Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Layered – stratified traversely of length – or multiphase...
Patent
1990-12-21
1992-03-10
Thurlow, Jeffery
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Layered, stratified traversely of length, or multiphase...
264 407, 264173, 366340, 4251311, 4251335, 425462, B29C 47 06
Patent
active
050947885
ABSTRACT:
Method and apparatus are disclosed for making multilayer film having a prescribed gradient in, or distribution of, the thicknesses of one or more materials through the thickness of the film.
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Ayres Ralph F.
Gosen Daniel J.
Schrenk Walter J.
Shastri Ranganath K.
The Dow Chemical Company
Thurlow Jeffery
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