Creped paper backings

Creped paper backings can be divided roughly into two groups. 

Flat creped papers saturated with rubberlike polymer latices generally have a back-size coating to control the unwind characteristic without impairing the adhesion of paints. In combination with natural-rubber-based adhesives, these tapes are used for masking in the automotive industry, for assembling electronic components, and insulation of low-voltage devices etc. 

Widely used backings are rigid and conformable films, nonwovens, fabrics, creped paper, and foams based on pol)mrethanes, polyolefins and their copolymers, etc. Generally the thickness of the adhesive layer has to be increased with increasing roughness of the substrates. Foams are especially usefid for rugged or profiled surfaces. 

Pressure sensitive tapes and labels are offered with a variety of backing materials such as crepe paper, aluminum foil, fabric, cellophane, kraft paper, cellulose acetate, polyester film, polyethylene, polypropylene, plasticized poly (vinyl chloride), woven glass fiber cloth, or other flexible materials. Pressure sensitive adhesives may be applied from solvent, latex, hot melt, or radiation cured 100% solids systems. A wide variety of coating methods are utilized such as roll coating, calendering, slot die, and transfer coating. 

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