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发明公开
CN108312688A 一种用于烟草包装的微透气塑料薄膜及制备方法 无效 - 撤回

一种用于烟草包装的微透气塑料薄膜及制备方法
摘要：
本发明涉及包装薄膜的制备领域，公开了一种用于烟草包装的微透气塑料薄膜及制备方法。包括如下制备过程：（1）将皂型松香胶涂布于无纺布的表层，再进行找平；（2）将皂型松香胶层与PTFE膜层进行粘结复合，制得复合薄膜前驱体；（3）将复合薄膜前驱体通过冷辊碾压，制得用于烟草包装的微为0透.7气~0塑.9料g/薄cm膜3。微本，发透明气制塑得料的薄微膜透的气透塑气料度薄为膜8与~1普2L通/h烟，密草度包装薄膜相比，透气性好，保润性优良，适用于高档烟草的包装，节省森林资源，环保性好，并且制备过程简单，生产效率高。
摘要（英）：

The invention relates to the field of preparation of packaging films and discloses a micro-breathable plastic film for tobacco packaging and a preparation method. The preparation method comprises thefollowing preparation processes: (1) coating the surface layer of non-woven fabric with soap type rosin size, and then, performing leveling; (2) bonding and compounding the soap type rosin size layerwith a PTFE (polytetrafluoroethylene) film layer to prepare a compound film precursor; and (3) rolling the compound film precursor through a cold roller to obtain the micro-breathable plastic film fortobacco packaging, wherein the air permeability of the micro-breathable plastic film is 8-12L/h, and the density of the micro-breathable plastic film is 0.7-0.9g/cm<3>. Compared with a common tobaccopackaging film, the micro-breathable plastic film prepared by the preparation method disclosed by the invention has the advantages of being good in air permeability, good in moisturizing property, suitable for high-grade tobacco packaging, saved in forest resources, good in environmental friendliness, simple in preparation process and high in production efficiency.

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