Transparent soda lime cartridge

Claim 1

A NON-CHANNELING, DISPOSABLE, GAS AABSORBENET CARTRIDGE FOR RE-BREATHING APPARATUS COMPRISISNG A CHARGE OF SODA LIME GRANULES SUSROUNDED BY A TRANSPARENT WALL FORMED FROM A BIXIALLLY ORIIENTED POLYMERIC MEMBERANCE POSSESSING THE PROPERTIES WHEN HEATED TO 205*C. OF SHRINKING TO 40% OF ITS UNHEATED DIMENSIONS AND EXHIBITING SHRINK ENERGY OF FROM 100 TO ;:300 P.S.I., SAID SODA LIME BEING MADE DUSTLESS BY THE ADDITION OF FROM 1 PERCENT TO 3 PERCENT OF SSODDIDUM CARBOXYMETHLCELLUBLOSE, PERFORATED SEND-PLATES POSITIONED ON TOP OF AND AT THE BOTTOM OF THE CHARGE, SAID END-PLATES BEING SECURED IN POSITION BY A THICKENED ANNULUS OF THE WALL MATERIAL SURROUNDING THE PERIPHERY OF THE PLATES AND OVERLYING A PORTION OF THEIR EXPOSEDD OUTER SURFACE ADJACENNT THE PERIPHERY, SAID MEMBRANE THROUGHOUT ITS WALL AREA BEING IN TIGHT CONTACT WITH THE BOUNDARY GRANULES OF THE SOSDA LIME CHARGE AND CONFORMING TO THE EXTERMAL CONFIGURATION OF EACH BOUNDARY GRANULE, THE SSURFACE ENCLOSURE OF THE BOUNDARY GRANULES THEREBY PREVENTING GAS CHANNELLING BETWEEN THE ABSORBENT CHARGE AND THE WALL.