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:
Feb. 16, 2016
Filed:
May. 28, 2013
Device and method for determining the permeation rate of barrier elements and ultra-barrier elements
Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v., Munich, DE;
Abstract
The invention relates to a method and a device for determining the permeation rate of barrier elements and ultra-barrier elements according to an isostatic permeation measurement method. In the process, the convective mass transfer of a permeate permeated through a barrier element is replaced by a diffusion-controlled mass transfer along a diffusion path in a subsequently arranged measurement chamber with a hollow conducting element and permeate sink. The permeate sink ensures that permeate is removed continuously, and so a mass flux equilibrium of the permeate is set through the barrier element and through the diffusion path. The concentration gradient of the permeate and, from this, the permeation rate of the barrier element is then determined by non-invasive determination of the concentration of the permeate along the diffusion path.