Polyester bottle polymer, polyester plastic waste, and waste fiber polymer can be recycled into polyester fiber that can be used in carpets, filling and insulation material, nonwovens, and apparel. One of the shortcomings of processing these materials is the uncertainty of the color of the source material. By using optical brighteners, the value of the recycled materials can be significantly enhanced by providing a more uniform color. OB-3, with its bluish cast, is particularly useful in overcoming yellowness that can vary widely from one shipment to the next. Optical brighteners are very effective in improving the appearance of the polymer or fiber.
Standard packages are nylon-lined fiber drums.
The finished polymer shall contact foods only of the types identified in Table 1 of Sec. Eastobrite OB-3 does not have FDA clearance at this time. Material Safety Data Sheets providing safety precautions that should be observed in handling and storing Eastman products are available online or on request. You should obtain and review the available material safety information before handling any of these products. If any materials mentioned are not Eastman products, appropriate industrial hygiene and other safety precautions recommended by their manufacturers should be observed.