中国塑料 ›› 2011, Vol. 25 ›› Issue (10): 69-71 .DOI: 10.19491/j.issn.1001-9278.2011.10.014

• 加工与应用 • 上一篇    下一篇

高性能气调保鲜包装用CPP热封膜的研制

林渊智 陈文韬 陈盛 史凤烟   

  1. 福州佳通第一塑料有限公司
  • 收稿日期:2011-09-13 修回日期:1900-01-01 出版日期:2011-10-26 发布日期:2011-10-26

Development of CPP Heat-sealing Film for Modified Atmosphere Packaging

LIN Yuanzhi CHEN Wentao CHEN Sheng SHI Fengyan   

  • Received:2011-09-13 Revised:1900-01-01 Online:2011-10-26 Published:2011-10-26

摘要: 采用低熔点材料如聚烯烃弹性体(POE)、聚烯烃塑性体(POP)、茂金属聚乙烯(mPE)与三元共聚聚丙烯(PP)共混作为热封层,并添加适量的爽滑剂克服薄膜发黏的问题,采用三层共挤流延法制备了高性能气调保鲜用流延聚丙烯(CPP)热封膜。结果表明,采用POE-868作为低温热封材料时,与三元共聚PP的相容性较好,增韧效果明显;添加12份POE-868和2份爽滑剂,熔体温度控制在245~255 ℃,冷却辊温度控制在22 ℃,制备的CPP薄膜的各项性能均符合指标要求,其始封温度低于102 ℃。

关键词: 热封膜, 流延, 气调包装, 聚烯烃弹性体, 热封温度, 聚丙烯

Abstract: Polyolefin elastomer (POE), polyolefin plastomer (POP), metallocene polyethylene (mPE) blended with polypropylene terpolymer as low-temperature heat-sealing layer, heat sealing polypropylene cating films (CPP) for modified atmosphere packaging were prepared via three-layer co-extrusion casting technology. It showed that the properties of obtained CPP films met the demands, and their heat-sealing temperature was under 102 ℃, while the heat-sealing layer was composed of polypropylene terpolymer blended with 12 phr of POE-868 and 2 phr of anti-blocking slip additive, melting temperature was controlled between 245 ℃ and 255 ℃, and cooling roll temperature was 22 ℃.

Key words: heat-sealing film, casting, modified atmosphere packaging, polyolefin elastomer, heat-sealing temperature, polypropylene