OPEN DRUM INTERNAL BAG FOR LIQUID TRANSPORTATION

• Main Authors: SHIRAHASE TORU, FUJITA HIDEKATSU
• Format: Patent
• Language: English
• Published: 16.09.2003
• Edition: 7
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; 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; GENERAL PROCESSES OF COMPOUNDING; HANDLING THIN OR FILAMENTARY MATERIAL; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; STORING; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING-UP

PROBLEM TO BE SOLVED: To provide an open drum internal bag which has a high impact strength, a superior elasticity and pinhole resistance, and an excellent operability (binding property). SOLUTION: The open drum internal bag for liquid transportation is formed with a film made of a resin compound containing ethylene-α-olefin copolymers (A), (B), which are described below, at a weight ratio: (A):(B)=30:70 to 70:30. The ethylene-α-olefin copolymer (A) has a melt flow rate of 0.5 to 10 g/10 min, and a density of 0.900 g/cm3or more to less than 0.905 g /cm3. The ethylene-α-olefin copolymer (B) has a melt flow rate of 0.5 to 10 g/10 min, and a density of 0.870 g/cm3or more to less than 0.900 g/cm3. It is desirable to obtain the ethylene-α-olefin copolymer (A) by using a metallocene polymerization catalyst. COPYRIGHT: (C)2003,JPO