Method of bonding layers using discrete areas of adhesive
AssigneeThe Dow Chemical Company
InventorGerald Hallworth
Life of this patent
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Abstract
A backing layer and a substrate layer, particularly of fabric-backed tufted carpeting, are bonded together using discrete areas of adhesive applied to one side of the backing layer. The adhesive is applied using a perforated roller (3) with an internal abutment such as a second roller (4). The adhesive material (6) is fed to the inside of the perforated roller (3) and is forced through the perforations with the internal roller (4).
Claims7
A method of bonding a backing material layer to a substrate layerin the manufacture of carpeting wherein discrete areas of adhesive are applied to one side of one of said layers, and said side is pressed into contact with the other of said layers thereby to cause said layers to be bonded together, wherein said discrete areas of adhesive are applied to said one side of said one layer with apparatus comprising a roller having a perforated outer wall, the said one layer being moved in contact with or in close proximity to the roller, fluent adhesive material being provided in the interior of the perforated roller, and the roller being moved relative to an abutment which is in contact with or in close proximity to the inner surface of the roller so that said adhesive material is displace through the perforated wall of the roller and is deposited therefrom onto the said one layer.
Dependencies are inferred from the claim text.