METHOD AND A DEVICE FOR PRODUCING GRAIN EFFECTS AND THE LIKE ON COVERINGS, PARTICULARLY OF RUBBER OR OF SYNTHETIC OR ARTIFICIAL MATERIALS

摘要

A covering sheet, which is preferably already marbled or veined, is subjected to a scraping operation resulti ng in the formation of shavings. The shavings are deposited on the previously scraped sheet and made to adhere thereto again, thus producing a substantially non-directional grain effect.