NONORIENTED POLYPROPYLENE FILM

FIELD: polymer production. ^ SUBSTANCE: invention provides manufacture of nonoriented polypropylene film exhibiting good mechanical properties, workability, and enhanced water steam non-penetrability. Film is manufactured from polypropylene, which could be either propylene homopolymer and/or statist...

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Bibliographische Detailangaben
Hauptverfasser:	KIRKHBERGER MANFRED, GALJAJTNER MARKUS, JASKELJAJNEN PIR'O
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 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 LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS STORING THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	FIELD: polymer production. ^ SUBSTANCE: invention provides manufacture of nonoriented polypropylene film exhibiting good mechanical properties, workability, and enhanced water steam non-penetrability. Film is manufactured from polypropylene, which could be either propylene homopolymer and/or statistic propylene copolymer containing up to 1.5 wt % one or several C4-C8-alpha-olefins and/or ethylene, wherein polypropylene is characterized by degree of isotacticity >=0.96 (as measured according to IR spectroscopy with Fourier transformation technique and calculated from peak ratio A998/A973), crystallization temperature Tc >= 120 (as measured by differential scanning spectroscopy technique in compliance to ISO 3146), and viscosity decrease index under shear-Hall instability SHI (0/50) >= 10 (calculated from rheological curve at 200 ). Film of invention manifests reduced water steam passage velocities and can be used for food and non-food product packagings. ^ EFFECT: improved performance characteristics of film. ^ 21 cl, 1 tbl, 5 ex