초록 ▼

Bags supplied in a chain are advanced step by step through a filling station wherein lip flanges on the bag tops are clampingly gripped and pulled apart to separate a reclosable profile fastener, the bag filled and then released from the clamps, and advanced from the filling station. In one arrangem

Bags supplied in a chain are advanced step by step through a filling station wherein lip flanges on the bag tops are clampingly gripped and pulled apart to separate a reclosable profile fastener, the bag filled and then released from the clamps, and advanced from the filling station. In one arrangement clamp assemblies separate for pulling the flanges apart to open the bag to be filled and a filling nozzle may be inserted down between the separated clamp assemblies. In another embodiment the clamp assemblies include a collapsible and expandable multi-panel funnel assembly through which bag filling contents are delivered into the open bag. Each filled bag is advanced from the filling station and the fastener reclosed after leaving the filling station. The lip flanges may be treated along a transverse separation line to facilitate separation of the filled bag from the next succeeding bag.

대표청구항 ▼

A method of seriatim filling of closed bottom bags at a filling station, and wherein the bags are of the kind supplied in a chain and have closed sides and aligned tops closed by reclosable profiled fastener means from which a pair of confronting lip flanges project upwardly and extend continuously

A method of seriatim filling of closed bottom bags at a filling station, and wherein the bags are of the kind supplied in a chain and have closed sides and aligned tops closed by reclosable profiled fastener means from which a pair of confronting lip flanges project upwardly and extend continuously along the top of the chain, comprising: receiving each of said lip flanges between separable clamping means; permitting relative movement of the lip flanges and the clamping means in an open phase of the clamping means; firmly clamping said lip flanges in said clamping means in a clamping phase of the clamping means; cyclically operating said clamping means through each of said phases, and in said clamping phase actuating the clamping means for pulling said lip flanges apart and thereby separating said reclosable fastener means of each bag at said bag filling station; and after filling of each bag at said station advancing the filled bag from said station and reclosing the fastener means of the filled bag. Apparatus including a filling station for seriatim filling of closed bottom bags of the kind supplied in a chain and wherein the bags have closed sides and aligned tops closed by reclosable profiled fastener means from which a pair of confronting lip flanges project upwardly and extend continuously along the top of the chain, and comprising: separable clamping means for receiving each of said lip flanges therebetween and having an open phase permitting relative movement of the lip flanges and the clamping means, and a clamping phase wherein said lip flanges are firmly clamped by said clamping means; means for cyclically operating said clamping means through each of said phases, and adapted in said clamping phase for actuating the clamping means for pulling said lip flanges apart and thereby separating said reclosable fastener means of each bag at said filling station; and means for advancing each filled bag from said filling station and for reclosing said fastener means of the filled bag.