| 摘要 |
PURPOSE:To obtain low temperature heat-shrinkable film by stretching straight chain low density polyethylene resin film having short chain branches with a density 0,935g/cm<3> max. melt index 0.3-8g/10min by 3.0-6.0 times between two rolls having specific diameters and a specific air gap. CONSTITUTION:Film composed of straight chain low density polyethylene resin having short chain branches with a density 0.935g/cm<3> min. and a melt index 0.3-8g/10min is stretched between two rolls with a diameter 200m/m, at an air gap 10m/m max. into a stretching magnification of 3.0-6.0. In this manner, it is possible to prepare low temperature heat-shrinkable film excellent in transparency, free from stretching irregularity, uniform in film thickness and prominent in strength. |
