Carrier material comprising a first part of a form-fit connection
AssigneeFreudenberg Performance Materials B.V.
InventorJohannes De Jonge
Life of this patent
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Abstract
A carrier material includes at least a first thermoplastic fiber layer and a second thermoplastic fiber layer. At least a part of the first thermoplastic fiber layer and/or the second thermoplastic fiber layer at at least one boundary of the carrier material is removed, to provide a first part of a form-fit connection. The carrier material can be used in bituminous roofing membranes, roofing underlayment sheets, carriers for filter media, primary backings for tufted carpets and (cushion) vinyl floor coverings.
Claims18
A carrier material comprising at least
- a first thermoplastic fiber layer and
- a second thermoplastic fiber layer,
- wherein the carrier material is capable of impregnation by an impregnating material,
- wherein the first thermoplastic fiber layer and the second thermoplastic fiber layer are nonwoven thermoplastic fiber layers,
- wherein fibers in the at least first and/or second thermoplastic fiber layer of the carrier material are filaments, and
- wherein at least a part of the first thermoplastic fiber layer and/or the second thermoplastic fiber layer, at at least one boundary of the carrier material, is removed from the carrier material such that a density of a remaining part of the first thermoplastic fiber layer and/or the second thermoplastic fiber layer is maintained, to provide a first part of a form-fit connection.
A method of manufacturing a carrier material comprising the following steps:
- a. supplying a carrier material comprising at least a first thermoplastic fiber layer and a second thermoplastic fiber layer, wherein the first thermoplastic fiber layer and the second thermoplastic fiber layer are nonwoven thermoplastic fiber layers, wherein fibers in the at least first and/or second thermoplastic fiber layer of the carrier material are filaments, and wherein the carrier material is capable of impregnation by an impregnating material,
- b. removing from the carrier material at least a part of the first thermoplastic fiber layer and/or second thermoplastic fiber layer at at least one boundary of the carrier material such that a density of a remaining part of the first thermoplastic fiber layer and/or the second thermoplastic fiber layer is maintained, to provide a first part of a form-fit connection, and
- c. optionally rolling up the carrier material.
Dependencies are inferred from the claim text.