METHOD OF MANUFACTURING STANDING BAG AND STANDING BAG

• Main Authors: MOCHIZUKI SHOTA, IGOTA MASAHARU, MORINAKA NAOKI
• Format: Patent
• Language: English
• Published: 09.02.2012
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; BABY COMFORTERS; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICALPURPOSES; CONVEYING; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; DEVICES FOR RECEIVING SPITTLE; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGINGPHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL ORADMINISTERING FORMS; HANDLING THIN OR FILAMENTARY MATERIAL; HUMAN NECESSITIES; HYGIENE; MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNERANALOGOUS TO PAPER; MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN AMANNER ANALOGOUS TO PAPER; MEDICAL OR VETERINARY SCIENCE; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; STORING; TRANSPORTING; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUSTO PAPER

PROBLEM TO BE SOLVED: To eliminate the possibility of contamination by bacteria and dust in the closed bag, in a self-supporting standing bag suitable for such applications as medical infusion bags.SOLUTION: There is provided a protruded portion at a position confronting the diameter circumferentially in the lip to form thin belt-like regions in a cylindrical sheet. A gusset portion is formed along the first thin belt-like region, and the surface opposite to the folding part of the gusset portion is fused to form the bottom W1 of a standing bag. The second thin belt-like region is divided in middle, and the divided parts each serve as an opening of the standing bag. When the standing bag is used as an infusion bag, a discharge port 90 is arranged in the opening. Even when the content is hardened by a heat treatment, e.g. sterilization after containment, appropriate flexibility of the bottom of the bag is ensured owing to thinning down, thereby ensuring a smooth collapse of the bag on discharge of the liquid.