| 摘要 |
A butter-like product is recirculated from a mixing bowl (10) by a recirculating pump (14) until its viscosity is adjusted to the equivalent of 16,000 to 18,000 centipoise at 75 DEG F. The viscosity adjusted butter is pumped through an aerator (22) to a closed holding tank (40). A positive displacement pump (42) recirculates the viscosity adjusted butter from the holding tank, through a recirculating feed line (44) at a preselected pressure, and back to the holding tank. A plurality of packaging machines (C) each include a metering pump (60) which pumps metered amounts of the butter from the recirculating feed line through at least one filling nozzle (62). Sheets of heat-sealable plastic material from rolls (64, 66) are heat sealed (70, 72, 74, 76) into squeeze packets surrounding the metered volumes of butter. A conveyor (100) conveys the filled squeeze packets to a fluid cooling hood (104) in which the squeeze packets are bathed in a cooling fluid, e.g., nitrogen, before the packaged butter can be adversely affected by residual heat from the heat seals.
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