ORGANIC VAPOR SORBENT PROTECTIVE DEVICE WITH THIN FILM INDICATOR AND METHOD FOR MAKING THE DEVICE
摘要
<p>A sorbent media protective device includes an enclosure having a gas inlet, gas outlet and a thin-film multilayer indicator. The thin-film multilayer indicator is proximate sorbent media that can sorb a vapor of interest flowing from the gas inlet towards the gas outlet. The indicator includes a porous detection layer whose optical thickness changes in the presence of the vapor, located between a semireflective layer and a reflective layer permeable to the vapor. With equilibration at the applied vapor concentration between at least a portion of the media and the vapor, the vapor can pass through the reflective layer into the detection layer and change the detection layer optical thickness sufficiently to cause a visibly discernible change in the indicator appearance if viewed through the semireflective layer.</p>
申请公布号
EP2076757(B1)
申请公布日期
2015.07.01
申请号
EP20070841088
申请日期
2007.08.20
申请人
3M INNOVATIVE PROPERTIES COMPANY
发明人
RAKOW, NEAL A.;MATHERS, JAMES P.;ZHANG, JUN-YING;PAOLUCCI, DORA M.;POIRIER, RICHARD J.;DAVID, MOSES M.;TREND, JOHN E.;WENDLAND, MICHAEL S.