March 22, 2021
To be sure of consistent quality in the finished bottle, you need consistency in raw materials, so accuracy is critical in blending of PET materials for the production of preforms. Virgin PET, in-house regrind and post-consumer reclaimed material, colorants and additives need to be precisely metered and thoroughly mixed. If you use reclaimed PET in yourpreforms, you probably have a very specific target percentage. Below that target and they won’t meet environmental and economic commitments. Over the target and the blend may need to be recrystallized or you risk having the amorphous regrind agglomerate (clump together) in process equipment. Therefore, accuracy to within 0.5% is required. An improved control algorithm intelligently analyzes dozens of weight readings in a matter of milliseconds, filtering out electronic noise and the effects of vibration. After every dispense cycle, the control adjusts automatically for minor variations in dispensing, as well as for changes in resin bulk density and particle geometry. The mixing chamber is totally enclosed, ensuring that all pellets and minor ingredients are accounted for. For PET preform producers who have special requirements, TrueBlend units can also be customized to include such unique options as:• Flow inducers in material bins.• Optional vertical augers, which operate whenever the dispense valve is open, ensure that even difficult-to-flow materials like PET bottle regrind flakes are fed smoothly to the weigh bin. No material hang-ups. Accuracy in Blending and Feeding High -temperature blending components– including load-cells, level sensors and air cylinders, are specified for their ability to stand up to temperatures of 350°F (175°C) and higher. Electronic components are isolated from elevated temperatures. This prevents premature failure or generation of erroneous data that results in diminished mixing accuracy. Now you can confidently blend high levels of regrind direct from the crystallizer or you can dry preform materials before they are blended, preventing separation of ingredientsin the drying hopper.
March 21, 2021
A preform is an intermediate product that is subsequently blown into a polyethylene terephthalate (PET) container. Preforms vary in neck finish, weight, colour and shape, and are specifically designed to meet the needs of customers in different market segments. Preforms are manufactured from polyethylene terephthalate (PET), so they are called PET preforms. They are produced using a highly-accurate injection molding process on equipment from the leading world vendors. Preform weight depends on the end container’s desired volume. Preforms can be single-layer or multilayer. Barrier preforms provide additional benefits and increased beverage shelf life, thanks to a special layer embedded in several layers of polyethylene terephthalate. Plasteam Packaging offers a full assortment of polyethylene terephthalate (PET) preforms for packaging, transporting and storing drinking water, mineral water, carbonated beverages, juices, nectars, baby food, dairy products, beer, low-alcohol and alcoholic beverages up to 40% abv, edible oil, mayonnaise, ketchup, sauces, household and cosmetics products In addition to standard preforms, Plasteam Packaging custom preforms tailored to individual customer requirements. To choose the best packaging option for your needs, contact us. We will help you make a suitable selection based on your equipment, the complexity of the shape of the PET bottle, and your special requirements.