PHILADELPHIA, Pa.--Stockwell Elastomerics has announced the availability of the Stockwell DP-1001 polyimide film-supported, silicone pressure sensitive adhesive with a new release liner that can be easily removed. Used with die-cut silicone gaskets and cushioning pads, Stockwell DP-1001 has a 91# poly-coated opaque white release liner that reportedly separates from the silicone adhesive three times faster, improving productivity and reducing scrap due to gaskets damaged during liner removal. The release liner also supports production of high volumes of small cushioning pads where the time required to remove the release liner was previously prohibitive.

Silicone polymer adhesives are normally provided with a thin, clear PET film release liner, which can be difficult for assemblers to separate and remove from the adhesive backing on die-cut gaskets and cushioning pads. The difficulty in separating clear PET film release liners can contribute to damaged gaskets due to incorrect liner removal, resulting in production delays and higher manufacturing costs.

Some designers and users have reportedly been reluctant to specify silicone pressure-sensitive adhesives because of past problems with release liners. The DP-1001 solves these problems and makes the use of silicone PSAs viable for many gaskets and cushioning pads, the company says.

According to the company, an important additional feature of the DP-1001 product is that the silicone adhesive with polyimide film carrier performs very well in both high temperature and low temperature applications. Its wide temperature range capability is said to be an improvement over the PET film carrier's temperature range.

"The DP-1001, with this easy to remove release liner, gives our customers a productivity advantage for speed and performance in assembly," says Stockwell Elastomerics President Bill Stockwell. "And the silicone adhesive with polyimide film carrier combination performs superbly in high temperature uses where others fail."

Stockwell Elastomerics (www.stockwell.com) is ISO9001-2008 registered, with core competence in the fabrication and molding of silicone rubber and similar high-performance elastomers. The company's in-house capabilities include adhesive lamination, custom molding, die cutting, and water jet cutting.