21 CFR § 112.116
What measures must I take when using food-packing (including food packaging) material?
June 25, 2020
(a) You must use food-packing material that is adequate for its intended use, which includes being:
(1) Cleanable or designed for single use; and
(2) Unlikely to support growth or transfer of bacteria.
(b) If you reuse food-packing material, you must take adequate steps to ensure that food contact surfaces are clean, such as by cleaning food-packing containers or using a clean liner.