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The PE film is very thin and transparent. The natural kraft color of the paperboard remains visible through the coating. A slight gloss or smoother surface indicates the transparent barrier film, but the inside does not need to become white.
No. Ordinary paperboard is absorbent and does not provide the main water and oil barrier. In a PE-coated cup or bowl, the thin polyethylene film protects the fibers from direct contact with liquids and grease.
Bioleader®’s confirmed standard PE-coated paper cup structure is manufactured without intentionally added PFAS grease-proofing agents. The liquid barrier is provided by conventional PE film. A representative white paper cup tested by SGS showed the listed targeted PFAS as not detected below the stated method detection limits.
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