JPH0296055A - Sound-resisting woody flooring - Google Patents

Abstract

PURPOSE:To increase sound-resisting efficiency by pasting a fiber mat constituting a foundation cloth entwined with cottony fibers directly or through a buffer sheet and an intermediate woody plate and a foam sheet subsequently on the inside of a woody plate to form floorings. CONSTITUTION:A fiber mat 4 consisting of a foundation cloth 2 entwined with cottony fibers 3 and a foam sheet 6 provided with a lot of projections 5 are subsequently pasted on the inside of a woody plate 1. A sheet 7 with sound- resisting efficiency, vibration controlling efficiency of buffer efficiency and an intermediate body plate 8 may be inserted between the woody plate 1 and the fiber mat 4. A perforated woody plate is used as the intermediate woody plate 8, and the sound-resisting efficiency is increased. The woody plate 1, sheet 7 and intermediate woody plate 8 are held together as a unit, dividing it into scantlings to combine, so that the sound can't be transmitted, and such a constitution as having further sound-resisting efficiency may be available.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a sound-insulating wood-based flooring material suitable for being applied directly to a concrete flooring material.

[Prior Art] Conventionally, the floors of mid-to-high-rise residences have often been made by directly pasting carpets to concrete floors through felt. However, carpets tend to get dirty easily, and mites are a problem.

Therefore, instead of pasting carpets, floors have been constructed by directly pasting wooden flooring materials with a foamed polyurethane sheet of about 2 mm thick on the back side attached to the concrete floor. They had the disadvantage of impairing livability due to their inferior sound insulation properties compared to similar types.

[Problems to be Solved by the Invention] As a result of daily research aimed at solving the above-mentioned problems and providing a wood-based flooring material with excellent sound insulation properties, the present inventor found that cotton-like fibers were used as the base fabric. This invention was completed after learning that a material made by laminating a foamed sheet and a m-fiber mat entwined with the same material is effective in improving sound insulation.

[Another means to solve the problem] This invention provides a sound-insulating wooden floor, characterized in that a fiber mat made of a base cloth entwined with cotton fibers and a foam sheet are successively adhered to the back side of a wooden board. Related to materials.

Hereinafter, the sound-insulating wooden flooring material of the present invention will be explained in detail with reference to the drawings. In FIG. 1, reference numeral 1 denotes a wooden board, and a fiber mat 4 made of a base fabric 2 entwined with cotton fibers 3 and a foam sheet are successively adhered to the back surface of the wooden board 1.

As the wood board 1, plywood, particle board, hardboard, LVL (parallel plywood), etc. can be used, and a precious wood veneer, a decorative synthetic resin sheet can be pasted on the surface, or it can be painted. A decorative layer may also be formed.

Further, as the base fabric used for the fiber mat 4 in which the base fabric 2 is entangled with the cotton fibers 3, a woven fabric made of synthetic resin such as polyethylene or polypropylene is preferable. Synthetic resin fibers such as polyester and polypropylene are preferred in terms of waterproofness and durability, but are not limited thereto.

As the foamed sheet 5, a foamed sheet made of synthetic resin such as polyurethane resin, polyethylene resin, or synthetic rubber, or a foamed sheet made of natural rubber can be used.

The thickness is preferably 1 to 7 mm, but is not limited thereto. If a large number of protrusions 6 are formed on the back surface of this foam sheet, the sound insulation performance can be further improved.

The foamed sheet 5 may be formed by applying a foamed resin composition to the back surface of the fiber mat 4 and then foaming it, or may be formed before being attached to the fiber mat 4. The thickness of both after pasting is preferably 4 to 10 mm. If the thickness is too thin, the sound insulation effect will be poor, and if it is too thick, there will be economic problems, but when renovating a house, the floorboards are so thick that they become higher than the threshold, making it virtually impossible to install, or the floorboards Another drawback is that the floorboards sink a lot when walking on them.

A sheet 7 and an intermediate wooden board 8 having sound insulating, vibration damping or buffering properties may be inserted between the wooden board 1 and the fiber mat 4. In this case, the thickness of the wood board 1 and the intermediate wood board 8 is 2.
The thickness is preferably 5 to 4.0 mm, but is not limited thereto. If the thickness is too thin, the rigidity of the floorboard will be a problem, and if it is too thick, it may not only increase the price but also cause problems during transportation and construction.

Examples of the sound insulation or vibration damping sheet to be pasted on the back side of the wooden board 1 include powdered PVC sheet, inorganic powder-filled rubber sheet, PVC sheet, etc., and the thickness is 0.8 to 2 ml.
1 is preferred. Further, the cushioning sheet may be any sheet having cushioning properties such as a natural rubber foam sheet or an olefin foam sheet, and the thickness thereof is preferably 1 to 2 mm.

Furthermore, if a perforated wooden board is used as the intermediate wooden board 8, the sound insulation properties will be further improved. The hole diameter of perforated wood board is 5 to 15
mm is preferable, but is not limited thereto. Although a single perforated wood board is effective, the sound insulation effect can be improved by bonding two perforated wood boards with their holes shifted.

Furthermore, as shown in Figure 4, a wooden board made by combining a surface wooden board, a sheet with sound insulation, vibration damping, or sound insulation properties, and an intermediate wood board, which are divided into smaller pieces, is smaller. It has better sound insulation properties than large-sized wooden boards that do not break.

This is thought to be because it becomes difficult for sound to propagate in the divided parts. The wood board cut into small pieces as described above has a loose tongue processing on the end surface that allows for slight bending, and a flexible hot plate is placed in the groove on the back side created by the tongue joint after hardening. They are joined by pouring melt resin 9, and a fiber mat 4 made of a base fabric 2 entwined with cotton fibers 3 and a foam sheet 5 are bonded to the entire back surface thereof.

[Example 1] On the back side of a decorative plywood board of size 30c+nX 90cm and thickness of 7.5H, a 3 mm thick fiber mat made by intertwining polyester cotton fibers with a polypropylene base fabric using a needle punch method and a large number of irregularities on the back side were placed. A desired flooring material was manufactured by laminating foamed polyethylene sheets (independently foamed sheets are preferred in consideration of waterproofness) with a thickness of 5 mm.

[Example 2] Size 30 cm x 90 cm, decorative plywood 2.8 mm thick, natural rubber foam sheet 2.0 mm thick, 2.7 mm thick
mm, on the back side of perforated plywood with a hole diameter of 10 mm, a 3 mm thick fiber mat made by intertwining polyester cotton fibers with a polypropylene base fabric using a needle punch method, and a 5 mm thick foamed polyethylene sheet with many irregularities on the back side ( A desired flooring material was manufactured by pasting together sheets (closely foamed sheets are better in terms of waterproofness).

[Example 3] After sequentially bonding the wooden board, foam sheet, and perforated wooden board used in Example 2, this was cut to a thickness of 7.5 mm.
Elongated rectangular plates with a width of 80 mm and a length of 900 mm were manufactured, and five of these plates were slightly shifted in the vertical direction and joined using male and female grooves. The male and female grooves are slightly bent at the joint and are loosely joined to conform to the unevenness of the base, and there is also a hot glue that has some flexibility after curing in the groove on the back of the joint. They were joined by injecting melt resin. Then, on the entire back side, there is a 3 mm thick fiber mat made of a polypropylene base fabric intertwined with polyester cotton fibers using a needle punch method, and a 5+ nm thick foamed polyethylene sheet with many unevenness on the back side (in consideration of waterproofness, it is independent). The desired flooring material was manufactured by laminating the foam sheets (preferably foam sheets).

[Effects of the Invention] The measurement results of the sound insulation properties (lightweight floor impact sound level) of the floor materials obtained in Examples 1 to 3 and the ordinary concrete slab surface are as shown in FIG. 4, and the floor materials of the present invention It has excellent sound insulation properties.

[Brief explanation of the drawing]

1 to 3 are cross-sectional views showing a sound-insulating wooden flooring material according to an embodiment of the present invention, and FIG. 4 is a diagram showing the sound-insulating properties of the flooring material shown in FIGS. 1 to 3. In the drawings, 1 is a wooden board, 2 is a base fabric, 3 is a cotton fiber, 4 is an m-fiber mat, 5 is a foam sheet, 7 is a sheet having sound insulation, vibration damping or cushioning properties, 8 is an intermediate wood board, 9 indicates hot melt resin. Watch applicant Eidai Sangyo Co., Ltd. Ward 1 To N1 Transferred Ward C Matayabu

Claims (4)

[Claims] (1) A sound-insulating wood-based flooring material characterized in that a fiber mat made of a base fabric entwined with cotton fibers and a foam sheet are successively adhered to the back side of a wood board. (2) A sheet with sound insulating, damping or cushioning properties, an intermediate wood board, a fiber mat made of cotton fiber entangled with the base fabric, and a foam sheet are successively attached to the back side of the wood board. Sound-insulating wood flooring. (3) The sound-insulating wood flooring material according to claim 2, wherein the intermediate wood board is a perforated wood board. (4) Claim (1), (2) or (3) characterized in that a large number of protrusions are formed on the back surface of the foam sheet.
Sound-insulating wood flooring as described.