PACKAGING MATERIAL FOR RETAINING FRESHNESS, PRODUCTION AND PACKAGING THEREOF

• Main Authors: NAKAJIMA TSUTOMU, UCHIDA SATORU, OBA TOSHIO, SAITO SHIGE, YAMAMOTO AKIRA
• Format: Patent
• Language: English
• Published: 15.08.1995
• Edition: 6
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; CHEMISTRY; 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; HANDLING THIN OR FILAMENTARY MATERIAL; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; STORING; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

PURPOSE:To stably retain the freshness of vegetables and fruits, a spray with flowers, etc., for a long period of time by using the packaging material having the silicone elastomer film containing a hydrosilyl group containing compound and a hydrosilylation catalyst. CONSTITUTION:A hydrosilyl group containing compound and a hydrosilylation catalyst are added to silicone rubber composition and, as required, calcium carbonate, talc, hormite, etc., are further added thereto formation into a film-like state or the composition is rendered into a hard state by the lamination thereof on other base material. In this case, a packaging material is produced by a method wherein, at the time of producing a silicone elastomer film by subjecting alkenyl group-containing organopolysiloxane and organohydropolysiloxane to hydrosilylation reaction in the presence of a hydrosilylation catalyst, the SiH group of the alkenyl group-containing organopolysiloxane is used in an amount of at least 5 times in a molar ratio and organohydrodienepolysiloxane and the hydrosilylation catalyst are allowed to remain in the silicone elastomer film.