Isometric deepening screw of extruder of melt-blown cloth machine

The change speed of the equidistant deepening screw from the depth of the screw groove can be divided into two forms:

① Isometric gradient screw: The depth of the screw groove from the beginning of the feeding section to the last section of the homogenization section is gradually shallower. On the longer melting section, the groove depth gradually becomes shallower.

② Equidistant abrupt screw: that is, the screw groove depth of the feeding section and the homogenization section does not change, and the screw groove depth at the melting section suddenly becomes shallower