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1. WO1996002382 - FILTER FABRIC FOR DISSIPATING HEAT AND STATIC CHARGE AND METHOD FOR MAKING SAME

Publication Number WO/1996/002382
Publication Date 01.02.1996
International Application No. PCT/US1994/007860
International Filing Date 13.07.1994
Chapter 2 Demand Filed 13.02.1996
IPC
B32B 5/26 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
5Layered products characterised by the non-homogeneity or physical structure of a layer
22characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous
24one layer being a fibrous or filamentary layer
26another layer also being fibrous or filamentary
D04H 13/00 2006.01
DTEXTILES; PAPER
04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING
13Other non-woven fabrics
CPC
B01D 2201/50
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2201Details relating to filtering apparatus
50Means for dissipating electrostatic charges
B32B 15/085
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
15Layered products comprising ; a layer of; metal
04comprising metal as the main or only constituent of a layer, ; which is next to another layer of the same or of a different material
08of synthetic resin
085comprising polyolefins
B32B 15/09
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
15Layered products comprising ; a layer of; metal
04comprising metal as the main or only constituent of a layer, ; which is next to another layer of the same or of a different material
08of synthetic resin
09comprising polyesters
B32B 15/14
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
15Layered products comprising ; a layer of; metal
14next to a fibrous or filamentary layer
B32B 17/02
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
17Layered products essentially comprising sheet glass, or glass, slag, or like fibres
02in the form of fibres or filaments
B32B 2262/0246
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2262Composition of fibres which form a fibrous or filamentary layer or are present as additives
02Synthetic macromolecular fibres
0246Acrylic resin fibres
Applicants
  • BHA GROUP, INC. [US/US]; 8800 West 63rd Street Kansas City, MO 64133, US (AllExceptUS)
  • TAYLOR, Stephen [US/US]; US (UsOnly)
Inventors
  • TAYLOR, Stephen; US
Agents
  • ROLF, Devon, A.; Kokjer, Kircher, Bowman & Johnson Suite 2414 911 Main Street Kansas City, MO 64105, US
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) FILTER FABRIC FOR DISSIPATING HEAT AND STATIC CHARGE AND METHOD FOR MAKING SAME
(FR) TISSU DE FILTRE DESTINE A DISSIPER LA CHALEUR ET LA CHARGE STATIQUE ET SON PROCEDE DE PRODUCTION
Abstract
(EN)
A method of manufacturing a fabric (56) for filtering particulate laden air needles at least one layer of batting (20) (e.g., fibrous material) with a layer of electrically conductive material, such as metallic foil (42), thereby entangling fibers of the batting (20) and shredding the metallic foil (42). In a preferred embodiment, a scrim (24), which is a grid made of cloth, and at least one layer of metallic foil (42) are sandwiched between two layers of batting (20, 50). In a needling process, a bed of barbed needles (55) are repeatedly and rapidly thrust into and pulled out of the layers, thereby entangling fibers of the bats (20, 50), both with each other and the scrim (24), and shredding the layer of metallic foil (42). The resulting fabric (56) has metallic filaments or fibers (62) substantially evenly dispersed therein. The fabric (56) is used for particulate collection on filters (66).
(FR)
Procédé de production d'un tissu (56) destiné à filtrer l'air chargé de particules, consistant à aiguilleter au moins une couche de nappe (20) (par exemple un matériau fibreux) avec une couche d'un matériau électroconducteur, tel qu'une feuille métallique (42), ce qui a pour effet d'entremêler les fibres de la nappe (20) et de déchiqueter la feuille métallique (42). Dans un mode de réalisation préféré, une mousseline (24), laquelle est un canevas de tissu, ainsi qu'au moins une couche de feuille métallique (42) sont prises en sandwich entre deux couches de nappe (20, 50). Dans un procédé d'aiguilletage, un lit d'aiguilles barbelées (55) est poussé dans les couches puis retirées de celles-ci, et ce de manière rapide et répétée, ce qui a pour effet d'entremêler les fibres des nappes (20, 50), à la fois entre elles et avec le canevas (24), et de déchiqueter la couche de feuille métallique (42). Le tissu (56) ainsi obtenu possède des filaments ou fibres (62) métalliques répartis de façon sensiblement régulière. On utilise ce tissu (56) pour recueillir les matières particulaires sur des filtres (66).
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