B - Operations – Transporting – 31 – B
Patent
B - Operations, Transporting
31
B
B31B 1/25 (2006.01) B65D 5/42 (2006.01)
Patent
CA 2374785
A method of creasing a packaging laminate manufactured from cellulose fibres, which packaging laminate comprises a bulk promoting layer (1), here denoted bulk layer, which consists of a network structure of cellulose fibers, and on at least one side of the bulk layer at least one side layer (2b), the side layer and bulk layer being directly or indirectly joined to each other over essentially their entire surfaces facing each other. In the method a creasing device is pressed down, in a first side of the laminate, for the formation of a crease line (4), while, on the other side of the laminate, which is opposite to said first side, a holding-on tool is used, which holding-on tool is essentially planar in an area corresponding to the location of the creasing device. The invention also relates to a packaging laminate provided with a crease line, and packaging which has been formed by the folding of such a packaging laminate.
L'invention concerne un procédé de rainurage d'un stratifié d'emballage fabriqué à partir de fibres de cellulose et comprenant une couche conférant du bouffant (1) -désignée ci-après couche bouffante- se composant d'une structure en réseau de fibres de cellulose et sur un côté de laquelle au moins est appliquée une couche superficielle (2b), cette dernière couche et la couche bouffante étant directement ou indirectement assemblées entre elles, sur pratiquement tout leur surface située l'une face à l'autre. Ce procédé consiste à presser vers le bas un dispositif de rainurage, sur un premier côté du stratifié, afin de former une ligne de rainurage (4), tandis que l'on utilise, sur l'autre côté du stratifié opposé au premier, un outil de maintien essentiellement plat sur sa surface qui correspond à l'emplacement du dispositif de rainurage. L'invention concerne également un stratifié d'emballage doté d'une ligne de rainurage, ainsi qu'un emballage formé par le pliage d'un tel stratifié d'emballage.
Fredlund Mats
Karlsson Annika
Norlander Leif
Borden Ladner Gervais Llp
Stora Enso Aktiebolag
Stora Kopparbergs Bergslags Aktiebolag
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