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1. (AU1996074937) Biofilter cover

Office : Australia
Application Number: 74937/96 Application Date: 25.10.1996
Publication Number: 1996074937 Publication Date: 10.07.1997
Publication Kind : A
Prior PCT appl.: Application Number:EP1996004670 ; Publication Number: Click to see the data
IPC:
B01D 53/85
B32B 5/18
B32B 27/12
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
53
Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34
Chemical or biological purification of waste gases
74
General processes for purification of waste gases; Apparatus or devices specially adapted therefor
84
Biological processes
85
with gas-solid contact
B PERFORMING OPERATIONS; TRANSPORTING
32
LAYERED PRODUCTS
B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
5
Layered products characterised by the non-homogeneity or physical structure of a layer
18
characterised by features of a layer containing foamed or specifically porous material
B PERFORMING OPERATIONS; TRANSPORTING
32
LAYERED PRODUCTS
B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27
Layered products essentially comprising synthetic resin
12
next to a fibrous or filamentary layer
CPC:
B32B 27/12
B01D 53/85
B32B 5/18
B32B 27/306
B32B 27/32
B32B 27/36
B32B 2307/724
B32B 2323/10
B32B 2329/04
B32B 2367/00
Y02A 50/2359
Applicants: W.L. Gore & Associates GmbH
Inventors: Bauer, Ambrosius
Leckenwalter, Richard
Priority Data: 19540141 27.10.1995 DE
Title: (EN) Biofilter cover
Abstract:
(EN) The invention concerns an open biofilter (1) with a cover (4) made of a laminate comprising at least one microporous functional layer and a carrier layer to which the functional layer is secured. The functional layer can be an expanded polytetrafluoroethylene membrane and the carrier layer can be applied to both sides of the functional layer. The functional layer or the laminate is permeable to gas or air and impermeable to water, such that all the outgoing air from the biofilter can pass through the laminate whilst the moisture is retained in the biofilter.
Also published as:
WO/1997/015378