
The sunless tanning lotion includes two different elements, a tanning agent and a protein complement that need to remain separate until application. The solution, a two-component dispensing system supplied by RPC Wiko-USA (Exton, PA), keeps the elements separate in two chambers that make up part of the system.
The system includes two product chambers, or tubes, and a pumping system. Working with Kenilworth, NJ-based Schering-Plough, Wiko customized its own Twin mechanical vacuum pumping system to meet the requirements of Schering-Plough. All of the components are injection-molded. The chambers are bottom-filled by a modified tube filler at one of Schering-Plough’s facilities.