JPH068527U - Sound insulation - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a thin and flexible sound insulating / insulating material that can cope with atypical punching and does not reduce the living space of a house or the like. [Structure] A metal sheet is adhered to the surface of an inorganic fiber layer formed by integrating an inorganic fiber and a fibrous binder resin.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sound insulation material having excellent sound insulation properties, sound absorption properties, and heat insulation properties.

[0002]

[Prior art]

 Conventionally, rock wool, glass wool, etc. have been used to reduce the noise generated inside or outside the heat insulation of facilities such as houses, factories, buildings, etc. and air conditioners, ducts, pipes, fans, etc. Sound absorbing and heat insulating materials using inorganic fibers are widely used. These inorganic fiber sound absorbing / insulating materials are formed by binding inorganic fibers such as rock wool and glass wool with a thermosetting binder resin such as phenol resin or urea resin. For the purpose of adding sound insulation to these inorganic fiber sound absorbing materials and heat insulating materials, there is also provided a lead sheet laminated between layers of inorganic fiber layers and sewn with a metal wire.

[0003]

[Problems to be solved by the device]

 However, since these inorganic fiber sound absorbing materials and heat insulating materials are generally produced in a line such as blast furnace → cotton making machine → binder resin spraying → curing furnace → cutting process → product, the melting rate of raw materials in the blast furnace is It was necessary to manufacture at a line speed corresponding to the above, and it was difficult to manufacture thin articles of 20 mm or less. In addition, thin raw materials are also manufactured by slicing thick original plates manufactured online by secondary processing, but slicing work is difficult for low density products because inorganic fibers are easily dissociated and high density products are used. In addition, since it is molded with a thermosetting binder resin having poor flexibility, it is inevitable that it becomes a hard plate-like body, and it easily breaks, so it is difficult to manufacture thin articles of 10 mm or less in any case. Met. In this way, because it is thick and hard, in the case of equipment such as uneven ducts and pipes, it is necessary to manufacture one that conforms to the shape of the place of use. In the case of buildings, there is a problem that the effective space is narrowed by using thick sound absorbing material. An object of the present invention is to provide a sound insulating and heat insulating material having an arbitrary density which is thin and flexible, and which is excellent in sound insulating property, sound absorbing property and heat insulating property.

[0004]

[Means for Solving the Problems]

 As a result of intensive studies to solve the above-mentioned drawbacks, the present inventor realized that the inorganic fiber bonded with the flexible binder resin and the metal sheet are laminated, and completed the present invention. That is, the present invention is a sound-insulating, sound-insulating and heat-insulating material, characterized by comprising a metal sheet and a fiber layer in which inorganic fibers are integrated with a flexible binder resin, and a metal sheet.

Hereinafter, the present invention will be described in detail. FIG. 1 shows a sound insulation material of the present invention. In the figure, 1 is a fiber layer, 2 is a metal sheet, and 3 is an adhesive for bonding the fiber layer 1 and the metal sheet 2. Examples of the inorganic fibers used in the present invention include rock wool, glass wool, and ceramic fibers. Rock wool, glass wool and ceramic fiber can be used alone, respectively, but by blending them, the strength and heat resistance of the rock wool or glass wool fiber layer can be arbitrarily controlled. Examples of the flexible binder resin include powders, solutions, and emulsions of thermoplastic resins such as vinyl chloride, vinyl acetate, acrylic, styrene, polyolefin, polyester, and nylon that exhibit adhesiveness when heated. More preferably, these are clad / core type heat-sealing fibers that are formed into a fibrous shape and are made of a plurality of thermoplastic resins having different softening temperatures. The blending amount of the flexible binder resin depends on the type of resin, but is preferably 20% or less from the viewpoint of fire resistance.

As a method of integrating these into a fiber layer 1, inorganic fibers and a flexible binder resin are defibrated and mixed, and then heat-molded to form a sheet or felt with a predetermined density and thickness. The one used is used. Alternatively, a wet papermaking method may be used. The inorganic fiber layer 1 can be subjected to needling treatment, if necessary, in order to improve the peel strength after molding rock wool mixed with a flexible binder resin into a sheet shape or a mat shape. By heating at the production stage or after the production, the adhesive force of the binder resin is developed and the inorganic fibers are bonded to each other. Since the fiber layer 1 has a large number of voids inside, the fiber layer 1 has a high sound absorbing property, and since the fibers are intertwined with each other, the fiber layer 1 has a high tensile strength. The density of the fiber layer 1 is 30 to 300 kg / m ³ , preferably 60 to 250 kg / m ³ , and the thickness of the fiber layer 1 is 1 to 30 mm, preferably 2 to 20 mm, and the width and length are optional. Good.

Examples of the metal sheet 2 used in the present invention include iron, stainless steel, titanium, aluminum, copper, lead and the like, but lead is most preferable in consideration of sound insulation characteristics. The thickness of the metal sheet 2 can be appropriately selected depending on the material and flexibility of the metal used, but is preferably 0.01 to 3 mm. The inorganic fiber layer 1 and the metal sheet 2 are laminated and adhered to each other to form a sound insulation / heat insulating material. The adhesive 3 used at this time is composed of the inorganic fiber layer 1 and the metal sheet 2. There is no particular limitation as long as it shows good adhesion results, but from the viewpoint of fire resistance, self-extinguishing and flame-retardant materials are preferable. Specifically, modified silicone-based, chloroprene rubber-based and neoprene rubber-based Are preferred.

The sound-insulating and sound-absorbing material thus obtained has both the sound-insulating property of the metal sheet 2 and the sound-absorbing property of the inorganic fiber layer 1, and moreover, it disintegrates the inorganic fiber. Since the inorganic fibers are bonded to each other with the flexible binder, it is possible to provide a thin and flexible sound insulation material having heat insulating properties and dew condensation preventing properties.

[0009]

【Example】

Example 1 A core-sheath type heat fusion using rock wool (S-fiber, manufactured by Nippon Steel Chemical Co., Ltd.) as a main raw material of an inorganic fiber and using a polyester resin having a different melting point as a flexible binder resin. 10% by weight of a synthetic fiber (Belcombi, manufactured by Kanebo Co., Ltd.) was mixed. Then, it was defibrated and mixed using a known defibration device for inorganic fibers. Then, the fiber layer 1 having a density of 180 kg / m ³ and a thickness of 2.5 mm was obtained by performing needling and heat treatment after molding into a sheet shape. Next, a modified silicone adhesive 3 was applied to the surface of a commercially available lead sheet 2 having a thickness of 0.5 mm and adhered to the above inorganic fiber layer 1 to obtain a sound insulating heat insulating material. As a result, the resulting sound insulation material is thin and flexible, but its sound insulation and sound absorption properties are improved compared to conventional products on the market. It was confirmed that it could be dealt with without processing.

[0011]

[Effect of device]

 The present invention is a sound insulating and heat-insulating material characterized by laminating and adhering an inorganic fiber layer in which inorganic fibers are integrated with a flexible binder resin, and a metal sheet, and thus is thin and flexible, In addition, it has the effect of improving sound insulation and sound absorption compared to conventional products made of rock wool, and since it is thin, it can also be used for punching out irregular shapes, etc. Since it does not decrease and is flexible, it has the effect of being able to deal with uneven parts without any processing.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of the present invention.

[Explanation of symbols]

 1 Inorganic fiber layer 2 Metal sheet

Claims (1)

[Scope of utility model registration request] 1. A sound insulating and heat insulating material comprising a metal sheet and a fiber layer in which inorganic fibers are integrated with a flexible binder resin, and the metal sheet is bonded to the fiber sheet.