In 1999, the Recycled Paperboard Technical Association (RPTA) and the American Forest & Paper Association jointly published a document, Guidance for Industry on The Use of Pulp from Reclaimed Fiber as a Component of Paper and Paperboard Products for Food Packaging under 21 C.F.R. 176.260. The Guidance identified steps appropriate to ensure compliance with FDA requirements. To complement the Guidance, RPTA issued the first edition of its Chemical Testing Protocol for Food Contact Paperboard Made from Recycled Fiber (RPTA Protocol) as a tool to help manufacturers of recycled paper, paperboard and containerboard identify substances in recycled fiber packaging substrates and determine the regulatory status of those substances.

Since then, the RPTA Protocol has evolved into a comprehensive program to ensure that recycled paperboard and containerboard can be the first choice for food packaging.

The RPTA Comprehensive Program

In January 2018, RPTA rolled out its most recent update of the program to ensure manufacturers of recycled paperboard and containerboard used in food-contact applications can continue to assure compliance with FDA requirements. The Program has been enhanced to comprehensively address the various regulatory requirements under the FDA statutory authority that apply to recycled paperboard and containerboard use in food packaging. The Program includes processes to address:

Use of reclaimed fiber in paperboard intended for direct food contact as stipulated in 21 CFR 176.260

Control of sources of recovered fiber

Use of additives suitable for food contact as stipulated in 21 CFR176.170 and 21 CFR 176.180

Implementation of microbiological testing to assure that contamination of the surface of the paperboard or containerboard is reduced to as low as practicable and the recycled fiber packaging substrate is free of pathogens

Implementation of Good Manufacturing Practices which include a variety of processes to assure the manufacturing of the packaging does not render the package unfit for food

Implementation of a chemical testing protocol for quality control end-testing

Maintenance of adequate company records

RPTA Chemical Testing Protocol

From the beginning, RPTA developed the chemical testing protocol through the collaborative efforts of industry experts, outside consultants, and experts in the area of health-risk assessment. It addresses chemicals that are the subject of FDA regulations for food packaging and California's Proposition 65 with regard to unintentional chemical constituents.

The RPTA Protocol contains a list of chemicals developed in cooperation with leading food safety industry experts, along with their corresponding health risk-based allowable concentrations. The Protocol establishes a testing regime to evaluate levels of unintended chemical constituents in paperboard or containerboard and contains information on how to use the test data. In addition, it establishes a process for further evaluations should test results deem additional study is needed.

RPTA selects chemicals for inclusion in the Protocol based on the potential for their presence in recycled fibers because they are common industrial and commercial contaminants. Classes of chemicals contained in the list include:

Heavy Metals

Pesticides

Phthalates

Polyaromatic Hydrocarbons

PCB's

Volatile Organic Compounds

Semi-Volatile Organic Compounds

The list of chemicals contained in the Protocol is not static. Based on information from the U.S. Environmental Protection Agency, FDA, the US Department of Agriculture and other government and quasi-government entities, RPTA periodically revises the list to include new chemicals which could potentially be found in recycled fiber streams and have potential health effects. In addition, the allowable concentrations are subject to change as new information about any health effects becomes available. RPTA monitors changes to the underlying toxicological data used to develop the allowable concentrations for the chemicals, and updates the information contained in the Protocol as necessary. The 2018 Comprehensive Program is the sixth update to the original Protocol document.

RPTA Comprehensive Program Certification

In 2017 the RPTA began a program to certify each of its member mills was implementing the comprehensive program fully and consistently. RPTA partnered with NSF to develop a certification scheme and to provide auditing services. The audit is a robust, onsite review of member mill procedures and documentation ensuring proper, thorough and consistent adherence to all aspects of the comprehensive program.

The RPTA certifies that each member mill certificate holder has processes in place to produce product which meets the stipulations of the RPTA Comprehensive Program for Food-Contact Paperboard Produced from Recycled Fiber and certifies that the management and manufacturing systems of the certificate holder have been audited and found to be in accordance with the requirements of Recycled Paperboard Technical Association: Comprehensive Program for Food-Contact Paperboard Produced from Recycled Fiber.

Conclusion

The Comprehensive Program for Food-Contact Paperboard and Containerboard Produced from Recycled Fiber is a confidential and proprietary tool that helps RPTA members comply with FDA's requirements for manufacturing food-contact packaging. The RPTA Comprehensive Program is a living document. RPTA draws on the knowledge of recognized experts in the field of risk assessment, authoritative scientific literature, and commonly accepted safety assessment techniques to present a methodology for achieving this purpose.