Title:
VACUUM OPENING DEVICE AND OPENING METHOD
Document Type and Number:
Japanese Patent JP2021123365
Kind Code:
A
Abstract:
To provide a vacuum opening device and an opening method for opening a packaging material by an impact decompression force due to rapid decompression using a device having a relatively small size and a simple structure.SOLUTION: A step of rapidly reducing the pressure in a first vacuum vessel 11 that is reduced by holding the pressure in a second vacuum vessel 12 at the pressure near the vacuum in advance is provided by using a device including the vacuum vessel 11 with a pressure gauge 10, a vacuum pump 30 that is connected to the first vacuum vessel 11 via at least two valves that open and close a flow path and sucks and depressurizes the air in the first vacuum vessel 11, and the second vacuum vessel 12 branched from between the two valves and connected via a third valve 23.SELECTED DRAWING: Figure 1
Inventors:
TAKAHASHI TATSUYA
OKAJIMA KOICHI
SAKATA TOMOAKI
KOMATSU HIDEKAZU
YOSHIDA IZUMI
OKAJIMA KOICHI
SAKATA TOMOAKI
KOMATSU HIDEKAZU
YOSHIDA IZUMI
Application Number:
JP2020016404A
Publication Date:
August 30, 2021
Filing Date:
February 03, 2020
Export Citation:
Assignee:
GUNMA PREFECTURE
SANJYO ENGNEERING INC
SANJYO ENGNEERING INC
International Classes:
B65B69/00