Apparatus and method for pressure dispensing of high viscosity liquid-containing materials

A method for dispensing liquid-containing material, comprising:

• providing a pressure dispensing apparatus kit that includes (a) a rigid container including a neck defining a container opening, (b) a collapsible liner arranged within the container and comprising an aperture-defining liner fitment arranged in or along the neck of the rigid container, (c) a downwardly-extending dip tube arranged within the liner, (d) a connector including a probe defining a fluid flow passage therethrough, and (e) a stress concentrator that provides sealing engagement between the downwardly-extending dip tube and at least one of the probe and the aperture-defining liner fitment;
• providing a set of instructions on a tangible medium, the instructions comprising:
• threadably engaging the connector to the neck of the rigid container to cause a lower portion of the probe to seat an upper portion of the dip tube against an inner surface of the dip tube to sealingly engage the dip tube between the probe and fitment;
• and
• supplying pressurized gas through the connector to a compression space that is in fluid communication with the collapsible liner and the rigid container to compress the collapsible liner.

A pressure dispensing apparatus comprising:

• a rigid container comprising a neck defining a container opening;
• a fitment retainer defining an aperture and arranged in or along the neck of the container;
• a collapsible liner arranged within the container, the collapsible liner comprising an aperture-defining liner fitment retained by the fitment retainer;
• a downwardly-extending dip tube arranged within the liner;
• and
• a connector including a probe defining a fluid flow passage therethrough, wherein a lower portion of the probe includes a stress concentrator arranged to directly engage an upper portion of the dip tube when the connector is secured to the neck of the rigid container to provide a liquid tight seal.