Plastic honeycomb encompasses lightweight, cellular-core panel materials manufactured from thermoplastic resins — most commonly polypropylene, polycarbonate, or PETG — formed into hexagonal or over-expanded cell geometries through extrusion, thermoforming, or corrugation-bonding processes, and used as structural sandwich-core elements in interior cabin components, flooring, and secondary structures where a high stiffness-to-weight ratio is required.
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