| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cup type paper container which excels in applicability to heating by a hot plate, and is not browned even if it is directly heated by a microwave oven, and to which retort sterilization treatment can be applied. <P>SOLUTION: The paper container includes a cylindrical barrel part, a top surface part and a bottom surface part. The top surface part has a periphery part bent upward, and the barrel part has a barrel part stuck part obtained by overlapping and sealing both side edges of a blank for forming a barrel part, an upper folding-back part formed by folding back the upper end of the barrel part to the inside, and a flange part formed by rolling the lower end of the barrel part to the outside and then crushing it to be flat. The periphery part of the top surface part is sealed on a tight contact condition while it is inserted in the upper folding-back part of the barrel part, and further the flange part and the bottom surface part are sealed on a tight contact condition. <P>COPYRIGHT: (C)2013,JPO&INPIT |
