Process and apparatus for filling and sealing a container, and a container made thereby
OwnerGerhard Hansen, deceased, by Heidrun Hansen, legal representativeinventors
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Abstract
To minimize the air volume present in a container following heat sealing, the dimensions of the flowthrough passage of the filling connection are decreased in a first heat sealing operation. Then, the container is elastically deformed by a punch to such an extent that the liquid content level rises up inside the filling connection. Finally, in a second heat sealing operation, the end segment of the now funnel-shaped flowthrough passage of the filling connection is heat sealed such that it is totally sealed without pores.
Claims5
A process for filling and sealing an at least partially elastically deformable container of heat sealable material, comprising the steps of:
- filling an elastically deformable container through an open end thereof to a first level of contents;
- in a first heat sealing step, forming a filling connection at the container open end having a flow passage with transverse cross-sectional dimensions smaller than a body portion of the container by pressing flat and heat sealing a border zone of the container open end after filling, the passage remaining open at a distal end thereof;
- in a second heat sealing step, closing and sealing the distal end of the passage;
- and
- between the first and second heat sealing steps, raising the contents to a higher, second level inside the filling connection of the container by elastically deforming the container.
Dependencies are inferred from the claim text.