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INTERPLAS 2011 - Plasma multiplies the adhesion of plastics
At the most important event for the British plastics industry (INTERPLAS 2011, Sept. 27-29, Birmingham) Plasmatreat will present live the power of Openair®-Plasma for adhesion solutions.
The company will exhibit a bonding station where the difficult to bond plastics PBT and PE – once plasma treated and once untreated - will be bonded without primer by means of a UV curing silicon adhesive from Wacker. Hereafter the difference of the bonding strengths will be made evident in a tensile load test.. The result will probably surprise most of the visitors: The tensile loads for separating the combined plastics must be nearly ten times higher when pretreated with Openair-Plasma. When these parts are separated it becomes also visible that there is not a failure of adhesion but a break down of the cohesion forces inside the adhesive that is responsible for the final collapse of the assemblage. Visitors are invited to carry out the adhesion test by themselves.
Openair®-Plasma rotation jet treating a plastic component and thus increasing its surface energy.
The increase in surface energy initiated by the plasma activation leads to long term stable bondings and secures the adhesion of water-based adhesive or paint systems on very adhesive-unfriendly surfaces such as nonpolar plastics. With the technology Openair® it now even becomes possible to bond previously incompatible plastics by means of plasma only.
