Packright · Pizza Boxes
MT Products White B-Flute Cardboard Pizza Box 10" x 10" x 1.75
Lower concern. Standard corrugated cardboard pizza box with no evident PFAS-prone coatings.
MT Products' standard white B-flute pizza box is uncoated corrugated cardboard, a baseline lower-concern material for food contact. No greaseproof or water-resistant coating is documented, which means no obvious PFAS trigger.
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virgin kraft paper with B-flute corrugated core
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
food packaging is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
This box is virgin kraft paper (unrecycled cellulose fiber) with a B-flute corrugated core, a standard construction for food packaging. Virgin kraft avoids contaminants from recycled feedstock but requires bleaching and sizing processes. The corrugated structure provides structural integrity without added plasticizers or heavy reinforcement coatings. B-flute (1/8-inch wave) is the thinnest corrugation grade, balancing rigidity and material cost for single-use foodservice.
The brand's record and disclosure
Packright (MT Products) is a private-label supplier with minimal public sustainability or safety disclosures available. No formal third-party certifications (FSC, SFI) or formal recalls tied to chemical contamination are on record for their cardboard pizza boxes. The company does not publicly disclose bleach type, sizing agents, or ink composition, which is typical for commodity corrugated suppliers but limits transparency. No established pattern of regulatory violations or consumer complaints specific to this product line has been documented.
How it compares in its category
Standard uncoated corrugated pizza boxes represent the baseline safety profile in foodservice packaging; they perform identically to competitors (Domino's, Papa John's house stock). Coated or clay-laminated boxes (moisture barriers) carry slightly higher chemical complexity but are not used here. Recycled-content alternatives carry theoretical contamination risk but also lower production chemical inputs. This virgin kraft box sits in the middle: simpler than coated variants, more transparent than recycled stock.
If you buy it
Use boxes for their intended purpose: room-temperature or warm pizza transport within 2-3 hours. Do not use for long-term food storage, as corrugated absorbs grease and moisture. Avoid prolonged oven contact above 400F, which can cause paper fiber breakdown and ash transfer. Store in a dry location; damp storage encourages mold and microbial growth on the box surface, which poses food contamination risk if transferred to food during opening.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Mineral oil and printing ink residues
Uncoated corrugated pizza boxes typically use soy or mineral-oil-based inks for branding. Food-grade ink compliance is not guaranteed without explicit certification; migration of ink components into grease-heavy foods like pizza is plausible over extended contact.
Bleach residues and chlorine compounds
Virgin kraft paper is bleached to achieve whiteness; no public data on Packright's bleach type (chlorine-based vs. oxygen-based). Residual chlorine or dioxin precursors in kraft are uncommon but have been documented in some suppliers' stock.
Mold and microbial growth on storage
Uncoated corrugated is hygroscopic and supports mold proliferation in humid conditions. Moldy cardboard in contact with food poses mycotoxin and pathogenic bacterial risk, particularly if boxes are stored damp before use.
Fiber shedding and microparticulate contamination
Worn or moisture-degraded corrugated can release paper fibers and coating particles into food. Risk increases if boxes are reused, crushed, or stored long-term; single-use minimizes this exposure.
Heavy metals in mineral fillers
Kraft paper may contain trace kaolin clay or calcium carbonate fillers; no recalls or reports of lead/cadmium contamination in Packright corrugated products are documented. Standard mill testing is assumed.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
More pizza boxes grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.