Wacker to launch release agents for PS labels at Labelexpo

Munich, Germany-based chemical company Wacker will present paper-coating and film-coating agents at Labelexpo Europe. Highlights will be a new product for coating unprimed polyester, as well as a new silicone polymer for industrial label applications with a very flat release-force profile. The solvent-free product, marketed under the Dehesive 971 brand, cures extremely quickly and is a suitable polymer component for high-quality, yet cost-effective low-platinum systems, says the company.

Dehesive 971 is a highly reactive, platinum-catalyzed addition-curing silicone polymer. As a result of its high reactivity, just trace amounts of the platinum catalyst suffice for complete curing. Compared to conventional systems, the company says that platinum savings of up to 60 percent are possible.  

Low-platinum systems based on Dehesive 971 can be used on high-speed coating lines. They produce a completely cured silicone film whose release properties have been optimized for machine peeling at high throughputs. Consequently, release-liner and label manufacturers can lower the costs of the entire silicone system without affecting the silicone film’s quality.  

The silicone coating system’s properties can be fine-tuned by adjusting the amounts of other system components – crosslinker, platinum catalyst and, if applicable, controlled-release additive – to suit application conditions.

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