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:
May. 11, 2021
Filed:
Jul. 17, 2018
Ahlstrom-munksjö Oyj, Helsinki, FI;
Stephen M. Piescik, Somers, CT (US);
Vamsi Krishna Jasti, Vernon, CT (US);
Ahlstrom-Munksjö Oyj, Helsinki, FI;
Abstract
Breathable barrier fabrics for protective garments that form liquid impervious seams when overlapped and sealed together via heat-sealing, and the seams formed thereby. The breathable barrier fabric is a heat-sealable, liquid impervious fabric composed of a breathable, liquid impervious thermoplastic film layer having a first melting point and a nonwoven layer bonded to a first surface of the thermoplastic film layer. The nonwoven layer has a second melting point that is higher than the first melting point of the thermoplastic film layer. A second nonwoven layer having the second melting temperature may be bonded to a second surface of the thermoplastic film layer opposite the first surface such that the inner film layer has a lower melting point than the outer nonwoven layers. The heat-sealable, liquid impervious fabric has a moisture vapor transmission rate of at least 800 g/m/day as determined by ASTM E96-00.