US 7,175,585 B2 · Heat-insulating container and apparatus for producing the same

Abstract

A heat-insulating container is used for an instant dried food and is excellent in heat-insulating property, design and economy. The container comprises 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 are integrally combined with each other so that an upper end of the sleeve is joined to an outer periphery of the side wall of the cup body, which is adjacent to the outward curled portion of the cup body, and an inner surface of the inward curled portion of the sleeve is joined to an outer periphery of a lower portion of the side wall of the cup body.

Claims10

Dependent claims

A sleeve forming apparatus for forming a sheet-like blank into a sleeve used as an outer package of a heat-insulating container, comprising:

a mandrel having a body portion which is capable of being fitted inside the sleeve and which is shorter than the sleeve;
a curling device for curling up a blank on the mandrel in such a manner that one end portion of the blank to which an adhesive agent is applied is located under another end portion of the blank to form a joint line;
a main-sealing device for pressing the joint line onto the mandrel;
an assist-sealing device for nipping one end portion of the joint line, which projects from the mandrel by a pair of nippers;
an end-curling device for pressing a projecting portion of the blank, which projects from the mandrel, toward the mandrel to form a curled portion of the sleeve;
and
a sleeve-ejecting device for removing the sleeve from the mandrel.

4 more elements

A sleeve forming apparatus for forming a sheet-like blank into a sleeve used as an outer package of a heat-insulating container, comprising:

a conveyor capable of circulating along a predetermined circulation path;
a plurality of mandrels arranged on the conveyor so as to leave a certain interval therebetween in a circulation direction of the conveyor;
a driving device for moving the conveyor intermittently by a pitch corresponding to the interval between the mandrels to feed each of the mandrel step by step with respect to stations defined along the circulation path;
a blank-supplying device for supplying the blank to a curling station selected from the stations with applying an adhesive agent to one end portion of the blank;
a curling device for curling up the supplied blank on each of the mandrels in such a manner that said one end portion of the blank is located under another end portion thereof to form a joint line;
a sealing device for pressing both end portions of the blank, which forms the joint line, to each other;
and
a sleeve-ejecting device provided in an ejecting station which is selected from the stations and is located forward from the curling station in the circulation direction for removing the sleeve from each of the mandrels;
wherein each of the mandrels has a body portion which is capable of being fitted inside the sleeve and which is shorter than the sleeve, and wherein the sealing device comprises a main-sealing device for Dressing the joint line of the blank to each of the mandrels and an assist-sealing device for nipping one end portion of the joint line, which projects from each of the mandrels, by a pair of nippers.

6 more elements

Dependencies are inferred from the claim text.

Heat-insulating container and apparatus for producing the same

Life of this patent

Heat-insulating container and apparatus for producing the same

Life of this patent

Abstract

Claims10