RTP Company: The Global Leader in Specialty Compounding

End-Use Case Study —

Printer Shaft Assembly

• Structural, Thermal Properties Critical

Tektronix, Inc., Wilsonville, OR, needed a specialty compound providing excellent structural, thermal, dimensional and chemical resistance properties for a printer shaft assembly. The assembly is an integral part of the Tektronix Phaser® 340 printer.

The material chosen, RTP 1311, is a polyphenylene sulfide (PPS) specialty compound containing a high loading of reinforcing glass fiber. This compound achieves a tensile modulus of 3 x 10⁶ psi and a flexural modulus of 2.8 x 10⁶ psi. RTP 1311 features a heat distortion temperature of 500 degrees F (at 264 psi) and mold shrinkage of just 0.001 in/in at 1/8 in thickness.

Vision Plastics worked with RTP Company to achieve the desired properties and maintain processing ease. Ready access to an RTP Company sales engineer and Technical Service professional was critical during qualification, according to Kurt Jenkins, Vision Plastics engineer.

Vision Plastics is a custom injection molder located in Wilsonville, OR. The company molds all engineering resins, and specializes in thermoplastic elastomers, both insert molding and over molding.

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