JPH0719786Y2 - Non-combustible sheet material - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a non-combustible sheet material, and more specifically, it can be suitably used as a material for a duct pipe material, kitchen equipment, roof material, wall material, etc. Regarding non-combustible sheet material.

<Problems to be solved by conventional technology and device> Conventionally, as a building material such as duct piping material, roof material, wall material, etc., one side of a paper material which has been subjected to flame-retardant processing and coated with a water-soluble adhesive on one side. In addition, a sheet material formed by laminating aluminum foil is known.

The sheet material is for evaporating the water component of the adhesive from the other surface of the paper material to obtain a strong bond between the aluminum foil and the paper material. For example, when it is used as a winding material around an air conditioning duct. In addition, the inside of the duct can be shut off from the outside air, and the escape of hot air or cold air inside the duct can be effectively prevented, which is preferable.

However, the above-mentioned conventional sheet material is one more insufficient in terms of noncombustibility because it uses a paper material as a constituent material because it has been subjected to a flame retardant treatment. In particular, the flame-retardant treatment applied to the paper material deteriorates due to a change with time, and the heat resistance performance is deteriorated.

In addition, there was also a non-combustible material that consisted of a single layer of aluminum foil or two layers of adhesive lamination without the use of paper materials, but in the former case, if a crack occurs in one place, the part breaks. In the latter case, the aluminum foil layers on both sides impede the permeation and evaporation of the volatile components of the adhesive, making it easy for the aluminum foils to peel off from each other, and breaking from the cracked portion as in the case of the above single layer. There was a bad effect such as easy to do.

The present invention has been devised in view of the adverse effects of the above-mentioned conventional sheet materials, and an object thereof is to provide a non-combustible sheet material that has heat resistance for a long period of time and is strong against breakage.

<Means for Solving the Problems> The structure of the non-combustible sheet material of the present invention for solving the above problems is such that glass fiber yarn is used between the front surface layer and the back surface layer made of metal foil such as aluminum foil and each grid has a triangular shape. A non-combustible reinforcing mesh arranged in a grid pattern is provided with a mesh space sufficient for joining the front and back layers to each other, and the front and back layers and the back layer are sandwiched by an adhesive joining layer. It lies in that the layers are formed integrally with each other and the noncombustible reinforcing net.

<Operation> According to the sheet material of the present invention, which has the above-mentioned structure and in which the front and back layers and the front and back layers and the non-combustible reinforcing net are integrally joined, and the overall integrity is enhanced, metal such as aluminum foil is used. The non-combustible reinforcing net made of glass fiber thread intervening between the front and back layers becomes a sheet material that has long-term non-combustibility in the front and back layers made of foil, and each mesh made of glass fiber has a triangular shape. Since it is arranged in a lattice shape, it is difficult to break and it is possible to increase the maintenance of noncombustibility, and it is possible to prevent cracks generated in the metal foil layer such as aluminum foil from spreading to the entire sheet material. .

<Embodiment> An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a partially cutaway plan view of the sheet material of the present invention, and FIG. 2 is a partially enlarged sectional view of FIG.

As is apparent from FIGS. 1 and 2, the sheet material (1) has a front and back surface layers (2) and (3) described later.
A surface layer made of aluminum foil with a non-combustible reinforcing net (4) interposing a glass fiber thread in a grid shape in which each grid has a triangular shape with sufficient mesh voids for joining each other ( 2)
And the back surface layer (3) is laminated.

Then, between the surface layer (2) and the back surface layer (3), and between the surface layer (2) and the back surface layer (3) and the non-combustible reinforcing net (4), a volatile component such as a solvent is evaporated and dried to be polyurethane. An adhesive bonding layer (5) made of a resin adhesive is interposed between the front and back layers (2) and (3) and the front and back layers (2).
(3) and the noncombustible reinforcing net (4) are integrally joined.

To describe the method for producing the sheet material (1), first, a predetermined amount of a polyurethane resin-based adhesive dissolved in a solvent is appropriately added to the surface layer (2) and the back surface layer (3) of the sheet material (1).
It is applied to one side of each aluminum foil layer to be a roll or the like.

Next, a glass fiber thread serving as a noncombustible reinforcing net (4) is arranged on one side of the aluminum foil coated with the above adhesive on the side where the adhesive is applied so that the mesh has a triangular lattice shape.

Then, both aluminum foils are naturally dried by sunlight irradiation or artificially dried by a dryer to evaporate the solvent component and the like of the adhesive.

When the solvent components of the adhesive have almost completely evaporated, the adhesive-coated surfaces of both aluminum foils are bonded to each other, and the bonded products are laminated in layers between the rolls.

In this case, a grid of triangular grids of glass fiber yarn is transferred to the aluminum foil surface, and this grid has the effect of increasing the strength of the aluminum foil and reducing the light reflection to the outside by the foil.

FIG. 3 shows a case where the sheet material (1) according to the present invention is wound around a duct (6) made of plate-shaped glass wool or the like, and the inside of the duct (6) is almost completely outside. Thus, the escape of hot air or cold air in the duct (6) can be almost completely prevented, and it can be suitably used for a long period of time.

In the above example, the non-combustible reinforcing net is used as the non-combustible reinforcing material in which the grids are arranged in a lattice shape in which each grid has a triangular shape.However, regarding the formation of these grid shapes, the glass fiber threads are formed into a net shape. It is formed by knitting or weaving.

Also, the adhesive bonding layer may be formed by a natural or synthetic resin adhesive such as an acrylic resin adhesive, a polyester adhesive, a vinyl acetate adhesive, etc., instead of the polyurethane resin adhesive. Various other design changes can be made without changing the gist of the invention.

<Effects of the Invention> The non-combustible sheet material according to the present invention having the above-described structure is a non-combustible reinforcing net in which glass cells are arranged so that each mesh has a triangular shape, and is sufficient for joining the front and back layers. A space having a mesh gap is interposed between the front and back layers made of metal foil such as aluminum foil, and the front and back layers and each of these layers and the above non-combustible reinforcing net are integrally laminated with an adhesive bonding layer. , Though it is thin and not bulky as a whole, it can be made into a non-combustible structure sheet that is not easily broken and has enhanced integrity due to the triangular mesh of the non-combustible reinforcing net, so it can be used as a non-combustible wall sheet for a long time Robust and suitable for use.

A metal such as aluminum foil that can increase the nonflammability and can form the front and back layers with a nonflammable reinforcing net made of glass fiber yarn interposed between the front and back layers made of metal foil such as aluminum foil. Even if cracks occur in the foil, it is possible to effectively prevent the cracks from spreading to the entire sheet material by the non-combustible reinforcing net integrated with the front and back layers. Since each grid is arranged in a triangular shape to prevent breakage, it is possible to prevent breakage of the sheet material, and it is robust for a long time as a duct pipe material, roof material, building material such as wall material. It has various practical effects that have not been found in the past, such as being suitable for use.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention. FIG. 1 is a partially cutaway plan view of a sheet material, FIG. 2 is a partially enlarged sectional view of a front view,
FIG. 3 is a perspective view showing an example of a usage state. (1) ... Sheet material, (2) ... Surface layer, (3) ... Back surface layer,
(4) ... Non-combustible reinforcing net, (5) ... Adhesive bonding layer

Claims (1)

[Scope of utility model registration request] 1. A non-combustible reinforcing net, in which glass fiber yarns are arranged in a lattice pattern in which each grid has a triangular shape, is joined between the front and back layers by a surface layer and a back layer made of metal foil such as aluminum foil. Characterized in that the front and back layers, the back and back layers, and each of these layers and the non-combustible reinforcing net are integrally laminated by interposing an adhesive bonding layer. Non-combustible sheet material.