OPTIMIZED WAX FOR SEALING THE EDGE OF A FILTER SHEET

A filter sheet having a fluid impermeable wax layer coursing about an enclosed area of the filter sheet which is permeable to the fluid to be filtered, wherein the wax of the fluid impermeable wax layer has a durometer reading of about 75 to about 100 Shore A hardness at 25 ~C and 85 ~C, a melt poin...

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Bibliographic Details
Main Authors SALE, RICHARD D, ROESSLER, NORBERT, SCHIMMEL, MARK W, PRINCE, RICHARD A
Format Patent
LanguageEnglish
French
Published 15.04.1999
Edition6
Subjects
GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
TECHNICAL SUBJECTS COVERED BY FORMER USPC
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
TRANSPORTING
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Summary:A filter sheet having a fluid impermeable wax layer coursing about an enclosed area of the filter sheet which is permeable to the fluid to be filtered, wherein the wax of the fluid impermeable wax layer has a durometer reading of about 75 to about 100 Shore A hardness at 25 ~C and 85 ~C, a melt point of about 110 ~C to about 180 ~C, and a viscosity of less than about 100 cP at 155 ~C and preferably comprises ethylene bis stearamide.
Bibliography:Application Number: CA19982305519