B - Operations – Transporting – 65 – B
Patent
B - Operations, Transporting
65
B
B65B 31/06 (2006.01) B65B 9/10 (2006.01) B65B 9/12 (2006.01) B65B 51/30 (2006.01)
Patent
CA 2656251
A process for forming a pouch having an evacuated headspace containing a flowable material is disclosed. The process includes the steps of: providing a continuous tube of flexible and sealable film; supplying the continuous tube with a predetermined amount of flowable material; pinching the continuous tube above a sealing region so as to form a pinched portion of the continuous tube; evacuating the headspace between the pinched portion and the predetermined amount of flowable material; and sealing the continuous tube at the sealing region to form a top seal of a previously formed pouch containing flowable material and a bottom seal of a next-to-be filled pouch. Also disclosed is a vertical form-fill-seal apparatus for forming a pouch containing a flowable material and having an evacuated headspace.
L'invention concerne un processus de formation d'une poche présentant un espace de tête sous vide et contenant un matériau fluide. Le processus comporte les étapes consistant à : mettre en place un tube continu en film souple et susceptible d'être scellé ; alimenter le tube continu avec une quantité prédéterminée de matériau fluide; pincer le tube continu au-dessus d'une région de scellage de manière à former une partie pincée du tube continu ; établir un vide dans l'espace de tête entre la partie pincée et la quantité prédéterminée de matériau fluide ; et sceller le tube continu au niveau de la région de scellage afin de former un scellé supérieur d'une poche formée précédemment et contenant du matériau fluide et un scellé inférieur d'une prochaine poche à remplir. L'invention concerne également un appareil vertical de formage-remplissage-scellage destiné à former une poche contenant un matériau fluide et présentant un espace de tête sous vide.
Fergusson Stuart
Godfroy Larin
Reid Tony
Sadler Jim
Schiele David L.
Liqui-Box Canada Inc.
Torys Llp
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