Roller Applying Paste

Rollers and Brushes

Adhesives are often applied using brushes and sometimes rollers. The brushes will have synthetic or natural bristles, like hair from boars, sheep, horses, or goats. Sponge rollers spread paste quickly, as demonstrated in the photo, where a roller brush applies wheat starch paste to endpapers joining a text block to its covers, in a process called casing in.