The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 22, 1982
Filed:
Apr. 30, 1980
Ivan Lorant, Budapest, HU;
Imre Csernyanszky, Budapest, HU;
Gyula Murlasits, Budapest, HU;
Rezso Rusznyak, Gyor, HU;
Paula Szabo nee Paulyuk, Gyor, HU;
Bor-, Mubor-es Cipoipari Kutato Intezet, Budapest, HU;
Graboplast Gyori Pamutszovo-es Muborgyar, Gyor, HU;
Abstract
The specification describes water vapor-permeability sheet materials, particularly useful in the footwear industry. The production of sheet materials which are water permeable, highly resistant to wear, water resistant and mechanically stressable occurs by mechanically foaming a polymeric dispersion, the mechanical foaming being carried out in the presence of a surfactant, the density of the film being adjusted by the mechanical foaming to 0.55-0.85 g/cm.sup.3, gelling the foamed dispersion at a temperature of 120.degree. to 220.degree. C., for at most 10 minutes, and finishing the sheet material by spraying and/or rastering.