JPH065887Y2 - Sheet-shaped base material for flame-retardant interior - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an interior or building of a vehicle, furniture, etc.
TECHNICAL FIELD The present invention relates to a flame-retardant sheet-like base material useful as an interior material in a building.

[Conventional technology]

Conventionally, as a sheet for interior or interior for fire prevention and disaster prevention, various films and sheets made of a flame-retardant polymer composition represented by polyvinyl chloride (hereinafter abbreviated as PVC) are various cloths (woven fabrics), non-woven fabrics. It is known that a laminate laminated with a base cloth such as paper or a surface of these base cloths coated with or impregnated with the PVC is used.

These flame-retardant sheet-like base materials have P formed on the surface thereof.
The PVC film layer, the sheet layer or the coating layer has a drawback that the plasticizer or the like is leached out with time and the surface is easily contaminated. To prevent this contamination and to impart a reinforcing effect, the PVC is used.
It is also known that a polyethylene film or a polyester film is attached to the surface of a film or a coating film.

However, these conventional flame-retardant sheet-like base materials generally have flame retardancy but poor heat resistance, and most of them melt or soften at a temperature of about 200 to 300 ° C. or higher, so that, for example, an ignited cigarette is difficult. When it falls on a flammable sheet-like substrate, it easily melts to form holes, and the filling material inside the wall material or flooring to which this flame-retardant sheet-like substrate is applied, such as a plate,
It is difficult to avoid the risk of catching fire (burning) to flammable materials such as cotton, felt, and foam, which could lead to a fire.
When a toxic gas is generated by combustion like a VC, there is a risk of human life.

[Problems to be solved by the device]

The purpose of the present invention is to prevent the fire from spreading to the combustible filling material inside by melting the cigarette flame or the like to generate holes like the above-mentioned conventional flame-retardant sheet-like base material, It is an object of the present invention to provide a flame-retardant sheet-like base material having a disaster prevention / fireproof property that suppresses the generation and further having excellent strength characteristics.

[Means for Solving the Problems]

The flame-retardant interior sheet-like substrate (hereinafter referred to as a sheet substrate) of the present invention comprises a heat-resistant film A made of an infusible organic polymer and a flame-retardant sheet-like material B (hereinafter referred to as a flame-retardant material). ), And the base cloth C is laminated on and integrated with the flame-retardant material B.

FIG. 1 is a schematic sectional view showing one embodiment of such a sheet base material of the present invention. As shown in the figure, the sheet substrate 1 of the present invention
Does not use the heat-resistant film A2 as it is, but is one in which the flame-retardant material B3 and the sheet base fabric C4 are laminated and integrated in the order of A / B / C.

In the present invention, the heat resistant film A2 needs to be formed of a nonflammable organic polymer, and is formed of an organic polymer having a property of carbonizing at a high temperature, preferably at a temperature of at least 500 ° C. Is desirable. Examples of such an organic polymer include aromatic polyamide (aramid), polyimide, polyamideimide, and the like, but an aromatic polyamide film or a polyimide film is preferable.

The thickness of the heat-resistant film A made of these non-flammable organic polymers is preferably 6 μ to 100 μ in view of the flexibility or flexibility of the sheet base material of the present invention. If it is too thin, it is not preferable in terms of heat resistance, heat insulation and strength.

As the flame-retardant material B constituting the sheet base material, a known film, sheet, coating film or flame-retardant paper having various flame-retardant properties is used and is not particularly limited, and the intended use of the product or required characteristics It is selected as appropriate.

Specifically, PVC, polyvinylidene chloride, polyvinyl chloride / polyvinylidene chloride copolymer, flame-retardant resin such as fluorine-based resin typified by polytetrafluoroethylene, resin composition containing a flame retardant, etc. Film, coating film, etc. A flame-retardant film typified by polyvinyl chloride, which is inexpensive and easy to handle, is preferable.

As the base cloth C, various characteristics such as volume feeling, elasticity in the thickness direction, heat insulation / heat retention, soundproofing, flexibility, and shape conformability are used according to the use and product purpose of the sheet base material of the present invention. It is preferable to appropriately select and apply from among those capable of giving. For example, a foam is used as a wall material, a ceiling material, or an automobile interior material that is required to have heat insulation, soundproofing, and drip-proof properties, and a knitted woven fabric is preferably used as an interior material and a floor material for the wall surface. In addition to these knitted fabrics and foams, non-woven fabric, paper and the like can be used. Further, in order to enhance the flame retardant effect, a base fabric using various flame retardant fibers or a base fabric treated with a commercially available flame retardant is preferable.

Further, the sheet substrate of the present invention can have a metal foil, a vapor-deposited metal layer, a printed film layer, etc. interposed between the heat-resistant film A and the flame-retardant material B, which allows the heat-resistant film layer to be colored. Diversity can be added.

Further, a flocked layer is formed on the surface of the heat resistant film, and the flocked layer can improve the texture, touch and appearance for the interior of the present invention. Short fibers for flocking have a fineness of 1 to 20 denier and a fiber length of 1 mm to 10 mm,
Natural fibers such as hemp and wool, synthetic fibers such as polyester fibers, polyamide fibers, acrylic fibers, and polyolefin fibers, rayon, etc., especially flame-retardant fibers such as polyvinylidene chloride-based fibers, polyvinyl acrole-based fibers (vinylon), and heat-resistant fibers. Aramid fiber (Dupont's "Kevlar") and so on.

The adhesive applied to the production of the sheet base fabric of the present invention is appropriately selected and used according to the type and combination of the flexible base material and the heat-resistant film, and any kind of adhesive is used. However, those having flexibility and excellent heat resistance are preferable.

When the flexibility of the adhesive is insufficient, it is preferable to secure the flexibility of the laminate by reducing the amount used or by applying the adhesive in a dot-like or linear manner.

Examples of such adhesives include reactive or self-crosslinking polyacrylic ester adhesives, thermosetting urethane adhesives, epoxy adhesives, polyimide adhesives and polyamides with excellent heat resistance. Examples thereof include imide adhesives. Further, a flame-retardant adhesive may be used to further enhance disaster prevention. These adhesives, in particular, thermosetting and heat-resistant adhesives such as the above acrylic, urethane, epoxy, polyimide, polyamide-imide, etc.
It is preferably applied not only to the adhesion between the film layer and the base material layer, but also to the adhesion of the flocked layer. In this case, the thickness of the adhesive layer is made as thin as possible in order to maintain the flexibility of the sheet-shaped substrate of the present invention, for example, several μ or less, preferably 1 to
It is preferable to set it to 2 μ or less.

〔Example〕

 Hereinafter, the present invention will be described in more detail with reference to examples.

Example A polyvinyl chloride sheet having a thickness of about 30μ is provided on one side of a polyimide film (heat resistant film A) having a thickness of about 25μ manufactured by DuPont Co., Ltd. (Dainichi Seika Kogyo Co., Ltd.).
Manufactured by Seika Bond "E260 / C26)
A non-woven fabric made of polyester fiber (“Sontara” 40 g / m ² manufactured by DuPont) (base fabric C) is attached to the other surface of the polyvinyl chloride film (flame-retardant material B) to form a composite structure of A / B / C. A sheet base material having

The non-woven fabric base layer C of this sheet base material was attached to a plywood board, and the ash of a lit cigarette was dropped on the heat-resistant film A side of the veneer board to observe the burning state. As a result, the flame-retardant paper below the position where the cigarette fell was shrunk, and wrinkles were formed on the heat-resistant film A, but they did not spread and self-extinguished.

Comparative Example The polyvinyl chloride sheet was similarly bonded and laminated on a commercially available nonwoven fabric made of the above polyester fiber. The nonwoven fabric side of this laminate was attached to a plywood board, and at the same time, the ash of a lit cigarette was dropped onto the surface of the polyvinyl chloride sheet, and the burning state was observed. As a result, there is a hole in the falling part of the ash,
The plywood was scorched through the nonwoven fabric layer, and a pungent odor of halogen was recognized.

[Effect of device]

The sheet-shaped substrate for interior of the present invention is a flame-retardant sheet-shaped substrate having a conventional vinyl chloride film layer or sheet layer, and a flame-retardant sheet-shaped substrate obtained by laminating a polyester film or the like on the vinyl chloride film surface or sheet surface. Unlike materials, it has the function of preventing the spread or burning of fire due to the excellent heat resistance and heat insulation of the heat resistant film,
Moreover, it has the same stain resistance as when the above polyester films are laminated.

The heat-resistant film not only has excellent mechanical strength, but also has excellent strength retention at high temperatures, and therefore has an excellent effect of blocking fire during fire and preventing spread of fire.

Therefore, it is extremely useful as a fireproof and disaster prevention material for interiors represented by floors, ceilings, curtains for partitioning (Darkakaten), wall covering materials, upholstery materials and the like.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an example of a sheet-shaped base material for interior of the present invention. 1 ... Sheet-shaped base material for interior, 2 ... Heat-resistant film A, 3 ... Flame-retardant sheet-shaped material B, 4 ... Base cloth C.

Claims (1)

[Scope of utility model registration request] 1. A heat-resistant film A made of an infusible organic polymer, a flame-retardant sheet material B and a base cloth C are A / B / C.
Sheet-like base material for flame-retardant interior, laminated in this order.