Ultra high-temperature plastic package and method of manufacture

A method of increasing the melting temperature of a plastic material, comprising:

• injection molding the plastic material into a shape;
• increasing the temperature of the molded material in its molded shape at a rate of between about 0.1° C. per hour and about 10° C. per hour until the temperature of the material reaches a first temperature between about 10° C. and about 30° C. below an initial melting temperature of the material;
• maintaining the temperature of the material between about 10° C. and about 30° C. below the initial melting temperature of the material for at least about one hour;
• and
• increasing the temperature of the material in its molded shape at a rate of between about 0.1° C. per hour and about 10° C. per hour until the temperature of the material reaches a second temperature between about 40° C. and about 50° C. below a desired melting temperature of the material.

A method of manufacturing a circuit package, comprising:

• injection molding a polymeric material to a flange, thereby forming a frame;
• increasing the temperature of the frame in its molded shape at a rate of between about 0.1° C. per hour and about 10° C. per hour until the temperature of the frame reaches a first temperature between about 10° C. and about 30° C. below an initial melting temperature of the polymeric material;
• maintaining the temperature of the polymeric material between about 10° C. and about 30° C. below the initial melting temperature of the polymeric material for at least about one hour;
• and
• increasing the temperature of the frame at a rate of between about 0.1° C. per hour and about 10° C. per hour until the temperature of the frame reaches a second temperature between about 40° C. and about 50° C. below a desired melting temperature of the frame which is higher than the initial melting temperature of the frame.

A method of manufacturing an article, comprising:

• injection molding a polymeric material to a component of the article;
• increasing the temperature of the molded polymeric material at a rate of between about 0.1° C. per hour and about 10° C. per hour until the temperature of the polymeric material reaches a first temperature between about 10° C. and about 30° C. below an initial melting temperature of the polymeric material;
• maintaining the temperature of the molded polymeric material between about 10° C. and about 30° C. below the initial melting temperature of the polymeric material for at least about one hour;
• and
• increasing the temperature of the molded polymeric material at a rate of between about 0.1° C. per hour and about 10° C. per hour until the temperature of the polymeric material reaches a second temperature between about 40° C. and about 50° C. below a desired melting temperature of the polymeric material which is higher than the initial melting temperature of the polymeric material.