Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1994-12-20
1995-09-26
Bell, James J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
2505161, 428213, 428215, 428220, 428244, 428249, 428283, 428284, B32B 2714
Patent
active
054533147
ABSTRACT:
Wearing apparel for protecting the wearer against radioactive contamination is manufactured from single use disposable laminated material which comprises a first continuous layer of non-macerating hypoallergenic cellulosic material for contact with the wearer's skin and a second continuous layer of cellulosic material exposed to external contamination. The first and second layers are bonded together with a third contiguous layer interposed between them. The third layer is of a microporous adsorbent material allowing passage of body vapors from the wearer to the ambient region while restricting passage of liquid in the opposite direction. The laminated material exhibits a tensile yield strength of at least approximately 2,000 psi, a shear yield strength of at least approximately 1,000 psi, and an overall coefficient of heat transfer of at least approximately 2.75 BTU/hr.ft.sup.2 -.degree.F. The microporous adsorbent material may be activated charcoal or hydrated alumina silicate. The first layer has an outer surface smoothness comparable to that of stationery to provide a tactile quality comfortable to the wearer. Preferably, the first and second layers together are between approximately 0.002 and 0.004 inches thick with a coefficient of heat transfer between approximately 0.075 and 0.150 BTU/hr-ft-.degree.F. The third layer is between approximately 0.0001 and 0.001 inches thick with a coefficient of heat transfer between approximately 0.150 and 0.300 BTU/hr-ft-.degree.F.
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Collier George W.
Collier Kevin G.
Varney Walter L.
Bell James J.
Hilburger Albert W.
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