Patent ID: 6663926
Filing Date: 2003-12-16
Classification: B31B,B31F,B65D,Y10T

Abstract:
A heat-insulating container comprising:a paper cup body with a bottom, which has an inner surface coated with a polyolefin resin and is provided with an outward curled portion formed at an upper opening end of the cup body and at least one horizontal rib formed on a side wall of the cup body so as to project outward therefrom; and an inverse-frustoconical paper sleeve provided with an inward curled portion formed at a lower end of the sleeve; the cup body and the sleeve being integrally combined with each other so that an upper end on the sleeve is bonded to an outer periphery of the side wall of the cup body at a position adjacent to the outward curled portion of the cup body, and an inner surface of the inward curled portion of the sleeve contacts an outer periphery of a lower portion of the side wall of the cup body so that a space increasing gradually from an upper portion of the container toward the bottom for heat-insulating is formed between the side wall of the cup body and the sleeve, the horizontal rib being projected into the space.