Method and device for producing filled containers

Patent metadata

Field	Value
Publication number	US-9498913-B2
Application number	US-201013518462-A
Country	US
Kind code	B2
Filing date	Dec 7, 2010
Priority date	Dec 23, 2009
Publication date	Nov 22, 2016
Grant date	Nov 22, 2016

Abstract

The method and the device are used to produce filled containers. A preform ( 2 ) made of a thermoplastic material is first subjected to thermal conditioning in the area of a heating section along a transport path. Then the preform ( 2 ) is shaped into the container ( 11 ) inside a mold by applying pressure. A filling medium ( 21 ) with which the container is to be filled is used as the fluid for forming the container. The preform ( 2 ) is guided at least intermittently while the preform is shaped into the container ( 11 ).

First claim

The invention claimed is:

1. A method for manufacturing filled containers, comprising the steps of: thermal conditioning a preform of a thermoplastic material along a transport path in an area of a heating section; deforming said preform, within a mold, into a container by pressure application in the container, using a filling medium to be filled into the container as fluid for the container deformation; and guiding the preform with a stretch rod during deformation into the container, wherein an acting stretching force of the stretch rod acting on the preform is measured and a volumetric flow of the filling medium is controlled depending on the measured stretching force so that a minimum stretching force is always maintained.

2. The method according to claim 1 , including supplying the filling medium at least partially through the stretching rod.

3. The method according to claim 1 , including supplying the filling medium at least partially past the stretching rod.

4. The method according to claim 1 , including supplying the filling medium at least temporarily with a constant volumetric flow.

5. The method according to claim 1 , including supplying the filling medium at least temporarily with a variable volumetric flow.

6. The method according to claim 1 , including shaping, filling and closing the container on a rotating process wheel.

7. A device for manufacturing filled containers of a thermoplastic material, comprising: at least one heating section arranged along a transport path of a preform; and a molding station provided with a mold, wherein the molding station includes a feeding device for a filling medium to be filled into the container for deforming the preform into the container, and a stretch rod as a guiding device for at least temporarily acting on the preform during deformation, wherein the guiding device exerts a measurable stretching force on the preform, and volumetric flow of the filling medium is controllable depending on the measurable stretching force so that the guiding device always exerts a minimum stretching force on the preform.

8. The method according to claim 1 , wherein the stretch rod is driven electrically and the acting stretching force is measured by measuring drive current.

9. The method according to claim 1 , wherein the stretch rod is driven pneumatically and the acting stretching force is measured by a pressure measurement.

Assignees

• Haesendonckx Frank
• Klatt Dieter
• Von Hamme Thomas
• Baumgarte Rolf
• Rieger Harald
• Wilhelm Lothar
• Stolte Thomas
• Khs Gmbh
• Khs Corpoplast Gmbh

Inventors

• Haesendonckx Frank
• Klatt Dieter
• Von Hamme Thomas
• Baumgarte Rolf
• Rieger Harald
• Wilhelm Lothar
• Stolte Thomas

Classifications

• B29C2049/7879

  Stretching, e.g. stretch rod · CPC title

• B29C49/12

  Stretching rods · CPC title

• B29C49/46 Primary

  characterised by using particular environment or blow fluids other than air · CPC title

• B29C2049/465

  being incompressible · CPC title

• B29C2049/1238

  Operations & Transport · mapped topic