天然高分子物料的单螺杆挤压探讨

Single Screw Extruders in Food Processing

用φ45全程视窗单螺杆挤出机,首次对玉米粉等天然高分子物料的挤出过程作直观的观察、测试、验证。研究得知:在加料段,低水分和低油脂的粉状食品原料可近似地看作固体塞流动。天然高分子物料在挤出加工过程中,难以形成明显的固体床和熔池。并通过实验挤压,初步分析了挤压诸加工参数,及其对挤出产品性能的影响。

The Φ45 visual single screw extrusion was originaly used in studying natural food materials such as the corn flour. The flow of lower-moisture or lower-oil powder materials can approximately be considered as solid plug flow in the feeding section. The conveying cause of natural food material cannot develop into solid-bed and melting-poor condition. It also analyzed the effect of different parameters of extrusion process on product property.