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1. (MYPI 91000743) NONWOVEN FILTER AND METHOD OF MANUFACTURE.

Office : Malaysia
Application Number: PI 91000743 Application Date: 02.05.1991
Publication Number: PI 91000743 Publication Date: 19.11.1998
Publication Kind : A
IPC:
B01D 39/04
B01D 39/16
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
39
Filtering material for liquid or gaseous fluids
02
Loose filtering material, e.g. loose fibres
04
Organic material, e.g. cellulose, cotton
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
39
Filtering material for liquid or gaseous fluids
14
Other self-supporting filtering material
16
of organic material, e.g. synthetic fibres
Applicants: CHARLES BERNARD HASSENBOEHLER,JR
Inventors: CHARLES BERNARD HASSENBOEHLER, JR
Agents: LEE TATT BOON
Priority Data: 519,132 04.05.1990 US
Title: (EN) NONWOVEN FILTER AND METHOD OF MANUFACTURE.
Abstract:
(EN) A FILTER USEFUL AS A CIGARETTE SMOKE FILTER (10) IS MADE BY CONVERGINGLY PASSING A FLAT RESTRAINED MELTBLOWN WEB (16) SUCCESSIVELY THROUGH A HEATED ZONE (16C) AND A TRUMPET (24) TO FORM A ROVING (25). THE ROVING (25) MAY BE PROCESSED TO MAKE FILTERS. THE PROCESS RESULTS IN STRETCH ORIENTATION OF LONGITUDINAL FIBERS (45A) AND BULKING DUE TO CROSS FIBERS (45B). PRIMARY AND SECONDARY PLEATS (48, 49) FORMED IN THE WEB ARE BUNDLED INTO A CYLINDRICAL ROVING (25). THE PLEATS (48, 49) ADD BULKING TO THE WEB (16) AND PROVIDE FLUID PERMEABILITY THROUGH THE FILTER (10). (FIG. 10)
Also published as:
EP0530251JPH05506809CA2082058KR1019930700723AU1991078598WO/1991/017297