JPH0266258A - Multilayer type compound sound insulating floor material - Google Patents

Abstract

PURPOSE:To improve soundproofing performance against lightweight floor impact noise by arranging buffering members so as to be a specified ratio in contact area between a specified thickness of surface member and a bed plates, and constituting a floor member turough laminating four layers or more. CONSTITUTION:A floor member is made by laminating four layers in order of a wood surface member 1, a buffering member 2, a bed plates 3 and a buffering member 4 from the surface, or more than six layers adding one layer or more of bed plate and buffering member respectively still more. Ratio in contact area of bed plates 3 in one layer or more with buffering members 2, 4 in the upper and lower sides thereof is made into more than 10%, less than 50%, and further, not contacting portion is made so as to be apart from neighboring layer over 0.2mm. Further, the surface member 1 is made to be more than 2mm and less than 6mm in thickness, and still respective bed plates more than 4mm and less than 9mm in thickness.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a composite soundproof flooring material.

Wood-based flooring is a product that has been rapidly increasing in demand in recent years as it is valued for its cleanliness and luxury as an alternative to carpets and carpets that were previously used in condominiums and public housing due to dust mite pollution. .

[Prior Art] Conventionally, there has been a type of wood-based composite flooring material in which a foam made of ethylene-vinyl acetate copolymer is bonded to the back side of a wooden floor shrine (for example, Japanese Patent Publication No. 61-6224, etc.). Foams of ethylene-vinyl acetate copolymer or polyethylene filled with a considerable amount of calcium carbonate are mainly used.

These foams have good moisture resistance and adhesion, and are also effective in retaining heat, so they form the mainstream of current wood-based composite flooring materials. However, in housing complexes such as condominiums and public corporations, the problem of light impact noise, such as the sound of falling dishes and bowls, and the sound of moving chairs, tables, etc., has become a major issue, which was not a problem with conventional carpets and carpets. There is. This kind of light impact sound is caused by the fact that the flooring surface is made of a hard material like wood! It is unavoidable that it generates a loud noise compared to /1 ¥1 or carpet, but the entire back surface of current wooden flooring materials is coated with a considerable amount of ethylene-vinyl acetate copolymer and polyethylene. Another major factor is the low soundproofing performance of composite flooring materials made of polyolefin resin foam filled with calcium carbonate.

[Problems to be Solved by the Invention] An object of the present invention is to provide a composite soundproof flooring material with excellent soundproofing properties that improves the drawbacks of conventional flooring materials.

[Means for Solving the Problems] That is, the present invention has four layers of a wooden surface material, a cushioning material, a base plate, and a cushioning material, or six or more layers in which one or more layers each of a base plate and a cushioning material are laminated from above. The contact area between one or more baseplates and the upper and lower cushioning materials is 10% or more and 50% or less, and the areas that are not in contact are 0% or less than the adjacent layer.
．． The present invention relates to a multi-layered composite soundproof flooring material, characterized in that the flooring materials are arranged so that they are spaced apart by 2 mm or more.

[Action Co. Hereinafter, the present invention will be explained in detail using figures.

FIGS. 1 and 2 show a perspective view and a side view of the multi-layered composite soundproof flooring material of the present invention seen from above.

In the present invention, factors for preventing lightweight floor impact noise include providing a slightly thick gap between the wooden floor member and the ta'aj material, adjusting the flexibility of the cushioning material, and adjusting the flexibility of the wooden floor member. It all stems from our discovery that we can reduce the thickness. By adjusting these factors, it is possible to obtain a flooring material that exhibits unprecedented soundproofing performance and has a thin total flooring thickness.

In order to realize this unprecedented soundproofing effect, the details of the multi-layered composite soundproofing flooring material of the present invention will be further explained below.

It is required that the contact area between the base plate 3 and the upper and lower cushioning materials 2.4 is 10% or more and 50% or less of the total flooring area. If it exceeds 50%, sufficient prevention performance cannot be obtained, and 1
If it is less than 0%, the flexure of the surface material becomes large in response to a load or impact from above, resulting in deterioration of both durability and soundproofing performance.

Further, the non-contacting portions are required to be separated from adjacent layers by 0.21 or more. If it is less than 0.2 dragon, when an impact is applied, the impact will be directly transmitted due to the bending of the wood, and the soundproofing performance will be greatly deteriorated.

The material of the cushioning material used in the present invention does not matter as long as the upper and lower surfaces are uniform and parallel, the cushioning material has little sag under load, and has a certain degree of cushioning properties. For example, a polymer foam or a collection of inorganic fibers can be used.

In addition, regarding the thickness, both the upper and lower buffer layers are IIIm or more,
L2 exhibits excellent soundproofing performance.

The thickness of the wooden surface material is preferably 2 mm or more and 6 mm or less. If it is less than 21, the durability may deteriorate when the load per unit area is large, such as a chair with casters, and the load is concentrated in a small area, and if it exceeds 6, the soundproofing performance may deteriorate. . Moreover, it is preferable that the thickness of the base plate is 2 or more and 9 or less. The reason for this is the same as in the case of wood facing materials, but the rate at which soundproofing performance deteriorates due to increase in thickness is smaller than that of wood facing materials, so up to 9 ++ us is allowed.

The multilayer structure of the present invention can be produced by laminating the members defined above in the order of the wooden surface material, the cushioning material, the base plate, and the cushioning material, or by repeatedly attaching the base plate and the cushioning material using an adhesive. Type composite soundproof flooring can be obtained.

[Example] Hereinafter, the present invention will be explained based on examples.

(Example 1) 5-45.55-95.105-145.155-1 from the left side of the vertical side of a base plate with a thickness of 5.5 mm and a size of 30 squares
A process of cutting a band-shaped area between 95.205 to 245.255 to 295 to a depth of 0.5 is applied to both the top and bottom of the plate. This board is used as a base plate, and the surface material has a thickness of 9 mm and a size of 30 mm.
The thickness is 2 for the cm square base plate, middle layer and bottom layer cushioning material.
A 30cm square Lion Board F (manufactured by Lion Corporation) was glued with EVA adhesive (manufactured by Konishi Corporation, product name: rcvc3).
105J), the total thickness is 18.5 mm, the size is 30 cm square, and the contact area between the base plate and the upper and lower cushioning materials is 2.
A multi-layered composite flooring material containing 0.8% was obtained.

FIG. 3 is a top view of this base plate.

(Example 2) The surface material used was a base plate with a thickness of 4 mm and a size of 30 cm square, and the base plate used was a base plate with a thickness of 12 m11 and a size of 30 cm IT1 square that was processed in the same manner as in Example 1. A multi-layered composite flooring material having the same structure as in Example 1 with a total thickness of 20 m, a size of 30 cm on all sides, and a contact area between the base plate and the upper and lower cushioning materials of 2068% was obtained.

A multi-layered composite flooring material having a contact area with the material of 20.8% was obtained.

(Example 4) A wooden frame was made using two pieces each of square lumber with a thickness of 9 cm, a width of 1 cm, and a length of 30 cm and 28 cm, and this board was used as a base plate.

The surface material is a base plate with a thickness of 3 mm and a size of 30 cIT+, and the middle and bottom layer cushioning materials are Lion Board F (manufactured by Lion Corporation) and EVA adhesive (manufactured by Konishi Corporation, product name rcVc3).
105J), total thickness 16m + * size 30c + n square, contact area between base plate and upper and lower cushioning materials is 1
A multi-layered composite flooring material having a concentration of 2.8% was obtained.

(Example 3) The surface material used was a base plate with a thickness of 4 mm and a size of 30 cm square, and the base plate used was a base plate with a thickness of 5.5 aus and a size of 30 cm square that was processed in the same manner as in Example 1. , the other configurations are the same as in Example 1, with a total thickness of 13.5 m+.
*Size: 30cI on 11 sides, cushioning between the base plate and the top and bottom (Comparative Example 1) Thickness: 12cm, size: 30cII + square Wood flooring material Lion Board F (manufactured by Lion Corporation) and EVA adhesive (manufactured by Konishi Corporation, product name) rCVC3105J) to obtain a flooring material with a total thickness of 14 mm and a size of 30 am square, similar to the wood direct reflooring currently used for boat fishing.

(Comparative Example 2) The surface material is a base plate with a thickness of 3 II 111 and a size of 30 cm + n square, the base plate is a base plate with a thickness of 5.5 aus and a size of 30 cm square, and the middle and bottom layer cushioning materials are Lion Board F (Lion (manufactured by Konishi Co., Ltd.) and EVA adhesive (manufactured by Konishi Co., Ltd., product name: R).
cVc3105J), total thickness 12.5
A multi-layered composite flooring material of i+m size 30 marks square in which the base plate and the upper and lower cushioning materials were all in contact was obtained.

(Comparative Example 3) A wooden frame was made using two pieces each of square timbers with a thickness of 9 cm, a width of 7.5 cm, a length of 30 cm, and 15 cm + n, and this board was used as the base plate, and the other structure was the same as in Example 4. A multi-layered composite flooring material having a total thickness of 16 mm, a size of 30 cm square, and a contact area between the base plate and the upper and lower cushioning materials of 75% was obtained.

(Comparative Example 4) 5-45.55-95.105-145° 155-1 from the left side of the vertical side of a 30cm square base plate in order of thickness 5.5
A process of cutting a band-shaped area of 95.205 to 245.255 to 295 to a depth of 0.1 mm is performed on both the top and bottom of the plate. This board was used as a base plate, and the surface material was a 4 m thick + 30 cm square base plate, and the middle and bottom layer cushioning materials were Lion Board F (manufactured by Lion Corporation), 2 mm thick and 30 cm square. adhesive (manufactured by Konishi Co., Ltd., product name
CVC3105J), total thickness 13.5
A multi-layered composite flooring material having a size of 30 (1 square) and a contact area between the base plate and the upper and lower cushioning materials of 20.896 mm was obtained.

(Floor impact sound Δ-1 constant) Each of the nine flooring materials shown in each example was made into a slab with a thickness of 150 m.
m concrete with double-sided tape so that it is 90cm square, and the tapping machine is placed parallel to the diagonal of the 90cm square so that the hitting point of the center hammer is in the center, and when the tapping machine is driven. The sound generated downstairs was measured. The loudness of the sound was analyzed by a one-octave analyzer, and the sound pressure level of 125.250.500Hz, which determines the light floor impact sound level, is shown in Table 1. The lower the sound pressure level on the floor directly below, the higher the soundproofing performance of the floor. Example 1.2.3.4 and Comparative Example 1
．． From the comparison of 2.3.4, an improvement value of 6 dB or more was obtained at 500 Hz. In particular, for Comparative Example 1, which is the same type of floor material as the conventional one, the
It is improved by more than 7 dB at 250 Hz.

[Effects of the Invention] As is clear from the above explanation, according to the present invention, the soundproofing performance against lightweight floor impact noise is improved by 500Hz compared to the conventional one.
can be improved by 6 dB or more.

[Brief explanation of the drawing]

FIG. 1 is a perspective view from above showing a specific example of a multi-layered composite soundproof flooring material according to the present invention. FIG. 2 is a side view showing a specific example of a multilayer composite soundproof flooring material according to the present invention. 1 Wood surface material 2 Cushioning material 3 Base plate 4 Cushioning material FIG. 3 is a top view showing an embodiment of the base plate of the multi-layered composite soundproof flooring material according to the present invention. Patent applicant: Tosoh Corporation Figure 1 Figure 2 Figure 3

Claims (2)

[Claims] (1) In flooring materials consisting of 6 or more layers consisting of four layers of wood surface material, cushioning material, base plate, and cushioning material, or one or more layers each of base plate and cushioning material, one or more layers of base material are used. The contact area between the board and the upper and lower cushioning materials is 10% or more and 50% or less, respectively, and the non-contact area is 0.2 m from the adjacent layer.
A multi-layered composite soundproof flooring material characterized by being configured such that the floors are separated by at least m. (2) The multilayer composite soundproof flooring material according to claim 1, wherein the surface material has a thickness of 2 mm or more and 6 mm or less, and the base plate has a thickness of 4 mm or more and 9 mm or less.