Abstract: A plastics material bottle is collapsible by applying axial compression, the bottle comprising a cylindrical body having a polygonal cross-section, e.g. a section that is substantially square or rectangular with rounded corners (18), the body being formed with transverse fluting grooves (14) which include fold starters (16) situated in the immediate vicinity of the above-mentioned rounded corners (18). The invention is particularly applicable to bottles for containing beverages such as mineral water, for example.

Abstract: A molded plastics bottle including a bottom having improved strength and stability, the bottom comprising a concave central portion (26) which connects via a plane annular surface (28) with a convex peripheral surface (30) for standing on a support surface (32), radial grooves (38) being formed in said convex annular surface (30) and connecting tangentially with the plane annular surface (28).

Abstract: An axially crushable bottle made of plastics material and formed with transverse corrugations over the major portion of its height has fold starters in each corrugation, which fold starters project outwards from the bottoms of the corrugations and are angularly offset from one corrugation to another.

Abstract: As described herein, there is provided safety apparatus for continuous rotary blow molding machines of the type wherein the extruder operates independently of the machine to continuously extrude plastic tube through its die head during the interruption of operation by the blow molding machine. The safety apparatus includes a blow tube mounted on the extruder for directing air under pressure against the plastic tube to deflect the tube away from the molds of the molding machine upon interruption of the operation of the blow molding machine. A conveyor, operative at the same time as the blow tube and extending in a direction coincident with the direction of pressurized air, receives the diverted plastic tube and carries the plastic tube to a receptacle. The blow tube and conveyor remain operative at least until the machine is restarted.