DIFF Subgroup
B29C 48/21 the layers being joined at their surfaces
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 > Articles comprising two or more components, e.g. co-extruded layers > the components being layers > the layers being joined at their surfaces
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) > Articles comprising two or more components, e.g. co-extruded layers > the components being layers > the layers being joined at their surfaces
No child classifications to compare. This is a leaf node in both IPC and CPC.