Canadian Plastics

Compound’s bondability enhances two-step molding

Pomona Electronics' digital Multimeter Probe for diagnosing and troubleshooting circuitry is made with a two-step molding process. The first-step material for the inner mold is an RTP 100 Series polyp...

April 1, 2001   Canadian Plastics



Pomona Electronics’ digital Multimeter Probe for diagnosing and troubleshooting circuitry is made with a two-step molding process. The first-step material for the inner mold is an RTP 100 Series polypropylene specialty compound with a UL flammability rating of V-2 at 1/32 in. This compound provides excellent moldability and non-corrosive characteristics.

The second-step overmold material is an RTP 2800 Series pre-colored thermoplastic elastomer incorporating Advanced Elastomer Systems’ Santoprene resin. The elastomer bonds well with polypropylene and gives the probe a soft-touch, non-slip grip.

RTP Company’s color specialists met the critical color matches for both materials. The polypropylene compound is precolored in red or black and paired with a light or dark gray elastomer. In addition, the company recently introduced connectors that feature RTP compounds in blue and yellow.

RTP Company 800-433-4787


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