US 4,054,017 AGranted

Apparatus for production of a bottle-shaped container, filled, sealed and ready for shipment

AssigneePMD Entwicklungswerk fur Kunststoff-Maschinen GmbH & Co. KG

InventorWilhelm Naumann

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Abstract

An apparatus for producing a bottle-shaped container, filled, sealed and dy for shipment, which comprises the steps of inserting a section of a thermoplastic synthetic tube into a divided blow mold with individually adjustable crown mold halves. The bottom part of the tube is then closed. Blow-molding, filling and sealing steps of the tube are performed in the mold in its still locked state to form the container. The crown mold halves are thereafter closed airtight at the head end by joining together after insertion of a tube section to be widened into the blow mold by applying a pressure medium. At least a section of the wall of the container is subjected by engagement to an outer pressure and pressed in the wall into the inner space of the container. By the excess pressure developed thereby in the inner space of the container, the wall of the head of the container is pressed against the wall of the mold of crown mold halves. This is a division of application Ser. No. 409,714 filed Oct. 25, 1973 , now U.S. Pat. No. 3,911,071.

Claims2

Dependent claims

An apparatus for producing a bottle-shaped container package, filled, sealed and ready for shipment, comprising:

a blow mold formed with a pair of mold halves and defining a bottle-shaped mold cavity in a closed position of said mold halves, said cavity having a bottom and a neck;
means for introducing a flexible-wall parison between said mold halves whereby closure of said mold halves encloses said parison in said mold cavity and seals said parison at said bottom of said cavity;
means for blowing said parison through said neck with a blowing gas to expand said parison to the shape of said cavity thereby forming said parison into a bottle-shaped container in said cavity;
a distribution chamber formed in said blow mold beneath said bottom;
a plurality of channels formed in said blow mold and extending upwardly from said chamber to said bottom of said cavity and communicating between said chamber and said cavity;
a hose connected to said distribution chamber for supplying a pressure medium thereto to cause said pressure medium to traverse said channels and enter said mold cavity between a wall of said mold cavity and a wall of said container, thereby deforming said wall of said container inwardly to express blowing gas from said container, said channels being distributed uniformly around said bottom of said mold cavity along the periphery thereof;
means for filling said container through said neck with a liquid and pressing said wall of said container outwardly during the filling thereof;
and
means for sealing said container at said neck.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 05/572,334Filed 28 Apr 1975 · division
Priority: DT 225688420 Nov 1972
Granted: 18 Oct 1977
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

B29C 49/4817
With means for locally compressing part of the parison in the main blowing cavity: with means for closing off parison ends
B29C 49/04
Combined blow-moulding and manufacture of the preform or the parison: extrusion blow-moulding
B29C 49/80
Measuring, controlling or regulating: testing, e.g. for leaks
B65B 3/022
Machines characterised by the incorporation of means for making the containers or receptacles: making containers by moulding of a thermoplastic…