JPH0314347Y2 - - Google Patents

Description

[Detailed explanation of the idea]

(Field of the invention) This invention relates to a flame-retardant laminate sheet formed by laminating a skin material made of fabric, a base material, and a back material used as necessary. (Background of the invention) Two- or three-layer laminate sheets, which are made by laminating a skin material made of fabric, a base material made of polyurethane foam, and a back material made of various materials used as necessary, are used for clothing, automobile interiors, etc. Traditionally, it has been widely used as a surface material for materials such as wood. In particular, severe flame retardance is required for the surface materials of automobile interior materials such as seats, so for this purpose, flame retardant textile products are used as the back material of the laminate sheet. Efforts were made to improve flame retardancy. However, even with laminate sheets having this structure, there were some that could not meet the required flame retardancy. This is particularly the case where a melt-drop type flame-retardant fabric is used as the skin material. In this way, when fabrics with limited specifications are used as surface materials, they are unable to meet the required flame retardancy, and are used as surface materials for automobile interior materials, which require compatibility with diverse tastes and fashionability. It wasn't a good thing to do. (Purpose of the invention) This invention was made in view of the above points,
The purpose is to provide a laminate sheet having a structure that exhibits excellent flame retardancy regardless of the type and specifications of the fabric constituting the skin material. (Structure of the invention) The laminate sheet according to this invention is made by laminating a skin material made of fabric, a base material, and a backing material used as necessary, and has the severe flame retardant properties required for surface materials for automobile interior materials. The gist is that the base material has a three-layer structure in which flame-retardant polyurethane foam is laminated on both sides of an intermediate material made of a flame-retardant textile product. The present invention will be explained below based on examples. 1 and 2 show embodiments of the present invention.
The laminate sheet 10 of the first embodiment is made by laminating a skin material 11 made of fabric and a base material 12, and the base material 12 is coated on both sides of an intermediate material 12a made of a flame-retardant textile product. It has a three-layer structure in which flammable polyurethane foams 12b and 12c are laminated. A laminate sheet 20 according to the second embodiment is obtained by laminating a skin material 11 and a base material 12 having the same structure as in the first embodiment, and further laminating a back material 13 on the base material 12. Next, these members will be explained. The fabric constituting the skin material 11 is made of various materials and structures, such as nylon fibers, polyester fibers, or blended fibers of nylon and polyester, and the structures include knit, double lace, tricot fabric, or Mockett et al. Examples of the flame-retardant fiber products constituting the intermediate material 12a include natural fiber products such as "Rekotsuto" manufactured by Toho Rayon Co., Ltd., "Canelion" manufactured by Kanebuchi Boseki Co., Ltd., and Nitto Boseki Co., Ltd. Polyvisny rayon knitted material such as "Hi-Selon" manufactured by ), or cotton jersey knitted material is used. Incidentally, these knitted products may be subjected to flame retardant treatment if necessary. In addition, as flame-retardant synthetic fibers, tricot, stockinette, and gold cloth (plain weave) such as "Corderan" manufactured by Kojin Co., Ltd. and "Heim" manufactured by Toyobo Co., Ltd. are used. Further, as flame-retardant treated tricots, nylon or polyester tricots treated by dipping with an organic phosphorus compound flame retardant are used. The physical properties of the flame-retardant polyurethane foams 12b and 12c are optimal depending on the use of the laminate sheet, but the thickness is 1 mm to 20 mm, and the density is 0.018 to 20 mm.
Flame-retardant flexible polyurethane foam with a rating of 0.031 g/cm ³ is common. The flame-retardant polyurethane foam used is prepared by adding known flame retardants such as tris(chloroethyl) phosphate, phosphorus-containing compounds, and chlorine-containing compounds (described in JP-A-56-36512, etc.) to the raw materials for the polyurethane foam. By foam molding using a conventional method, or by the applicant of the present application,
It is easily manufactured by the manufacturing method disclosed in No.-251145. The back material 13 is used to protect the base material 12 and to improve the slippage when the laminate sheet is attached to a cushion body, etc., and is made of nylon tricot or a nonwoven fabric made of nylon or polyester. Note that these members are laminated using an adhesive or heat fusion. Next, the flame retardancy of the invented product will be described. Table 1 shows MVSS, a flame retardant test for automobile interior materials.
-302 (US Automobile Safety Standards) test results.
Note that the numbers in the table correspond to the numbers in FIG. The flame-retardant polyurethane foams 12b and 12c in Table 1 are the JP-A-58-
Manufactured using the manufacturing method disclosed in Publication No. 19321,
The formulation used is polyol: Boranol 3140
(OH value 45, trifunctional, manufactured by Dow Chemical) 80 parts by weight,
SBU polyol 0341 (OH value 30, 6 functional, manufactured by Sumitomo Bayer Urethane) 20 parts by weight, flame retardant: EPD-
201 (manufactured by Nagase Sangyo) 10 parts by weight, Fireroux 77
(manufactured by Stouffer) 16 parts by weight, water: 4.2 parts by weight, foaming agent: 5 parts by weight of Freon, silicone surfactant:
F-650 (manufactured by Shin-Etsu Silicon) 1.3 parts by weight, catalyst: 0.8 parts by weight of dimethylethanolamine, 0.1 parts by weight of tin octylate, trace amount of NIAX A-1, TDI-80 (toluene-2,4-diisocyanate/toluene-2, 6-diisocyanate (abbreviation for 80/20) consists of 55 parts by weight.

【table】

[Table] (Effects) As mentioned above, the product of this invention has a three-layer structure in which flame-retardant polyurethane foam is laminated on both sides of an intermediate material made of a flame-retardant textile product, a skin material and necessary materials. As shown in Table 1, the flame retardant effect is achieved even when using a cover material that did not pass the flame retardant test (MVSS-302) in the past. It has excellent flame retardant properties, passing the test. Therefore, the product of the present invention can be used even if a wide variety of skin materials are available for automobile interior materials, which require severe flame retardancy, as well as adaptability to various tastes and durability. It is beneficial.

[Brief explanation of the drawing]

1 and 2 are perspective views of each embodiment of the present invention, 11 is a skin material, 12 is a base material, 12a is an intermediate material, 12b and 12c are polyurethane foam,
13 is a backing material.

Claims (1)

[Scope of utility model registration request] In a laminate sheet formed by laminating in this order a skin material made of fabric, a base material, and a back material used as necessary, the base material is a flame-retardant intermediate material made of a textile product, and both sides of the intermediate material are flame-retardant. A flame-retardant laminate sheet characterized by a three-layer structure consisting of laminated polyurethane foam.