JPH011856A - soundproof flooring - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a flooring material, and particularly to a soundproofing flooring material that is used in the upper floors of a house to prevent solid sound from propagating to the lower floors due to impact from the floor. .

<Prior art> This type of soundproof flooring material includes, for example, a soft high-foam layer with a foaming rate of 3 to 101 on the back side of the flooring body and a soft low-foam layer with an embossed foaming rate of 1.5 to 3 times. After forming the foam layer and the fla layer one after another
Alternatively, a sound insulating foam consisting of multiple layers is attached to the entire lower surface of a wooden board, and the foaming ratio of the sound insulating foam is made to be different in adjacent layers.
No.) has been proposed. In these soundproof flooring materials, H
Foam is used as an ER material, and since the foam is compressed or deformed by impact, the collision time becomes longer during the deformation, and the change in momentum, that is, the force bond, and the time integral value of the impact force are constant. Even if there is, it will reduce the peak value of the impact force and the iR shock natural frequency, and reduce the fE to the board. This is because it reduces the input energy, thereby reducing noise and vibration caused by impact. In addition, when such a cushioning material such as a foam is bonded to the back surface of the flooring material, the FR impact energy is absorbed by the expansion and contraction deformation of the extraction tool caused by the bending vibration of the flooring material, resulting in a double effect. be.

<Problems to be Solved by the Invention> In order for these conventional soundproof flooring materials not to have a -1 minute soundproofing effect, the thickness ratio of the flooring material and the cushioning material must be f! , 311, and generally the cushioning material is used with a thickness 2 to 3 times that of the flooring material. However, if the thickness of the cushioning material is set in this way, the flexure of the white wood of the floor material becomes large, and the fruit portion of the floor material may be damaged or unevenness may occur in the fruit portion.

In addition, since the cushioning material is too soft, it is difficult to walk on the floor.Furthermore, heavy objects such as pianos, refrigerators, and furniture are placed on the flooring, which places a concentrated load on the flooring. If this occurs, the 11 rE material will be compressed and its buffering effect will be significantly reduced. Furthermore, when such large loads are applied to each other over a long period of time, the restoring force of the cushioning material itself is weak, causing the floor surface to become wavy and causing unevenness at the butt points with adjacent flooring materials. There was a problem.

Means for Solving the Problems> Therefore, the present invention solves the above-mentioned problems in the past technology and provides a novel soundproof flooring material that is excellent in soundproofing effects and is also good against walking noise and does not cause any practical inconvenience. It was devised for the purpose of providing a floor material substrate, a sheet-like RjU rN material that is adhered to the back surface of the floor material substrate and has a plurality of convex portions formed on both the front and back surfaces thereof, and the This is a soundproof flooring material having a characteristic of tv consisting of a vibration damping sheet 1- bonded to the back surface of a sheet-like cushioning material and an elastic sheet bonded to the back surface of the vibration damping sheet. Preferably, the positions of the convex portions on the front and back surfaces of the sheet-like buffer are formed as ZWN on the front and back surfaces.

;Detailed description of the invention and for fv> Floor material substrates include plywood, fiberboard, particle board,
Any plate-like material such as sawn wood can be used.

The surface of the substrate may be printed with a pattern, pasted on a veneer, pasted with a synthetic resin or resin-tipped decorative seal, or pasted with a decorative paper (made with decorative paper, decorative paper impregnated with H-1Y1 fat, or made with synthetic resin), as required. Optional papering, etc. (can be applied with makeup.

Actual processing such as interlocking processing and actual processing is performed on the end portion of the board.

On the back surface of such a substrate, a sheet-like TATR material having a plurality of protrusions formed on each of its front and back surfaces is adhesively laminated via an adhesive. If necessary, the sheet-like cushioning material may be adhered to the substrate with a nonwoven fabric interposed therebetween.

The sheet-like slow drawing material is formed from a sheet-like material such as rubber-based, synthetic resin-based, asphalt-based, or the like.

For example, it consists of a ring-opening polymerized monomer (norbornene monomer) consisting of ethylene and dichloropentanediene.

The hardness of the material of the cushioning material is preferably about 30 to 65 degrees. If the angle is less than 30 degrees, when it is installed as a floor, it is likely to sink due to the load of heavy items such as pianos, refrigerators, and furniture, and if it is over 65 degrees, it will be susceptible to impact forces. Energy absorption is 1
This is because the soundproofing effect will be reduced if the soundproofing effect is not properly maintained.

The convex portions formed on both the front and back surfaces of the vLrgI material are first formed into a single piece of wood with a circular cross section, but the shape is not limited, and may be, for example, a polygonal prism shape such as a square or trapezoid, or a cut shape. The shape may be a conical head, a pyramid, a hollow cylinder, a rectangular cylinder, or the like.

By forming a plurality of convex portions on both the front and back surfaces of the cushioning material in this way, an excellent soundproofing effect can be obtained, and the reason is believed to be as follows. In addition, solid-state sound acting on flooring material is particularly noticeable to people downstairs, as it is transmitted from the source to the flooring material as solid vibration, propagates through the flooring material as vibration, and finally reaches the air. It is radiated into the human body as sound, or directly transmitted to the human body as vibration, and is sensed by the human hearing.In order to prevent solid sound in this propagation system, it is necessary to buffer, that is, absorb the impact energy. It is necessary to consider two factors: and vibration damping, that is, absorption of vibration energy.

First, considering [8], the fR''2 energy applied to the floor surface (floor material substrate) propagates from the convex part on the front side of the sheet-like cushioning material bonded to the back side to the convex part on the back side. However, since the contact area with the substrate is small and the amount of expansion/contraction deformation per unit area is large, it is not possible to bond the sheet-like cherry material to the entire surface of the three substrates without providing a convex portion. The cushioning effect is improved compared to that of the sheet-shaped cherry blossom painting material.Also, by providing the convex portions, when the shock energy is applied, flexure occurs between the convex portions, so the amount of deformation becomes larger, and the viscoelasticity of the sheet-like cherry blossom painting material itself In addition, since the amount of deformation of C I/F
j9 energy can be lowered. Thus, according to the configuration of the present invention, a remarkable buffering effect can be obtained.

Next, vibration damping is achieved by converting the applied vibration energy into intermolecular frictional energy while propagating through the material, in other words, into thermal energy and attenuating it, or by using a sheet-like cushioning material. Since the convex portions are formed on both the front and back sides, the propagation distance of vibration energy becomes longer, and conversion into thermal energy can be performed more efficiently.

In particular, if the convex parts on the front side and the convex parts on the back side of the sheet of Akizakura painting material are formed at different positions, the 1!2 difference between the convex parts formed at different positions on the front and back sides becomes larger. In addition to absorbing impact energy more effectively, the propagation of dynamic energy is carried out via a zigzag path, resulting in a longer propagation distance, which further improves the vibration damping effect. Be able to do that.

Furthermore, a space formed between the back side of the flooring substrate and the convex part on the front side of the sheet-like cushioning material 1, and between the convex part on the back side of the sheet (5FP material) and the floor base. acts as a sound-absorbing chamber, further improving the insulation effect.

In addition, when the convex part of the sheet-like y1 art material is made into a hollow cylindrical shape or a rectangular cylinder shape, the hollow part of the convex part is closed by the substrate; It also serves as a cushion and can further enhance the soundproofing effect.

In the present invention, a vibration damping sheet and an elastic sheet are further laminated and adhered to the back side of the sheet-shaped cherry box material, and the sheet-shaped cushioning material is adhered to the flooring substrate through these sheet materials. There is. As these damping sheets 1- and elastic sheets themselves, known ones can be used. Damping sheets generally have synthetic rubber and synthetic resin as their main components, such as ethylene propylene rubber (EPDM), and have a rubber hardness of 6.
It is about 0 to 80 degrees, and heavy substances such as iron powder and iron oxide are mixed to make it have a mass of 1 to 1.2 or more, which improves sound insulation properties. : Sometimes called a sound insulation sheet. Such a damping sheet absorbs vibration energy and enhances the soundproofing effect, and provides tensile strength to resist bending of the entire composite flooring. In addition, the elastic sheet is, for example, a polyolefin foam with a foaming ratio of 3 to 30 times, which acts as a second cushioning material to absorb vibration energy, prevent unevenness, and provide a moderate walking feeling through its elasticity. Produces the effect of a straw hat. In addition, by interposing these sheet materials between the G-1~ shaped Sakurada material and the flooring base such as concrete,
Adhesion can be improved.

<Example> Fig. 1 and Fig. 2 show a preferred embodiment of the soundproof flooring material according to the present invention.
The flooring substrate is made of a plate-like material such as particle board, and although not shown, the surface thereof may have an arbitrary decoration applied thereto.

A sheet-like cushioning material 3 is adhered to the entire back surface of the substrate 1 with a nonwoven fabric 2 interposed therebetween.

In the illustrated embodiment in which a plurality of convex portions 4 are formed on both the front and back surfaces of the sheet-like cushioning material 3, the formation positions of the convex portions 4 do not match on the front and back surfaces of the cushioning material 3 and are displaced. That is, the convex portions 4a on the front side and the convex portions 4b on the back side are not formed linearly in the cross section of the cushioning material, but are formed in a zigzag shape. This state is buffer material 3
By referring to FIG. 2, which shows t-
>), it can be understood that the cushioning material 3 is in contact with the upper layer substrate 1 and the lower layer 1TI vibration sheet 5 via the convex portions 4a and 4b on the back surface of these 7,
A space 8 is formed between these as a sound absorption chamber.

A damping sheet 5 is bonded to the back surface of the sheet-like yIWr material 3 via the lower surface of the convex portion 4b, and an elastic sheet 6 is bonded to the entire back surface of the damping sheet 5.

Substrate 1, sheet I/shaped city material 3, vibration damping sheet 5, and bullet 11
- The floor of the present invention (10) is constructed on the floor F ground 7 and is made of a nonwoven fabric 2 arranged between these substrates and the sheet MWi material as required. Used as a floor.

In order to confirm the soundproofing effect of the flooring material of the present invention, tests were conducted in the following order.

Various test specimens of the same size were placed on a concrete floor board of 1818az x 2727/1z and 150zz thick, and a light impact test using a punching machine and a heavy impact test using a panda machine were carried out using the center metal impact point of the main surface of the test. I performed a shock test I). The test specimen was (A) a 6um thick precious wood nest board! l+! 1 Norbornene monomer (tensile strength 7 Ay/cm2 (room temperature), 10% compressive strength 1, 2 kg/cx2. Rubber hardness: 53 degrees) 111M thick, each height on both sides 2.
A sheet-like cushioning material with a plurality of 5H convex portions is adhered, and a damping sheet with a hardness of 70 degrees and a thickness of 1U (Saitama Gono, Industrial Co., Ltd.), and furthermore, on the entire back side, an elastic sheet 1 with a compressive strength of 1026 L and 2 kg/cx'
(B) The same precious wood i-
Temporary board paste base (on one side of E, it is made of one polyolefin resin foam and has a foaming ratio of 1018 and 2 times 32)
Adhesive laminations were prepared in which each layer was 1L and 5xx thick.

2) The test results for the two types of whitebait test specimens are as shown in the graph in Figure 3.9 In this graph, the results of the light Fi-impact test 1- of the test specimen (A) are ○-O, heavy impact The test results are shown as ---, the results of the light ffI impact test on the 9 specimens (B) are shown as △ and △, and the results of the heavy impact test are shown as ``mu'' and ``mu''. As is clear from this graph, the test specimen (A), which is a material of the present invention, has L-55 in all frequency ranges not only for heavy impact but also for light impact.
However, in contrast, the comparative material, test specimen (B), remained at a much lower level than this, especially in response to the impact noise that occurs in everyday life. The results of the test were less than -60, which is enough. Therefore, according to the flooring material of the present invention, (
Finally, the so-called remarkable anti-aircraft effect will be demonstrated.

This was confirmed from the test results.

・Effects of the invention> According to the present invention, a flooring material with extremely excellent soundproofing effects can be obtained,
However, this flooring material has a simple structure and can be manufactured at low cost using materials that have been commercially available since UC. In addition, the sheet-like 11% material used for the flooring material of the present invention has a suitable hardness and is further bonded with elastic G-L as the bottom layer, so it has an excellent walking feel when used as a flooring material. .

[Brief explanation of drawings]

1 [J is a cross-sectional view showing the structure of a soundproof flooring material according to an embodiment of the present invention, 2I2I is a plan view showing a sheet-like heating material used for the flooring material of FIG. 1, and FIG. FIG. Explanation of symbols 1...Substrate 2...Nonwoven fabric 3...Sheet cushioning material 4.4a, 4b...Convex portion 5...Vibration damping sheet 6...
・Elastic sheet 7・・Floor base 8・Soundproof room 10・・
・Flooring material patent applicant Noda Suita Co., Ltd. agent Patent attorney Fumi Izumihara Fumi Doma Doma Take 1) Koberyu 1 Inki 2 Prisoner A Bi 3 Prisoner Off'5'-7'' Funeral Nakabetsuji Bamboo Grain (Sunday 7) Procedural amendment July 24, 1988 1, Case indication 1986 Patent Application No. 153630 4, Agent 102 Address 3-11-5 Iidabashi, Chiyoda-ku, Tokyo
No. 6, Subject of amendment “Detailed description of the invention” in the specification
Column 7, Contents of the amendment As shown in the attached sheet (attached sheet) 1. In the “Detailed Description of the Invention” column of the specification of the present application, the description in lines 7 to 9 of page 5 has been changed to “For example, A polymer obtained by ring-opening polymerization of norbornene monomer is used. Correct 1.
The description "Norbornene monomer" has been corrected to read "Polymer J obtained by ring-opening polymerization of norbornene monomer consisting of ethylene and cyclopentanediene."

Claims (2)

[Claims] (1) a flooring substrate; a sheet-like cushioning material that is adhered to the back surface of the flooring substrate and has a plurality of convex portions formed on both the front and back surfaces thereof;
A soundproof flooring material comprising a vibration damping sheet bonded to the back surface of the sheet-like cushioning material and an elastic sheet bonded to the back surface of the vibration damping sheet. (2) The soundproof flooring material according to claim 1, wherein the positions of the convex portions on both the front and back surfaces of the sheet-like cushioning material are different from each other on the front and back surfaces.