| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a rigid vinyl chloride resin sheet, for a vacuum forming machine, which has a wide range of forming conditions for PTP packaging and is free from the generation of creases and a forming failure with minimum curl occurrence. <P>SOLUTION: This rigid vinyl chloride resin sheet used for a vacuum or pressure forming machine has a thickness of 0.1 to 0.5 mm and shows that the difference in degree of heat shrinkage: ¾degree of shrinkage A-degree of shrinkage B¾ in two directions angled at 45°with the flow direction of the sheet and orthogonal to each other within the temperature range of 120 to 145°C, is 0 to 2.5%. <P>COPYRIGHT: (C)2004,JPO</p> |
