B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
B65D 81/18 (2006.01) A23B 7/148 (2006.01) A23L 3/3418 (2006.01) B29D 22/00 (2006.01) B29D 23/00 (2006.01) B32B 1/08 (2006.01) B32B 3/10 (2006.01) B32B 27/00 (2006.01) B32B 27/08 (2006.01) B32B 27/32 (2006.01) B65D 81/20 (2006.01) B65D 81/24 (2006.01) B65D 85/34 (2006.01) C01B 3/00 (2006.01) C01B 6/00 (2006.01) C01B 13/02 (2006.01) C02F 1/70 (2006.01) C06B 23/00 (2006.01) C06B 43/00 (2006.01) C09K 3/00 (2006.01)
Patent
CA 2367751
A coated membrane for use in controlling the oxygen and carbon dioxide ratio inside of a package that holds respiring produce such as fruits, vegetables or flowers. The coated membrane comprises a porous substrate, such as a polypropylene film, and has an oxygen permeance in the range of 5,000 to 30,000,000 cc/100 in2- atmosphere-day. The substrate is coated with a material that is substantially impermeable to oxygen, such as an acrylic emulsion, so that the amount of substrate surface area covered with the coating causes a decrease in the oxygen permeance of the substrate. The coating is applied to the substrate using a flexographic or rotogravure or rotary silkscreen process. An aperture of approximately 0.15 mm is placed in the coated membrane to allow the internal pressure to approximate the external pressure without a significant loss of relative humidity.
L'invention porte sur une membrane enrobée destinée à être utilisée dans la régulation du rapport oxygène/carbone à l'intérieur d'un conditionnement et à faciliter la respiration de produits tels que fruits, légumes ou fleurs. La membrane enrobée comprend un susbtrat poreux tel qu'un film de polypropylène et a une perméabilité à l'oxygène comprise entre 5.000 et 30.000.000 cc/100 in<2>/atmosphère/jour. Le substrat est recouvert d'un matériau pratiquement imperméable à l'oxygène tel qu'une émulsion acrylique de sorte que la superficie du substrat recouverte du revêtement réduise la perméabilité à l'oxygène. Le revêtement est appliqué sur le substrat à l'aide d'un processus flexographique ou de rotogravure ou d'un processus utilisant un écran sérigraphique rotatif. Une ouverture d'environ 0,15 mm est pratiquée dans la membrane enrobée de façon à permettre à la pression interne d'approcher la pression externe sans perte importante d'humidité relative.
River Ranch Fresh Foods Llc
River Ranch Fresh Foods - Salinas Inc.
Smart & Biggar
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