公开(公告)号：US20210053253A1

公开(公告)日：2021-02-25

申请号：US16979085

申请日：2019-02-28

Applicant: COLORMATRIX HOLDINGS, INC.

Inventor： Brian JONES ,  David WHITEHEAD ,  Ian CAMPBELL ,  David LOFTUS ,  Andrew OVEREND

IPC: B29B7/82 ,  B29B7/60 ,  B29B7/72 ,  B29B7/76 ,  B29B7/94 ,  B29C48/29 ,  B29C48/285 ,  B29C48/385 ,  B29C48/797 ,  B29C48/39

Abstract: Polymeric Materials An injector (14) for injecting liquid formulation into molten polymer includes a conduit (117) having regions (44, 46) which are secured within a wall of an extruder (19). Conduit (117) includes an annular collar (120) having an upwardly facing annular surface (122) which is arranged to bear against part of a sleeve nut (124). Conduit (117) is arranged within a port (125) which includes a screw-threaded wall (126). The sleeve nut (124) includes a cylindrical body (146) having an inwardly facing cylindrical wall which is arranged to define a cylindrical air gap (148) between itself and an outer wall (147) of conduit (117). Region (150) of the sleeve nut is screw-threadedly engaged in wall (126) of the extruder. In use, cool compressed air is introduced into the assembly in the direction of arrow (170) and it flows through the assembly to cool it.