| 摘要 |
PURPOSE:To obtain the thin film for preventing adhesion which has the good adhesive property to an original film and is not affected with humidity by incorporating a prescribed ratio of polyvinyl alcohol (PVA) and glycerol into this thin film. CONSTITUTION:The PVA and >=4 to <8wt.% glycerol of the weight of the total compsn. are incorporated into this compsn. The PVA having >=97% and more particularly >=98% hydrolysis rate is more preferable. The content of the glycerol to be incorporated is specified to the >=4 to <8wt.% range, more preferably >=5 to <8wt.% range of the weight of the compsn. for the adhesion preventive layer. This compsn. is used as the adhesion preventive layer of a photosensitive resin laminate for flexographic printing. The compsn. for the adhesion preventive layer consisting of such constitution has improved flexibility and simultaneously the desired peeling strength is developed; further, the influence by the humidity is not received at all. |
