Methods for production of automobile airbags with decreased air leakage and an increased duration of their inflated state, as well as airbags produced in accordance with these methods are provided.

Provided is a coated fabric for airbags, comprising a coating layer disposed on at least one surface of a woven fabric directly or with one or more other layers interposed therebetween, the coating layer containing a thermally responsive foaming agent.

Provided are an airbag base cloth and an airbag including same, the airbag base cloth being a flexible and lightweight airbag fabric on which films are laminated, having good rubbing resistance after withstanding heat/wet heat, and providing excellent internal pressure retention within the airbag after sewing. The airbag base cloth according to the present invention is characterized in that at least one face of fabric is coated with a multilayer film having an adhesive layer, and the average value of the warp and weft slippage resistance in the base cloth is 350 N/2.5 cm or more.

Disclosed is a method for manufacturing a polyester fabric for an airbag that can not only prevent or minimize the separation of a sizing agent, which is provided to a yarn through a sizing process, during a weaving process, but can also maximize a peel strength between a textile substrate and a coating layer to be subsequently formed thereon and lower the stiffness of an airbag fabric by effectively removing the sizing agent from the textile substrate after the weaving process is completed. The method of the present invention comprises: applying a polyester-based sizing agent to a polyester yarn; manufacturing a textile substrate with the sizing agent-applied polyester yarn; removing the sizing agent from the textile substrate under an alkaline condition of pH 8 to 10; and forming a coating layer on the sizing agent-removed textile substrate in order to enhance air-tightness.

The present invention provides a coating fabric for airbags where an elastomer is coated to at least one side of textile constituted from synthetic fiber filament, which is characterized in that the coating weight of the resin is as small as 10 to 20 g/m.sup.2 and an average resin thickness of the head top in the textile surface is 4.0 μm to 12.0 μm in both directions of warp and weft and that the average value of burning speed measured according to FMVSS 302 is not more than 60 mm/min in both directions of warp and weft and the maximum value thereof is not more than 1.2-fold to the average value in both directions of warp and weft.

The present invention relates to a coated fabric for an air bag obtained by applying an elastomer resin onto at least one side of a woven fabric made from synthetic fiber. The applied amount of the elastomer resin is 25 to 60 g/m.sup.2. The average resin thickness on warp and weft at head top of the woven fabric surface is 8 μm to 45 μm. The number of foams having diameter of 30 μm or larger is 100 or more/cm.sup.2 on the surface of a resin layer.

A method of making a flame resistant airbag suitable for use in aviation applications is discussed. A flame resistant fabric for the use in the construction of aviation airbags is woven from a high tenacity continuous polyester fiber substrate. A polyurethane coating is applied to the woven fabric, which has been treated with a flame retardant, to impart high pressure permeability resistance to the flame resistant fabric. The resulting fabric complies with Federal Aviation Requirement 25.853 as well as exhibits sufficient high pressure permeability resistance which is measured as a pressure of not less than about 198 kPa after five seconds from an initial inflation and pressurization to about 200 kPa, such as may be encountered in and during an inflation of aviation airbag assemblies.

An aqueous coating film-forming composition is provided that can be coated uniformly on a silicone rubber surface without causing repelling or coating failure even when applied to the silicone rubber surface at a film thickness of 30 μm or less, and forms an antifriction dry coating film that reduces friction and/or blocking of the substrate surface on the surface. The composition comprises (A) a solid lubricant, (B) a thickener, and (C) a silicone binder in the form of an oil-in-water silicone emulsion comprising (c1) an ionic emulsifier and (c2) a polyoxyethylene-polyoxypropylene copolymerized nonionic emulsifier. Water content is removed from the composition to form an antifriction dry coating film comprising 40 to 80 mass % of component (A), 0.50 to 10 mass % of component (B), 0.60 to 5 mass % of component (c2), and 5 to 49.5 mass % of component (C) (solid fraction). Applications thereof are also provided, e.g. airbag coatings.

An air bag base cloth according to the present invention includes a base cloth main body formed of synthetic fibers, and a synthetic resin layer with which at least one face of the base cloth main body is coated, and the moisture content measured in accordance with JIS L 1096.8.10 is 0.5% or less.

The present invention addresses the problem of providing: a coated fabric for airbags that is less likely to have yarn slippage after being sewn, and that can also be compactly stored; and an airbag using the coated fabric. As means for achieving this object, a coated fabric for airbags that has a crimp ratio of 12% or more in the warp direction and a crimp ratio of 6% or less in the weft direction is provided.