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公开(公告)号：US07829655B2
公开(公告)日：2010-11-09
申请号：US12304531
申请日：2007-06-13
申请人： Takurou Endo , Masayuki Haruta , Norimi Tabota , Katsuhiko Nose
发明人： Takurou Endo , Masayuki Haruta , Norimi Tabota , Katsuhiko Nose
CPC分类号： B29C55/146 , B29C61/003 , B29C61/06 , B29K2067/00 , B29K2995/0049 , C08J5/18 , C08J2367/02 , Y10T428/1328 , Y10T428/31786
摘要： In the heat-shrinkable polyester film of the present invention, the main shrinkage direction is the longitudinal direction. In addition, the hot-water heat shrinkage ratios in the longitudinal direction and the width direction when the film is treated in hot water at 90° C. for 10 seconds, the refractive indexes in the longitudinal direction and the width direction and the natural shrinkage ratio after aging at 40° C. and 65% RH for 700 hours or more are each controlled in predetermined ranges. The heat-shrinkable polyester film of the present invention is manufactured by stretching an unstretched film at a ratio of 2.5 times or more and 6.0 times or less in the width direction at a temperature of Tg+5° C. or more and Tg+40° C. or less, passing the film in an intermediate zone that does not execute an active heating operation, heat-treating the film at a temperature of 100° C. or more and 170° C. or less over a period of 1.0 second or more and 10.0 seconds or less, cooling the film to a surface temperature of 30° C. or more and 70° C. or less, stretching the film at a ratio of 2.0 times or more and 7 times or less in the longitudinal direction at a temperature of Tg+5° C. or more and Tg+80° C. or less, and subsequently cooling the film at a cooling rate of 30° C./second or more and 70° C./second or less to a surface temperature of the film of 45° C. or more and 75° C. or less.
摘要翻译： 在本发明的热收缩性聚酯膜中，主收缩方向为长度方向。 此外，当在90℃的热水中将膜处理10秒钟时，长度方向和宽度方向上的热水热收缩率，纵向和宽度方向上的折射率以及自然收缩率 在40℃和65％RH下老化700小时以上的比例分别控制在预定范围内。 本发明的热收缩性聚酯膜通过在Tg + 5℃以上的温度下在宽度方向上以2.5倍以上6.0倍以下的比例拉伸未拉伸膜而制造，Tg + 40 ℃以下，使膜处于不进行主动加热操作的中间区域，在1.0秒以上且170℃以下的温度下进行1.0秒钟的热处理 以上且10.0秒以下，将该膜冷却至30℃以上且70℃以下的表面温度，在长度方向上以2.0倍以上7倍以下的比例进行拉伸 在Tg + 5℃以上且Tg + 80℃以下的温度下，然后以30℃/秒以上且70℃/秒以下的冷却速度将膜冷却至 该膜的表面温度为45℃以上且75℃以下。
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公开(公告)号：US20090270584A1
公开(公告)日：2009-10-29
申请号：US12304531
申请日：2007-06-13
申请人： Takurou Endo , Masayuki Haruta , Norimi Tabota , Katsuhiko Nose
发明人： Takurou Endo , Masayuki Haruta , Norimi Tabota , Katsuhiko Nose
CPC分类号： B29C55/146 , B29C61/003 , B29C61/06 , B29K2067/00 , B29K2995/0049 , C08J5/18 , C08J2367/02 , Y10T428/1328 , Y10T428/31786
摘要： In the heat-shrinkable polyester film of the present invention, the main shrinkage direction is the longitudinal direction. In addition, the hot-water heat shrinkage ratios in the longitudinal direction and the width direction when the film is treated in hot water at 90° C. for 10 seconds, the refractive indexes in the longitudinal direction and the width direction and the natural shrinkage ratio after aging at 40° C. and 65% RH for 700 hours or more are each controlled in predetermined ranges. The heat-shrinkable polyester film of the present invention is manufactured by stretching an unstretched film at a ratio of 2.5 times or more and 6.0 times or less in the width direction at a temperature of Tg+5° C. or more and Tg+40° C. or less, passing the film in an intermediate zone that does not execute an active heating operation, heat-treating the film at a temperature of 100° C. or more and 170° C. or less over a period of 1.0 second or more and 10.0 seconds or less, cooling the film to a surface temperature of 30° C. or more and 70° C. or less, stretching the film at a ratio of 2.0 times or more and 7 times or less in the longitudinal direction at a temperature of Tg+5° C. or more and Tg+80° C. or less, and subsequently cooling the film at a cooling rate of 30° C./second or more and 70° C./second or less to a surface temperature of the film of 45° C. or more and 75° C. or less.
摘要翻译： 在本发明的热收缩性聚酯膜中，主收缩方向为长度方向。 此外，当在90℃的热水中将膜处理10秒钟时，长度方向和宽度方向上的热水热收缩率，纵向和宽度方向上的折射率以及自然收缩率 在40℃和65％RH下老化700小时以上的比例分别控制在预定范围内。 本发明的热收缩性聚酯膜通过在Tg + 5℃以上的温度下在宽度方向上以2.5倍以上6.0倍以下的比例拉伸未拉伸膜而制造，Tg + 40 ℃以下，使膜处于不进行主动加热操作的中间区域，在1.0秒以上且170℃以下的温度下进行1.0秒钟的热处理 以上且10.0秒以下，将该膜冷却至30℃以上且70℃以下的表面温度，在长度方向上以2.0倍以上7倍以下的比例进行拉伸 在Tg + 5℃以上且Tg + 80℃以下的温度下，然后以30℃/秒以上且70℃/秒以下的冷却速度将膜冷却至 该膜的表面温度为45℃以上且75℃以下。
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