Title:
NOVEL METHOD FOR MANUFACTURING VACUUM HEAT-INSULATING CONTAINER, AND VACUUM HEAT-INSULATING CONTAINER MANUFACTURED THEREBY
Document Type and Number:
WIPO Patent Application WO/2019/007099
Kind Code:
A1
Abstract:
Disclosed are a method for manufacturing a vacuum heat-insulating container, and a vacuum heat-insulating container manufactured thereby. The manufacturing method comprises the followings: step A, making the bottom of a shell (11) protrude from inside to outside to form an air vent groove (111); step B, welding a low-temperature sealing layer (2) onto an inner wall of the air vent groove (111), so that the air vent groove (111) and the low-temperature sealing layer (2) form a composite layer (3); and step C, providing an air vent hole (31) in the composite layer (3). The air vent hole (31) is blocked by the low-temperature sealing layer (2) from the interior of a container main body, so that the air in a heat-insulating cavity (13) can also be completely drawn off by means of vacuumizing in a state where the container main body is placed upright, thereby realizing the perfect vacuum and improving the heat-insulating quality. Moreover, the low-temperature sealing layer (2) is welded onto the inside of the shell (11), the direction of gravity of the low-temperature sealing layer (2) is the same as the direction of an adhesive force between the low-temperature sealing layer and the shell (11), and since the shell (11) has a function of supporting the low-temperature sealing layer, the low-temperature sealing layer (2) will not easily fall off after being used for a long time, such that air can effectively be prevented from entering the heat-insulating cavity (13) by passing through the air vent hole (31), thus ensuring the heat-insulating effect of a vacuum heat-insulating container.
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Inventors:
LIU MINYE (CN)
Application Number:
PCT/CN2018/078673
Publication Date:
January 10, 2019
Filing Date:
March 12, 2018
Export Citation:
Assignee:
FOSHAN KEITH TITANIUM TECH CO LTD (CN)
International Classes:
A47J41/02; B65D81/38
Foreign References:
| CN107296522A | 2017-10-27 | |||
| CN2713949Y | 2005-08-03 | |||
| CN1095035A | 1994-11-16 | |||
| TW340604U | 1998-09-11 | |||
| EP0597773A1 | 1994-05-18 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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