Process and device for making a corrugated sheet for containers

B - Operations – Transporting – 32 – B

Patent

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Details

B32B 29/08 (2006.01) B31F 1/28 (2006.01) B65D 65/40 (2006.01)

Patent

CA 2283774

The present invention relates to a method of forming a laminated material comprising the steps of corrugating a paper sheet (1), and applying a liner (4) to one or both sides of the corrugated sheet, wherein the liner is a pre- made laminate of a paper backing and plastic film which is metallised on one side and corona treated on the other side. A laminating apparatus for use in the above method is also described herein, which includes a means for feeding out a paper sheet and a liner to a set of corrugating rollers (6), the liner being a pre-formed laminate of paper and plastics film, and means for uniting the paper sheet and liner immediately subsequently to the corrugation of the paper sheet.

La présente invention concerne un procédé de formation d'un matériau stratifié, comprenant les étapes consistant à onduler une feuille de papier (1), à appliquer une doublure (4) sur un ou sur les deux côtés de la feuille ondulée, la doublure étant un stratifié préformé constitué d'un support de papier et d'un film plastique métallisé sur un côté et traité par effet corona sur l'autre côté. L'invention concerne également un appareil de stratification utile dans le procédé ci-dessus, lequel appareil comporte des moyens d'alimentation d'une feuille de papier et d'une doublure en direction de rouleaux d'ondulation (6), la doublure étant constituée d'un stratifié préformé de papier et de film plastique, ainsi que des moyens pour unir la feuille de papier et la doublure, immédiatement après l'étape d'ondulation de la feuille de papier.

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