GAS-PERMEABLE MEMBRANE

PROBLEM TO BE SOLVED: To provide a novel gas-permeable membrane which is particularly useful in packaging of fresh cut fruit, vegetables and other respiring biological materials. SOLUTION: The membrane has an O2permeability of at least 775,000 mL/m2. atm. 24 hrs, a P10ratio of at least 1.3 and a rat...

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Bibliographische Detailangaben
Hauptverfasser:	YOON VALENTINE Y, SCHULTZ DONALD, CLARK RAYMOND, MCCLARY BRADLEY, STEWART RAY F
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR ADHESIVES AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING CORRECTING FLUIDS DYES FILLING PASTES GENERAL PROCESSES OF COMPOUNDING HANDLING THIN OR FILAMENTARY MATERIAL INKS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PACKAGES PACKAGING ELEMENTS PACKING PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES STORING THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS WORKING-UP
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a novel gas-permeable membrane which is particularly useful in packaging of fresh cut fruit, vegetables and other respiring biological materials. SOLUTION: The membrane has an O2permeability of at least 775,000 mL/m2. atm. 24 hrs, a P10ratio of at least 1.3 and a ratio (R) of CO2permeability to O2permeability of at least 1.5 and is made by forming a thin polymeric coating on a microporous polymeric film. A preferred coating polymer is a side-chain crystalline polymer. A preferred microporous film contains an inorganic filler. Particularly, the film is based on an ultra-high-molecular-weight polyethylene or polypropylene. COPYRIGHT: (C)2007,JPO&INPIT