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US 7,501,362 B2Granted
Nonwoven composite element
AssigneeQuadrant Plastic Composites AG
InventorWalter Maier
Life of this patent
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Abstract
The invention relates to nonwoven composite elements in which a blended fiber nonwoven comprised of thermoplastic fibers and of reinforcing fibers having a high-melting point is joined on one or both sides to one or two composite films of the structure ba or bab, in which a is a thermoplastic material having a high-melting point and b is a thermoplastic material having a low-melting point, and layer b of the composite film(s) faces the blended fiber nonwoven.
Claims9
A nonwoven composite element, containing
- A. a blended fiber nonwoven comprising thermoplastic fibers and higher melting reinforcing fibers, which is adherently joined at one or both sides thereof to
- B. one or two composite foils of a thermoplastic material, characterized in that the foil(s) B is a composite foil with the structure ba or bab, wherein a is a higher melting thermoplastic material, selected from a polyamide, a polyester and a polyurethane, and wherein b is a lower melting thermoplastic material, selected from polyethylene or polypropylene, and wherein layer b of the composite foil(s) faces the blended fiber nonwoven, and wherein the thickness of the composite foil(s) is between 50 and 200 μm.
Dependencies are inferred from the claim text.