| 摘要 |
PROBLEM TO BE SOLVED: To remove bubbles from an observation range when observing the inside of a container which is made of a flexible packaging material in which liquid mixed with bubbles is encapsulated.SOLUTION: There is provided a bubble removal method. When observing the inside of a container made of a flexible packaging material in which liquid mixed with bubbles is encapsulated, a part of the inside of the container is set as an observation range, and bubbles are removed from the observation range. Bubbles are pushed outside the observation range by pressing a part of the upper surface of the container positioned above the observation range from above with a pressing member and moving the pressing member. At this point, the pressing member is a plate-shaped member, and by horizontally pushing the pressing member against a part of the upper surface of the container and vertically moving the container repeatedly, or by pushing the pressing member against a part of the upper surface of the container at a certain angle and moving or swinging the container until the member becomes horizontal to the upper surface of the container, bubbles are pushed outside the observation range. Or alternatively, one or more pressing members are used, at least one pressing member is a rod-like member, and by horizontally pushing the pressing member against the upper surface of the container to move the member in a horizontal direction, bubbles are pushed outside the observation range. |
