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1. (WO1998052672) PLEATABLE NONWOVEN COMPOSITE ARTICLE FOR GAS FILTER MEDIA
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/052672 International Application No.: PCT/US1998/009966
Publication Date: 26.11.1998 International Filing Date: 15.05.1998
Chapter 2 Demand Filed: 09.11.1998
IPC:
B32B 3/28 (2006.01) ,B32B 5/26 (2006.01)
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
3
Layered products essentially comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products essentially having particular features of form
26
characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids
28
characterised by a layer comprising a deformed thin sheet, e.g. corrugated, crumpled
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
22
characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous
24
one layer being a fibrous or filamentary layer
26
another layer also being fibrous or filamentary
Applicants:
REEMAY, INC. [US/US]; 70 Old Hickory Boulevard Old Rickory, TN 07138, US (AllExceptUS)
MURPHY, William, F., Jr. [US/US]; US (UsOnly)
Inventors:
MURPHY, William, F., Jr.; US
Agent:
LINKER, Raymond, O., Jr. ; Bell Seltzer Intellectual Property Law Group Alston & Bird LLP P.O. Drawer 34009 Charlotte, NC 28234, US
Priority Data:
08/862,72123.05.1997US
Title (EN) PLEATABLE NONWOVEN COMPOSITE ARTICLE FOR GAS FILTER MEDIA
(FR) PRODUIT COMPOSITE STRATIFIE NON TISSE, POUVANT ETRE PLISSE ET DESTINE A DES FILTRES A GAZ
Abstract:
(EN) A composite nonwoven fabric (10) suitable for undergoing pleating to form filtration media includes two nonwoven fabric layers which are adhesively bonded. One layer is an air permeable nonwoven web (12) of continuous filaments. A high loft nonwoven batt (14) of staple fibers is laminated to the nonwoven web layer. The nonwoven batt has a gradient fiber density and includes a first layer (22) of relatively low denier fibers and a second layer (26) of relatively higher denier fibers.
(FR) L'invention se rapporte à un tissu non-tissé composite (10) susceptible d'être plissé aux fins de former des éléments de filtration. Ce tissu contient deux couches de tissu non-tissé collées l'une à l'autre par un adhésif. L'une de ces couches est un voile non tissé perméable à l'air (12) et constitué de filaments continus. Une nappe non tissée très gonflante (14), et constituée de fibres discontinues, est collée à la couche de voile non tissé. Cette nappe non tissée présente une densité de fil décroissante et contient une première couche (22) de fibres de denier relativement faible et une seconde couche (26) de fibres de denier relativement plus élevé.
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Designated States: BR, JP, KR, US
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0983113