using compacting means

Full Title

Methods or machines specially adapted for the production of tubular articles > by casting into moulds > using compacting means

Child Classifications

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• B28B 21/12 tamping or ramming the material or the mould elements
• B28B 21/14 vibrating, e.g. the surface of the material
• B28B 21/18 using expansible or retractable mould or core elements
• B28B 21/22 using rotatable mould or core parts
• B28B 21/36 applying fluid pressure or vacuum to the material (combined with slip-casting B28B21/08)