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US 6,177,366 B1Granted
Two-layer coating system for airbag fabrics
AssigneeMilliken & Company
InventorShulong Li
Life of this patent
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AssigneeMilliken & Company
InventorShulong Li
Estimating the term…
This invention relates to novel airbag coating compositions comprising at least two separate and distinct layers. The first layer (base coat), being in contact with the airbag surface. comprises a composition of at least one coating material which may comprise up to 30% by parts of the total amount of material in the first layer of a silicone resin which provides excellent adhesion, excellent tensile strength, and overall lower cost than standard silicone airbag coating materials. The second layer, being a coating for the first layer, provides excellent reinforcement and aging characteristics to prevent degradation of the first layer. Such a second layer (topcoat) is preferably a silicone material. This two-layer system permits excellent strength and aging properties to prevent seam combing at relatively low cost due to the inexpensive basecoat materials and the relatively low amount required for the topcoat. An airbag fabric coated with this inventive two-layer system is also contemplated within this invention.
An airbag fabric comprising a coating applied to at least a portion of the surface of said airbag fabric, wherein said coating comprises at least two layers wherein the first layer is in contact with at least a portion of the airbag fabric and is a coating composition comprising a silicone resin in an amount of no more than about 30% by total parts of said first layer coating composition and a non-silicone component and the second layer is a coating for at least a portion of said first layer and is at least one material providing sufficient aging stability for the first later selected from the group consisting of at least one non-silicone compound and at least one silicone compound.
Dependencies are inferred from the claim text.