B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 27/08 (2006.01) B65D 65/40 (2006.01)
Patent
CA 2160694
The present invention concerns a multilayered polymer film structure, which comprises at least one first layer (1) containing a thermoplastic polymer and at least one second layer (2), arranged adjacent to said first layer, containing a liquid crystalline polymer. According to the invention, the second layer (2) consists essentially of a compounded polymer blend formed by the liquid crystalline polymer and a thermoplastic polymer, the liquid crystalline polymer of the second layer forms a continuous phase, and the first and the second layers (1, 2) contain the same thermoplastic polymer. The oxygen transmission rate of the second layer is less than about 150 cm3/(m2.d.bar), determined according to the standard ASTM D 3985 - 81, and the water vapour transmission rate of the integral film structure is less than 10 g/(m2.24.h) at RH 80 % 23 ~C, determined according to ASTM F 1249 - 90. The present structure can be used as a barrier layer in packages.
Structure en feuille polymère multicouche comportant au moins une première couche (1) renfermant un polymère thermoplastique et au moins une seconde couche (2), contiguë à la première, renfermant un polymère cristallin liquide. Ladite seconde couche (2) est essentiellement constituée d'un mélange composite de polymères constitué du polymère cristallin liquide et d'un polymère thermoplastique, le polymère cristallin liquide de la seconde couche formant une phase continue, et les première et seconde couches (1, 2) renferment le même polymère thermoplastique. Le taux de transmission d'oxygène de la seconde couche est inférieur à 150 cm?3¿/(m?2¿.d.bar), selon la norme ASTM D 3985 - 81, et le taux de transmission de vapeur d'eau de la structure en feuille monobloc est inférieur à 10g/(m?2¿.24.h) pour une humidité relative de 80 % à 23 ~C, selon la norme ASTM F 1249 - 90. Cette structure est utilisable comme couche barrière dans les emballages.
Harkonen Mika
Holsti-Miettinen Riitta
Kuusela Seppo
Laiho Erkki
Ora Marja
Harkonen Mika
Holsti-Miettinen Riitta
Kuusela Seppo
Laiho Erkki
Neste Oy
LandOfFree
Multilayered polymer films and process for the preparation... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multilayered polymer films and process for the preparation..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multilayered polymer films and process for the preparation... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1953337