Performance Reheating rPET, so that it can be molded into a bottle preform shape, also decreases the plastic’s intrinsic viscosity (IV) due to a decrease in polymer chain length. Colored PET—As manufacturers look to transfer packaging away from less recycled polymers to PET, there is an expectation that color will remain an important brand differentiator on the shelves. One common challenge with using rPET bottles is the breakdown of the polymer chains that occurs as the material is heated and remelted during processing.

As an alternative to multilayer preforms, this additive can easily be added to PET using a single-stage process that gives identical light blocking performance at a lower machinery cost. With three PET production plants, the Company manufactures over 260,000 tons of PET resin annually and more than one billion preforms for food and beverage containers. About PolyOne PolyOne Corporation, with 2015 revenues of $3.4 billion, is a premier provider of specialized polymer materials, services and solutions.

When added to rPET and PET preforms and bottles, SmartHeat RHC helps to: Polymer Additives Our cutting-edge polymer additives can add function, performance, even profitability

Because they are able to use conventional gloss preform and blow molds, there is no need for customers to create new tooling. PolyOne Corporation, with 2013 revenues of $3.8 billion, is a premier provider of specialized polymer materials, services and solutions.

Back Home // Products // Polymer Colorants // Liquid Color Concentrates and Dosing // ColorMatrix™ Optica™ Toners For PET ColorMatrix™ Optica™ Toners & Colors added to PET resin, preforms and rPET corrects and reduces the yellowing that occurs during the recycling process.

The proprietary ColorMatrix technology has been shown to deliver superior energy saving at bottle blowing whilst at the same time imparting an attractive light blue-shaded color to the preforms (and bottles) without contributing to bottle haze. Joule RHB products have also been found to have a synergistic and beneficial processing effect with use of rPET, not only in masking the color during recycling but also in enabling high levels of rPET to be successfully incorporated in preforms. The additive is not soluble in MEG, but is very thermally heat stable and at the low ppm addition levels commonly used has no measurable impact on the polymer process other than that coming from the blue tint introduced into the polymer.

Such recipes define the overall power input as well as the lamp configuration and other important process variables consistent with the resin and preform/ bottle design. Such advice, for example how to set up blow molding machines, is not equipment specific and therefore ColorMatrix would always recommend using local or expert technicians in addition to following best practice points listed below; • Preforms should be conditioned for minimum 24 hours prior to blowing • Preforms should always be used in a FIFO manner (First In, First Out) • Octabins of preforms should be segregated and blown per resin type, i.e. not mixed with other resins • A preform traceability system should be in place such that any process upsets can be quickly followed up and corrected • Enhanced QC preform checking resources for bottle distribution, aesthetics and integrity should be on-hand during the performance optimization trials • Prior to any process optimization, the blowing machine performance should be verified as being within normal i.e. accepted standard ranges and all important components and control features are working satisfactorily. CAUSE AND EFFECT DIAGRAM Methods Machines Materials Manpower energy saving during SBM Maintenance instructions Operating instructions Operator Job spec NIR Lamps SBM Type/Design vPET reheat content vPET formulation rPET blend/quality Temperature recording Temperature measurement probe External temperature Inappropriate Manual Training New Alignment Same Throughput Too many tasks Time conflict Age/intensity variable Set up conditions Configuration - When starting to process a new resin, first run through new preforms for 15 minutes at ‘standard’ conditions to establish steady state conditions prior to any process optimization - Slowly start to reduce preform blowing temperatures until failures are present (visible pearl internal wall or pearl feet) - Increase blowing temperatures until defects are eliminated - QC check bottle quality for acceptance versus established tolerances - Change the power consumption profile in the ovens for early heat and longer sink times but ensure overall temperatures do not exceed cold crystallization temperature - Repeat temperature reduction stage and then defect elimination stage to test if further optimization is possible - Recheck QC bottle quality for acceptance versus established tolerances - Log all process parameters and create new specific ‘recipe’ for future use

Polymer Additives

PACKAGING CONVERTER R P E T W A T E R B O T T L E S • Provided the only reheat additive with APR Critical Guidance & Bottle-to-Bottle Recognition • Allowed increased use of rPET with no negative impact to performance or aesthetics • Enabled preforms to heat more quickly to improve cycle times and reduce energy usage • Set up onsite dosing equipment for customer at multiple locations and provided technical support nationally ColorMatrix™ SmartHeat™ RHC WHY AVIENT? https://www.avient.com/products/polymer-additives/reheat-additives-pet/colormatrix-smartheat-rhc

Its benefits are realized only with transparent preforms in a 2-stage injection stretch blow-molding process. Once incorporated into the preform, no further action is necessary. Performance can be observed and supported during the bottle blowing process through optimization of the lamps, resulting in decreased energy consumption due to increased absorption of heat into the preform.