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US 2022/0031074 A1Published application
Two color process
OwnerBrian Mooninventor
Life of this patent
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Abstract
The invention is a method of manufacturing a multi-color molded furniture item made by a multi-step molding process using heat zone control in the mold to apply different plastic charges to predefined portions of the mold. Controlling zones of the mold with heat by zone heating and thermal insulators separating mold zones for molding a part of different plastics differing in characteristics such as color, durability, surface finish and chemical resistance.
Claims2
A method of forming a two color molded part comprising:
- Providing a mold having a first mold portion, a second mold portion, the first part comprising a first mating surface, the second mold portion comprising a second mating surface, the first mold portion comprising a heating element thereon, the second mold portion comprising a second heating element;
- Providing a control adapted to control the heating element in the first mold portion;
- attaching the first mold portion to the second mold portion to define a mold interior;
- heating the first mold portion to a predetermined temperature;
- placing a first plastic material in the mold interior;
- rotating the mold for a predetermined time;
- heating the second mold portion;
- placing a second plastic material in the mold interior;
- rotating the mold for a predetermined time;
- open the mold by seperating the first mold portion from the second mold portion;
- Removing the part.
8 more elements
Dependencies are inferred from the claim text.