| 摘要 |
Collapsible bag container for use in fluid dispensing systems. One of the major problems associated with collapsible bag dispensers is the tendency of the walls of the collapsing bag to block access of the fluid to the bag outlet. The present invention obviates this problem by providing an elongated flexible strip of plastic in a flexible bag (12) which guides liquid in the bag to the bag outlet (14, 236) when a vacuum is applied to the outlet. The flow guide has structure which forms a plurality of interconnected spaces that in turn form flow paths to the outlet. The guide can take many forms including a net-like configuration (18), a pattern of alternate recesses and projections on each face of a strip (50), woven material (104), open cell sponge-like material (84), bunched randomly oriented fibers (106), material having spaced air bubbles between strips of plastic (86), or other such structures that can form flow paths. Also disclosed is a stretched flexible tube having a spiral slot formed therein to serve as a flow guide (60). Methods of making the bags and guides are further disclosed, including heat sealing a flange on the guides to an outlet spout. |
