초록 ▼

Method of and apparatus for forming, filling and sealing packages in which flexible packaging material is formed into tubing, the tubing is fed downwardly and transversely sealed at package length intervals by a pair of sealing members, a quantity of the product with which the packages are to be fil

Method of and apparatus for forming, filling and sealing packages in which flexible packaging material is formed into tubing, the tubing is fed downwardly and transversely sealed at package length intervals by a pair of sealing members, a quantity of the product with which the packages are to be filled is delivered into the tubing during an interval of time between successive sealing operations, a contraction is formed in the tubing, after each delivery of product, above the level of the next seal to be made, the contraction is transmitted down on the tubing between the sealing members from above to below said level, thereby to compact the product, and the next seal is then made.

대표청구항 ▼

The method of forming, filling and sealing packages comprising forming a flexible packaging material into tubing, the tubing extending downwardly, feeding the tubing downwardly and transversely sealing it at package length intervals, and delivering a quantity of the product with which the packages a

The method of forming, filling and sealing packages comprising forming a flexible packaging material into tubing, the tubing extending downwardly, feeding the tubing downwardly and transversely sealing it at package length intervals, and delivering a quantity of the product with which the packages are to be filled into the tubing during an interval of time between successive sealing operations, the transverse seals being formed by a pair of sealing members movable relative to one another between an open position and a closed position in sealing engagement with the tubing, and, with the sealing members open and after the delivery of the product into the tubing and before the next seal is made, squeezing the tubing above the sealing members by positively moving a pair of stripper members relative to one another independently of the movement of the sealing members from an open position to a closed position wherein the stripper members are closely adjacent one another on opposite sides of the tubing in engagement with the tubing above the sealing members, then holding the stripper members in their closed position while moving them generally straight down on the tubing between the sealing members from above to below the sealing members, thereby to compact the product in the tubing below the level of the next seal to be made, closing the sealing members on the tubing above the stripper members, and then opening the stripper members and the sealing members and moving the stripper members up between the sealing members returning them to their open position.