Heating apparatus for thermoplastic resin sheet and method of manufacturing thermoplastic resin-molded body
AssigneeToray Industries, Inc.
InventorsMitsuki Fuse, Masaru Tateyama, Akihiko Nishizaki, Kazuhisa Kodaira, Kuniko Fujita
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Abstract
A heating apparatus that heats a thermoplastic resin sheet includes a vertically-movable heating wall that is indirectly heated with a saturated steam of a heat medium and heats the thermoplastic resin sheet above a melting point of the thermoplastic resin by bringing the heating wall into contact with the thermoplastic resin sheet.
Claims13
A method of manufacturing a thermoplastic resin-molded body, comprising:
- a step of heating a thermoplastic resin sheet to be fused above a melting point of the thermoplastic resin with the heating apparatus;
- a step of clamping a molding die comprising an upper die and a lower die to pressurize the fused thermoplastic resin sheet;
- and
- a step of cooling the pressurized thermoplastic resin sheet to be solidified to make a thermoplastic resin-molded body,
- wherein the heating apparatus comprises a vertically-movable heating wall indirectly heated with a saturated steam of a heat medium that heats the thermoplastic resin sheet above the melting point of the thermoplastic resin by bringing the heating wall into contact with the thermoplastic resin sheet.
The method according to 2, wherein the thermoplastic resin sheets have different heat capacities in the step of heating, the molding die has a boss shape, and the thermoplastic resin-molded body having the boss shape is made in the step of cooling.
A heating apparatus that heats a thermoplastic resin sheet, comprising an upper jacket comprising a pressure vessel that houses a heat medium and has a vertically-movable heating wall that is indirectly heated with a saturated steam of the heat medium vaporized by a heater provided inside the upper jacket and heats the thermoplastic resin sheet above a melting point of the thermoplastic resin by bringing the heating wall into contact with the thermoplastic resin sheet.
Dependencies are inferred from the claim text.