JPS6363857A - Composite soundproof floor material - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a flooring material that provides good livability for residences or other places, especially apartment complexes, and has an excellent effect of reducing floor impact noise.

Conventional technology Conventionally, 1. E (This is an analogy from what is called a cushion floor; H plus y
Carpet 7 and tatami mats are commonly constructed in the Song Dynasty, but 1111 each lacks warmth, and the name is J Sosu, and there is a risk of dust mites forming on the floor. Therefore, for example, parquet plywood such as oak floors and wood grain G
Flooring materials with an excellent wood texture, such as decorative plywood made of beautiful cherry blossom trees or synthetic wood, are often used. In addition, in high-traffic areas such as meeting halls, offices, and school auditoriums, the above-mentioned parquet plywood or even surface hardness can be used instead of hinyl tile sheets because of its high quality wood feel and abrasion resistance. When required, IAJ magnetic tiles and resin-filled concrete decorative tiles are also used.

Problems to be Solved by the Invention However, when the above-mentioned parquet plywood and the like are used as flooring materials, it tends to produce a cod pink sound, that is, a city pounding sound, and in apartment complexes, the impact noise especially from the upper floors is a problem. Ori,
For example, there is a construction method that calls for laying high-density glass wool under the flooring to absorb sound, but it is not effective in reducing ib impact sound and is cumbersome to install. Flooring materials such as resin Liconocrete decorative tiles make loud pink noises caused by the heels of shoes when walking or jumping.
This reduction is needed.

Means for Solving the Problems The present inventors have conducted various studies on methods of reducing impact noise by combining loose materials, vibration isolating materials, and damping materials as a method of reducing 1 liv sound on the floor. Formed by intertwining metal filaments or synthetic or natural fibers on the lower layer of a composite board surface that has been treated to have a loss coefficient of 0.05 or more by laminating a viscoelastic material on one or both sides of a composite board material. The authors discovered that an excellent impact noise reduction effect can be achieved by using a composite floor material made of a three-dimensional network structure and a decorative thin-layer wooden board with a soft sheet laminated on the top layer. He completed his invention.

The present invention will be explained based on the accompanying drawings.

FIG. 1 shows an embodiment of the soundproof flooring material according to the present invention, in which wood-based boards (1), (
1'), and a three-dimensional network structure (
3) and apply makeup through a soft sheet (・l) on the top layer? A J-layer wooden board is attached to form the J layer.

In addition, as shown in FIGS. 2 and 3, woven or non-woven fabrics (6), (6') may be coated on one or both sides of the three-dimensional network structure.
As shown in FIG. 4, a viscoelastic body for damping the wooden board may be attached to one side of the wooden board.

The wood-based boards (1) and (+') may be, for example, single-layer boards, bonded boards, or wood-based organ fiber boards such as particle book-1.

In addition, in the case of a composite board with a viscoelastic body (2) inserted between them, the thickness of the wood-based board is determined by the rigidity and i of the composite board.
ii.Sound reduction characteristics can be determined, but usually 2 to 15 m.
A diameter of about 1 mm, preferably about 3 to 10 mm is used. If the thickness is less than 2 mm, the rigidity of the floor will generally be insufficient, although it depends on the rigidity of the other board.On the other hand, if the thickness is 15 mm or more, this will also be difficult. Although it depends on the characteristics of the viscoelastic body inserted in the viscoelastic body, in general, the fI11 oscillation effect due to the viscoelastic body appears and becomes graceful, which is undesirable because it becomes difficult to express the effect of reducing the floor iii impact a. .

Further, the materials of the upper plate material and the lower plate material may be the same or a combination of different materials, and may be determined depending on the use and purpose.

Furthermore, when the viscoelastic material (2) is attached to one side of a wood-based board to make a composite board, the thickness of the wood-based board is also determined by its rigidity as a composite board. 1;! Although it is determined based on the g-attenuation characteristics, it is usually about 1 to 30 a+m, preferably 5 to 1
A diameter of approximately 0+m is used. If the thickness is less than 4ffill, the rigidity of the floor will generally be insufficient, while if the thickness is more than 30mm, this also depends on the characteristics of the viscoelastic material to be attached. In general, it is difficult to make the loss coefficient of the wood composite board 0.05 or more, and as a result, the effect of reducing the floor impact f2 sound is undesirable.

The viscoelastic body (2) is not particularly limited.

In general, when inserting into the opening of a wooden board, a material with a low elastic modulus and high tan δ is used.
High elastic modulus when applied to one or both sides.

A material with a high La5t is used. In other words, although the mechanism that exerts uphill damping is different in each case, in order to achieve the j÷j impact sound attenuation effect as a soundproof flooring material, the loss coefficient of the legal wood board material must be 0.05 or more. It is necessary that there be.

The thickness of such a viscoelastic body may be different depending on whether it is inserted between wooden boards or when it is attached to one or both sides of a wooden board, but in the former case, Usually 0.25-3.0mm+, preferably 0.5-1-
5! A material of about v+ is used.

If the thickness is less than 0.25 mm, the loss coefficient of the composite board will not be effectively expressed, and therefore it will not be possible to effectively attenuate the sound of the floor 1h. In addition, if the thickness is 3.0 am or more, since it is a viscoelastic material, under high temperatures such as direct sunlight in summer, it may flow from the joints when a large n1 etc. acts on the floor. Good as a flooring material because of: Not suitable.

In general, in the latter case, the Tn lapse coefficient of the composite board, which is the subject matter of the wood invention, is set to 0.05, although there are no particular limitations depending on the quality of the wooden board. In order to achieve the following, a viscoelastic material having a diameter of 1 mm or more is used. Furthermore, if the thickness exceeds 5!1 m1, depending on the material, in addition to the vibration damping effect, effects such as mass and acoustic impedance ratio will also appear, which is the main purpose of the present invention. It becomes something different.

Materials for such viscoelastic bodies include butyl rubber, SB
Synthetic rubbers such as R, Nl3R, and synthetic resins such as polyvinyl chloride are used, and the elastic modulus, jan δ, etc.
A sheet formed by blending various oils, plasticizers, fillers, etc. according to the target is used.

In addition, adhesive is usually used to fix this viscoelastic material by inserting it into a wooden board or pasting it on one side of a wooden board, but the viscoelastic material itself does not change over time. It is not necessarily necessary to use an adhesive as long as it has low self-adhesion. The three-dimensional network structure (3) of the present invention is a three-dimensional structure made by three-dimensionally entangling relatively rigid synthetic resin filaments or similarly rigid natural fiber filaments, and in the structure, 1';y ON/c at room temperature using a non-resonant, forced vibration wheel dynamic stiffness tester
m2・Cl11 or less, 15 N/cm...(m or more showing a dynamic stiffness test value - J-t The anti-ITI function was expressed, while 15N/c
This is because if it is less than o2.Cl1l, the deformation will be too large, causing discomfort and making it difficult to develop the physical properties of the floor.

Examples of the reticular tX structure material satisfying the above-mentioned range of the present invention include 6 nylon, 6 G-J-ylon, high-medium density polyethylene, polypropylene, hard a,
Filaments made of hard polyvinyl chloride, polyacetal, polyester resin, etc. are included. Filaments of low-density polyethylene, ethylene-vinyl acetate copolymer, l\BS resin, and rubber-modified boristinine have a high stiffness. Since ゛ is insufficient, only the three-dimensional network structure consisting of the range of -. is included. In addition, natural fibers having a stiffness within the range of residual pillars such as wool, bar 1, etc. can also be used as a network structure falling within the numerical values of the present invention. However, when natural, highly rigid fibers are used in housing complexes, there is a risk of insufficient ventilation, which may encourage the growth of house mites, or a decrease in strength due to strong alkaline moisture. It is preferable to take measures such as resin impregnation treatment before use. Metal filaments have a similar effect, but iron filaments are prone to rust, and aluminum and bronze yield to impact stress and static loads and lose their elasticity, so stainless steel and stainless steel are heavy and have a large spring constant. Preferably.

These net-like structures are formed into a rough mat shape by intertwining the filaments as described above, and have a large porosity, appropriate elasticity, and are highly effective in absorbing imaging energy. It also has the effect of absorbing the undulations (flicks) of concrete slabs. The thickness of the filament varies depending on the material, but in order for the three-dimensional network structure to have physical property values within the above range, a filament having a diameter of 0-2+111 to 3 mm is usually used. If the diameter is larger than this, no matter how dense the network structure is, it will be deformed by 11 layers or impact and will not be effective. Moreover, if the diameter is 3n+m or more, the rigidity is too high, and there are many materials ↑1 that do not exhibit a V-force that can alleviate impact noise. The thickness of this three-dimensional network structure is 3 to 20!1 m at room temperature and in an open air without any load.
A range of l is preferred. If it is less than 31, the effect of reducing impact noise such as tapping is poor, and even if it is 20 mm or more, the effect of reducing impact noise does not increase to that extent, resulting in an increase in cost, and the amount of floor sinking when a load is applied increases. This is because such problems arise.

In addition, as mentioned above, the wooden three-dimensional network structure is
It is possible to use wood-based boards on one side or both sides, or to laminate non-woven fabric or woven fabric to improve adhesion to the floor slab or to reinforce the three-dimensional network structure itself (FIGS. 2 and 3).

Furthermore, the soft sheet (4) of the present invention is pasted on the upper layer of the composite plate side O, and its hardness and thickness are 9 in JIS hardness (JIS-6301, A type).
It is in the range of 0 to 20°5 to l+1l11. This soft sheet: hit the floor surface! The applied N force at 2 o'clock is applied to the surface of the decorative thin-layer wooden board (it is a material that can be easily softened and has a hardness of 9).
If the hardness is less than 0, it will be too hard and the gentle effect will not be achieved.On the other hand, if the hardness JT is less than 20, it will be too soft and the stepping feeling will be 71.
This is different from flooring materials and is excluded from the scope of the present invention, and depending on the material, under high temperatures such as direct sunlight, dents may occur due to flow when a large n1 is applied from above. , undesirable as flooring material.

Moreover, the thickness is in the range of 5 to 1 mm. If the hardness exceeds 51, the wooden floor material will not feel good when stepped on, and the puncture strength of the surface decorative thin layer (,1) will be weakened, which is not preferable as a wooden floor of 71+1.

Furthermore, when the thickness is 1mm or more, there is a function to reduce the force applied! +l'Ino is no longer possible, so reduction of floor impact noise cannot be expected.

As a geofamily of such soft sheets, polysalt IL
Synthetic resins such as vinyl and synthetic rubbers such as S[3R, BR, N[3R, etc.] are used, and various oils, II) plasticizers, fillers, etc. are blended so that the hardness meets the purpose of the present invention. A sheet formed is used.

This soft 71 sheet is made of decorative thin wood 71 board) (5)
An adhesive is usually used to insert and fix the soft sheet into the opening of the wooden board (1). There is no need to use it.

The decorative thin-layer wood board material (5) used for the surface is not particularly limited, but is generally parquet plywood.

Selected from Hegi board, cedar decorative plywood, various veneer boards 2 synthetic wood ← O, etc., and the thickness is usually hard + about 0.2 ~ l + w11
s r't is preferably used. When the material becomes thicker, the buffering effect of the south impact force by the soft sheet in the F layer becomes less effective. In addition, since this decorative wood board material is thin, the back side may be reinforced with Japanese paper, woven fabric, non-woven fabric, etc. to prevent cracks from occurring from the wood grain due to heat, light, etc.

Note that the soundproof flooring material according to the present invention may be a structure formed by laminating these constituent materials in advance, and on-site,
It may be a structure formed by forming h1 layers of each of these constituent materials.

Effects of the Invention The soundproof flooring material according to the present invention thus obtained is particularly suitable for concrete and ALC floors, and is suitable for use with glass wool and IIJ, which have conventionally been used as floor impact noise prevention structures. Wet type floating floor structure such as Tsuku 1 Cool, rubber block, dry type such as :r Mbat? Compared to a 7-floor structure, the construction period is shorter and the three-dimensional mesh IJ! It is possible to absorb the undulation of the concrete surface through the action of the structure, and effectively reduce floor impact noise 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:

Examples - The present invention will be described in detail below with reference to Examples.

Example 1.2 and Comparative Example 1.2 Slab thickness of concrete apartment complex 150 mvaG)
Concrete 1 - Flooring materials with the composition shown in Table 1 below are laid without gaps between 6 tatami mats, and JIS A 1418
(Method for measuring the impact sound on the floor at the IJI site of the building) In 2, the impact sound from the cod pink machine from above was measured.In addition, the three-dimensional structure used in Table 1 The network structure is made from nylon filaments,
It has a dynamic stiffness test value of 65 N/c +2 cm, the viscoelastic body is made of butyl gono, and the soft sheet has a hardness of 5.
0.0 hardened vinyl chloride was used.

Further, as the wood-based board material, plywood was used with the thickness shown in Table 1, and as the decorative thin-layer board material on the surface, a veneer board with a thickness of 0.25 m was used. The measurement results are shown in Table 2.

The loss coefficients of the plywood portions of Example 1.2 and Comparative Example 1.2 were 0.25, 0.32, and 0.01, respectively.

0, Ol was there. (The loss coefficient was calculated from the half & [11+ of the mechanical impedance near the resonance 11.) The following margins are used.Example 3 and Comparative Example 3 A floor with the configuration shown in Table 3 in the same concrete housing complex as the example shown above. A similar test was conducted by laying the wood on a 6-tatami mat without any gaps. The results are shown in Table 11.

The viscoelastic body used in this example was the PVC-based anti-corrosion material Sansun DM (manufactured by Zeon Kasei Co., Ltd.), and the three-dimensional network structure and soft sheet were the same as in the previous example.

The loss 1-v- numbers of the plywood portions of Example 3 and Comparative Example 30 in Table 3 were 0.25 and 0.01, respectively.

Table 71

[Brief explanation of the drawing]

1 to 4 are partial cross-sectional views showing examples of soundproof flooring materials according to the present invention. In the figure, (1) and ([') are wood-based boards, (2) is a viscoelastic material for controlling plywood, (3) is a three-dimensional network structure, and (4) is a soft sheet) , (5) indicates a decorative thin-layer wood board material. Fig. 1q Fig. 30 ζ Fig. 2 Fig. 4 1.1' Wood board 2 Viscoelastic body 3 Three-dimensional network structure 4 Soft sheet 5 Decorative thin layer Wood board 6.6' Nonwoven fabric

Claims (1)

[Claims] (1) Metal filaments or synthetic or natural fibers are interlaced in the lower layer of the composite board surface that has been treated to have a loss coefficient of 0.05 or more by laminating a viscoelastic material in the middle or on one or both sides of the wood board. A composite soundproof flooring material comprising: a three-dimensional network structure formed by the above process, and a decorative thin-layer wood board with a soft sheet laminated on top.