| 摘要 |
<p>A process has been discovered to mix and apply a mixture of a self-curable material with an accelerator which will permit the material to cure quickly on an article on which the material is applied, but not cure in the equipment and applicator conduit used to apply the quick-curable mixture. Thus, process interruptions do not incur the economic and operational disadvantages inherent in a two-component system from which a quickcuring mixture of a self-curable material and accelerator is dispensed. More specifically, the process comprises applying, sequentially, through the same applicator means, the self-cur-able material (no accelerator), then the mixture containing accelerator, and finally the self-curable material (no accelerator). Since the same applicator is used, the transition from self-curable material only, to the mixture with accelerator, and back to self-curable material, may be accompanied with an increase and decrease, respectively, of accelerator in transition zones, connecting zones in which there is no accelerator and a quick-curing zone; in the latter zone there is a predetermined ratio of accelerator to self-curable material.</p> |
