JPH06108628A - Soundproof floor material - Google Patents

Abstract

PURPOSE:To display a soundproof function sufficiently by forming a cushion layer flexible in an extent abounding in water absorption properties onto the rear of a floor substrate and forming an infiltration preventive layer onto the rear of the cushion layer. CONSTITUTION:A cushion layer 2 of felt flexible sufficiently in an extent abounding in water absorption properties is stuck and fixed onto the rear of a floor substrate 1 composed of woody plywood. An infiltration preventive layer 3 made up of a nonwoven fabric impregnated with a synthetic resin is laminated and unified onto the rear of the cushion layer 2, thus shaping a soundproof floor material. Accordingly, an impact from the floor substrate is absorbed and a propagation sound is interrupted, and a soundproof function can be displayed sufficiently.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a soft cushion layer formed on the back surface, and is adhered to a floor base surface made of concrete, plywood or the like via an adhesive to exert a soundproof function. It relates to soundproof flooring materials.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 7, there has been known a soundproof floor material in which a soft cushion layer (b) is formed on the back surface of a floor substrate (a). In the soundproof floor material, the floor substrate (a) is made of wood plywood, the cushion layer (b) is made of felt, and the adhesive (c) is placed on the floor base surface (d) made of concrete, plywood, etc. It is directly applied by the adhesive. In this case, the soft cushion layer (b) absorbs the shock and blocks the propagating sound, so that the soundproof function is exhibited.

[0003]

However, in the above-mentioned conventional technique, the adhesive (c) before being cured penetrates into the cushion layer (b) and is cured in the cushion layer (b). The soft cushion layer (c) is hardened together with the adhesive (c), and the cushioning property is deteriorated so that the soundproof function is not exerted. In particular, when the cushion layer (b) is made of felt, the felt is extremely high in flexibility, but is also rich in water absorption in proportion to this, so that the problem becomes extremely remarkable. .

The present invention has been invented in order to solve the above-mentioned problems in the prior art, that is, the problem is that even if the adhesive is applied directly to the floor base surface through an adhesive, the adhesive is applied. The object of the present invention is to provide a sound-insulating flooring material that does not penetrate into the cushion layer, is reliably bonded and fixed, and the flexibility of the cushion layer is ensured so that the sound-insulating function is sufficiently exhibited.

[0005]

In the soundproof flooring of the present invention, a cushion layer that is soft enough to absorb water is formed on the back surface of the floor substrate, and the back surface of the cushion layer is prevented from permeating the adhesive. By providing the permeation layer, the above problem is solved by this configuration.

[0006]

In the soundproof flooring material of the present invention, a cushion layer that is flexible enough to absorb water is formed on the back surface of the floor substrate. The back surface of the cushion layer prevents penetration of the adhesive agent. Since the layer is provided, even if it is directly adhered to the floor base surface via an adhesive, the adhesive does not penetrate into the cushion layer, and a reliable adhesive fixation is made,
The cushion layer ensures the flexibility and sufficiently exhibits the soundproofing function.

[0007]

EXAMPLE A soundproof flooring material shown in FIGS. 1, 2 and 3 is an embodiment of the present invention, in which a cushion layer 2 which is soft enough to absorb water is formed on the back surface of a floor substrate 1 and the cushioning material is used. The permeation preventive layer 3 for preventing the permeation of the adhesive 7 is provided on the back surface of the layer 2.

The floor substrate 1 is made of wood plywood and has a thickness of 5 to 20 mm. Further, the cushion layer 2 is made of felt and is sufficiently flexible so as to have a high water absorbing property, and is formed as thick as 3 to 15 mm in order to enhance the soundproof function. The cushion layer 2 is adhered and fixed to the back surface of the floor substrate 1 with an adhesive. In this case, an appropriate amount of adhesive for adhering the two is used in the floor substrate 1 in the factory.
Since it is applied to the back surface of the cushion layer 2 and used, an excess adhesive does not penetrate into the cushion layer 2 and reduce the flexibility of the cushion layer 2.

Further, the permeation preventive layer 3 provided on the back side of the cushion layer 2 is made of a non-woven fabric impregnated with a synthetic resin,
It is formed integrally on the back surface of the cushion layer 2. In this case, as shown in FIGS. 4 and 5, the cushion layer 2
The permeation-preventing layer 3 and the permeation-preventing layer 3 are integrally formed in a sheet shape. That is, the felt which becomes the cushion layer 2 and the non-woven fabric which becomes the permeation preventive layer 3 are laminated in the preceding stage of the needling machine 8, and the needling machine 8
The sheet base material 9 is integrated into the sheet base material 9 and the back side of the sheet base material 9 (the side on which the nonwoven fabric serving as the permeation preventive layer 3 is laminated) is coated and impregnated with a synthetic resin by a coating roll 10. (In this case, since a proper amount of synthetic resin is applied and impregnated from the lower side by the application roll 10, the synthetic resin is impregnated only in the nonwoven fabric which becomes the permeation preventive layer 3 to reach the felt which becomes the cushion layer 2. Does not permeate), and the cushion layer 2 made of a soft felt and the permeation preventive layer 3 made of a nonwoven fabric impregnated with a synthetic resin are integrally formed in a sheet shape. The sheet-like material 12 is wound into a coil shape and temporarily stored, and thereafter cut so as to conform to the shape of the floor substrate 1, and the cushion layer 2 side is made of a wooden plywood which becomes the same floor substrate 1. It is attached to the back side.

The felt as the cushion layer 2 and the non-woven fabric as the permeation preventive layer 3 are similarly produced by a normal felt production line. That is, the raw material fibers are mixed in the mixing machine 13 in each of the preceding steps of laminating in the preceding step of the needling machine 8.
In a sheet, and then formed into a sheet in the card 14.

The soundproof flooring material of this embodiment is as shown in FIG.
A male part 4 and a female part 5 are formed on the peripheral edge of the floor substrate 1, and the male part 4 and the female part 5 are fitted to each other to be connected to each other. It is sequentially laid on the floor base surface 6 made of plywood or the like. Also, in this case,
As shown in FIG. 3, an adhesive agent 7 is interposed between the floor base surface 6 and the permeation preventive layer 3 on the back side of the cushion layer 2 of the soundproof floor material, and the soundproof floor material is bonded and fixed to the floor base surface 6. .

Therefore, in the soundproof flooring material of this embodiment, the cushion layer 2 which is soft enough to absorb water is formed on the back surface of the floor substrate 1, but the adhesive 7 is formed on the back surface of the cushion layer 2. Since the permeation-preventing layer 3 for preventing the permeation of the cushion layer 2 is provided, the adhesive 7 does not penetrate into the cushion layer 2 even if it is directly adhered to the floor base surface 6 through the adhesive 7. The permeation-preventing layer 3 and the floor base surface 6 are closely adhered to each other for reliable adhesive fixation, and at the same time, the flexibility of the cushion layer 2 is ensured and the soundproofing function is sufficiently exhibited. That is, the cushion layer 2 that retains the flexibility enough to absorb water absorbs the impact from the surface of the floor substrate 1 and blocks the propagating sound, thereby sufficiently exhibiting the soundproof function.

In the soundproof flooring material of the present invention, as shown in FIG.
The embodiment shown in FIG. That is, in the soundproof flooring material of this embodiment, the floor board 1 is formed by molding the sound insulation sheet 16 (a high specific gravity substance such as barium sulfate or lead powder is mixed in the soft vinyl chloride resin between the wooden boards 15). The cushion layer 2 is made of a flexible urethane resin foam made of open cells, and a soft vinyl chloride sheet is adhered to the back surface of the cushion layer 2 to form a permeation preventive layer. 3 is formed.

[0014]

As described above, in the soundproof flooring material of the present invention, since the back surface of the cushion layer which is soft enough to absorb water is provided with the penetration preventing layer for preventing the penetration of the adhesive,
Even if it is directly adhered to the floor surface via an adhesive,
The adhesive does not penetrate into the cushion layer, so that the cushion layer is securely bonded and fixed, the flexibility of the cushion layer is secured, and the soundproof function is sufficiently exhibited.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of essential parts showing a soundproof flooring according to an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view showing a construction state of the soundproof flooring material.

FIG. 3 is a sectional view of an essential part showing a construction state of the soundproof floor material.

FIG. 4 is a schematic plan view showing a part of the manufacturing process of the soundproof flooring.

FIG. 5 is a schematic side view showing a part of the manufacturing process of the soundproof flooring.

FIG. 6 is a cross-sectional view of essential parts showing a soundproof flooring according to another embodiment.

FIG. 7 is a cross-sectional view of essential parts showing a construction state of a soundproof flooring material which is a conventional example of the present invention.

[Explanation of symbols]

 1 Floor substrate 2 Cushion layer 3 Permeation preventive layer

Claims (1)

[Claims] 1. A soundproof flooring material comprising a floor substrate and a cushion layer which is soft enough to absorb water and is formed on the back surface of the floor substrate, and a permeation-preventing layer for preventing permeation of an adhesive is provided on the back surface of the cushion layer.