POLYESTER RESIN COMPOSITION, FILM OBTAINED BY MOLDING RESIN COMPOSITION AND BAG OBTAINED BY MOLDING FILM

• Main Author: KUSUNO ATSUSHI
• Format: Patent
• Language: English
• Published: 28.08.2014
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; 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 TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HANDLING THIN OR FILAMENTARY MATERIAL; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; STORING; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

PROBLEM TO BE SOLVED: To obtain a film having good moldability, good openability when molded into a bag, good appearance and excellent tear strength and impact strength.SOLUTION: There is provided a polyester resin composition which comprises: an aliphatic-aromatic polyester (A) having a structural unit derived from succinic acid and a structural unit derived from an aromatic dicarboxylic acid; and an aliphatic polyester (B) mainly composed of a structural unit derived from an oxycarboxylic acid, in which the content of the aliphatic polyester (B) is 5 mass% or more and less than 60 mass%.