BOPP (biaxially-oriented polypropylene) special material and'white point '-free BOPP film

The invention discloses a special material for BOPP (biaxially-oriented polypropylene) and a BOPP film without white spots, the special material for BOPP comprises polypropylene powder produced by a high-activity Z-N catalyst and an antioxidant additive system, and the antioxidant additive system comprises an antioxidant and an acid acceptor. According to the improved BOPP special material, an antioxidant B215 is adopted, and an acid acceptor is calcium stearate. The polypropylene powder produced by the high-activity catalyst has the characteristic of low ash content, and meanwhile, the organic acid acceptor effectively reduces the agglomeration phenomenon of inorganic particles, so that the generation of white spots in the production process of the BOPP film is eliminated, and the method is particularly suitable for improving the quality of the BOPP special material. 本发明公开了一种BOPP聚丙烯专用料以及无"白点"BOPP薄膜，该BOPP聚丙烯专用料包括：高活性Z-N催化剂生产的聚丙烯粉料以及抗氧化助剂体系，抗氧化助剂体系包括：抗氧剂和吸酸剂。改进的BOPP聚丙烯专用料采用抗氧剂为B215、吸酸剂为硬脂酸钙。高活性催化剂生产的聚丙烯粉料具有低灰分