Gumming
A rubber coating is generally the presence of a rubber-like surface. More specifically and more frequently, it is understood to mean an adhesive surface made from a special adhesive (originally gum arabic ). A surface prepared in this way is intended to enable - often later - gluing .
Adhesive rubber coatings
In today's parlance, however, only some adhesive surfaces are referred to as rubberized . Usually these are starch - or dextrin - based adhesives on paper that later have to be moistened with water or saliva to bond them together. The best known is gumming on postage stamps , but it can also be found on cigarette paper , envelopes and wet adhesive tape .
Non-adhesive rubber coatings
Rubber linings are used in technology as a corrosion protection lining against aggressive media in containers, storage tanks, pickling tanks, pipelines, flue gas scrubbers and process engineering systems. Rubber extruded into webs is applied to substrates (e.g. steel ) with adhesion promoters or adhesives . Harzer Apparatewerke brought the first rubber linings onto the market in 1923 and thus enabled the chemical industry to build larger containers and reaction apparatuses with corrosive substances. Today rubber linings are used as linings with a thickness of 3 to 6 mm as hard or soft rubber. Natural rubber and synthetically produced types of rubber form the basis . For special applications, the manufacturers offer approvals according to WHG, KTW etc.
The rubber coating of textiles makes them impermeable to air and water. Areas of application were truck tarpaulins, raincoats, fire hoses or rubber boats. The material rubber was largely displaced from these areas of application by textile coatings with plastics, mostly PVC or polyethylene ; An exception are air mattresses made of rubberized cotton, which still appear in stores from time to time.