Composite Masterbatch Granules Containing Reprocessed Polyethylene Terephthalate (PET) Derived from Recycled Pet Bottles, Method for Making the Same, and Use of the Same in Foamed Shoe Material
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United States of America Patent
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Issued Date -
Feb 10, 2022
app pub date -
Aug 6, 2020
filing date -
Aug 6, 2020
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Abstract
Disclosed herein are composite masterbatch granules containing reprocessed PET derived from recycled PET bottles, a method for making the same, and a use of the same in a foamed shoe material. Recycled PET is melted and mixed with EVA and a compatibilizer until they form a new polymer alloy through chemical modification, and the polymer alloy is processed with a high-torque extruder to produce the composite masterbatch granules. The composite masterbatch granules can be further mixed with EVA and a thermoplastic elastic material in order to make a shoe material by a foaming and molding process. The disclosure is intended to contribute to the recycling and reuse of waste PET so as to reduce carbon dioxide emissions, protect the environment, and lower the demand for virgin PET polymer materials and hence for petrochemical materials in general.
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