Polyvinyl alcohol film and method for producing polyvinyl alcohol film

Provided are: a PVA film which can be stretched at a high rate even at high temperatures; and a method for producing the PVA film. And a PVA film in which the melting end temperature is 93 DEG C or more and less than 96 DEG C when the heat flow of the PVA film is measured in the presence of water us...

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Bibliographische Detailangaben
Hauptverfasser:	ISOZAKI TAKANORI, KOBAYASHI SHINZO, KAZETO OSAMU
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING FREQUENCY-CHANGING GENERAL PROCESSES OF COMPOUNDING METALLURGY NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS ORGANIC MACROMOLECULAR COMPOUNDS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Beschreibung
Zusammenfassung:	Provided are: a PVA film which can be stretched at a high rate even at high temperatures; and a method for producing the PVA film. And a PVA film in which the melting end temperature is 93 DEG C or more and less than 96 DEG C when the heat flow of the PVA film is measured in the presence of water using a differential scanning calorimeter. 提供即使在高温下也能够以高倍率拉伸的PVA膜及该PVA膜的制造方法。PVA膜，其中，用差示扫描量热仪在水存在下测定PVA膜的热流时，熔融结束温度为93℃以上且小于96℃。