Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Weight per unit area specified
Patent
1987-11-03
1989-11-14
Lesmes, George F.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Weight per unit area specified
4284111, 428420, 428480, B32B 704, B32B 2706, B32B 2736, B32B 3106
Patent
active
048806951
ABSTRACT:
A two-step, sequential coating method is disclosed which permits the use of aqueous precursor solutions to coat water-insoluble compounds onto thermoplastic film. In a preferred embodiment, an aqueous oleic acid/ammonium oleate solution is coated onto amorphous polyester sheet which is subsequently monoaxially oriented by stretching in the machine direction, and coated with an aqueous solution of calcium hydroxide, thereby forming a layer of calcium oleate in situ. The coated film is subsequently biaxially oriented by stretching in the transverse direction, and heat-set.
REFERENCES:
patent: 4486483 (1984-12-01), Caines
patent: 4554200 (1985-11-01), Caines
patent: 4775593 (1988-10-01), Heberger et al.
Caines R. Scott
Rudd David
Clements Gregory N.
Hoechst Celanese Corporation
Lesmes George F.
Zirker D. R.
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