JP2506378Y2 - Sound absorbing material Surface material - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a surface material for finishing the surface of a sound absorbing material such as a fibrous web or glass wool to make an interior material.

[Conventional technology]

As the sound absorbing material, other porous materials such as fiber web, rock wool, glass wool, polyurethane foam, etc. are used (Shokai Sho 51-105118).

The appearance of these other porous materials does not generally have decorative properties,
Plastic foams such as polyurethane foam easily burn and cannot be used as interior materials.Flame-retardant fiber webs, especially rock wool and glass wool are non-combustible but made of brittle inorganic fibers, so they are wear-resistant. It has no sex.

[Problems to be solved by the invention]

Therefore, in order to obtain a flame-retardant sound-absorbing material that can also be used as an interior material, a flame-retardant fiber web, rock wool, or glass wool should be mounted on the surface. It is considered that the cloth wall covering is overlaid on a sound absorbing material such as glass wool (Japanese Patent Laid-Open No. 527742).
1).

However, even if the cloth itself is highly breathable, the sound absorbing property of the sound absorbing material is not impaired, but the paper backing the sound absorbing property significantly impairs the sound absorbing property. Therefore, it is not preferable to use the cloth wall covering as the surface material of the sound absorbing material.

Japanese Patent Laid-Open No. 55-81199 discloses a method of directly using a cloth for wall covering without backing the paper, and it is conceivable to install a sound absorbing material according to the method, but the cloth not backed by the paper Is extremely flexible and it is difficult to stretch the cloth on the surface of the sound absorbing material by aligning the texture in a certain direction.

[Problems to be solved by the invention]

Therefore, an object of the present invention is to obtain a cloth surface material that does not impair the sound absorbing characteristics of the sound absorbing material and can be neatly aligned without being inclined and bent and can be attached or stretched on the surface of the sound absorbing material.

[Constitution of device]

The sound absorbing material surface material 15 according to the present invention is configured by laminating the cloth 11 and the paper 12, and the paper 12 has one or more cracks 13 continuing to the front and back per 1 cm ² , and by the crack 13. 1 cm ² of uncut paper part 14 with an area of 16 mm ² or more
It is characterized by having one or more places for each.

The cloth 11 is made of a woven fabric, a knitted fabric, or a non-woven fabric as long as it has air permeability to such an extent that the sound absorbing property of the sound absorbing material 16 is not impaired and has a required decorative property to make up the surface of the sound absorbing material 16. Any of them may be used, or a plain fabric having no design pattern such as a woven pattern or a print pattern may be used.

It is preferable that the cloth 11 has 50% by weight or more of fibers having a moisture absorption rate of 20% or more, and the paper 12 has 50% by weight or more of pulp-containing cellulosic fibers.

The reason is that the surface material 15 is made hygroscopic, so that it absorbs moisture when it is humid and releases moisture when it is dry, and it absorbs sound.
22 surface material with humidity control that keeps the humidity of the environment in which it is used
This is because it is given to 15.

As such fibers having a moisture absorption rate of 20% or more, natural fibers such as cotton, hemp, wool and silk, and chemical fibers such as rayon, cupra and acetate are used.

The "moisture absorption rate" here means the moisture content of the fiber when the relative humidity is 95% RH.

The paper 12 may include chemically synthetic fibers in addition to pulp fibers.

The fabric 11 and the paper 12 may be finished by adding a flameproofing agent, an antifouling agent, an ultraviolet absorber, etc., and they can also be applied after the fabric 11 and the paper 12 are attached. .

The cloth and the paper should be adhered to each other with an adhesive agent 17. The adhesive agent 17 can be applied to the entire surface of the cloth and / or the paper, or can be applied to one of them in a dot shape. It is also possible to attach these by point-bonding.

The cracks 13 provide the surface material 15 with breathability that does not impair the sound absorbing properties of the sound absorbing material 16, and the cracks 13 are
The cracks 13 are preferably formed so as to extend over 3 mm or more, and the cracks 13 are formed on the entire surface of the paper so that the crack-free portions 14 of about the size of rice grains or adzuki beans are bordered by the cracks 13 and remain.

Such a crack 13 can be formed by sticking the paper 12 to the cloth 11 and then piercing the needle from the cloth side many times to such an extent that the space 18 ′ · 18 ″ between the needle holes is cracked. , It is better to use a spike roll with needles implanted or a needle punching machine that drives the needle plate to rock,
In that case, a large number of needle holes 18 may be preliminarily opened by a needle punching machine or the like and then passed through a beating or embossing roll to crack the inter-needle hole portions 18 ′ and 18 ″.

In such a crack 13 formed on the entire surface, the cloth 11 and the paper 12 are finely separated, and when the crack 13 becomes too dense, the form as paper is lost and the pulp on the back surface of the cloth 11 is short. As if crushed pieces of fibers or fine paper were sprinkled and adhered, the intended purpose of the present invention would not be achieved.

That is, according to the present invention, the paper 12 has a regularity and does not change even if it is a piece of paper (14) as small as a rice grain or a bean grain. When this is done, the fine paper pieces (14) join the warp yarn spaces 19 and 19 'and the weft yarn spaces 20 and 20' to stabilize the shape of the fabric 21, which prevents the fabric 21 from being skewed and bent. It was completed with the knowledge that it will be given to 11.

Therefore, the area surrounded by the finely formed cracks 13 is 16 mm.
^If a part of the paper 12 smaller than ² is spot-bonded to the only fiber thread 19 (21) that borders the fabric 21,
The intended purpose of the present invention is not achieved, and therefore, even if one or more cracks 13 are formed per cm ² , the cracks 13
Is a portion 14 with an area of 16 mm ² or more that is not divided by the crack 13, that is, a portion 14 with an area of 16 mm ² or more that does not have a crack.
However, it is essential that the adhesive be left on the paper 12 at one or more places per cm ^2, and in order to ensure that the portions 14 surrounded by the cracks 13 are regularly distributed, the adhesive 17 is used as dots (dots). ) -Shaped and the cloth 11 and the paper 12 are pasted together.

In the present invention, the portion 14 in which the crack 13 does not enter is
Between the warp and the weft that borders the fabric 21 like a building staff or braces.
It plays the role of stabilizing the shape of the cloth 21 by continuing 19/20, and its role does not change as much as the left depending on the thickness of the paper 12, and therefore the paper 12 has a basis weight (basis weight) like thin paper. Is 30
It is possible to use as thin as g / m ² .

However, the conventional cloth wall covering is made by bonding the backing paper 12 to the cloth 21, and the backing paper 12 has a basis weight of 80 to 100 g.
Although it is relatively thick as / m ² , it is also possible to form a crack 13 by closely piercing a needle into it, thereby making a sound absorbing material surface material 15.

In that case, if the needle is as thick as a normal sewing needle, a good result can be generally obtained by piercing at about 50 to 150 times / cm ² .

One or several needle holes 18 may be formed in the portion 14 which remains undivided by the crack 13 and serves to support the cloth 21 such as a cane or braces.

However, even if the needle hole 18 makes it easier to bend the paper 12 (14), it does not easily deform to the left in a direction parallel to the surface, and on the contrary, the needle hole 18 enhances the air permeability of the surface material 15, so that a desirable result is obtained. Will bring.

As a concrete example, when a conventional sewing needle is pierced into a conventional cloth wall upholstery at a rate of 70 to 90 times / cm ² and bent several times, 10 mm due to the adjacent needle holes 18 ′ ・ 18 ″. Long and continuous cracks 13 are formed 4 to 7 / cm ² and needle holes 1
2 to 5 parts / cm ^{2 of} a part 14 surrounded by cracks of rice grain size and adzuki bean size that does not cause cracks 13 even though 8 cracks are formed, and cloth wall upholstery (15) in which cracks 13 are formed is Thickness 25 mm, density 80 kg
A sound absorbing material that can be used as an interior material, with its sound absorbing properties being hardly impaired when superposed on glass wool 16 of / m ²
22 was obtained.

[Effect of device]

The surface material 15 according to the present invention is formed by laminating the cloth 11 and the paper 12 together. (1) The cloth 11 is a porous material that also serves as a sound absorbing material when stacked, and the paper 12 also has fine cracks. Since it has 13, it does not impair the sound absorption characteristics of the sound absorbing material 16. (2) The paper 12 is adhered to the cloth 11 in the form of a paper piece (14) having a size of 16 mm ² per 1 cm ² area of the cloth 11. On the other hand, the arrangement intervals of the fiber yarns that make up many fabrics 11 are
Since it is 1 mm or less, a piece of paper in the form of that piece of paper (14)
Plays the role of a cane or braces that joins the fiber threads 19 and 20 around the fabric, and stops the oblique bending of the fabric 21, so that the shape of the fabric 11 becomes stable and is attached to the surface of the sound absorbing material 16. It becomes easy to match or stretch.

(3) The cloth 11 has much higher wear resistance and durability than the sound absorbing material 16 such as glass wool.
Since it can also be used as an interior material, it imparts durability to the sound-absorbing material 16 such as glass wool and provides a commercial value as an interior material.

(4) When the cloth 11 and the paper 12 are made of a hygroscopic material such as rayon or pulp, since they are highly breathable as described above, they also function as a humidity control material.

(5) At the time of the crack 13, the cloth 11 and the paper 12 are finely separated, and the crack 13 is distributed over the entire surface.
13 makes it bulky, has a voluminous feel, and has moisturizing and heat insulating properties.

As described above, the surface material 15 of the sound absorbing material according to the present invention is convenient for the sound absorbing construction in the room, which has a volume feeling as well as a sound absorbing property, and a high ventilation humidity control and a high heat insulating property.

[Brief description of drawings]

FIG. 1 is an enlarged back view of the surface material of the sound absorbing material according to the present invention, and FIG. 2 is an enlarged cross-sectional view taken along the line XX 'in FIG. 11 …… Cloth, 12 …… Paper, 13 …… Cracks, 14 …… Parts, 15…
… Surface material, 16 …… Sound absorbing material, 17 …… Adhesive, 18 …… Needle hole, 19 …… Warp, 20 …… Weft, 21 …… Fabric, 22 …… Sound absorbing material.

Claims (2)

(57) [Scope of utility model registration request] 1. A fabric 11 and a paper 12 are bonded together,
An area where one or more cracks 13 are formed on each side of the paper 12 per cm ² and are not divided by the cracks 13.
A surface material for sound-absorbing material, characterized by having one or more paper parts 14 of 16 mm ² or more per cm ² . 2. A paper 11 comprising 50% by weight or more of a fiber having a moisture absorption rate of 20% or more and a paper 12 having a pulp-containing cellulosic fiber of 50% by weight or more.
There are 1 or more cracks 13 per 1 cm ² on both sides of 12 and the area is 16 mm ² which is not divided by the cracks 13.
A surface material for a sound absorbing material, characterized in that the above-mentioned paper portion 14 is provided at one or more places per cm ² .