Process for making water-soluble pouches

B - Operations – Transporting – 65 – B

Patent

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B65B 9/04 (2006.01) B65B 31/04 (2006.01)

Patent

CA 2501204

A vacuum-assisted process for making a fluid-containing water-soluble pouch comprising the steps of a) placing a first sheet of elastic film material over a horizontal mould comprising a cavity and a flange; b) drawing the film material into the cavity with vacuum assistance while maintaining the film under tension to form an open pouch; c) filling the open pouch; d) closing and sealing the open pouch with a second sheet of film material; e) releasing the vacuum applied to the pouch. The pouches obtained according to the process of the invention have a reduce air content. The use of the pouches containing detergent composition for laundry and dishwashing is also disclosed.

L'invention concerne un procédé assisté par application d'un vide qui permet de produire un sachet soluble dans l'eau contenant un fluide. Ce procédé comprend les étapes consistant: a) à placer une première feuille d'un matériau pelliculaire élastique sur un moule horizontal comprenant une cavité et une bride; b) à aspirer, par application d'un vide, le matériau pelliculaire dans la cavité tout en maintenant le film sous tension de manière à former un sachet ouvert; c) à remplir le sachet ouvert; d) à fermer et à sceller le sachet ouvert avec une deuxième feuille de matériau pelliculaire; e) et à libérer le vide appliqué sur le sachet. Les sachets obtenus selon le procédé de l'invention présentent une teneur réduite en air. L'invention concerne également l'utilisation desdits sachets contenant une composition détergente pour la lessive et la vaisselle.

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