Photographic base with oriented polyolefin and polyester sheets
AssigneeEastman Kodak Company
InventorsRobert P. Bourdelais, Alphonse D. Camp, Peter T. Aylward
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Abstract
A photographic element comprising a laminated base wherein said base comprises a voided polyester sheet having laminated thereto a biaxially oriented polyolefin sheet on the bottom of said polyester sheet and a biaxially oriented polyolefin sheet laminated to the top of said polyester sheet.
Claims19
A photographic element comprising a laminated base wherein said base comprises a voided polyester sheet having laminated thereto a biaxially oriented polyolefin sheet on the bottom of said polyester sheet and a biaxially oriented polyolefin sheet laminated to the top of said polyester sheet wherein said element has a stiffness in any direction of between 150 and 300 millinewtons, said polyester sheet has a glass transition temperature between about 50° C. and 150° C., said top biaxially oriented sheet comprises at least one layer that is voided, and said polyester sheet has a void volume of between 30% and 60%, and wherein said top biaxially oriented polyolefin sheet is substantially free of white pigment.
Dependencies are inferred from the claim text.