Liners with PTFE layer

Main component of PTFE liners is the layer made of Polytetrafluoroethylene, also widely known by the DuPont brand name Teflon. PTFE is a non-reactive substance and it resists degradation from virtually all chemicals at room temperature. So it is often used in containers and pipework for reactive and corrosive chemicals.

Application range of the PTFE-based liners covers aggressive chemicals and compositions; crystallized iodine is a typical example.

Usually this type of liners consist of three layers: EPE layer is in the middle and PTFE covering one or both surfaces of the EPE layer. If there is one PTFE layer, the other side of the EPE layer is laminated with PET layer in most cases.

PTFE liners tend to bend (“potato chips” effect) and because of that, wadding process is not easy. Special attention must be paid to the retention of the liners inside lids and to the packing and handling of the lined caps.