Westrock Review, Is Westrock Non-Toxic?
PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.
Across 5 graded products, Westrock averages Poor (25/100). On disclosure, the brand says nothing publicly about PFAS. None of its products grade Good or better yet. Grades are model-based estimates, not lab results.
Graded and flagged Poor and Bad, we’d swap these
Westrock
4 1/4" x 6 1/2" White Bakery Bag w/ Clear Front
paper with grease-resistant coating (type unspecified)
PFAS
Westrock has not disclosed whether the coating uses fluorinated PFAS, non-fluorinated…
Bacterial growth in damp storage
Paper bags absorb moisture and can harbor mold or bacterial growth if stored in humid…
Wait for Westrock to disclose coating chemistry or provide PFAS-free certification.
⚠Waterproof or stain-proof treatment
Westrock
Grease-Proof 4 lb. HDPE Graphic Bakery Bag - 5"L x 3"D x 11"H
HDPE plastic with grease-proof coating (composition unspecified)
PFAS
Grease-proof food bags commonly use PFAS-based compounds; Westrock has disclosed no…
Coating degradation and microplastic migration
Polymer coatings degrade with age, moisture, and temperature cycling. Use-wear in bakery…
Thermal instability of coating under heating
Placing warm baked goods into the bag may soften or partially dissolve the grease-proof…
Allergen or food-residue contamination from recycling stream
If this bag uses recycled HDPE, prior food contact history is unknown. Bakery bags…
Exercise caution as grease-proof food bags commonly use PFAS coatings; Westrock provides no transparency.
⚠Waterproof or stain-proof treatment
Westrock
#9 White 5.5x4.5" Grease Resistant Bags (2,000/Case)
Paper/kraft with grease-resistant coating (type unspecified)
PFAS
Westrock has not disclosed whether the coating is PFAS-based. Industry standard for…
Coating breakdown and microparticle migration
Grease-resistant coatings on paper can degrade with age, moisture, or mechanical stress.…
Formaldehyde / VOCs
Some grease-resistant coatings release volatile compounds during manufacture or storage.…
Wait for Westrock to disclose coating chemistry; grease-resistant food packaging commonly contains PFAS.
⚠Waterproof or stain-proof treatment
Westrock
Kraft Paper Bakery Sandwich / Cookie Bag 8 1/2 " x 1" x 6 1/2" Grease Resistant Bags. for Sandwiches, Pastry Food Snack Wraps Baggies Sleeves 1000 pc.
Kraft paper with grease-resistant coating (type unspecified)
Grease-resistant coating migration (unknown chemistry)
Westrock has not disclosed whether the coating contains fluorinated compounds (PFAS) or…
Thermal degradation of coating
If the grease-resistant treatment is polymer or fluorinated, heating (microwave, oven…
Wait for Westrock to disclose the grease-resistant treatment as PFAS risk remains uncertain.
⚠Waterproof or stain-proof treatment
Westrock
Bag,Ppr,Sandwh,Grs Resist Ct
paper with grease-resistant coating (unspecified)
PFAS
Grease-resistant paper coatings frequently use PFAS compounds; Westrock has not disclosed…
Coating degradation and particle release
Paper bag coatings can chip, peel, or fragment with age, moisture exposure, or thermal…
PFAS
Some grease-resistant coatings use food-grade mineral oil or silicone, which carry low…
Confirm the specific grease-resistant treatment with Westrock before purchase; paper food packaging often uses PFAS coatings.
⚠Waterproof or stain-proof treatment
Every grade uses the same public rubric. How grades work →