A microwave oven cooking utensil and a method for manufacturing the same
AssigneeMaxell, Ltd.
InventorsTsuyoshi MARO, Satoshi MATSUNUMA, Masayuki KATO
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Abstract
A method of manufacturing the microwave oven cooking utensil includes: an upper heating body and a lower heating body each of which absorbs a microwave and generates a heat; and a heating space for heating a food material located between the upper heating body and the lower heating body, the heating being performed from above and below at the same time. Here, the upper heating body and the lower heating body are each formed by including a heat generating part containing ferrite and a molded foam body.
Claims20
A microwave oven cooking utensil, comprising:
- an upper heating body and a lower heating body each of which absorbs a microwave and generates a heat;
- and
- a heating space for heating a food material located between the upper heating body and the lower heating body, the heating being performed from above and below at the same time;
- wherein the upper heating body and the lower heating body are each formed by including a heat generating part containing ferrite and a molded foam body.
A method for manufacturing a microwave oven cooking utensil, comprising the steps of:
- molding step to form a molded foam body;
- incorporating step to incorporate a heat generating part containing ferrite that absorbs a microwave and generates a heat into the molded foam body by using a molding method including injection molding, insert molding and a two-color molding, or using a mechanical assembling method;
- the molding step includes:
- using a plasticizing cylinder having a plasticizing zone in which a thermoplastic resin is plasticized and melted to obtain a molten resin, a hungry zone in which the molten resin is in a hungry state, and an introduction port which is formed for introducing a physical foaming agent into the hungry zone;
- plasticizing and melting the thermoplastic resin to obtain the molten resin in the plasticizing zone;
- making the molten resin to be in the hungry state in the hungry zone;
- introducing a pressurized fluid containing the physical foaming agent at a constant pressure into the hungry zone and holding the hungry zone at the constant pressure;
- with the hungry zone held at the constant pressure, bringing the molten resin in the hungry state into contact with a pressurized fluid containing the physical foaming agent at the constant pressure in the hungry zone;
- and
- molding the molten resin in contact with the pressurized fluid containing the physical foaming agent into the molded foam body.
Dependencies are inferred from the claim text.