Plastic and nonmetallic article shaping or treating: processes – Vacuum treatment of work
Patent
1977-03-31
1979-10-09
Sewell, Paul T.
Plastic and nonmetallic article shaping or treating: processes
Vacuum treatment of work
47 58, 47 66, 47 72, 264554, 264132, 264292, B29C 1702
Patent
active
041706188
ABSTRACT:
A decorative container useful for holding a flower pot or the like, and formed by the method of arranging a sheet of thermoplastic polymer upon a form, the form having a shape generally desired for the sheet after it has been molded into the configuration of the form, with said sheet and form being positioned within a heater, with the temperature within the heater being warmed to an elevated degree, and then maintaining the form held sheet within this heated environment for that time necessary for the sheet to soften and fold under the influence of heat into its decorative container configuration, and thereafter removing the heat formed sheet from the heater and cooling it to an ambient temperature.
REFERENCES:
patent: D161026 (1950-11-01), Hollander
patent: D237333 (1975-10-01), Knowles
patent: D239192 (1976-03-01), Wiles
patent: 995510 (1911-06-01), Witt
patent: 2355559 (1944-08-01), Renner
patent: 3080680 (1963-03-01), Reynolds et al.
patent: 3084389 (1963-04-01), Doyle
McTier, Robert F., 1962 "Distortion Printing and Vacuum Forming of Thermoplastic Sheet" SPE Journal, Jul. 1962, pp. 741-745.
Denk Paul M.
Feyrer James R.
Sewell Paul T.
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