Abstract: A vacuum packaging device according to the present invention comprises: a vacuum packaging unit for vacuum-packaging a packaging sheet; and a cutting unit provided on the vacuum packaging unit so as to form a notch for tearing on the packaging sheet.

Abstract: A vacuum device according to the present invention may comprise: a vacuum unit for suctioning air from inside a packaging back through a check valve of the packaging back, thereby generating a vacuum therein; and a clamping unit provided on the vacuum unit so as to clamp the packaging back such that the check valve of the packaging back airtightly communicates with an air suction portion of the vacuum unit.

Abstract: A vacuum device according to the present invention may comprise: a vacuum unit for suctioning air from inside a packaging back through a check valve of the packaging back, thereby generating a vacuum therein; and a clamping unit provided on the vacuum unit so as to clamp the packaging back such that the check valve of the packaging back airtightly communicates with an air suction portion of the vacuum unit.

Abstract: A vacuum packaging device according to the present invention comprises: a vacuum packaging unit for vacuum-packaging a packaging sheet; and a cutting unit provided on the vacuum packaging unit so as to form a notch for tearing on the packaging sheet.

Abstract: There is provided a vacuum valve used in a vacuum storage container, having a simplified configuration, being installable in the container, and improved in vacuum maintenance. The vacuum valve includes a base having a hole; a sealing film attached to a flexible film and covering the hole between the base and the flexible film; and the flexible film attached to an upper surface of the base and the sealing film using an adhesive layer, wherein the flexible film is movable to an open position, and when the flexible film is disposed in the open position, the sealing film attached to the flexible film causes the hole to be open and an air path is formed between the sealing film and the base such that air passes therethrough.

Abstract: There are provided a pressure sensor sensing or measuring air pressure and a device for preventing air inflow, which is used to prevent air, moisture and foreign substances from flowing into the pressure sensor. The pressure sensor includes an air flow part through which air to be measured, the pressure of which is to be measured, flows, a pressure sensing part sensing the pressure of the air to be measured, which flows through the air flow part, and an air blocking part installed between the air flow part and the pressure sensing part, preventing the air to be measured from flowing into the pressure sensing part, and causing, at least, a movement or a deformation according to a pressure change of the air to be measured. The pressure sensor completely prevents moisture or foreign substances from flowing into the pressure sensor, thereby minimizing defects of the pressure sensor.