Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Layered – stratified traversely of length – or multiphase...
Patent
1990-07-09
1991-12-03
Thurlow, Jeffery
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Layered, stratified traversely of length, or multiphase...
15624411, 156500, 2641761, 26421118, 264280, 425113, B29C 4790
Patent
active
050698516
ABSTRACT:
Continuous lamination of ABS and polymethylmethacrylate (PMMA) is achieved employing a continuous sheet or reel of PMMA 0.1 inch to 0.250 inch thick optionally preheated on one side; a web of ABS is extruded at about 450.degree.-550.degree. F. from pellets onto the PMMA at the nip of a roll stack. In the roll stack, the two laminated layers are compressed and gradually cooled. The laminate displays properties of both ABS and acrylic. It has excellent thermoforming properties.
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Hicks Clark T.
Hoffman Ray D.
Thompson, II James E.
Aristech Chemical Corporation
Krayer William L.
Thurlow Jeffery
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