with annular openings, e.g. for forming tubular articles

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 > Extrusion nozzles or dies > with annular openings, e.g. for forming tubular articles

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 > Extrusion nozzles or dies (extrusion characterised by the shape or cross-section of the extruded article B29C48/03) > with annular openings, e.g. for forming tubular articles

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

IPC defines codes here since 2019.

Child Classifications

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B29C 48/325 adjustable since 2019 +1 CPC IPC+CPC Available in IPC and CPC
B29C 48/33 with parts rotatable relative to each other since 2019 IPC+CPC Available in IPC and CPC
B29C 48/335 Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles since 2019 +2 CPC IPC+CPC Available in IPC and CPC
B29C 48/34 Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated since 2019 IPC+CPC Available in IPC and CPC