JP2573777Y2 - Insulating sound absorbing board and decorative sheet made of inorganic fiber - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating sound absorbing plate used for, for example, interior walls and ceilings of buildings, and a decorative sheet to be adhered to a surface layer of the heat insulating sound absorbing plate.

[0002]

2. Description of the Related Art Nonflammability, heat insulation,
In order to impart characteristics such as sound absorbing properties, inorganic fibers are used as fillings, lining materials and the like. For example, a glass fiber felt in which a small amount of a phenol resin, a urea resin, or the like is used as an adhesive and glass fibers are bonded to each other at cross points is known.

[0003] Glass fiber felt is usually formed into a cotton-like body to provide adiabatic sound absorbing properties. The glass fiber felt is not used for indoor interior as it is in a flocculent form, but is applied in a state where a skin layer such as a woven fabric is adhered to the surface.

Various proposals have conventionally been made to improve the properties and applicability of the glass fiber felt. For example, Japanese Utility Model Application Laid-Open No. 62-67733 discloses a flame-retardant adhesive between a sound-absorbing and heat-insulating substrate made of glass fiber felt and a skin layer. What is directly attached in is introduced. With this laminated configuration, a sound-absorbing and heat-insulating interior material excellent in humidity control and decorativeness can be obtained.

In Japanese Utility Model Publication No. 63-37366, Japanese Utility Model Publication No. 63-46868, etc., a shape retaining member is fixed to a side edge of a heat insulating sound absorbing plate made of glass fiber, and then glass paper is adhered thereto. Is flattened and covered with a skin layer. According to this method, a heat insulating sound absorbing plate having a uniform size and shape can be obtained.

[0006]

The irregularities on the front and back surfaces generated during the manufacturing process of the inorganic fibrous felt impair the aesthetic appearance of the product, and thus restrict the usage of the manufactured inorganic fibrous felt. Therefore, when used as a heat insulating sound absorbing plate proposed in each of the above-mentioned publications, after at least one surface of the inorganic fiber felt is pre-sliced or polished strictly with a belt sander to smooth the surface, and then the skin decorative sheet is used. It is necessary to provide layers and the like.

However, in the polishing using a slice or a belt sander, it is inevitable that partial irregularities remain on the surface of the inorganic fibrous felt. In addition, when a soft decorative sheet such as rayon cloth is directly bonded to the inorganic fiber felt, defects such as wrinkles, looseness, and distortion are likely to occur on the surface of the decorative sheet. In addition, even with the use of glass paper, the surface of the inorganic fibrous felt cannot be flattened by eliminating surface irregularities. Therefore, the occurrence of similar defects is still unavoidable.

[0008] Due to defects such as wrinkles, looseness, and distortion generated on the surface of the decorative sheet, the decorative pattern applied to the laminated decorative sheets is broken. This tendency is remarkable when a soft decorative sheet such as rayon cloth is directly adhered to the inorganic fiber felt. As a result, as a use such as a wall or a ceiling of a living space, a case often occurs as a defective product due to an aesthetic problem.

The present invention has been devised in order to solve such a problem. By interposing a mesh layer between the inorganic fibrous felt and the surface woven fabric, wrinkles, looseness, distortion, and the like are reduced. An object of the present invention is to provide a heat insulating sound-absorbing plate made of inorganic fiber, which can adhere a surface woven fabric without generating the same and has excellent surface properties.

[0010]

In order to achieve the object, the heat insulating sound absorbing plate made of inorganic fiber according to the present invention comprises an inorganic fiber felt made of glass wool fiber, rock wool fiber or ceramic fiber, and a surface of the inorganic fiber felt. A mesh layer in which non-combustible fibers are knitted in a grid with a mesh of a size selected in the range of 1 mm ^{2 to} 100 cm ² according to a certain unevenness, and a flame-resistant surface woven fabric are integrally bonded in this order. It is characterized by having a laminated structure. A laminate in which a similar mesh layer is integrally adhered to the back surface of a surface woven fabric containing flame-retardant organic fibers can be handled as a decorative sheet that is itself adhered to the surface layer of inorganic fibrous felt. .

The heat insulating sound absorbing plate made of inorganic fiber is a laminate having a three-layer structure of an inorganic fiber felt, a mesh layer, and a surface woven fabric. Further, the decorative sheet is a laminate having a two-layer structure in which a mesh layer and a surface woven fabric are laminated.

The inorganic fibrous felt is formed in a felt shape without weaving glass wool fiber, rock wool fiber, ceramic fiber, or the like. In the forming process,
Many fibers constituting the felt are fixed to each other by an adhesive such as a phenol resin or a urea resin at a point where the fibers intersect with the adjacent fibers.

The obtained felt becomes a plate-like body having two substantially flat planes. Due to the myriad of spaces inside the inorganic fibrous felt, excellent adiabatic sound absorbing properties are obtained. When rock wool felt is used as the inorganic fibrous felt, it is preferably formed to have a density of 80 to 200 kg / m ³ and a thickness of 5 to 35 mm.

[0014] The inorganic fiber felt can be used without any surface treatment for use as a general interior material. In applications such as hotels and boardrooms as interior materials that create a sense of luxury, after slicing, polishing using a belt sander, etc., at least one side of the inorganic fiber felt is smoothed, and then a decorative sheet is attached to the smooth surface. Is preferred.

The material and shape of the mesh layer are not limited as long as the mesh layer has a mesh. For example, a non-combustible glass fiber net, cold sand, or the like is used. As a particularly preferred mesh layer, a fiber having a diameter of about 0.5 mm, which is a bundle of glass wool, having a mesh size of about 3 to
There is a 50 mm glass net woven in a grid.

The size of the mesh is 1 mm depending on the size and the area of the unevenness formed on the surface of the inorganic fibrous felt.
It is appropriately selected in the range of ^{2 to} 100 cm ² . For example,
For an inorganic fibrous felt having irregularities of about 1 cm ^{2 on the} surface, a mesh layer having a mesh of about 3 to 4 cm ² is used. For an inorganic fibrous felt having a surface with irregularities of about 1 mm ² , a mesh layer having a mesh of about ² to 5 mm ² is used. The size of the material forming the mesh layer is appropriately selected according to the height of the protrusions on the surface of the inorganic fibrous felt, but fibers and threads having a diameter of about 0.1 to 10 mm are preferable in a normal state. .

As the surface woven fabric, for example, a cellulosic fiber woven fabric such as rayon, cotton and hemp is used. The surface woven fabric is subjected to flameproofing by immersing the fiber woven fabric in the flameproofing chemical, or by attaching the flameproofing chemical to the surface of the fiber woven fabric by spraying or the like. The flame retardant chemical is not particularly limited, but a chemical used in general flame retardant treatment for cellulosic fabrics, curtains, fabric wall coverings and the like is used. For example, there are inorganic or organic compounds containing flame-retardant elements such as halogen, phosphorus and antimony. In addition, by applying dyeing, coloring, pattern printing, etc. to the surface woven fabric,
The design can also be enhanced by giving the skin layer a texture and taste.

The mesh layer is integrated with the surface woven fabric by adhering to the back surface of the surface woven fabric in a state where an adhesive has been applied to one surface in advance. Alternatively, a long sheet-like mesh layer and a surface woven fabric may be bonded and integrated with a pressure roller, wound up on a take-up reel, and then cut into a desired size for use.

The decorative sheet in which the mesh layer is adhered to the back surface of the surface woven fabric, due to the reinforcing effect of the mesh layer, can prevent minute deformation that leads to the generation of defects such as wrinkles, looseness and distortion even when the surface woven fabric is soft. To prevent. If the surface of the inorganic fibrous felt has a convex portion, the convex portion is buried in the mesh of the mesh layer and does not adversely affect the surface of the surface woven fabric. Further, since the concave portion on the surface of the inorganic fiber is bridged by the material constituting the mesh layer, it does not cause a deformed portion such as a dent in the surface woven fabric.

By the action of the mesh layer, it is possible to increase the product yield from about 50%, which is conventionally caused by many defective products due to aesthetic problems, to 90% or more.
Also, when a decorative sheet is stuck to an inorganic fiber felt whose surface has been smoothed by polishing using a slice or belt sander, the influence of some unevenness remaining on the surface of the inorganic fiber felt is completely eliminated by the mesh layer. It is possible to manufacture a high-quality insulating and sound-absorbing plate product that is canceled out and has a product yield close to 100%.

[0021]

EXAMPLE A rock wool formed into a felt having a density of 150 kg / m ³ and a thickness of 25 mm was used as the inorganic fiber felt 1. The surface of the inorganic fiber felt 1 had irregularities of 10 mm ² or less. As the mesh layer 2, a diameter of about 0.5 mm obtained by focusing glass wool
A glass net was used in which the fibers were knitted in a lattice with a mesh size of about 10 mm.

Rayon cloth was used as the surface woven fabric 3. The rayon cloth was impregnated with a flame retardant mainly composed of a condensed phosphoric acid carbamate and a flame retardant mainly composed of a condensed carbamate sulfate to perform flameproofing and flameproofing.

As shown in FIG. 1, the mesh layer 2 was adhered to the surface of the inorganic fiber felt 1 with a styrene-butadiene rubber-based adhesive. Then, using the same adhesive, mesh layer 2
And a surface woven fabric 3 was laminated.

When the surface woven fabric 3 after lamination was observed, the surface woven fabric 3 was found to be flat without being affected by the unevenness on the surface of the inorganic fibrous felt 1. In addition, the printed pattern applied to the surface woven fabric 3 did not show any deformation such as wrinkles, looseness, distortion, etc. on the surface woven fabric 3.

Using a decorative sheet in which the mesh layer 2 was previously adhered to the back surface of the surface woven fabric 3, it was similarly adhered to the surface of the felt 1 made of inorganic fibers. Also in this case, the surface woven fabric 3 after lamination maintained a flat surface property.

On the other hand, when the surface woven fabric 3 is directly adhered to the inorganic fiber felt 1 without using the mesh layer 2, the irregularities on the surface of the inorganic fiber felt 1 are transferred to the surface woven fabric 3. Was done. Therefore, not only the obtained laminate had a bumpy surface, but also the pattern applied to the face woven fabric 3 was broken, resulting in poor surface properties which did not withstand use as an interior material.

[0027]

As described above, according to the present invention, a mesh layer in which non-combustible fibers are woven in a lattice pattern with a mesh corresponding to the unevenness on the surface of the inorganic fiber felt is made of the inorganic fiber felt and the surface woven fabric. And the unevenness on the surface of the inorganic fibrous felt is prevented from adversely affecting the surface properties of the surface woven fabric. Therefore, even if the inorganic fibrous felt has some irregularities, the bonded surface woven fabric has a flat surface and does not cause the pattern or the like applied to the surface woven fabric to collapse. . In addition, it is an interior material having excellent heat insulating properties, non-combustibility, sound absorbing properties, etc. unique to inorganic fiber felt.

[Brief description of the drawings]

FIG. 1 shows a layer configuration of a heat insulating sound absorbing plate made of inorganic fibers according to an embodiment of the present invention.

[Explanation of symbols]

Reference Signs List 1 inorganic fiber felt 2 mesh layer 3 surface woven fabric

──────────────────────────────────────────────────続 き Continuing on the front page (72) Creator Toshimitsu Nishito 341-Yawakawa, Taima-cho, Kitakatsugi-gun, Nara Prefecture (72) Mitsufumi Sugimoto 5-16, Tatsuta-Kita, Ikaruga-cho, Ikoma-gun, Nara Prefecture (56) References Opened Sho 62-67733 (JP, U) Opened Sho 52-142411 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) E04B 1/90 E04B 1/80

Claims (2)

(57) [Scope of request for utility model registration] (1) a glass wool fiber, a rock wool fiber or
Is an inorganic fiber felt made of ceramic fiber
And 1m depending on the irregularities on the surface of the inorganic fibrous felt
With a mesh of a size selected in the range of m ^{2 to} 100 cm ²
A mesh layer of non-combustible fibers woven in a grid and a flame-resistant surface
A heat insulating sound absorbing plate made of inorganic fiber having a laminated structure in which a woven fabric is integrally bonded in this order . 2. A surface woven fabric containing organic fibers subjected to flameproofing.
On the back side of the inorganic fiber felt according to the unevenness on the surface
Of the size selected in the range of 1 mm ^{2 to} 100 cm ²
A mesh layer in which non-combustible fibers are woven into a lattice with a mesh is integrally bonded
Laminated wool, glass wool fiber, rock wool
A decorative sheet for a heat insulating sound-absorbing plate made of inorganic fibers, which is attached to a surface layer of an inorganic fibrous felt made of fibers or ceramic fibers .