Collapsible container for liquids

A collapsible container for use in containing and dispensing a liquid, comprising:

• a flexible bag having a first bag wall and a second bag wall, said first bag wall having an interior surface with at least one groove;
• and
• a spout disposed through said second bag wall for dispensing liquid from said bag;
• wherein a majority of said first bag wall has a first thickness and said first bag wall has a second thickness delimited by said at least one groove, wherein said first thickness is greater than said second thickness;
• wherein said at least one groove is in liquid communication with said spout as said bag collapses to permit substantially complete withdrawal of liquid from said bag.

A collapsible container for use in containing and dispensing a liquid, comprising:

• a flexible bag having a bag wall with an interior surface, said interior surface having at least one groove;
• and
• a spout disposed through said bag wall for dispensing liquid from said bag;
• wherein said at least one groove is in liquid communication with said spout as said bag collapses to permit substantially complete withdrawal of liquid from said bag;
• wherein said bag further comprises a stiffener that overlies said at least one groove as said bag collapses to help maintain liquid communication between said at least one groove and said spout.

A collapsible container for use in containing and dispensing a liquid, comprising:

• a flexible bag having a first bag wall and a second bag wall, said first bag wall having an interior surface with at least one groove;
• and
• a spout disposed through said second bag wall for dispensing liquid from said bag;
• wherein said at least one groove is in liquid communication with said spout as said bag collapses to permit substantially complete withdrawal of liquid from said bag;
• wherein said bag further comprises a stiffener that overlies said at least one groove as said bag collapses to help maintain liquid communication between said at least one groove and said spout.