using pressure difference, e.g. by extrusion or by spraying

Shaping by internal pressure generated in the material, e.g. swelling or foaming > Component parts, details or accessories; Auxiliary operations > Feeding the material to be shaped > into an open space or onto moving surfaces, i.e. to make articles of indefinite length > using pressure difference, e.g. by extrusion or by spraying

Shaping by internal pressure generated in the material, e.g. swelling or foaming > Auxiliary operations > Feeding the material to be shaped > into an open space or onto moving surfaces, i.e. to make articles of indefinite length > using pressure difference, e.g. by extrusion or by spraying