Mixing machine for producing foam within a bag

A machine useful for mixing first and second foam precursors to produce foam within a bag, the machine comprising:

• a base and a shell moveable relative each other between:
• (i) a base/shell disengaged position, in which the base and shell are spaced apart to permit insertion of the bag between the base and shell, and
• (ii) a base/shell engaged position in which the shell and base press together to hold the bag between the base and shell and to divide the bag into (1) a mixing chamber and (2) a remainder portion under the mixing chamber so that the mixing chamber is isolated from the remainder portion of the bag;
• a first nozzle adapted to inject the first foam precursor into the mixing chamber within the bag;
• a second nozzle adapted to inject the second foam precursor into the mixing chamber within the bag;
• and
• a mixer adapted to engage the mixing chamber of the bag to provide mixing energy to the first and second foam precursors within the mixing chamber of the bag when the base and shell are in the base/shell engaged position, thereby facilitating the foam reaction between the first and second foam precursors.