Plasticisers, homogenisers or feeders comprising two or more stages

Introduced: January 2019

Full Title

Full titles differ between systems:

IPC:

Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor > Component parts, details or accessories; Auxiliary operations > Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die > Plasticisers, homogenisers or feeders comprising two or more stages

CPC:

Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C49/04) > Component parts, details or accessories; Auxiliary operations > Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die > Plasticisers, homogenisers or feeders comprising two or more stages

Of 5 combined children, 3 exist in both systems.

2 codes are CPC-only extensions.

IPC defines codes here since 2019.

Child Classifications

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B29C 48/38 using two or more serially arranged screws in the same barrel since 2019 IPC+CPC Available in IPC and CPC
B29C 48/385 using two or more serially arranged screws in separate barrels since 2019 IPC+CPC Available in IPC and CPC
B29C 48/387 CPC only CPC only
B29C 48/388 CPC only CPC only
B29C 48/39 a first extruder feeding the melt into an intermediate location of a second extruder since 2019 IPC+CPC Available in IPC and CPC