Heat and pressure.

Heat sealing of plastic-to-plastic (clamshell, printed blister, separate front and back blister) is done by bonding two parts of plastic together under the influence of heat and pressure. The package will pass through a patented heating and cooling station in order to achieve a perfect seal. Sealing at the heated station is automatic and is controlled by a PLC seal timer. A cooling station immediately following the the heated station, is used to flatten the package flange and fuse the two pieces of plastic together.

Expert in this field

This sounds easy, but for successful heat sealing of plastic-to-plastic it is of the utmost importance that the right type of plastic is used for making the blisters. Not all types of plastic are suitable for heat sealing, and depending on the design of the blisters, the tooling design is always a critical factor in getting the packaging process to run smoothly. Ecobliss is an expert in this field: both in the design and development of plastic-to-plastic blisters, in the choice of packaging equipment and in the gearing-up of production tooling.