A highspeed blister line with a continuous cartoner stutenseeschloss holte, 19 june 2012. Oystar iwk, a leading manufacturer of cartoning machines, and mediseal, a technological pioneer in the field of blister machines have established a partnership. Effective immediately, the companies will together be developing and producing packaging lines for the highperformance sector. &ldquowith this collaboration, we are pooling our resources and increasing our productivity,&rdquo explained markus ehl, ceo of oystar holding.