Packaging
AssigneeUnifill S.P.A.
InventorsRoberto Tabaroni, Andrea Bartoli
Life of this patent
Estimating the term…
Abstract
A container or group of containers formed in thermoformable and heat-weldable material and including an inlet having inlet wall portions which are elastic so that the inlet is self-closing prior to permanent sealing. A blow-molding system for the manufacture of such containers or group of containers includes a forming station for forming a group of containers with respective inlets or a group of containers with a common inlet. A filling station is located downstream of the forming station.
Claims32
A packaging method comprising the steps of (a) providing a container including an inlet, or a group of containers including a common inlet, inlet wall portions which are disposed opposite each other and which are elastic so that the inlet is self-closing, (b) injecting product into the interior(s) of the container(s) through the inlet while said inlet wall portions are elastically pushed apart, and (c) following filling of the container(s), allowing said inlet wall portions to come together elastically to close said inlet.
Packaging apparatus for use in filling of a container or a group of containers including inlet wall portions which are elastic so that an inlet or the container or group is self-closing, said packaging apparatus comprising product-injecting means insertable between said inlet wall portions to push said inlet wall portions apart elastically, serving to inject a product into the interior(s) of the container(s) and retractable from between said inlet wall portions to allow said inlet wall portions to come together to close said inlet, and forming means which serves to heat-weld a pair of webs of thermoplastic material together around an outline of said container, or around respective outlines of the containers of said group, and to thermo-form said webs to provide walls of said container or of said containers of said group, and to shape said inlet wall portions.
A container, or a group of containers, having an inlet comprising inlet wall portions which are disposed opposite each other and which are elastic so that the inlet is self-closing, the arrangement being such that injecting means is insertable between said inlet wall portions to push said inlet wall portions apart elastically.
Dependencies are inferred from the claim text.