Abstract: A device and method are disclosed for the production of hollow bodies, especially plastic bottles, wherein a section of a plastic flexible hose is placed in a cavity of a blow mold by an extruder head according to a predefined clocked pulse. The plastic flexible hose is inflated inside the blow mold by a blow mandrel by overpressure according to the blow mold cavity. The manufactured inflated hollow body is subsequently removed from the mold. The plastic hose can be continually held on opposite sides of the blow mold arrangement during the entire extrusion and blow cycle.

Abstract: A device and method are disclosed for the production of hollow bodies, especially plastic bottles, wherein a section of a plastic flexible hose is placed in a cavity of a blow mould by an extruder head according to a predefined clocked pulse. The plastic flexible hose is inflated inside the blow mould by a blow mandrel by overpressure according to the blow mould cavity. The manufactured inflated hollow body is subsequently removed from the mould. The plastic hose can be continually held on opposite sides of the blow mould arrangement during the entire extrusion and blow cycle.

Abstract: A device and method are disclosed for the production of hollow bodies, especially plastic bottles, wherein a section of a plastic flexible hose is placed in a cavity of a blow mould by an extruder head according to a predefined clocked pulse. The plastic flexible hose is inflated inside the blow mould by a blow mandrel by overpressure according to the blow mould cavity. The manufactured inflated hollow body is subsequently removed from the mould. The plastic hose can be continually held on opposite sides of the blow mould arrangement during the entire extrusion and blow cycle.

Abstract: The present invention is directed to a blow-molding device in terms of the mounting of its blowing and calibrating mandrels. With exemplary embodiments, the effort and expense for dismantling or changing the position of the blowing mandrels can be simplified. The clamping force for the blowing mandrels can be easily adjustable. In an exemplary embodiment, the relative position in terms of height of the blowing mandrels is not impaired by the clamping.

Abstract: An exemplary extrusion head for producing a plastic strand in the form of a flexible or rigid tube can be made to communicate with the outlet of an extruder and has a nozzle tool, which includes a mandrel, or core, and a nozzle ring. The mandrel and the nozzle ring define an opening gap, whose opening width is variable by means of an axial relative motion (A, B) between the core and the nozzle ring that can be controlled via an electric or hydraulic actuating drive. The extrusion head includes a suspension element and an extrusion element, detachably connected to it, which has all the connections and flow channels for the composition to be extruded and is equipped with the nozzle tool. The actuating drive is disposed on the suspension element and can be connected detachably to the mandrel or to the nozzle ring.

Abstract: An apparatus for producing plastic hollow bodies using an extrusion blow molding process has an extrusion unit, which is mounted in a housing, and at least one blow molding station. The extrusion unit has an extruder and an extruder head, connected to the extruder, with at least one extrusion nozzle. The longitudinal extent of the extruder defines a longitudinal direction of the apparatus. The blow molding station has a blow molding table with at least one molding tool, which is provided with an opening disposed on the side of the molding tool toward the extrusion nozzle. The blow molding table is movable on a lateral path, extending essentially perpendicular to the longitudinal direction, from a terminal position laterally of the extruder head into a position beneath the extruder head and back again, in order to make the extrusion nozzle and the opening of the molding tool coincide vertically with one another.

Abstract: An apparatus for producing hollow bodies, in particular bottles and similar containers provided with an evacuation opening, of thermoplastic includes a lower machine part and a beamlike upper machine part. The lower machine part is equipped with at least two blow molds, each provided with a cavity. A number of blowing and calibration mandrels corresponding to the number of blow molds is disposed on the beamlike upper machine part disposed above the lower machine part. One blow mold is assigned to each blowing and calibration mandrel. The blowing and calibration mandrels can be axially fed jointly toward the blow molds and can be moved with their calibration region into an orifice of the cavity until an annular shoulder of the blowing and calibration mandrels comes into contact with a counterpart face on the associated blow mold. The blowing and calibration mandrels are retained axially freely movably, within predeterminable limits, in the upper machine part.

Abstract: An apparatus for producing plastic hollow bodies using an extrusion blow molding process has an extrusion unit, which is mounted in a housing, and at least one blow molding station. The extrusion unit has an extruder and an extruder head, connected to the extruder, with at least one extrusion nozzle. The longitudinal extent of the extruder defines a longitudinal direction of the apparatus. The blow molding station has a blow molding table with at least one molding tool, which is provided with an opening disposed on the side of the molding tool toward the extrusion nozzle. The blow molding table is movable on a lateral path, extending essentially perpendicular to the longitudinal direction, from a terminal position laterally of the extruder head into a position beneath the extruder head and back again, in order to make the extrusion nozzle and the opening of the molding tool coincide vertically with one another.

Abstract: An exemplary extrusion head for producing a plastic strand in the form of a flexible or rigid tube can be made to communicate with the outlet of an extruder and has a nozzle tool, which includes a mandrel, or core, and a nozzle ring. The mandrel and the nozzle ring define an opening gap, whose opening width is variable by means of an axial relative motion (A, B) between the core and the nozzle ring that can be controlled via an electric or hydraulic actuating drive. The extrusion head includes a suspension element and an extrusion element, detachably connected to it, which has all the connections and flow channels for the composition to be extruded and is equipped with the nozzle tool. The actuating drive is disposed on the suspension element and can be connected detachably to the mandrel or to the nozzle ring.

Abstract: Plastic snap-on hinged closures each having a bottom part and a cap that are attached to each other by a snap-on hinge tend to tear on the lateral borders. This is due to the geometry of closures having a round or oval shape when viewed from the top since only the flexibility of the outer walls have been used so far. This unresolved problem can be solved by a curvature with varying height and wall thickness extending along the joint. The curvature is elastic when pressure is exerted in the middle and when pulled from the sides.

Abstract: To provide hollow plastic bodies, e.g. bottles, with an inscription, a sheetlike object (23), e.g. a label, is pressed at least in part against an unfinished piece (26) while still being in deformable condition. This unfinished piece (26) is then brought, together with the preliminarily attached label into a blow mould (15). In blowing the bottle (26') the label (23) is strongly pressed against the bottle wall, because the label is held by the inner wall (31) of the blow mould.