中国塑料 ›› 2025, Vol. 39 ›› Issue (3): 41-47.DOI: 10.19491/j.issn.1001-9278.2025.03.008

• 材料与性能 • 上一篇    下一篇

PE/PP/微米SiO2消光热封膜的研制及其性能研究

苏羽航1,4(), 林渊智1,4(), 毛健全2, 王永祥2, 刘向3, 余立1,5, 柯俊沐1,5, 陈忆诗1   

  1. 1.福建技术师范学院,福州 350300
    2.福融新材料股份有限公司,福州 350300
    3.天津市华恒包装材料有限公司,天津 300450
    4.食品软塑包装技术福建省高校工程研究中心,福州 350300
    5.福州市包装工程行业技术创新中心,福州 350300
  • 收稿日期:2024-05-21 出版日期:2025-03-26 发布日期:2025-03-24
  • 通讯作者: 林渊智(1967-),学士,教授级高级工程师,主要从事包装材料高性能化研究,963947786@qq.com
    E-mail:443900336@qq.com;963947786@qq.com
  • 作者简介:苏羽航(1984-),硕士研究生,副教授,主要从事包装材料开发研究,443900336@qq.com
  • 基金资助:
    福建省科技厅工业引导性项目(2020H0028);福州市科技计划项目(2020?PT?150);福建省科技厅高校产学合作项目(2019H6026)

Development and performance of PE/PP/micron SiO2 matting and heat⁃sealing film

SU Yuhang1,4(), LIN Yuanzhi1,4(), MAO Jianquan2, WANG Yongxiang2, LIU Xiang3, YU Li1,5, KE Junmu1,5, CHEN Yishi1   

  1. 1.Fujian Polytechnic Normal University,Fuzhou 350300,China
    2.FOROP Advanced Materials Co,Ltd,Fuzhou 350300,China
    3.Tianjin Huaheng Packaging Materials Co,Ltd,Tianjin 300450,China
    4.Fujian Universities and Colleges Engineering Research Center of Soft Plastic Packaging Technology for Food,Fuzhou 350300,China
    5.Technical Creation Center for Packaging Engineering in Fuzhou,Fuzhou 350300,China
  • Received:2024-05-21 Online:2025-03-26 Published:2025-03-24
  • Contact: LIN Yuanzhi E-mail:443900336@qq.com;963947786@qq.com

摘要:

设计3层消光热封膜复合结构,筛选适合的聚乙烯与聚丙烯做为视觉层材料,在芯层中添加微米SiO2来提高薄膜雾度,通过3层共挤流延法进行薄膜的制备,探讨薄膜的各项性能。结果表明,PE⁃HD与共聚聚丙烯组成最佳消光材料,随着PE⁃HD在视觉层中含量的增加,可以提高PE⁃HD/PP混合体系的冲击强度、储能模量和损耗模量,对薄膜具有增强增韧的作用,可加快PE⁃HD/PP混合体系的结晶速率,加快薄膜雾度的形成;且当PE⁃HD在视觉层中含量为40 %时,薄膜的雾度达到80 %,光泽度为7.8 %,薄膜消光效果最好;当微米SiO2在芯层中的含量为3 %时,薄膜的拉伸强度和断裂伸长率最高,达到29.5 MPa和64 %,薄膜的透光率为58.8 %,雾度提高到82.3 %。

关键词: 消光膜, 热封, 微米二氧化硅, 雾度, 3层流延共挤

Abstract:

The composite structure of a three⁃layered matting and heat⁃sealing film was designed by selecting suitable polyethylene (PE) and polypropylene (PP) as visual layer materials and adding micron SiO2 into the core layer to improve the haze of the film. The film was prepared by using a three⁃layer co⁃extrusion casting method, and its properties were investigated. The results indicated that PE⁃HD and copolymerization⁃type PP could be combined to form the best matting material. With an increase in the PE⁃HD content in the visual layer, the PE⁃HD/PP hybrid system obtained an improvement in the impact strength, storage modulus, and loss modulus, indicating a reinforcing and toughening effect on the film. This also, accelerated the crystallization rate of the PE⁃HD/PP hybrid system and promoted the haze formation of the film. The film showed a haze of 80 % and a gloss of 7.8 % at a PE⁃HD content of 40 wt% in the visual layer along with an optimal matting effect. The film also presented the highest tensile strength of 29.5 MPa and the highest elongation at break of 64 % at a micron SiO2 content of 3 wt% in the core layer. The film obtained a light transmittance of 58.8 %, and its haze increased to 82.3 %.

Key words: matting film, heat sealing, micron silicon dioxide, haze, three?layer cast co?extrusion

中图分类号: