Thermoforming blister packaging film

Ticona, the copolymers division of Celanese AG, has developed the first cyclo-co-polymer (COC) blend that enables steam sterilization of blister packs made from Topas® COC film.

These blends enable Topas® COC-based films to be used as barrier materials for disinfecting products, such as single-dose liquid drugs and other drugs, solutions and veterinary pills.

The new formulation combines Topas® 6013 COC and polyolefin to produce a heat-resistant film that will not deform when heated to 121°C for 20 minutes. The film made of the mixture is relatively rigid and has a low water vapor transmission rate.

“We have used this recipe to heat the film into bubbles with a diameter as large as 2.5cm,” said Ekkehard Beer, responsible director for Topas®COC packaging and film. "The new Topas?COC-polyolefin mixture can be quickly processed in automated equipment with very few problems."

“These films hardly shrink or warp during thermoforming and the product has a uniform wall thickness. The resulting bubbles are translucent or white, with a smooth surface and good gloss. In addition, the ductility of the mixture means that the film is generally There are no sharp edges or fringes, so it can also be considered for baby protection products."

Topas?COC is extremely pure, halogen-free, has good hydrolytic stability and extremely low moisture absorption. They also have excellent biocompatibility and meet the requirements of Class VI of the USP (United States Pharmacopoeia) and have now received the FDA (United States Food and Drug Administration) General Drug and Equipment Document Number.

The FDA notification of food contact substances allows it to directly contact various types of food when applied under all conditions of use. In addition to blister packs, pre-filled syringes and other types of pharmaceutical packaging, they are also excellent products for medical and diagnostic devices, optical components, capacitor films and printer cartridge packaging machines.