High- output operations to mark blow molding displays

This is a survey of a few newcomers in the field of blow molding which are shown at Plastics show, Chicago, 1971. Several machinery units are briefly described with particular attention to systems for in- plant blow molding connected with fully automated materials handling and production lines. Most of new introduced processing machines feature solid- state controls and run with programmed two- parison PVC heads and multicavity molds.