CHAPTER 3 | PART DESIGN GUIDELINES Wall Thickness (mm) C o o li n g T im e ( S e c ) 40 35 30 25 20 15 10 5 0 0 1 2 3 4 ABS PC Nylon 6/6 Figure 2 - Designing for Wall Thickness Changes Bad Better Recommended Recommended Poor High Stress Ideal Figure 3 - Internal and External Radius Guidelines .5W Min Inside Rad + W Poor High Volume FIGURE 1 - Wall thickness vs . cooling time of various plastics FIGURE 2 - Designing for wall thickness changes FIGURE 3 - Internal and external radius guidelines Design Guide 9 RIB DESIGN GUIDELINES The minimum distance ribs should be spaced is three times the nominal wall thickness (3W) . 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.

CLEVELAND – October 31, 2018 – At MD&M Minneapolis today, PolyOne Corporation announced that Trilliant™ HC material outperforms FR PC/ABS after exposure to harsh disinfectants, according to tensile strength stress tests performed by an independent A2LA-accredited lab. Testing results show that Trilliant HC 2020 retains higher tensile strength than common FR PC/ABS materials after seven-day exposure to typical disinfectants. Developed as a drop-in replacement for FR PC/ABS, this innovative Trilliant HC formulation was recently used successfully by a medical device OEM seeking to improve resistance to cracking and brittleness for its housings.

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PCR content is recovered at the end of the product life cycle, collected and processed by local recycling facilities, rather than at the original polymer manufacturing site like PIR content. 

Examples of these emissions include greenhouse gases created through polymer production and equipment, on-site utilities, or transportation methods to the brand owner or original equipment manufacturer (OEM) in the value chain. 

Avient Launches New reSound™ REC Thermoplastic Elastomers with Recycled Content for PC/ABS Overmolding Avient Launches New reSound™ REC Thermoplastic Elastomers with Recycled Content for PC/ABS Overmolding (Photos Avient, AVIPR0XX) To downl

The focus for this study was to develop thermoplastic elastomer compounds that would overmold onto substrates made from Nylon (PA), Polycarbonate (PC), Acrylonitrile-butadiene-styrene (ABS), and PC/ABS alloys

The focus for this study was to develop thermoplastic elastomer compounds that would overmold onto substrates made from Nylon (PA), Polycarbonate (PC), Acrylonitrile-butadiene-styrene (ABS), and PC/ABS alloys

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