PRODUCTION OF FILM FOR TYPING RIBBON

PURPOSE:To obtain a film for a typing ribbon, which is excellent in slittability, printability and ink coatability, by a method wherein a polyethylene resin having a specified density is melted, is formed into a film, and the film is stretched to a specified draw ratio. CONSTITUTION:A polyethylene r...

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Bibliographische Detailangaben
Hauptverfasser:	IZEKI TSUTOMU, ITOU KEIKO, ISHII TOSHIYUKI, SANO TEIICHI, ITOU MICHIYASU
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING COLOUR PRINTING CORRECTION OF TYPOGRAPHICAL ERRORS i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS LINING MACHINES PERFORMING OPERATIONS PRINTING PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES SELECTIVE PRINTING MECHANISMS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS STAMPS TRANSPORTING TYPEWRITERS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain a film for a typing ribbon, which is excellent in slittability, printability and ink coatability, by a method wherein a polyethylene resin having a specified density is melted, is formed into a film, and the film is stretched to a specified draw ratio. CONSTITUTION:A polyethylene resin having a density of not lower than 0.94 is melted, is formed into a film, and the film is stretched at least uniaxially at a draw ratio of 1.1-3.5, preferably, 1.5-2.5 to obtain the desired film for a typing ribbon.