초록 ▼

A die formed of a series of concentric rings is disclosed. An outer body has a series of communication ports for the introduction of a heating medium. An inner body having the same axial thickness as the outer body is placed inside the outer and in the annular space defined between the inner and out

A die formed of a series of concentric rings is disclosed. An outer body has a series of communication ports for the introduction of a heating medium. An inner body having the same axial thickness as the outer body is placed inside the outer and in the annular space defined between the inner and outer bodies a series of annular rings are placed. The annular rings each have a series of nozzles disposed in a circumferential ring and are formed with grooves on their outer walls to define jackets between the rings. The jackets are in communication with the communication ports to supply a heating medium to the jacket.

대표청구항 ▼

A plastic resin die for the production of pellets comprising; an outer sleeve, said outer sleeve having a pair of ports extending through said sleeve, an inner body disposed coaxial with said outer sleeve, said outer sleeve and inner body defining an annular space therebetween, a plurality of annula

A plastic resin die for the production of pellets comprising; an outer sleeve, said outer sleeve having a pair of ports extending through said sleeve, an inner body disposed coaxial with said outer sleeve, said outer sleeve and inner body defining an annular space therebetween, a plurality of annular rings assembled in said annular space, each of said annular rings having at least one nozzle extending in the axial direction and at least one groove formed in one wall portion to define at least one annular jacket, wherein said ports are in communication with said annular jacket.