Comma Scraper, used in coating, gluing, laminating machine, compositing. Comma Scraper, Shanghai Donghui ... Wearing resistance is excellet, friction effect is very clean. 9. used in coating machine, gumming machine, laminating machine, composite machine. Printing ... woolen paper roller, rubber roller, ink proofer, knurling tool, chrome roller, teflon roller, ceramic roller, stainless steel roller etc. ...