When overmolded, GLS TPEs bond permanently and seamlessly to many different plastic substrates, including polypropylene (PP), polycarbonate (PC), acrylonitrile-butadiene- styrene (ABS), PC/ABS, copolyester, polyamide (nylon) and polystyrene (PS).

These regions are excellent for ejector pins due to the increased surface area. Solvent Solvents soften surfaces of plastic (plastic must be soluble)—best for amorphous or low crystalline plastics, such as ABS, acrylic, cellulosic, PC, PS, PPO, and vinyls. Venting Guidelines by Resin • PC: .001"–.002" depth & .250" width • PC/PSU: .002"–.003" depth & .250" width • PES: .003"–.004" depth & .250" width • PEI: .001"–.003" depth & .250" width • PP: .001"–.002" depth & .250" width • ABS: .0015"–.0025" depth & .250" width • PEEK: .002"–.004" depth & .250" width FIGURE 40 - Venting Guidelines Vent Groove Vent Land Vent FIGURE 44 - Venting guidelines FIGURE 43 - Venting areas 20 Gravi-Tech CHAPTER 5 | PROCESS OPTIMIZATION Process optimization ensures a quality process and minimizes cycle time.

LEADING OUTDOOR PRODUCTS OEM P R O T E C T I V E P H O N E C A S E • Alternative to traditional PC/ABS for improved toughness and chemical resistance • Substrate must have improved bondability to a protective TPE overmold • Looking for a differentiated “feel” • Offered a proven expertise in selecting the right combination of substrate polymer, TPE for overmolding, and color concentrate for optimal processing and performance • Provided custom solution after collaborating with molders and OEM through on-site trials and troubleshooting support • Enabled the customer to expand their offering for the outdoor consumer market • Custom Nymax™ PA6 Formulation KEY REQUIREMENTS WHY AVIENT?

Good bonding to PC/ABS • Acceptable compression set • Wide hardness range • Cost effective VACUUM CLEANER MANUFACTURER V A C U U M C L E A N E R G A S K E T • Offered overmolding solution with proven success in passing the peel test • Delivered a TPE solution with good sealing performance to fulfill customer’s requirements Versaflex™ OM 9140 Translucent KEY REQUIREMENTS WHY AVIENT?

Versatile, corrosion resistant and conductive with excellent EMI shielding High strength with excellent abrasion, fatigue and chemical resistance High strength with excellent abrasion, fatigue and chemical resistance

It has good tensile, thermal, flex, and impact properties like nylon (PA), while maintaining the excellent wear, chemical resistance, and dimensional stability of acetal (POM). Polyketone’s chemical resistance is excellent even at elevated temperatures and long durations. However, it surpasses ABS, COPET and PC alloys.

It has good tensile, thermal, flex, and impact properties like nylon (PA), while maintaining the excellent wear, chemical resistance, and dimensional stability of acetal (POM). Polyketone’s chemical resistance is excellent even at elevated temperatures and long durations. However, it surpasses ABS, COPET and PC alloys.

Other requirements were abrasion resistance and excellent aesthetics. Avient recommended an OnFlex™-S multicomponent TPE, which offers excellent adhesion to ABS and can be molded at lower temperatures and injection pressures than competitive products. Gripping feel = safety and usability for customers: Hand grips created from overmolded OnFlex-S TPE provide excellent anti-slip performance even when wet.