(57) An elongated strip of plastics in a flexible bag guides liquid in the bag to the
bag outlet 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 in combination
with the bag collapsing walls. The guide can take many forms including a net-like
configuration, a pattern of alternate recesses and projections on each face of a strip,
woven material, open cell sponge like material bouched randomly oriented fibres, material
having spaced air bubbles between strips of plastic, or other such structures that
can form flow paths in combination with bag wall Also disclosed is a stretched flexible
tube havmg a spiral slot formed therein to serve as a flow guide Methods of making
the bags and guides are further disclosed
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