Cast film with high barrier property

• Main Author: LIN FULIANG
• Format: Patent
• Language: Chinese; English
• Published: 22.02.2017
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention discloses a cast film with a high barrier property. PP plastic particles and PET plastic particles are added into a co-extruding film casting machine to prepare a PET/PP film containing a PET layer and a PP layer. The PP plastic particles are prepared through blending modification, and N,N'-(4,4'-methylene diphenyl)bismaleimide, trimethylolpropane trimethacrylate and 4,4'-dihydroxy diphenyl sulfide are added to improve the barrier property of the cast film. The PET plastic particles are modified through a synthetic modification method, and comprise 2-nitroterephthalic acid-4-methyl ester, maleic anhydride, 2-methyl-2,4-pentanediol, 2,3-diobromoethane-1,4-glycol, tetrabromo terephthalic acid, bis(2-ethyl hexyl)terephthalic acid, 4-phthalic anhydride, 2-amino terephthalic acid, 10 parts of 2,2-diemthyl-1,3-propylene glycol, 2,2-difluoro-1,3-benzodioxole, magnesium fluosilicate and antibacterial agent with terephthalic acid and ethylene glycol being base materials. Through complementation of the tw