JPH0213656A - Sound insulating floor structure - Google Patents

Abstract

PURPOSE:To reduce the generation of floor impact noise by a method wherein a multilayer structure formed by a surface finishing material and a stereo neticulate structure is laminated to a backing material formed such that a board is laid on a plurality of support legs. CONSTITUTION:A backing material 1 is formed such that a wood system board 4 formed by plywood is nailed to a substance formed by mounting support legs made of nylon having elasticity to a leg part. A surface finishing material 6 formed by natural wood decorative plywood is adhered and laminated to a stereo neticulate structure 5 formed by three-dimensionally confounding metallic filaments or synthetic or natural fibers with each other to form a multilayer structure 2. The multilayer structure 2 is adhered and laminated to the backing material 1 to form a sound insulation floor.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a soundproof dry double floor structure, and more specifically, in a multi-story building, the present invention relates to a soundproof dry type double floor structure, and more specifically, in a multi-story building, it is possible to reduce the amount of motion and noise generated on the upper floor to the lower floor. This article relates to a new floor structure that prevents and prevents propagation.

[Prior Art] In general, as described in JISA-1418, the movement and noise that propagate through the floor from the ground floor are reduced to 9.
It is broadly divided into P sound, weight sound, and impact sound. The methods for preventing these noises are fundamentally different. In other words, light U1 generated by a hard impact body? Since the tapping sound (tapping sound) is in a high frequency range, the floor structure is required to have high frequency absorption ability, and it is generally considered effective to use a flexible floor covering material such as carpet. The heavy impact sound generated by soft impact bodies is in the low frequency range, and the floor structure is required to have low frequency absorption ability.
An effective method is to increase the mass of the floor structure.

On the other hand, one of the floor construction techniques is the dry double floor construction method.
This construction method is a commonly used subfloor L4, and the floor base! It consists of support legs attached to the IB via anti-vibration gongs, and a wooden board placed on top of the support legs. In addition, there are cases where a wood-based waste material is applied on top of the same wood-based board, but the law also applies to the floor base 1 as the top.
The purpose is to have a space for laying pipes, ducts, etc., and the sound insulation performance is due to the soundproof gono of the foot, and it is lightweight.
f! The effect of reducing the impact sound is slight.

[Problems to be Solved by the Invention] The present inventor has created a dry double-floor structure that satisfies livability and produces the above-mentioned impact noise, that is, light ffi impact sound 2 weight j9j?
As a result of various studies on floor constituent materials and their combined structure in order to reduce noise, we found that by laminating a three-dimensional wlJ cane structure on a multi-layer floor structure that is layered on the subfloor A''-''. The inventors have discovered that the problem mentioned above can be solved and have arrived at the present invention.

[Means for Solving the Problems] The soundproof floor structure according to the present invention includes a base material composed of a plurality of support legs and a wooden board laid on them, and a base material having at least two-phase and three-dimensional reticulated surface properties. It consists of a multilayered structure consisting of a structure, and the three-dimensional network structure is a metal filament!
-Or, it is characterized by being a three-dimensional network structure formed by three-dimensionally entangling synthetic or natural m-fibers.

Lower 11i used in the present invention! +4 is of a normally used structure, through the floor plate - Lζ anti-vibration gono, I
It consists of a metal or nylon support leg with T-mounted legs and a wooden board placed on top of it. It is horizontally held and supported by the support legs at five locations including the above-mentioned support legs.

Next, the multilayer structure to be attached to the above-mentioned floor subfloor material must include at least a three-dimensional network structure and the most two-layer surface finishing material, and in addition to this, the multilayer structure must include a three-dimensional network structure and the most two-layer surface finishing material. Alternatively, the flexible sheet may be layered with fl' to improve soundproofing performance.

Decorative plywood is commonly used as a surface finishing material.

Vinyl tiles, cork boards, carpets, etc. are used, and are appropriately selected depending on the purpose of the room.

The three-dimensional network structure of the present invention is made of relatively rigid synthetic resin filaments or similarly rigid natural yA! In a three-dimensional network structure made by three-dimensionally intertwining filaments or metal filaments of 1 ton, using a dynamic stiffness tester of a non-common 1 strand and 2 forced displacement type, the stiffness was constantly 70 N/cm at 1 B.
A structure exhibiting a value of 2 cm or less is preferable, and the lower this value is, the better. This f+ff is 70 N/cm2・
This is because if the distance exceeds cm, the effect of alleviating the impact qJl sound will not be sufficient.

Examples of the material of the three-dimensional network structure that satisfies the value of 7ON/cm2.cm or less of the present invention include nylons such as nylon 6 and nylon 66, polypropylene, and liIw.

Examples include semi-[i 7R, polyvinyl chloride, polyacetal, and polyester resin filaments.

Low density polyethylene, ethylene/vinyl acetate copolymer,
Filaments such as ABS resin and Par-11 modified polystyrene lack stiffness, so only a three-dimensional network structure consisting of a certain area should be included.Also, filaments made of natural fibers such as rock wool and Par-11 should be included. Anything within the range of columns can be used as a three-dimensional network structure that falls within the numerical values of the present invention.However, when fibers with high natural stiffness are used in apartment buildings, ventilation may be insufficient. It is recommended that measures such as resin impregnation treatment be taken before use, as metal filaments may encourage the growth of dust mites or reduce strength due to strong alkaline moisture.Metal filaments have a similar effect, but Iron filaments are prone to rust, and aluminum and aluminum alloys yield to impact stress and static load and lose their elasticity, so stainless steel, stainless steel, and other stainless steels with a large spring constant are preferred.

Although the thickness of the filament varies depending on the material, a filament having a diameter of 0.2 to 3 mm is usually used in order for the structure to have physical property values of 7 ON/cm 2 ·cm or less.

If it is thinner than this, no matter how dense the network structure is, how much load will it have? ! j
The soundproofing effect cannot be achieved because it is deformed by the impact.

Furthermore, many materials with a diameter of 31 or more have too much rigidity and do not exhibit behavior that alleviates gPg-. The thickness of this three-dimensional network structure is preferably in the range of 3 to 20II11 at room temperature in the open without any load (in the atmosphere). 3m
m or less, the effect of reducing impact noise such as tapping is poor,
Even if it is 20mm or more, is the ratio negative? This is because the sound reduction effect does not increase, the cost increases, and the amount of sinking of the floor increases when a load is applied.

In addition, the flexible sheet can be used as a soundproof flooring material.

Used to improve fan damping effect, non-woven fabric, butyl rubber 11 sheet, ethylene-vinyl acetate foam sheet,
Uretango 11 foam sheet etc. is used, and its thickness is as follows:
A diameter of about 0.3 to 3.0 mm, preferably about 0.5 to 1.51 mm is used.

The sachet boards are laminated to give the floor material rigidity and workability, and are made of wood-based plywood, with a thickness of 2.31 to 12 mm.
It is about mm.

The components of the multilayer structure can be laminated in any suitable order, except that the floor covering is layered on the top layer, but it is convenient to form the bottom layer into a three-dimensional network structure.

In addition, on one or both sides of the wood-based plywood of the Sutemari River, and on the wood-based plywood on the back side of the decorative plywood on the surface, an appropriate width and depth (L) J is added to increase the apparent rigidity of this board. The resonant frequency may be moved or dispersed by lowering or partially changing the floor impact sound level at low frequencies.

In addition, in order not to lower the height from the floor to the ceiling more than necessary, the total height of the flooring material and multilayer structure is 150 mm.
Is it necessary to take care not to exceed this?

[Effects of the Invention] The soundproof floor structure according to the present invention obtained in this way is particularly suitable for use in concrete and ALC flooring materials, and is suitable for use with glass wool and rock, which have been conventionally used as floor impact noise prevention structures. Wet floating floor structure made of wool, etc., Go 11 block,
Compared to a dry floating floor structure such as the Go J1 pad, the application area is shorter, and the floor impact sound level can be effectively reduced over a wide frequency range, not only in the high frequency range but also in the low frequency range, which was previously considered difficult. It has the following characteristics.

[Example] The present invention will be described in more detail with reference to Examples below.

Example ! As shown in Figure 1, as the base material (1), gono,
Five nylon support legs (3) with elastic bodies are attached to the wooden board (4).5. ．． I used 5++uw plywood that was nailed and pasted.

On this base material, a multilayer structure (2) with a thickness of 8II
IIll, stiffness test 11αN = 658/cm2・
A natural wood decorative plywood was adhesively laminated as a surface finishing material (6) having a thickness of 9III+ cm on the three-dimensional network structure (5) having a thickness of 9 cm.

Example 2 As shown in FIG. 2, the same base material (1) as in Example 1 was used, and the same three-dimensional network structure (5) as used in Example 1 was prepared from the bottom as a multilayer structure (2). , a 2.5 mm thick disposable plywood (7), and a 6 ms+ thick natural wood decorative plywood (6) were used.

Example 3 As shown in FIG. 3, the same base material (1) as in Example 1 was used, and the same three-dimensional network structure (5) as used in Example 1 was added in order from the bottom as the multilayer structure (2). 2.5mm plywood sacrificial board (7), thickness 1 as flexible sheet (8)
．． An lfi layer was formed of a 5s+m viscoelastic gore, a sheet, and a 6.0 mm thick natural wood decorative plywood (6).

Example 4 The multilayer structure of Example 3 was constructed in exactly the same manner as in Example 3, except that the lamination order of the flexible sheet and the disposable plywood was reversed.

Comparative Example On the same base material as in Example 1, the same natural wood decorative plywood as in Example 1 was adhesively laminated without laminating the three-dimensional network structure.

Regarding each of the above examples and comparative examples, light ffi impact sound and heavy ffi impact sound propagated from upstairs in accordance with JISA-1418
The results of the experiment regarding i-street gunfire are shown in Tables 1 and 2, respectively.
Shown in the table.

From the above results in Table 1 and Table 2, it can be seen that the present invention has an excellent reduction effect on both light impact noise and heavy stone impact noise.

[Brief explanation of the drawing]

FIG. 1, FIG. 2, and FIG. 3 respectively show Example 1 of the soundproof floor structure according to the present invention. FIG. (1) Base material, (2) Multilayer structure, (3)
...Support leg. (4)... Wooden board, (5)... Three-dimensional network structure, (6)... Surface finishing material, (7)... Plywood, (8
)...Flexible sheet. Patent applicant Nippon Shichion Co., Ltd. Zeon Kasei Co., Ltd.

Claims (1)

[Scope of Claims] 1. A multilayer structure consisting of a base material consisting of a plurality of support legs and a wooden board laid on them, at least a surface finishing material and a three-dimensional network structure; A soundproof floor structure characterized in that the network structure is a three-dimensional network structure formed by three-dimensionally entangling metal filaments or synthetic or natural fibers. 2. The soundproof floor structure according to claim 1, wherein the multilayer structure comprises, in order from the bottom, a three-dimensional network structure, a waste board, and a surface finishing material. 3. The multilayer structure consists of, in order from the bottom, a three-dimensional network structure, a waste board,
The soundproof floor structure according to claim 1, comprising a flexible sheet and a surface finishing material. 4. The soundproof floor structure according to claim 1, wherein the multilayer structure comprises, in order from the bottom, a three-dimensional network structure, a flexible sheet, a scrap board, and a surface finishing material.