JPH0493461A - Sound insulating floor plate made of wooden material - Google Patents

Abstract

PURPOSE:To reduce the light impact noise and heavy impact noise of a floor by constituting a floor member used for a house, etc., by laminating a vibration cutoff sheet, wooden substrate plate and a buffering plate on the undersurface of a wooden surface plate and integrating them. CONSTITUTION:A floor member is constituted by laminating a vibration cutoff sheet 2 coated with a thin film of rubber and synthetic resin at least its one side and a wooden substrate plate 3 having a plurality of cut grooves 31, and a buffer plate 4 consisting of a nonwoven mat, and by integrating the lamination with the undersurface of a wooden surface plate 1. If necessary, a foamed resin sheet is interposed between the buffering plate 4 and the substrate plate 3. Accordingly, a floor member having the superior sound insulating performance can be obtained.

Description

[Detailed description of the invention] (Industrial application field) Regarding the floorboards to be translated, Especially light floor impact sound - both 7 The present invention relates to a wood sound insulating floorboard IC that can reduce noise.

(To be solved by the prior art and the invention! III) Conventionally, as a wooden sound insulating floorboard for reducing floor impact noise, as described in, for example, Japanese Utility Model Application Publication No. 1-159048, *i It is known that a base plywood with receipt grooves and a buffer board are laminated and integrated in order, and 1. The resin sheet is made of foam or a soft sheet, the grooves of the base plywood are made deep, or a large number of pieces are cut. Or 111. Lightweight floor impact noise was reduced by making the Li board thicker and softer.

However, such floorboards are soft and fluffy, resulting in poor floor stability, and although the sound insulation performance against lightweight floor impact noise is improved, the performance is unstable and difficult to maintain.

In particular, such floorboards have a problem in that their sound insulation performance is extremely poor at a specific frequency (generally 500 Hz) when weight impact vibration is applied, resulting in deterioration of the sound insulation grade for the impact sound of the stacked floor.

The instability of the sound insulation performance during light impact vibration and the deterioration of the sound insulation class #1 during weight impact vibration is caused by the compression and repulsion of the *i sheet between the wood decorative board and the base plywood due to the impact #O blow. This is thought to be due to the fact that this bounce causes the underlying plywood to vibrate, which further resonates with the soft buffer board at the bottom, amplifying the impact vibration and propagating it to the floor base. From this, suppressing the above-mentioned bounce is important for stabilizing the impact sound insulation performance of the lightweight method and improving the sound insulation performance during weight balance vibration excitation (7a)! [It turned out to be.

Furthermore, as described in JP-A No. 2-30848, a fiber J11 resin composite consisting of a soft resin and bulky elastic fibers such as nonwoven fabric or felt is placed on the lower surface of a wood-based surface material, separated by a separation strip. There are floorboards in which plywood and cushioning material are sequentially laminated and fixed together, but since the fiber resin composite is a bulky material with a cushioning force, the plywood will vibrate due to the rebound effect as described above. , the origin is that the impact vibration is amplified and the sound insulation performance deteriorates.

In view of the current situation, the present invention minimizes the rebound effect due to the compression and repulsion of the sheet provided in the middle of the floorboard @Ic, thereby achieving the lightweight floor impact sound insulation grade LX, -45, by the Japan Military Construction General Testing Institute. Heavy floor impact sound insulation, etc. @LH
The purpose of the present invention is to provide IMO wood sound insulating floorboards that satisfy -55.

(Means for Solving Problem 11) 1. In order to solve the problem, the wooden sound insulating floorboard of the present invention has a vibration isolating sheet, a wooden base board, and a buffer board successively laminated and integrated on the bottom surface of the wooden surface board. The vibration isolation sheet is made of a woven fabric with a thin coating of rubber or synthetic resin formed on at least one side, or a woven fabric whose fibers have been previously treated to be water-repellent. Grooves and/or through holes are provided at predetermined intervals. Preferably, the buffer plate is made of a non-woven mat with no intertwined fibers, or a foamed resin sheet is inserted and fixed between the wooden base plate and the buffer plate.

(Function) According to the present invention, when an equal vibration is applied from above, the shock Wc#J is blocked by the fine air thin film formed within the woven fabric of the vibration isolation sheet, and the shock Wc #J is extremely strong. The occurrence of rebound due to the compression and repulsion of the small vibration-isolating sheet is significantly restricted, and the vibration of the wooden base board is significantly suppressed. For this reason, there is no need to force the bottom layer of the buffer board to be soft in order to absorb shock, and this also creates a virtuous cycle in which resonance of the wooden base board and impact vibration amplification are less likely to occur.

As a result, the impact vibrations propagated to the floor base are reduced, and the sound insulation performance is increased by m1.

(4 examples) The present invention will be described below with reference to the drawings.

In the drawing, fi+ is a wooden surface board, (2) is a fi + /b
Blocking sheet, (31 is a wooden base board, 14) is a buffer board,
+I+ is a foamed candy sheet.

Woody! ! The face plate (1) is made of plywood, wood fiberboard, etc.
Generally, a veneer or the like is pasted to the surface to provide surface decoration. The wooden back plate il+ is generally an elongated plate (for example, 75 cm in width and 900 cm in length) with a thickness of 2 to 5 m.

The vibration isolating sheet (2) is sandwiched between the wooden surface plate il+ and the wooden base plate (3) and is integrally laminated.

The vibration isolation sheet (2) has a thin coating film formed on at least one side of a woven fabric (goods), and has a thickness of α5 to z5■. The woven fabric is made of synthetic stew fabric, natural fiber, or a blend of the two, preferably a plain weave fabric with a low cushioning force, and a narrow weave fabric is preferable to a coarse fabric fabric. The coating device is generally formed by thinly applying a low foaming latex rubber liquid to a woven fabric, but it may also be formed by applying a synthetic resin solution or a foaming synthetic resin FiI solution. In addition, the vibration isolating sheet (!1 may be a woven fabric whose fibers have been previously treated with water repellent such as silicone!R resin. In other words, the vibration isolating sheet (! Coating 1j15 as a treatment that does not impregnate the adhesive for inserting and bonding between the surface board ill and the wooden base board (3)
Alternatively, a water treatment layer may be formed. In addition, this vibration isolation sheet (2) can be used with the wooden surface board (1) or the wooden base board (
3) may also be inserted within.

The wooden base board (3) is made of plywood, wood fiberboard, etc., and is generally a long thin board with a thickness of 3 to 10 cm (for example, 75 cm wide, 9 cm long).
00 m). The wooden base board +31E has a plurality of grooves 11!1 provided at predetermined intervals on the back surface, which reduces the rigidity of the wooden base board (3) and makes the board itself soft, making it difficult to shake from the top. The area of the IF1 is reduced to reduce the amount of sound produced. The grooves are 10lk#c width 1 to 3. For example, in the case of Fig. 1, the grooves extend in the width direction of the wooden base board (3), and the grooves extend in the length direction of the wooden base board (3). They are set at a pitch of 30 to 100 square meters. The kerf aLl may be provided to intersect vertically and horizontally, or may be of a penetrating type, or may be of a semi-penetrating type. The cross-sectional shape of the cut groove υ may be any suitable shape such as a V-shape, a U-shape, or an inverted V-shape. Furthermore, instead of the kerf grooves, a plurality of through holes having a diameter of 10 to 30 mm may be provided at intervals of 30 to 50 am.

Further, both the cut groove υ and the through hole may be provided.

The buffer plate 14) is integrally adhered to the lower surface of the wooden base plate (3). The buffer plate (4) is made of a non-woven fabric made of fibers, and has a thickness of 5 to 6 mm and has not been subjected to needling treatment.
- The nonwoven fabric mat is preferably used from the viewpoints of cushioning power, vibration isolation property, and pressure resistance. In addition, as the buffer plate (4), foamed composite v1. A buffer plate made of oval resin, soft rubber, or a laminate thereof, or a buffer plate provided with unevenness, grooves, or perforations may be used.

fI+ is a wooden base board (3 foamed resin sheets) as shown in Figure 3.
) and the buffer plate (4+), and although it is not necessarily required, its presence improves the sound insulation performance and is preferable. A sheet, a foamed resin sheet with a high ratio wI #5 quality, etc. is used, and the thickness is generally 05 to 2 cm.This foamed resin sheet iI+ may be attached to the bottom surface of the buffer plate (4). , In this case, an anti-I! effect can be imparted, which is preferable.

The wooden sound insulating floorboard of the present invention may be used as a single elongated board or a wide board, or a plurality of these may be used in combination in parallel. Further, although the wooden sound insulating floorboard of the present invention is generally constructed by laminating and bonding together in advance, each layer may be laminated and assembled separately at the construction site.

FIG. 4 is a graph showing the light floor impact sound level and heavy floor impact sound level (JIS-A-1418, concrete slab thickness 150 cm) of the wooden sound insulating floorboard of the present invention. The wooden sound insulating floorboard shown in Figure 1 was used as an example, the wooden surface board was bound to a thickness of 25cm, and the vibration isolation sheet was a plain weave fabric with a low foaming latex rubber liquid coated on one side to a thickness of 1cm.
As a proverbial sheet, the wooden base board is 5.5cm thick, the cut groove is 3.5cm deep, and the width L5m is set at a pitch of 50M as a semi-circular type, and the buffer board is 5cm thick without interlacing treatment. The entire floorboard is made of a non-woven mat with a thickness of 14 mm and a width of 75 mm.
The length was 900cm. As a comparative example, FIG. 4 also shows a graph for a floorboard in which a foamed soft resin sheet with a thickness of 1 m-2 was used in place of the vibration isolation sheet, and the rest was the same as above. ! ! ! In Figure 4, letters in English indicate examples, and dashed-dotted lines indicate comparative examples.

(Invention ■ Effects) The copper and wood sound insulating floorboards of the present invention detailed above have a thin coating of rubber or synthetic resin formed on at least one side of the woven fabric between the wood surface board and the wood baseboard. It is made of woven fabric whose material or fibers have been treated to be water repellent in advance! Since the I-blocking sheet is interposed, when the vibration is applied from above, there is no compression or repulsion of the sheet as in the case of conventional methods, and the vibration of the wooden base plate is suppressed, eliminating the vibration itself. This makes it possible to reduce the heavy floor impact sound level at a frequency of 500 Hz, and also to reduce the light floor impact sound level as a whole, thereby increasing the sound insulation performance to almost its ultimate value.

Furthermore, since the bottom layer of the buffer board is made of a non-woven mat with no fiber entanglement, by making the buffer board only 5 to 6 inches thick, it can be placed on the floor directly below the 150 mm thick concrete floor base. Lightweight, heavy floor impact sound LL 45*
a. It can achieve a high-performance sound insulation grade of LH-55 grade (sound insulation grade by the Japan Building Research Institute), and the above sound insulation performance can be obtained by making the floorboard itself thin and simple in structure.

In addition, since the buffer plate can be made to have the thickness f [of the above 5 to 6 pieces,
When installed on a floor base, the feeling of walking will be lower, and it will be difficult to install furniture etc.
, #igin has less sinking, and the overall thickness of the floor plate can be made thinner, so it can be used without any problems when building a new building such as a condominium, etc. without lowering the height of the room. can.

[Brief explanation of drawings]

Fig. 1 is a -S notched perspective view showing one example of the wooden sound insulating floorboard of the present invention, the second figure is a cutaway sectional view of the same part, and Fig. 3 is a CL large-scale embodiment of the wooden sound insulating floorboard of the present invention. Part cutaway sectional view, 4th
The figure is a graph showing the sound insulation performance of the wooden sound insulation floorboard of the present invention. l...Wood surface board, 2...Vibration #blocking sheet, 21
... Woven fabric, 22... Paint film, 3... Wooden base board, 31
... Cut groove, 4 ... Buffer plate, 5 ... Foaming #ll receipt chart

Claims (1)

[Claims] 1) A vibration-isolating sheet, a wooden base plate, and a buffer plate are sequentially laminated and integrated on the lower surface of the wooden surface board, and the vibration-isolating sheet has rubber or synthetic material on at least one side of the woven fabric. A wooden sound insulating board with a thin resin coating or a woven fabric whose fibers have been previously treated to be water repellent, and a wooden base board with a plurality of grooves and/or through holes spaced at predetermined intervals. floorboards. 2) The wooden sound insulating floorboard according to claim 1, wherein the buffer board is a nonwoven mat with no fiber entanglement. 3) The wooden sound insulating floorboard according to claim 1 or 2, wherein a foamed resin sheet is inserted and integrated between the wooden base board and the buffer board.