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1. (WO1997015378) BIOFILTER COVER
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/015378 International Application No.: PCT/EP1996/004670
Publication Date: 01.05.1997 International Filing Date: 25.10.1996
Chapter 2 Demand Filed: 23.05.1997
IPC:
B01D 53/85 (2006.01) ,B32B 27/12 (2006.01) ,B32B 5/18 (2006.01)
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
27
Layered products essentially comprising synthetic resin
12
next to a fibrous or filamentary layer
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
Applicants:
W.L. GORE & ASSOCIATES GMBH [DE/DE]; Hermann-Oberth-Strasse 22 D-85640 Putzbrunn, DE (AllExceptUS)
BAUER, Ambrosius [DE/DE]; DE (UsOnly)
LECKENWALTER, Richard [DE/DE]; DE (UsOnly)
Inventors:
BAUER, Ambrosius; DE
LECKENWALTER, Richard; DE
Agent:
KLUNKER, SCHMITT-NILSON, HIRSCH; Winzererstrasse 106 D-80797 München, DE
Priority Data:
195 40 141.727.10.1995DE
Title (DE) ABDECKUNG FÜR BIOFILTER
(EN) BIOFILTER COVER
(FR) REVETEMENT POUR FILTRE BACTERIEN
Abstract:
(DE) Offener Biofilter (1) mit einer Abdeckung (4), die aus einem Laminat besteht, das zumindest eine mikroporöse Funktionsschicht aufweist und eine Trägerschicht, an der die Funktionsschicht befestigt ist. Die Funktionsschicht kann eine Membran aus expandiertem Polytetrafluorethylen sein und die Trägerschicht kann an beiden Seiten der Funktionsschicht angebracht sein. Die Funktionsschicht bzw. das Laminat ist für Gas bzw. Luft durchlässig und für Wasser undurchlässig, so daß die gesamte Abluft des Biofilters durch das Laminat hindurchtreten kann, während die Feuchtigkeit im Biofilter zurückgehalten wird.
(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.
(FR) L'invention concerne un filtre bactérien ouvert (1) muni d'un revêtement (4) composé d'un stratifié comportant au moins une couche fonctionnelle microporeuse et une couche porteuse sur laquelle la couche fonctionnelle est fixée. La couche fonctionnelle peut être une membrane en polytétrafluoréthylène expansé et la couche porteuse peut être appliquée des deux côtés de la couche fonctionnelle. La couche fonctionnelle ou le stratifié est perméable au gaz ou à l'air et imperméable à l'eau, de manière que l'ensemble de l'air sortant du filtre bactérien puisse passer à travers le stratifié, l'humidité étant retenue dans le filtre bactérien.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, HU, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TR, TT, UA, UG, US, UZ, VN
African Regional Intellectual Property Organization (ARIPO) (KE, LS, MW, SD, SZ, UG)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: German (DE)
Filing Language: German (DE)
Also published as:
AU1996074937