Insertable barrier bag or liner for a narrow neck dispensing container and method of filling such a barrier bag or liner

A method of providing a dispensing container comprising the steps of:

• (a) providing a container;
• (b) inserting a sealed barrier structure into an interior of said container, said barrier structure being collapsed around a dip tube structure extending substantially within the barrier structure, said dip tube structure being connected to a retaining structure including a vent providing fluid communication between the interior of said container and the atmosphere;
• (c) filling said barrier structure with a product to be dispensed through said dip tube structure, thereby expanding said barrier structure to substantially fill the interior of said container;
• and
• (d) attaching a pump structure to said container in fluid communication with said dip tube structure.

A barrier structure for holding a product to be dispensed, comprising:

• (a) a fitment structure including an axially inner end, said fitment structure including a venting path on a radially outer surface of said fitment structure, said fitment structure further comprising a second venting path on a radially inner surface of said axially inner end;
• (b) a flexible bag structure sealingly secured to said axially inner end of said fitment;
• and
• (c) a dip tube structure connected to said axially inner end of said fitment and extending axially within an interior of said flexible bag structure.

An interior product container for use in a dispenser having an outer container structure including a neck portion, comprising:

• (a) a fitment structure including an axially inner end, said fitment structure being engageable with said neck portion, said fitment structure including a first vent for providing fluid communication between an interior of said container structure and the atmosphere when said product container is inserted within said container structure;
• (b) a flexible bag structure sealingly secured to said axially inner end of said fitment;
• and
• (c) a dip tube structure connected to said axially inner end of said fitment and extending axially within an interior of said flexible bag structure, wherein
• said fitment structure comprises a second vent for providing fluid communication between the interior of said flexible bag structure and the atmosphere during a filling process wherein product fills said flexible bag structure through said dip tube structure.

A dispensing apparatus comprising:

• (a) a container;
• (b) a sealed barrier structure within an interior of said container;
• (c) a retaining structure, said retaining structure including a vent providing fluid communication between the interior of said container and the atmosphere;
• (d) a dip tube structure extending within an interior of said barrier structure, said barrier structure being sealed around said dip tube structure, said dip tube structure being connected to said retaining structure;
• and
• (e) a pump structure connected to said retaining structure and in fluid communication with said dip tube structure,
• wherein said barrier structure is initially collapsed against said dip tube structure when not filled with a product to be dispensed, and wherein said barrier structure expands to substantially fill the interior of said container when filled with said product to be dispensed.