal plates, and a glass wool layer interposed between the metal plate and the foamed phenol resin layer. Since it is composed by injecting a foamed phenol stock solution and foaming it, the manufacturing process is very complicated, and the metal plate is corroded when the foamed phenol stock solution injected between a pair of metal plates comes into contact with the metal plate. Therefore, the glass wool layer must be provided to prevent the corrosion, and the structure is extremely complicated.

Further, in the structure shown in Japanese Utility Model Publication No. 4-30307, since the gypsum board has the core material to which the lead sheet is adhered, the soundproof panel has an extremely large weight per unit area and is handled. Since the core material is heavy and the construction is not easy, the structure for fixing it to the crosspiece to integrate it with the decorative plate also needs to be complicated and robust, Since glass wool is filled between the plates, the manufacturing process is complicated. In particular, the gypsum board that constitutes the core material has the property of easily propagating vibrations by itself, so even if it has the effect of blocking the airborne sound, the sound insulation effect by its own natural vibration is comparable. It is low.

The present invention solves the above problems of the conventional soundproof panel and has a simple structure.
It is easy to manufacture, has high sound insulation and sound absorption, and has excellent soundproofing effect. Moreover, it has rigidity as a panel, and it can be used for interior walls of buildings, partitions, ceilings, doors,
Another object is to provide a soundproof panel that can be easily processed for use in a housing of electronic equipment.

[0006]

In order to achieve the above object, a soundproof panel according to the present invention is a panel constituting an interior wall of a building, a partition, a ceiling, a door, a housing of an electronic device, or the like. A core layer made of hard foamed resin and a thin sound insulation layer in which a soft material is mixed with an inorganic filler having a high specific gravity, and the sound insulation layer is laminated on the surface of the core layer.

[0007]

The soundproof panel according to the present invention has a laminated structure of a core layer made of hard foamed resin and a thin sound insulating layer in which a soft material is mixed with an inorganic filler having a high specific gravity. By absorbing the sound energy, the core layer provides a soundproofing effect mainly by blocking the sound energy.

Since the core layer and the sound insulation layer have a laminated structure and they are integrated, and the properties of both layers against vibration are different, the synergistic effect of these layers causes a change from the low range to the high range. High soundproof performance over a wide range can be obtained.

Furthermore, since the core layer and the sound insulation layer form a composite wall, a sound energy transmission loss larger than the sum of the masses of the both walls occurs, and a high sound insulation performance is obtained.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 illustrates a soundproof panel according to the present invention. Reference numeral 1 is a core layer, 2 is a sound insulation layer, and the sound insulation layer 2 is attached to both surfaces of the core layer 1 by adhesion, adhesion or fixation, and the core layer 1 and the sound insulation layer 2 have a layered structure.

The core layer 1 is made of hard foam resin. Specifically, thermosetting resins such as polyurethane, epoxy, urea, polyamide, polyvinyl chloride, ABS
It is a hard foamed resin formed by extrusion molding or molding of a thermoplastic resin such as resin, polystyrene, polyethylene or polypropylene. Preferably, the flexural modulus (AS
TM-D-790) is a foamed resin having 700 kg / cm ² or more.

The sound insulation layer 2 is made of a material having a high specific gravity and an inorganic filler mixed in a flexible material having no air permeability. Specifically, based on various rubbers and synthetic resins,
An inorganic filler having a large specific gravity, such as iron powder, lead powder, iron oxide powder, various ferrites, lead oxide powder, barium sulfate powder, or the like, or fiber, is mixed. A sound insulating material having a specific gravity of 1.6 or more is preferable.

According to the soundproof panel of the present invention configured as described above, the core layer 1 made of a hard foam resin,
Thin sound insulation layer 2 made of soft material mixed with high specific gravity inorganic filler
Since it has a laminated structure by adhesion, the structure is simple and manufacturing is easy. In addition, since the soundproof panel has the same structure as a whole, there is no problem even if it is cut into a required size, and construction and processing can be arbitrarily and easily performed.

According to the soundproof panel of the present invention,
Since the core layer 1 made of hard foamed resin and the thin sound insulation layer 2 in which a soft material is mixed with an inorganic filler having a high specific gravity are laminated, the sound insulation layer 2 mainly has a sound insulation effect by absorbing sound energy. Is obtained, and in the core layer 1, a soundproofing effect is obtained mainly by cutting off sound energy, and
Adiabatic effect can also be obtained. Further, the core layer 1 and the sound insulation layer 2 are integrated as a laminated structure by adhesion, and moreover, since the core layer 1 and the sound insulation layer 2 have different peculiar properties to vibration, the synergistic effect of them causes a low frequency range. High soundproofing performance is obtained over a wide range from to high range. Furthermore, since the core layer 1 and the sound insulation layer 2 form a composite wall, the sound insulation panel has high sound insulation performance due to the transmission loss of sound energy exceeding the sum of the mass of both walls. By mixing an electrically conductive high-density inorganic filler into the material forming the sound insulation layer 2, the sound insulation panel has electromagnetic wave shielding properties.

FIG. 2 illustrates an office partition (partition) 3 using the soundproof panel according to the present invention. The partition 3 has a structure in which two soundproof panels are connected in a plane and one soundproof panel is connected in a right angle. 4 is an edge connecting member, each soundproof panel is connected by a required number of edge connecting members 4,
Partition 3 is configured.

In the partition 3, as shown in FIG. 3, a skin material 5 is attached to the surface of the soundproof panel. As the skin material 5, a sheet material having excellent cushioning property such as cloth is used. It should be noted that the soundproof panel 5
By adhering, the effect of absorbing the sound energy by the skin material 5 is added, so that the soundproofing effect is further improved, and the effect of lowering the resonance frequency of the sound in the partitioned space is also obtained. The acoustic environment is improved. .

[0017]

According to the present invention, the structure is simple,
It is easy to manufacture, has high sound insulation and sound absorption, and has excellent soundproofing effect. Moreover, it has rigidity as a panel, and it can be used for interior walls of buildings, partitions, ceilings, doors,
Alternatively, it is possible to obtain a soundproof panel that can be easily processed for use in a housing of an electronic device.

[Brief description of drawings]

FIG. 1 is a perspective view in which a part of a soundproof panel according to the present invention is cut away.

FIG. 2 is a perspective view of a partition using the soundproof panel according to the present invention.

FIG. 3 is a partially enlarged sectional perspective view of the partition shown in FIG.

[Explanation of symbols]

 1 core layer 2 sound insulation layer 3 partition 4 edging connection member 5 skin material

Claims (1)

[Claims] 1. A panel constituting an interior wall of a building, a partition, a ceiling, a door, a housing of an electronic device, or the like, comprising a core layer made of hard foam resin and an inorganic filler having a high specific gravity as a soft material. A soundproof panel comprising a thin sound-insulating layer in which is mixed, and a sound-insulating layer is laminated on the surface of the core layer.