EMI Shielding & Non Conductive Thermoplastics

Parker Chomerics is in a unique position to offer housing material choices using either EMI Shielding electrically conductive PREMIER or non conductive thermoplastics.

PREMIER is available in two polymer grades, PC/ABS and PEI. Both are filled with a blend of nickel plated carbon fiber and nickel graphite powder. The engineered filler blend results in high shielding performance at lower volume filling, allowing a high retention of base polymer mechanical characteristics.

The single pellet material allows cost effective injection molding as with any other filled polymer system.

Since PREMIER injection molded parts need no secondary EMI coating they offer the highest potential for part cost reduction. Depending on part size, cost reductions of up to 60% are obtained. As compared to metal die castings, no machining is needed to obtain tolerance control. As compared to standard paint/plated plastics, no secondary operations are required to obtain shielding. The fillers within PREMIER increase the material cost so as the part size increases, the savings from EMI secondary coating operations are reduced.


PREMIER is chosen over non-conductive thermoplastic with secondary EMI coatings for parts with

Non conductive thermoplastics with secondary EMI coatings are generally chosen in place of EMI shielding conductive thermoplastics for parts with:

The choice of thermoplastic is influenced by environmental, mechanical, maximum temperature, flammability and part design needs. Our design engineers can work through your needs and design in the optimum material. A successful plastic part molding application combines all materials and processes to provide the optimal cost model.

Commonly used materials: ABS, PC, PC/ABS, PBT, PEI and Nylon all have grades which can be post molding treated with an EMI coating and provide shielding up to 100 dB. They each provide a unique performance versus cost benefit. Our expertise is not limited to these materials and we can process any polymer you may need. Let our design engineers evaluate your needs and make recommendations. If you are considering a metal-to-plastic conversion, polymers with heat distortion temperatures up to 280 °C can be used to provide the desired performance.


NOTICE: The information contained herein is to the best of our knowledge true and accurate. However, since the varied conditions of potential use are beyond our control, all recommendations or suggestions are presented without guarantee or responsibility on our part and users should make their own tests to determine the suitability of our products in any specific situation. This product is sold without warranty either expressed or implied, of fitness for a particular purpose or otherwise, except that this product shall be of standard quality, and except to the extent otherwise stated Chomerics’ invoice, quotation, or order acknowledgement. We disclaim any and liability incurred in connection with the use of information contained herein, or otherwise. All risks of such are assumed by the user. Furthermore, nothing contained herein shall be construed as a recommendation to use any process or to manufacture or to use any product in conflict with existing or future patents covering any product or material or its use.