Polytech Celebrates Another Milestone: SSP-Based rPET Process Receives FDA No Objection Letter, Enabling 100% Food-Contact Applications
On June 4, 2025, Polytech officially received a response from the U.S. Food and Drug Administration (FDA), granting a Non-Objection Letter (NOL) for its Solid-State Polymerization (SSP) process used in the production of recycled PET (rPET)
Non-Objection Letter (NOL) issued by the U.S. Food and Drug Administration (FDA)
The NOL obtained this time specifies that rPET processed using Polytech’s SSP technology, under application conditions B–H, can be used 100% in the production of packaging containers intended for contact with all types of food. This serves as authoritative recognition of Polytech’s technical approach in ensuring both the food safety and high performance of rPET
The Key Role of SSP: Core Technology at Polytech
Solid-State Polymerization (SSP) is the core process step for enhancing the quality of recycled PET (rPET). It achieves this by:
- Increased Molecular Weight and Thermal Stability:
Restores material performance to a level comparable to virgin PET. - Efficient Removal of Impurities:
Significantly reduces residual low-molecular-weight contaminants in rPET (such as acetaldehyde and volatile organic compounds), ensuring material purity. - Assured Application Reliability:
Enables rPET to be safely used in demanding food-contact scenarios, including high-temperature filling and long-term storage.
Why FDA NOL Matters
“The FDA maintains an extremely rigorous review process for food-contact recycled materials. A Non-Objection Letter (NOL) is not only a critical market entry certificate but also focuses heavily on verifying the effectiveness of the entire recycling process—particularly advanced decontamination and performance enhancement technologies. Due to its exceptional ability to reduce residual risks and ensure product consistency, Solid-State Polymerization (SSP) has become a ‘standard’ technology among leading global companies seeking FDA NOL approval.
Polytech’s Continuous Breakthroughs
“Previously, Polytech successfully obtained an FDA Non-Objection Letter (NOL) covering the full process from washing to pelletizing and solid-state polymerization (SSP) under application conditions C–G. The latest NOL, granted specifically for the SSP process under conditions B–H, serves as further strong validation of Polytech’s core technological innovation and process reliability.
Looking Ahead
Obtaining the FDA Non-Objection Letter (NOL) marks a significant milestone in Polytech’s technological development. The company will continue to focus on the research and development of high-standard, globally competitive, and high-value recycling and washing solutions for recycled materials. Polytech is committed to empowering the green and low-carbon transformation of the global food, beverage, and packaging industries with stronger and safer technological capabilities.
