摘要:
An area where a liquid substance (2), for instance, is present inside a bag (W), that is, the area where the liquid substance adheres to the inner surface of the bag, is ultrasonically sealed (thus forming an ultrasonically sealed area (1)), and then an area that is separated from the ultrasonically sealed area by a predetermined distance (6) toward the edge of the mouth of the bag is heat-sealed (thus forming a heat-sealed area (5)), so that the a portion of the liquid substance, that is separated and is present above the ultrasonically sealed area, is sealed inside the space (6) between the two sealed areas (1, 5).
摘要:
A bag made of an outer bag (3) and an inner bag (2). The inner bag, inside the outer bag, has an opening in the upper edge, and the inner and outer bags are sealed along the upper edges, on either side of the respective bags, to form sealed portions (8) and (9), and the inner bag and outer bag are further sealed together at two lateral side edges and lower edge to form sealed portions (11) and (12) and sealed portion (13), thus forming gas filling compartments (14) and (15). Cut-ins (18) and (19) are formed in the upper corners of the outer bag, and supplemental sealed portions (16) and (17) connected to the sealed portions (8) and (9) are formed. Air (gas) is blown into the gas filling compartments (14) and (15) through the cut-ins and then the overall bag mouth including the cut-ins is sealed.
摘要:
A method for sealing-in a gas in a gas filling compartment (5) of a bag (1) having a cut-in (6) formed near the upper edge of the gas filling compartment. In the method, two edges of the bag with the contents inserted therein are gripped by grippers and suspended, the blow-in port of a gas (air) blow-in nozzle (11) is brought to contact the cut-in, the back surface side of the bag is supported by a backing member (12), gas (air) is blown into the gas filling compartment, and the position below the cut-in is held from both sides of the bag by a gas cut-off grippers (7) while the gas blow-in continues, so that the gas inside the gas filling compartment is not allowed to escape from the cut-in, and then the entire bag mouth, including the cut-in, is sealed.
摘要:
An area where a liquid substance (2), for instance, is present inside a bag (W), that is, the area where the liquid substance adheres to the inner surface of the bag, is ultrasonically sealed (thus forming an ultrasonically sealed area (1)), and then an area that is separated from the ultrasonically sealed area by a predetermined distance (6) toward the edge of the mouth of the bag is heat-sealed (thus forming a heat-sealed area (5)), so that the a portion of the liquid substance, that is separated and is present above the ultrasonically sealed area, is sealed inside the space (6) between the two sealed areas (1, 5).
摘要:
A bag opening method and apparatus for use in bag filling and packaging in which a bag B is gripped at its laterally opposite side edges with a pair of gripping members and moved along a predetermined path. A pair of suction cups 23 disposed facing each other at respective mutually spaced standby positions are moved to respective closest positions at which a vacuum is applied to the suction cups to cause them to adhere to the outer surfaces of the opposite side walls of the bag. The suction cups are retracted away from each other to respective intermediate positions between the closest and standby positions. The suction cups having reached the intermediate positions are stopped there for a predetermined period of time. Thereafter, the suction cups are retracted from the intermediate positions to the standby positions, respectively. The vacuum acting upon the suction cups is measured at some point during a time period which starts immediately before the suction cups reach the intermediate positions and ends at the termination of the period of time during which the suction cups are stopped at the intermediate positions. The application of the vacuum to the suction cups is stopped at a time between a time after the measurement of the vacuum and a time immediately after the starting of movement of the suction cups to the standby positions. The measured vacuum is compared to a preset reference value to judge whether or not the bag has been opened satisfactorily. The positions of the intermediate positions are changed according to the width of the bag.