| 摘要 |
<p>Surface treatment of at least one zone of a plastic article involves (a) a fluorination stage, and (b) a high energy surface oxidn. stage. Pref. the article may be a multi-layer composite, with a surface layer of plastic. The plastic is a polyolefin. Fluorination lasts at most 12 secs., and may follow the oxidn. stage. Oxidn. is by corona treatment. In the surface-treated zone the concns. of F and O are such that the atomic ratio of P:C, measured by electron spectroscopy for chemical analysis, at a depth of 1.5 nm, is at least 0.08, and the atomic ratio of F:C, measured in the same way, is 90-290 % of the ):C ratio. The treated article is printed.</p> |
