GAS-PERMEABLE FILM

PURPOSE:To obtain the title film excellent in processability, moisture permeability, touch, appearance and mechanical strengths, by adding a filler to a PE composition comprising a linear low-density PE of specified properties, a linear low-density PE of a density higher than that of the former and/...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	NAKAE KIYOHIKO, KUME TAKANORI, KAWAKITA TOSHIO
Format:	Patent
Sprache:	eng
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 INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS 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:	PURPOSE:To obtain the title film excellent in processability, moisture permeability, touch, appearance and mechanical strengths, by adding a filler to a PE composition comprising a linear low-density PE of specified properties, a linear low-density PE of a density higher than that of the former and/or a high-density PE and a branched low-density PE. CONSTITUTION:40-90wt.% linear low-density PE (A) of a weight-average molecu lar chain length of 1,000-9,000Angstrom , a xylene-extractive component of 18-45wt.% (at 25 deg.C), a density of 0.870-0.915g/cm and an MFR of 0.1-30g/10min is mixed with 5-45wt.% linear low-density PE (B) of a density >=0.915g/cm and an MFR of 0.1-30g/10min and/or a high-density PE of a density >=0.950g/cm and an MFR of 0.1-30g/10min and 5-80wt.% branched low-density PE (C) of an MFR of 0.1-30g/10min and a die swell ratio of 1.2-1.6 to obtain a PE composition of a density of 0.900-0.920g/cm . 50-400pts.wt. filler (D) such as CaCO3, SiO, TiO2, zeolite, talc or a nylon powder is added to 100pts.wt. said PE composition.