초록 ▼

A heating structure in the form of a sandwich is composed of first and second external elements, each having a face which is directed toward the other element, with the first external element constituting a heating plate, and the heating structure further including a heating unit interposed between

A heating structure in the form of a sandwich is composed of first and second external elements, each having a face which is directed toward the other element, with the first external element constituting a heating plate, and the heating structure further including a heating unit interposed between the first and second external elements. The heating unit includes at least one substantially flat resistive heat generating element; a first layer of thermoplastic resin in which the heat generating element is embedded; an upper electrical insulating sheet and a lower electrical insulating sheet between which the resistive heat generating element and the first layer of thermoplastic resin are interposed to form a sandwich structure, with the first layer of thermoplastic resin adhering to each of the electrical insulating sheets; and at least one second layer of thermoplastic resin contacting one of the external elements and adhering the one of the external elements to the heating unit. The heating unit further includes at least one further electrical insulating sheet contacting, and adhering to, the at least one second layer of thermoplastic resin; and an intermediate layer of adhesive material interposed between, and adhering to, one of the upper and lower electrical insulating sheets and the at least one further electrical insulating sheet.

대표청구항 ▼

[ What is claimed:] [1.] Heating structure in the form of a sandwich, said structure comprising first and second external elements, each having a face which is directed toward the other element, with said first external element constituting a heating plate, and said heating structure further compris

[ What is claimed:] [1.] Heating structure in the form of a sandwich, said structure comprising first and second external elements, each having a face which is directed toward the other element, with said first external element constituting a heating plate, and said heating structure further comprising a heating unit interposed between said first and second external elements, wherein said heating unit comprises:at least one substantially flat resistive heat generating element;a first layer of thermoplastic resin in which said heat generating element is embedded;an upper electrical insulating sheet and a lower electrical insulating sheet between which said resistive heat generating element and said first layer of thermoplastic resin are interposed to form a sandwich structure, with said first layer of thermoplastic resin adhering to each of said electrical insulating sheets; andat least one second layer of thermoplastic resin contacting one of said external elements and adhering said one of said external elements to said heating unit, and wherein said heating unit further comprises:at least one further electrical insulating sheet contacting, and adhering to, said at least one second layer of thermoplastic resin; andan intermediate layer of adhesive material interposed between, and adhering to, one of said upper and lower electrical insulating sheets and said at least one further electrical insulating sheet.