Method of forming a container having an internal reservoir

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 81/26 (2006.01) B29C 51/08 (2006.01) B29C 69/00 (2006.01)

Patent

CA 2669319

A method of forming a container (100) includes heating two webs of material and indexing the webs into a vacuum thermoformer (40) which forms first (220) and second trays (110) simultaneously, wherein the second tray is disposed within a space of the first tray to define a reservoir (300) therebetween. A portion of the first tray is brought into contact with a flange portion of the second tray, and joined by a heat seal within the vacuum thermoformer. A punch device within the vacuum thermoformer perforates a drain aperture (117) in a central region of the bottom of the second tray, such that the drain aperture is in fluid communication with the reservoir. The cut-out section is adhered to the bottom of the first tray to eliminate the presence of any scrap material. The joined first and second tray is indexed out of the vacuum thermoformer and trimmed to separate an assembled container from the web supply.

La présente invention concerne un procédé de fabrication d'un conteneur (100) comprenant les étapes consistant à chauffer deux toiles de matériau et à indexer les toiles dans une unité de thermoformage sous vide (40) qui forme des premier (220) et second (110) plateaux simultanément, le second plateau étant disposé dans un espace du premier plateau de manière à définir un réservoir (300) entre ceux-ci. Une portion du premier plateau est amenée en contact avec une portion de bride du second plateau, et jointe à l'unité de thermoformage sous vide à l'aide d'un joint thermique. Un dispositif de perforation dans l'unité de thermoformage sous vide perfore une ouverture d'évacuation (117) dans une région centrale de la base du second plateau, de telle sorte que l'ouverture d'évacuation est en communication fluidique avec le réservoir. La section découpée est collée à la base du premier plateau de manière à éliminer la présence de tout déchet de matériau. Les premier et second plateaux joints sont indexés hors de l'unité de thermoformage sous vide et rognés pour séparer un conteneur assemblé de l'alimentation en toile.

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