| 摘要 |
An apparatus for compressing and packing a stack of flattened bags or the like that comprises a compression chamber for receiving the stack, an opening in said chamber through which the said stack can be inserted, a plunger for introducing the stack in said chamber and compressing it against a backing member of the said chamber, two freely rotatable supply rolls of thermoplastic sheets disposed on opposite sides of said opening and welding means for interconnecting said sheets by a transverse weld seam to form a web of packaging material. The web is disposed across said opening to be carried into the chamber by the stack when said stack is introduced. Means are provided for displacing said plunger at right angles to said weld seam after its compression stroke. A transversely movable folding device is disposed at the same level as the plunger at the end of its compression stroke. The folding device is effective to maintain compression of the stack after the plunger has been displaced; to close the web about the stack to define a packaging sleeve for said stack from said web; and to bring the sheets of said web together in readiness for forming a second web of packaging material for a second stack. The welding means are also effective in cooperation with said folding device to weld the packaging sleeve closed about the stack and to sever the packaging sleeve from said sheets so that the said sheets remain interconnected to form said second web.
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