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:
Aug. 28, 1990
Filed:
Oct. 20, 1989
Detlef Skaletz, Mainz-Bretzenheim, DE;
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Abstract
An apparatus for carrying out membrane separation processes is described. It comprises a housing, at least one spirally wound-up membrane pocket arranged within the housing and containing at least one drainage layer and semipermeable membranes applied to both sides thereof, a spacer between the individual wound plies of the membrane pocket, a centrally arranged collection line, a first end-face opening as an inlet for the material to be separated, a second end-face opening as an outlet for the concentrate and a discharge line for the permeate which has passed into the collection line. The permeate passage from the membrane pocket into the collection line is kept sealed from the space filled with the material to be separated by means of spring-elastic elements, and the semipermeable membranes are mutually joined by energy-bonded seams in the membrane pocket regions adjacent to the side edges. According to the invention no adhesive is required for the apparatus.