爽滑母料在烟包薄膜专用BOPP中的应用

Application of slip master-batch used in BOPP for cigarette package

采用高黏度二甲基硅油与蜡按质量比为1.5∶1.0复配成爽滑母料,并在烟包薄膜专用双向拉伸聚丙烯(BOPP)上应用。结果表明:将质量分数为10%的爽滑母料添加到表层材料制成的烟包薄膜专用BOPP,其动摩擦因数在常温条件下控制在0.25~0.26,温度为50℃时控制在0.35之内,完全能满足烟包薄膜专用BOPP的爽滑性能;其雾度小于1.5%,光泽度大于90.0%,并在30d内薄膜雾度上升0.1%,光泽度下降0.9%,具有高光泽、低雾度,并且时效性稳定等特点;自制爽滑母料在烟包薄膜摩擦因数和光学性能上优于参比试样,其他力学性能差异不大;自制爽滑母料的使用性能超过参比试样。

High viscosity dimethyl silicon oil and wax were combined in a mass ratio of 1.5∶1.0 to make slip master-batch,which was applied for biaxial oriented polypropylene(BOPP) for cigarette package film. The results show that the dynamic friction coefficient of the BOPP film in which the mass fraction of master batch is 10% is controlled between 0.25 and 0.26 at room temperature and within 0.35 at 50 ℃,meeting the slip property of BOPP. The haze value of the film is less than 1.5% whose gloss is more than 90.0%. The haze value will increases by 0.1% and the gloss is reduced by 0.9% within one month,representing high gloss,low haze value and stability in time. The master batch is better than reference samples in terms of fraction coefficient and optical properties,while there is no much changes in mechanical properties. In general,the new developed slip masterbatch has exceeded the performance of the import material.