In the present paper the application of the supercritical impregnation technology to the production of a polypropylene (PP) film with insecticides properties has been studied for its potential application in greenhouse facilities. A statistical experimental design was conducted to determine the effect of impregnation time, amount of sample, pressure and temperature on the impregnation loading of pyrethrins in PP. Two experimental procedures have also been evaluated and compared: batch mode and semi-continuous mode. Optimal impregnation time was established at 5 h, but, variation in pyrethrin amounts (1–2 mL) did not show any significant effects on the loading of the sample. On batch mode, the maximum impregnated extract loadings were obtained at 55 °C and 10 MPa. Nevertheless, the batch mode presents some difficulties with regard to scaling up. On the other hand, the semi-continuous mode presented adequate results at 35 °C.

在本文中，已经研究了超临界浸渍技术在生产具有杀虫剂性能的聚丙烯（PP）膜中的应用，因为其在温室设施中的潜在应用。进行了统计实验设计，以确定浸渍时间，样品量，压力和温度对PP中除虫菊酯的浸渍量的影响。还评估并比较了两个实验程序：批处理模式和半连续模式。最佳浸渍时间设定为5 h，但是除虫菊酯量（1-2 mL）的变化对样品的上样量没有显着影响。在分批模式下，在55°C和10 MPa下获得了最大的浸膏浸入量。然而，批处理模式在扩展方面存在一些困难。