B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 59/00 (2006.01) B26D 3/08 (2006.01) B26D 7/08 (2006.01) B31B 1/25 (2006.01) B65D 75/58 (2006.01) B65D 75/00 (2006.01) B65D 75/20 (2006.01) B65D 75/30 (2006.01)
Patent
CA 2489579
The device makes it possible to produce at least one scored line in at least one plastic outer layer of a film (10). It comprises a bearing surface for the film (10) and at least one projection (52a, 52b) for forming the scored line by penetration of the projection into the said plastic layer (12) when the film (10) is in position against the said bearing surface. The projections maybe arranged in the form of ribs on one or more coaxial rollers (51a, 51b). The projections may form the scored line by ultrasonic plastic flow, the film being compressed between a sonotrode and the rollers. The invention provides methods using these devices. It also provides films having scored lines, and packagings having scored lines.
Cette invention concerne un dispositif permettant de former au moins une rainure dans au moins une couche extérieure en plastique d'un film (10). Ce dispositif comporte une surface d'appui pour le film (10) et au moins une protubérance (52a, 52b) servant à former la rainure selon un procédé consistant à faire pénétrer la protubérance dans ladite couche (12) en plastique lorsque ledit film (10) se trouve contre la surface d'appui. Ces protubérances peuvent être disposées sous forme de nervures sur un ou plusieurs rouleaux coaxiaux (51a, 51b). Les protubérances peuvent former la rainure par un écoulement de plastique par ultrasons, le film étant compressé entre une sonotrode et les rouleaux. Cette invention concerne également des procédés d'utilisation de ces dispositifs, ainsi que des films et des emballages comportant des rainures.
Blanchard Daniel
Boutron Joel
Mars Incorporated
Perley-Robertson Hill & Mcdougall Llp
LandOfFree
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