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从1979年起,我们开始了对榨菜软包装用聚乙烯/聚乙烯醇复合薄膜(以下均简称PF/PVAL膜)的研制工作。目前不仅在实验室研制成功,而且在中试规模的机械设备制造与复合薄膜的制作上均一次试车成功,可以按中试规模小批量生产。1983年即可由成都塑料二厂正式投入生产。复合薄膜的品种繁多,国外已经发展了50种以上,但有的因为不同厂家之间的竞争,限于专利权的原因不得不各自提出一些不同品种来应市,而事实上有的品种之间只是在结构上
Since 1979, we started the development of the polyethylene / polyvinyl alcohol composite film (hereinafter referred to as PF / PVAL film) for the flexible packaging of mustard. At present, not only the successful development in the laboratory, but also in the pilot scale machinery and equipment manufacturing and composite film production on a successful trial, you can pilot scale small batch production. In 1983, Chengdu Plastic Factory can officially put into production. There are many kinds of composite films, and more than 50 foreign ones have been developed. However, some of them have to come up with different varieties because of the competition among different manufacturers because of their patent rights. In fact, Structurally