JPH04113643U - Laminated soundproof flooring - Google Patents

Abstract

(57) [Summary] (with amendments) [Purpose] To provide an inexpensive flooring material with excellent sound absorption and vibration proofing properties due to the air layer. [Structure] A wooden floor substrate (1) consisting of a wooden decorative board (12), an intermediate sound insulation sheet (13), and a wooden board (11) that make up the floor surface, and a vibration isolating material layer (2) that is the ground side. In the laminated soundproofing flooring (10) with a sound-absorbing and damping material layer (3) interposed between the sound-absorbing and damping material layer,
(3) A large number of synthetic resin filaments with a diameter of 0.5 to 0.5 mm.
This sound-absorbing and vibration-damping material is made of a composite material in which non-woven fabrics (33) (33) are bonded to the front and back of a mesh-like space retaining material (32) with a high porosity, which is formed by irregularly bending and intersecting (31). A large amount of air is interposed in the wood layer (3), and this air layer significantly attenuates vibrations, reducing the transmission of impact vibration sound from the wood flooring substrate (1) to the vibration isolation layer (2). . [Effects] It can significantly attenuate noise in the range of 63 to 2000 Hz generated on the flooring, making it a soundproof flooring that ranks higher in class L-50 according to the floor impact sound level measurement method stipulated in JIS-A-1418. , manufacturing costs can also be reduced.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to soundproof flooring materials for condominiums, etc., and is particularly effective against low-frequency sounds below 250Hz. This article relates to a wood-based soundproof flooring material that effectively damps vibrations.

0002

[Conventional technology]

In hotels and condominiums, the noise of people walking and children jumping, especially in rooms on the upper floors, Noise such as individual sounds generated when moving chairs is a major factor contributing to the deterioration of livability. It becomes. All of the above noises are caused by vibrations, such as people walking or jumping. These vibrations are generated when vibrations are transmitted to the concrete slab. Traditionally, various measures such as laying carpets or rugs have been used to prevent the transmission of sound vibration waves. My husband has been.

0003 On the other hand, in recent years, wooden flooring has become preferred in place of carpets and rugs, and as a result, floor The transmission of impact sound downwards is more pronounced. The sound transmission that occurs on this wooden flooring material In order to weaken the effects of A soundproof flooring material has been proposed that consists of a layer of anti-vibration rubber placed on the underside of plywood layered with a sheet. , has been put into practice. In addition, for the purpose of improving vibration isolation, for example, Needle punching, as seen in Publication No. 8 and Publication No. Flooring materials interposed with nonwoven fabrics or fiber mats have also been proposed.

0004

[Problems that the idea should solve]

As mentioned above, the flooring material with the anti-vibration rubber layer on the bottom surface has an octave band center frequency. Significant sound insulation properties in high-frequency sound ranges where the sound intensity (Hz) is 500Hz or higher. However, there are some difficulties in sound insulation in the relatively low frequency sound range below 500Hz. Ru. In order to achieve a sufficient sound insulation effect in the low frequency sound range, it is necessary to increase the hardness of the anti-vibration rubber layer. This will affect the compressive strength of the floorboard.

[0005] This inconvenience can be improved by increasing the thickness of the anti-vibration rubber layer. However, thickening the anti-vibration rubber layer increases the thickness of the flooring material. If the plywood part is made thinner without changing the thickness of the plywood, there will be an inconvenience that the strength of the floorboard will decrease. Ru. In addition, if a non-woven fabric or fiber mat is simply interposed in the middle layer of the flooring material, the vibration-proofing properties will be improved to a certain extent. However, since the fiber layer is in a compressed state, the amount of air remaining in the fiber layer is small. , the vibration and soundproofing effects of air cannot be expected much. This invention provides a laminated soundproof flooring material with excellent vibration and soundproofing effects due to the presence of a large amount of air. It is something that

[0006]

[Means to solve the problem]

This invention creates many gaps between the flooring substrate on the top side and the vibration isolating material on the bottom side. A sound absorbing and damping material layer is interposed. In other words, the laminated soundproof flooring material of the present invention consists of a wooden floor substrate and a concrete slab. A laminated soundproof floor with a sound absorbing and damping material layer interposed between the ground and the vibration damping material layer located on the ground side. In the material, the sound absorbing and damping material layer is made of a large number of continuous synthetic polymers with a diameter of 0.5 to 1.5 mm. The fabric weight per square meter is applied to the front and back sides of the mesh space retaining material with high porosity consisting of striations. It is characterized by being made of a composite material made by bonding 50 to 200 g of nonwoven fabric. There is.

[0007] The above wooden floor substrate is made up of a wooden decorative board and a thick wooden board with an intermediate sound insulating sheet interposed between them. A known sound insulating material that is laminated is applied, and the thickness of the vibration isolating material layer is 2 to 2. It is preferable to use a known elastic material with a diameter of 8 mm.

[0008] The sound absorbing and damping material layer located between the wooden flooring substrate and the vibration isolating material layer is formed by melt-spinning. Each of a large number of continuous synthetic polymer filaments with a diameter of 0.5 to 1.5 mm extruded from a yarn machine Irregularly bent, extending longitudinally while intersecting each other, and at each intersection A net-like body with a high porosity is used as a space-retaining material, and this net-like body is Nonwoven fabric with a basis weight of 50 to 200 g per square meter is adhered to the front and back sides of the space holding material. It is made of composite material.

[0009] Synthetic polymers constituting the above-mentioned network space retaining material include polyolefin, polyamide, A single melt or a composite of two or more thermoplastic synthetic polymers such as polyamide and polyester Melted materials can be applied, and when considering manufacturing costs, they have a relatively low melting point and are inexpensive. Polypropylene fibers are advantageous. In addition, the porosity of the net-like space retaining material is 70 to 9. 5%, the apparent thickness is preferably in the range of 0.5 to 5 mm, and the thickness is smaller than this. If the thickness is too large, it becomes bulky and the floor becomes bulky. This results in an increase in the thickness of the material.

0010 The nonwoven fabric to be attached to the above-mentioned space retaining material has a thickness of 1 to 20 deniers, and has a thickness of 1 square. Needle punch made of thermoplastic synthetic fiber with a basis weight of 50 to 200 g per square meter Non-woven fabrics are preferred.

[0011]

[Effect]

The laminated soundproof flooring material of this invention uses a rubber-based material to absorb the vibrations of impact sounds generated on decorative wood boards. The sound insulation sheet absorbs and attenuates the sound, and the sound absorbing and damping material layer and vibration isolating material are placed below it. The layer greatly absorbs and attenuates vibrations, mitigating the transmission of vibrations to the concrete slab. In other words, the needle-punched nonwoven material is one of the constituent materials of the sound absorbing and damping material layer. The air layer formed by the cloth and net-like space retaining material reduces vibrations between 63 and 2000 Hz. Effectively damps vibrations, especially vibrations between 63 and 125 Hz due to the presence of air. let

0012

【Example】

[Example 1] Figure 1 shows the wooden floor substrate (1) of the laminated soundproof flooring material (10) of the present invention and the vibration-proofing material. A perspective view showing the layer (2) and the sound absorbing and damping material layer (3) in between, and Figure 2 is a sectional view. In this example, the wooden floor substrate (1) is a plywood type wooden board (11) with a thickness of 5 mm. A rubber sound insulation sheet (13) with a thickness of about 1 mm is placed between the decorative wooden board (12) with a thickness of 3 mm and A commercially available soundproof flooring material containing In addition, the vibration isolating material layer (2) contains 50 parts of natural rubber and 50 parts of styrene-butadiene rubber. A flat elastic material with a thickness of about 4 mm that has been mixed and foamed by adding a foaming agent to 2.2 times its original size. was used.

[0013] Then, as shown in Figures 3 and 4, the sound absorbing and damping material layer (3) was A large number of continuous polypropylene filaments (31) are bent irregularly and do not intersect with each other. The porosity is 89%, which extends in the longitudinal direction and is bonded at each intersection. , polyester with a thickness of 10 denier is placed on the front and back of the mesh space retaining material (32) with a thickness of about 1.5 mm. Made of stell resin fiber, the basis weight per square meter is 100g, and the apparent thickness is approximately 1mm. Needle punched nonwoven fabrics (33) (33) are overlapped and formed into a net shape by pressure bonding. The thickness of the adhesive (34) at the striations (31) on the upper and lower surfaces of the space retaining material (32) is approximately 4 ．． Constructed of 0mm composite material.

[0014] As shown in Figure 2, these three layers (1), (2), and (3) are laminated and bonded to form a laminated soundproof floor. Made with wood (10).

[0015] The composite material of the sound absorbing and damping material layer (2) of the present invention can be efficiently manufactured as follows. I can do it. That is, as shown schematically in FIG. Polypropylene is produced using a spinneret (40) with thread holes arranged in two rows in the width direction at equal intervals. The pyrene resin melt is spun into continuous filaments (31) from a spinneret (40) and spun in the direction of the arrow. Let it fall naturally onto the moving conveyor (41). The surface of this carrier (41) is shown in Figure 6. It is equipped with a lattice-like slot (42). The above-mentioned continuum from which this carrier (41) was spun Move it in the direction of the arrow at a speed slower than the falling speed of the filament (31) and place it on the carrier (41). The nonwoven fabric (33) is placed and supplied, and the group of continuous filaments (31) is allowed to fall naturally onto this nonwoven fabric (33). on the carrier (41) while drawing irregular loops in the individual continuous filaments (31) (31). They are stacked on the non-woven fabric (33), and when stacking, the wires (31) (31) are placed at their respective intersections. At the same time, while the accumulated filaments (31) (31) are not solidified, Another non-woven fabric (33) is fed from above onto the integrated filaments (31) (31) while applying pressure. The adhesive force between the net-like space retaining material (32) formed by the group of stripes (31) and the group of stripes allows the spot to be It can be obtained efficiently by adhering (34) to It can be done.

[0016] [Example 2] As a carrier (41) forming the sound absorbing and damping material layer (2) of Example 1 above Using a material with a smooth surface as shown in FIG. 7, the porosity was 8. 4%, about 1.0 mm thick, the non-woven fabric (33) (33) is pressurized on the front and back sides of the mesh space retaining material (32). A composite material that becomes the sound absorbing and damping material layer (2) with a thickness of approximately 3 mm was obtained by adhesion treatment. stop The lever composite material was interposed between the same vibration isolating material layer (1) and the wooden floor substrate layer (3) as in Example 1. Laminated and bonded to create a laminated soundproof flooring material (10).

[0017] As shown in FIG. 8 as Comparative Example 1, a layer of 1 square meter was added to the sound absorbing and damping material layer of Example 1. Laminated soundproof flooring material (50) using one piece of non-woven fabric (35) with a per unit weight of approximately 100g Ta.

[0018] As shown in Fig. 9 as Comparative Example 2, a wooden board (11) was inserted through an intermediate sound insulating sheet (13). On the back side of the same wooden floor substrate (1) as in the above embodiment, on which the wooden decorative board (12) was attached, Sound insulation according to JIS-A-1418 with an embossed anti-vibration rubber layer (61) on the bottom. Obtained flooring material (60) of class L-50.

[0019] Each of the laminated soundproof flooring materials (10) of Examples 1 and 2 above and each of the laminated soundproof flooring materials of Comparative Examples 1 and 2 above Table 1 shows the results of comparing the sound insulation performance with (50) and (60).

[0020]

[Table 1]

[0021] Comparison of sound insulation performance is based on how well the sound of each frequency generated by impact is transmitted downstairs. was measured according to JIS-A-1418.

[0022] Since a part of the sound absorption and damping layer (3) according to the present invention is made of fiber, it will last for a long time. Microorganisms such as mites and mold may occur during use. This problem is due to sound absorption At least a portion of the nonwoven fabric (33) (33) constituting the shaking part (2) has long-term antibacterial and deodorizing ability. It is preferable to use fibers that support copper ions with excellent properties. The amount of copper ion supported on the fiber is , 0.5% by weight or more is desirable, and cellulose is a suitable fiber for carrying copper ions. Examples include stainless steel fibers.

[0023]

[Effect of the idea]

In this way, the laminated soundproof flooring material (10) of the present invention has a connection between the wooden floor substrate (1) that forms the floor surface and the grounding material (10). between the vibration isolating material layer (2) located on the lower side surface and this wooden flooring substrate (1) and the vibration isolating material layer (2) and a sound absorbing and damping material layer (3) interposed in the sound absorbing and damping material layer (3) having a diameter of 0.5 A large number of continuous synthetic polymer filaments (31) of ~1.5 mm are each bent irregularly and intersect with each other. A gap that extends in the longitudinal direction while intersecting each other and is bonded at each intersection. The front and back sides of the mesh space retaining material (32) with a high ratio are 50 to 200 per square meter. It is made of a composite material made by gluing nonwoven fabrics (33) (33), and has sound absorption and control properties. Since a large amount of air is retained in the vibration material layer (3) due to the space retaining material (32), it is necessary to install it. The vibration of the impact sound generated on the wooden decorative board (12) of the flooring material (10) is caused by the vibration of the wooden floor substrate layer (1). After the sound is absorbed and attenuated by a rubber-based intermediate sound insulation sheet (13), it is placed below it. Due to the air layer formed by the nonwoven fabric (33) (33) of the sound absorbing and damping material layer (3) and the mesh space retaining material (32) The vibration is further absorbed and damped, and then the vibration is further absorbed in the vibration isolating material layer (2) placed below The effect of absorbing and attenuating vibrations and greatly reducing the transmission of vibrations to the concrete slab demonstrate.

[0024] That is, needle-punched nonwoven fabric (33) (3 The air layer formed by 3) and the space retaining material (32) damps vibrations between 63 and 2000Hz. It is particularly useful for significantly attenuating noise between 63 and 2000 Hz due to the presence of air. Demonstrates excellent soundproofing properties. Furthermore, the composite material of the sound absorbing and damping material layer (3) is as described in the examples. It can be efficiently obtained without using adhesives, and has excellent soundproofing properties. It is possible to provide flooring materials at low cost.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view showing the laminated soundproof flooring material of the present invention layer by layer.

FIG. 2 is a sectional view of the laminated soundproof flooring material of the present invention.

FIG. 3 is a partially cutaway perspective view of the composite material used for the sound absorbing and damping material layer.

FIG. 4 is a cross-sectional view of a composite material used for the sound absorbing and damping material layer.

FIG. 5 is a side view schematically showing the manufacturing process of the composite material.

6 is a partial perspective view illustrating the surface structure of the carrier shown in FIG. 5. FIG.

7 is a partial perspective view showing another aspect of the surface structure of the carrier shown in FIG. 5. FIG.

FIG. 8 is a cross-sectional view showing the laminated state of the flooring material of Comparative Example 1.

FIG. 9 is a sectional view of a soundproof flooring material of Comparative Example 2.

[Explanation of symbols]

1 Wooden floor substrate 2 Vibration isolation material layer 3 Sound absorbing and damping material layer 10 Laminated soundproof flooring 11 Wooden board 12 Wood decorative board 13 Intermediate sound insulation sheet 31 Continuous line 32 Space retaining material 33 Non-woven fabric

Claims (2)

[Scope of utility model registration request] Claim 1: A system consisting of a wooden floor substrate serving as a floor surface, a vibration isolating material layer located on the lower surface of the ground side, and a sound absorbing and damping layer interposed between the wooden floor substrate and the vibration isolating material layer. The sound absorbing and damping layer has a plurality of continuous synthetic polymer filaments each having a diameter of 0.5 to 1.5 mm, each of which extends in the longitudinal direction while irregularly bending and intersecting with each other, and at each intersection. A laminated soundproof flooring material characterized in that it is a composite material in which nonwoven fabric having a basis weight of 50 to 200 g per square meter is adhered to the front and back sides of a bonded net-like space holding material with a high porosity. 2. The laminated soundproof flooring material according to claim 1, wherein at least a portion of the nonwoven fabric of the sound absorbing and damping layer is made of fibers carrying copper ions.