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本文叙述了实验性的两种连续镀膜机，无论哪一种，都有将硫化锌（ＺｎＳ）和氟化镁（ＭｇＦ２）的介质膜层交替地蒸镀在聚脂卷膜（此卷膜幅宽７５毫米和８００毫米，长２００米）上的能力。多层干涉膜每一镀层的厚薄能精确控制，这一点，经过大量试验，镀层从３到９层，在长度宽度上，二者都保持均匀的光学特性． 这种镀层厚度变化是沿聚脂膜的长度变化而变化．在一百米范围内，变化不超过±５％。本文论述了薄膜被用来制造太阳的热幅射挡板，同时也论述了提高多层膜的使用寿命问题。
This article describes experimental two types of continuous coating machines. In either case, dielectric layers of zinc sulfide (ZnS) and magnesium fluoride (MgF2) are alternately deposited on a polyester film roll 75 mm wide and 800 mm long, 200 meters long). The thickness of each coating in a multi-layer interference film can be precisely controlled. In this regard, after extensive experimentation, the coatings range from 3 to 9 layers in length and both maintain uniform optical properties. The change in coating thickness varies along the length of the polyester film. Within a hundred meters, the change does not exceed ± 5%. This article discusses the thermal radiation baffle where the film is used to make the sun and also addresses the issue of improving the service life of multilayer films.