The difference in moisture uptake is also evident in property change between samples tested dry as molded compared to equilibrium conditioned, as shown in the chart above. If the material is allowed to stay in an injection molding machine or extruder (profile, sheet, etc.) too long, the material will start to discolor and brown ‘freckles’ may appear. 

Injection molding parameters, startup and shutdown, mold design and troubleshooting recommendations for Therma-Tech™ Thermally Conductive Formulations

GLS™ TPEs - Injection Molding Guide Guide to overmolding material selection, part and mold design, material handling and preparation, TPE injection molding, processing, maximizing adhesion and troubleshooting for GLS™ TPEs Provided easy injection molding process and pass durability test with good wear resistance

These questions will help define the appropriate combination of modular components: • What type of process - extrusion/molding? FlexCart Reservoir Cassette • Key component of the FlexCart range providing the ability to change colors in minutes • A ten-liter container housed in a removable cassette, with built in tube storage facility Peristaltic Pump • Ideal for use on shorter production runs & frequent color changes • Re-usable with replaceable tubing • Typically used for injection molding Progressing Cavity Pump • Suited to longer production runs & continuous operation • Accurate, interchangeable & available in five sizes • Typically used in extrusion CMG Controllers • CMG3000 - A robust, straightforward analogue control of metering • CMG5000 - Expanded functions, touch screen, networking & data export • CMG6000 - As for CMG5000 plus control of HP melt injection pumps & melt pressure transducers • FlexG - CMG3000 + load cell system for loss in weight functionality Gyroscopic Mixing & Recirculating • Gyroscopic mixing designed for the patented PlanetPak design • FlexCart Re-Circ Dual paddle mixer designed for larger FlexCart units to rejuvenate materials • Systems designed to maintain liquid colors and additives in prime condition FlexCart FlexCart Mini FlexCart Micro FlexCart Nano FlexCart M.I. Footprint (LxW cm) 86 x 71 98 x 38 60 x 35 55 x 30 86 x 80 Typical max. throughput (kg/hr) 1000 625 250 50 120 Max. metering rate (cc/s) 10 10 10 1.8 1.25 Continuous use Yes Yes No No Yes Transfer pumps PC/Peri Peri NA NA PC Metering pumps PC/Peri PC/Peri PC/Peri Peri PC Interchangeable cassette Yes Yes Yes No Yes Typical PlanetPak delivery unit 25L 25L NA 1L 25L Other delivery packaging IBC/LN Drum/LN LN LN NA PC PUMP RATE (cc/rev) 0.09 0.28 0.87 2.6 5.2 RECOMMENDED OUTPUT RANGE (g/min) 0.9 to 9 2.8 to 28 8.7 to 87 26 to 260 53 to 520 PC PUMP MAX (g/min) 18 56 174 520 1040 CONTROLLER CMG 3000 FlexG CMG 5000 CMG 6000 Application Injection Molding Extrusion Melt Injection Volumetric/gravimetric V V (weight data) V/G V/G Data export/network No Yes Yes Yes Touch screen No Yes Yes Yes Multiple log-in levels No No Yes Yes FlexCart Model S Optional Yes No Mini Model S No Yes No Micro Yes No Yes No Nano Yes No No No Melt Injection No No No Yes Choosing a progressive cavity pump for transfer or metering Choosing the controller MAKING THE RIGHT CHOICE Here are the options which should be considered for an informed choice of combinations: (Note: LN = 3, 5 & 10L molded container PC = Progressing Cavity Pump Peri = Peristaltic Pump) Avient can provide support and assistance on every aspect of liquid color and additive processing.

Processing parameters and part design can influence the residual stresses in a part; higher melt and mold temperatures with longer cooling times can reduce residual stress during molding, whereas coring features, bosses, and round/oval holes (when necessary) can help alleviate internal stresses around part corners. Briefly, ASTM D638 Type I tensile bars were prepared for each material by injection molding using a 2-stage setup procedure, applying a hold pressure of 60% of the injection pressure once a 98% full part was achieved. All materials were pre-dried and molded to the specifications provided by the manufacturer.

Proposition 65)); (vi) be non-infringing as shipped by Supplier, with respect to patents, trademarks, copyrights, trade secrets and all other intellectual property rights of third parties in the country of delivery; and (vii) be in full and strict conformance to any Certificate of Analysis (“COA”) or Certificate of Conformance (“COC”) provided by Supplier in connection with a particular shipment of Goods. In addition, Supplier warrants that all Certificates of Origin for the Goods shall be provided to Avient on a timely basis and shall be accurate and complete. Upon the request of Avient, Supplier shall deliver promptly to Avient certificates of insurance made out by the applicable insurer(s) or their authorized agents for the insurance required under this Section (the “Required Insurance”) and for any material policy amendments thereto.

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The coarse ground material was then crystallized in a vacuum oven at 160°C before drying the material at 160°C for approx. 4 hours within a PET drier • Plaques were then molded on a BOY XS and 10 of these were kept after each cycle, to take color measurements • This process was then repeated until 5 heat cycles had been completed RESULTS FOR RECYCLABILITY METHOD-1 As plaques were produced while the material went through five different melt heat histories, plaques were produced at each cycle and L*, a*, and b* values were measured. To do so the following procedure was carried out: • Preforms were produced by dosing 0.09% of Avient Fortis Amber-1 and 4% of our nylon- based oxygen scavenger Amosorb SolO2-2 • Preforms were ground down to a coarse granule size (~2mm) using a Retsch mill • The coarse ground preforms were crystallized in a vacuum oven at 160°C before drying the material in a PET drier at 160°C for approx. 4 hours • This material was then injection molded and blown into bottles with a) 50:50 dilution with Virgin PET with no color and b) 50:50 dilution with Virgin PET + Fortis Amber-1 at 0.045% Figure 2.

Tight batch-to-batch tolerance • Wide Dk range from 2.6 up to 23 • Lower weight and better impact resistance than ceramics • Isotropic material suits well for narrow beam widths (less than 0.2°) • Injection molding for complex shapes • Low cost mass manufacturing Whether we are talking about portable satellite terminals or stationary land stations, the material requirements are alike: reliable, low loss materials with low manufacturing costs, light weight and the ability to form complex shapes. Unlike ceramics, PREPERM patch antennas are not brittle and can be mass produced by injection molding.

Avient determined that the manufacturer required a material with a unique combination of properties, including: • Processing ease – high flow rate, ability to fill multi-cavity molds, thin-wall capabilities • Superior toughness – strength and durability to ensure dimensional integrity of the part • Repeatable performance – consistent conductivity for accurate measurement of liquids While several off-the-shelf compounds were evaluated, a new formulation was developed to meet the manufacturer’s specific needs as well as provide signifi cant benefi ts in reduced cycle time, increased production and reduced scrap rate. Increased Production: Additionally, the high flow properties of the Trilliant HC formulation allowed for an increase in the number of cavities in the mold, resulting in a machine cost-per-part savings of over 30%