Perforated laminate

Details Perforated laminate Perforated laminate

2008-06-24

2008-06-24

Watkins, III, William P (Department: 1794)

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

Reexamination Certificate

active

07390553

ABSTRACT:
The present invention relates to a perforated thermoplastic structure comprising at least a first layer (8) and a plurality of perforations, which extend through the first layer (8). The perforations have a three-dimensional, preferably approximately conical or cylindrical shape (18). A second layer forms an inner surface (20) of the shape (18), whereas the first layer forms an outer surface (21) of the shape (18). The first layer contains a thermoplastic material, whose melting point is lower than a melting point of the thermoplastic material of the second layer.

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