Fabric (woven – knitted – or nonwoven textile or cloth – etc.) – Nonwoven fabric – Nonwoven fabric with a preformed polymeric film or sheet
Reexamination Certificate
1999-02-17
2002-06-11
Morris, Terrel (Department: 1771)
Fabric (woven, knitted, or nonwoven textile or cloth, etc.)
Nonwoven fabric
Nonwoven fabric with a preformed polymeric film or sheet
C442S398000, C428S198000
Reexamination Certificate
active
06403505
ABSTRACT:
BACKGROUND INFORMATION
1. Field of the Invention
The present invention relates to a composite material including a laminate made of a polymer film bonded to a nonwoven.
2. Description of Related Art
Such a composite material is known. The film is applied in the liquid state to the nonwoven after it is manufactured, producing a continuous mutual bonding between the nonwoven and the polymeric material forming the film. The composite material obtained is in general relatively thick, water- and water vapor-impermeable, and relatively inflexible. It is predominantly used as artificial leather in manufacturing suitcases.
SUMMARY OF THE INVENTION
The object of the present invention is to develop a composite material of the aforementioned type that is relatively more flexible, more water vapor permeable, has a reduced elongation and a relatively increased strength.
This object is achieved according to the present invention by a composite material including a laminate (
1
) of a film (
5
) made of polymeric material bonded to a nonwoven (
7
), where the nonwoven and the film are bonded together at discrete points (
3
) and the laminate is stretched in at least one direction after it has been formed.
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Groitzsch Dieter
Klein Bernhard
Löcher Engelbert
Firma Carl Freudenberg
Kenyon & Kenyon
Morris Terrel
Torres Norca L.
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