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US 4,938,912 AGranted
Method for making perforated components
OwnerHelmut Pelzerinventor
Life of this patent
Estimating the term…
Abstract
A deep drawn, synthetic-foil-sealed textile with foamed backing is perforated by applying hot pressurized air towards the foil, locally and in discrete spots, so that the foil melts locally, and foil material is blown into the textile under formation of a perforation duct that is bonded to the textile material underneath.
Claims2
Method for perforating a deep drawn component made of a three layer configuration which includes a synthetic foil, a textile layer having and carrying said foil on one side, and a foam backing on another, opposite side of the textile layer, comprising the steps of:
- applying towards the foil locally and in discrete spots hot pressurized air so that locally and in said spots the foil melts forming perforations in the foil and ducts form in the textile and into the adjoining foam;
- and
- bonding foil material under formation of these perforations to the textile material underneath by melted foil material and as blown by the hot air into the textile material, around and adjacent each such perforation.
Dependencies are inferred from the claim text.