Package making – Methods – With contents treating
Patent
1998-08-06
2000-12-05
Tolan, Ed
Package making
Methods
With contents treating
53523, 53527, 141 71, 264102, B65B 124
Patent
active
061550280
ABSTRACT:
A method for packing a material includes air tapping material contained in a feeding hopper to pack it into a container which is to be filled with the material, and separating the material in the feeding hopper and the container into a portion of the material packed in the container where the material has a uniform density and a portion which is the material remaining in the feeding hopper. The air tapping process includes subjecting the space that is supplied with the material to be packed to air pressure which is switched alternately from a low pressure state to a high pressure state and back to a low pressure state or from a high pressure state to a low pressure state and then back to a high pressure state, in either case causing the material to be packed to a high density. The portion of the material remaining in the feeding hopper is separated from the portion of the material packed in the container where the material has a uniform density by a grid provided in the opening of the feeding hopper located toward the container. The container into which the material is packed may be the cavity of a die used in the die pressing of compacts, such as a rubber mold used in cold isostatic pressing.
REFERENCES:
patent: 4813818 (1989-03-01), Sanzone
patent: 5406990 (1995-04-01), Haeberli
patent: 5725816 (1998-03-01), Sagawa et al.
patent: 5775389 (1998-07-01), Griffin
patent: 5809744 (1998-09-01), Villines et al.
patent: 5826633 (1998-10-01), Parks et al.
patent: 5839618 (1998-11-01), Chatterjea et al.
Nagata Hiroshi
Sagawa Masato
Watanabe Toshihiro
Intermetallics Co., Ltd.
Tolan Ed
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