Extrusion dies play an important role in shaping and imparting textural characteristics to extruded products,but designs of food extrusion dies have been mainly performed on an empirical basis.

• 挤压模头在成型和赋予挤压产品构造特征中扮演着重要的角色,但是人们只能根据经验来设计食品挤压模头。