Soft packaging sheet of low-sealing-opening easy-to-tear type liquid cheese and preparation method of soft packaging sheet

• Main Authors: CHEN ANKANG, YUAN CAIGEN, ZHU XIAOYANG, HOU SHENGWEI
• Format: Patent
• Language: Chinese; English
• Published: 30.04.2024
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; 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; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; STORING; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention belongs to the technical field of food packaging, and discloses a soft packaging sheet of low-unsealing and easy-to-tear liquid cheese and a preparation method of the soft packaging sheet. The invention relates to a soft packaging sheet for low-sealing easy-to-tear liquid cheese, which comprises a surface layer film, a surface layer film and a surface layer film, and the surface layer film is a thermoformable biaxially oriented polyethylene glycol terephthalate film and is a printing layer; the middle layer film is a multi-layer blown film or a casting polyethylene sheet and is a structural layer; and the inner layer film is a multi-layer blowing film or a casting polyethylene high-barrier film and is a heat sealing layer. A two-way stretching polyethylene terephthalate/polyethylene/polyethylene-ethylene and vinyl alcohol copolymer co-extrusion film material structure is adopted, the structure serves as a novel liquid cheese packaging structure, the characteristics of wide material modulus range