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Corrugated Signs everything you need to know to become a reseller.

PrintSprout
PrintSprout September 3, 2025
2 min read

Corrugated Signs (General Category)

  • Definition: “Corrugated” simply means a material that has a fluted, layered interior for strength and rigidity.
  • Materials Used: Corrugated signs can be made from plastic (like polypropylene) or cardboard/paperboard.
  • Applications:
    • Corrugated plastic signs are weatherproof, durable, and typically used outdoors.
    • Corrugated cardboard signs – lightweight, cost-effective, often used indoors for displays or temporary signage.

So, “corrugated signs” is a broad umbrella term that includes more than one type of material.

Coroplast Signs (Specific Brand/Type)

  • Definition: Coroplast is actually a brand name (like Kleenex for tissues) that has become synonymous with corrugated plastic sheets.
  • The trademark for “Coroplast” (the material used for signs, not the signs themselves) is owned by Coroplast, LLC.
  • Material: Always corrugated polypropylene plastic.
  • Applications: When people say “Coroplast signs,” they’re usually referring to the outdoor, waterproof, plastic corrugated signs you see for:
    • Real estate yard signs
    • Political campaign signs
    • Outdoor event advertising
    • A-frame inserts

The Key Difference

All Coroplast signs are corrugated signs, but not all corrugated signs are Coroplast.

  • Corrugated = the style of construction (fluted structure).
  • Coroplast = a specific brand/type of corrugated plastic material.

If you’re talking about outdoor, durable, waterproof signs, Coroplast (corrugated plastic) is the precise term. If you want to include indoor cardboard displays in the discussion, “corrugated signs” is the broader category.

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