JPH0345446Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is used as interior wall material and exterior wall material of buildings. This invention relates to a sound-absorbing material for construction that is bent into a desired shape.

[Conventional technology]

There are two types of sound-absorbing structural materials of this type:

(a) As shown in Fig. 8, a glass wool mat (raw glass wool mat) 50 impregnated with 5 to 12% phenol resin in advance is guided between male and female molds 51 and 52 of the press, and heated to 150 to 200°C. By moving the two molds 51 and 52 close together with the addition of
The phenolic resin is cured and bent into a shape that matches the molding surfaces of the molds 51 and 52.

(b) As shown in FIG. 9, a composite material (FRTP) 53 made by adding a thermoplastic resin such as polypropylene, a glass fiber nonwoven fabric, and a filler is heated in advance by a heating device 54, and then the softened composite material 53 is guided between the male and female molds 55, 56 of the press, and by moving these two molds 55, 56 close together, the composite material 53 is cooled and hardened while the mold 5
Bending molding is performed to a shape that matches the molding surfaces of Nos. 5 and 56.

In the case of the former (a), since the entire glass wool mat is impregnated with phenolic resin, the resin penetrates into the open cells of the glass wool mat, reducing the heat insulation and sound absorption properties. Moreover, when the phenolic resin impregnated into the glass wool mat is heated, a considerable amount of water vapor and the irritating odor of free phenol, monomer, formalin, etc. are generated, resulting in a problem of deterioration of the working environment.

Also, in the case of the latter method, there was a problem that the thermoplastic resin penetrated into the open cells throughout the glass fiber nonwoven fabric, resulting in a decrease in heat insulation and sound absorption properties.

[Problems to be solved by the invention] The present invention has been made in view of the above-mentioned circumstances, and its purpose is to provide a sound-absorbing profile for construction that has excellent sound-absorbing and heat-insulating properties.

[Means for solving problems]

The characteristic structure of the sound-absorbing structural material according to the present invention is that thermoplastic resin is added only to the part corresponding to the bending molding between the main body and the side part of the fiber mat.
Its actions and effects are as follows.

[Effect]

In other words, the thermoplastic resin is applied only to the portion corresponding to bending between the main body and the side portion of the fiber mat, that is, the portion that has the greatest effect on holding the fiber mat in the desired shape, such as inorganic fiber nonwoven fabric. Since the fiber mat is added, it is possible to reliably mold the fiber mat into a desired shape and to minimize the intrusion of the resin into the open cells existing in the main body and side portions of the fiber mat.

As a result, it is possible to prevent the leakage of sound and the passage of heat over almost the entire area of the fiber mat.For example, by placing a plurality of bent fiber mats adjacent to each other and sandwiching their rising walls. In the case where the sound absorbing wall is constituted by a sound absorbing wall, even if sound or heat passes through the bent portion, the rising wall portion can reliably prevent sound leakage and heat passage.

[Effect of idea]

Therefore, it is possible to prevent the leakage of sound and the passage of heat over almost the entire area of the fiber mat, making it possible to provide a sound-absorbing material for construction with extremely excellent sound-absorbing and heat-insulating properties.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

To construct the architectural sound-absorbing material shown in FIGS. 1 and 2, a fiber mat 1 made of an inorganic fiber non-woven fabric such as glass paper (glass fiber paper) or an organic fiber non-woven fabric such as polyester is used. 1b
Bending forming equivalent portion 1 between and side portions 1c, 1c
d is a suitable width, and a thermoplastic resin TP is placed in a belt shape.
It is molded into the required shape with TP added.

Next, a method for manufacturing such a sound-absorbing structural material will be described.

First manufacturing method (a) As shown in Fig. 3, a glass paper 1, which is an example of a fiber mat, is continuously conveyed by a conveyor roll 2A, and a portion 1d corresponding to bending is carried out.
Width of 3m/m or more, preferably 5-10m/m
After attaching thermoplastic resin TP such as vinyl acetate, its copolymer, polyamide, etc. in a striped manner with a certain width, it is dried and hardened. The resin solid content at this time varies somewhat depending on the weight per unit area of the glass paper 1, but it contains approximately 15% or more in weight% [(resin solid content) / (glass paper weight) + (resin solid content) x 100] It is necessary to do so. The content is preferably about 20%.

Methods for adhering thermoplastic resin TP include a coating method using a roller coater and a flowing method.

(b) Next, the portion of the continuously conveyed glass paper 1 to which the resin is attached is heated to a temperature higher than the heat deformation temperature (for example, in the case of vinyl acetate, it is approximately 110 to 120° C.) and formed into a desired shape. In other words, the fourth
As shown in FIG. 5, a conveying/forming roll 2B is formed on the conveying path of the glass paper 1 so that its conveying surface becomes closer to the desired bending shape as it goes toward the lower side of conveyance. 2C and holding rolls 2D and 2E configured in a shape and size corresponding to the forming surfaces thereof, and heaters for heating the resin-attached portion of the glass paper 1 are provided on the forming rolls 2B and 2C. While the glass paper 1 is continuously conveyed, the thermoplastic resin TP attached to it is
At the same time, the forming roll 2
B, 2C cooperates with presser rolls 2D, 2E to apply bending stress to form the desired shape.

(c) After passing through the final forming roll 2C, the continuous glass paper 1 is transported to a predetermined size after being transported by a transport roll of the same shape that is cooled until the thermoplastic resin hardens. This makes it possible to efficiently manufacture products as sound-absorbing structural materials in assembly lines.

Second manufacturing method (a) As shown in FIG. 6, while the glass paper 1 is continuously conveyed by the conveyor 2, the creases a and a are made with the crease forming tool 3 at the portion corresponding to the bending. A heat-sensitive adhesive (hot melt adhesive) TP made of thermoplastic resin is applied continuously or intermittently to the locations where the streaks a and a are formed so that the heat-sensitive adhesive forms a straight line or a dotted line.

In addition, when continuously applying such a heat-sensitive adhesive, the width is preferably 3 m/m or more,
Additionally, along with this, an adhesive of 1.5 g/m or more is required.

It is also preferred to apply the heat-sensitive adhesive intermittently, as this saves consumption of the heat-sensitive adhesive. Here, the required strength of the molded article can be sufficiently ensured by adjusting the amount of one coat and the interval between coats depending on the thickness, density, etc. of the glass paper. For general glass paper, if the amount applied at one time is about 2 mm in diameter, a gap of 7 to 8 mm can be obtained.

(b) A pair of left and right guide forming plates 4a, 4a of the forming tool 4 provided on the conveyance path of the glass paper 1 bend and form the continuously conveyed glass paper 1 into a desired shape along the lines a, a.

Note that the guide forming plates 4a, 4a of the forming tool 4
is set to a length that allows the heat-sensitive adhesive to harden sufficiently.

The shape of the architectural sound-absorbing profile is not limited to that of the above-mentioned embodiments, and may be configured, for example, as shown in FIGS. 7A to 7B. In addition, among these shapes, the left and right side edges 1 of the ones shown with
By impregnating a and 1a with a flexible plastic, elastomer, etc., it is possible to construct a structure that can be nailed or bolted.

Next, another example will be described.

A decorative material that does not impair sound absorption properties relatively, such as a reinforcing material and decorative material such as glass cloth, ordinary cloth, or a thin film of plastic, may be laminated to the surface of the formed architectural sound-absorbing material. In the case of this embodiment, the value as an interior material can be increased. In addition, if the material is selected appropriately, deterioration in fire resistance can be prevented to some extent.

In the above embodiments, inorganic fiber nonwoven fabric was mainly described as the fiber mat 1, but the invention is not limited to this. For example, acetic acid with a low heat deformation temperature is added to a relatively heat-resistant organic fiber mat (polyester, etc.). It may also be impregnated with EVA, a copolymer of vinyl and polyethylene, and molded into the desired shape.

A fluorine compound film or the like may be bonded to a sound-absorbing material for construction so that it can be used as an exterior material.

[Brief explanation of drawings]

FIGS. 1 and 2 are front views showing an embodiment of the sound-absorbing structural material according to the present invention before and after bending. 3 to 5 are front views showing the steps of the first manufacturing method, and FIG. 6 is a perspective view showing the second manufacturing method. FIGS. 7A to 7G are front views showing the cross-sectional shapes of architectural sound-absorbing sections, respectively; FIGS.
FIG. 9 is a process diagram showing a conventional method of manufacturing sound-absorbing structural members. 1... Fiber mat, 1b... Main body of fiber mat, 1c... Side portion of fiber mat, 1d... Portion equivalent to bending molding, TP... Thermoplastic resin.

Claims (1)

[Claims for Utility Model Registration] 1. Main body 1b and side parts 1c, 1c of fiber mat 1
A sound-absorbing material for construction with thermoplastic resin TP added only to the part 1d corresponding to the bending molding between. 2. The architectural sound-absorbing material according to claim 1, wherein the fiber mat 1 is a nonwoven fabric. 3. The architectural sound-absorbing material according to claim 1, wherein the fiber mat 1 is an inorganic fiber. 4. The architectural sound-absorbing material according to claim 1, wherein the fiber mat 1 is an organic fiber.