Stone Paper Technology — the material behind 3RBOX packaging
Stone paper material is typically made from calcium carbonate-based minerals combined with selected resin materials. Unlike wood-pulp paper, it does not rely on trees as the primary raw material. The formulation can be adjusted based on strength, flexibility, water resistance, and application needs.
What stone paper is made of
The primary raw material is calcium carbonate-based mineral — sourced from stone such as marble, calcite, coal gangue, quartz sand, and similar naturally available materials. Fine mineral powder is combined with resin binders (typically PE, PP, or PVC) to form a sheet material.
Typical composition: approximately 65%–80% mineral content and 20%–35% resin, depending on performance and application. This ratio can be tuned for strength, flexibility, printability, or regulatory needs.
The finished sheet is converted into stone paper rolls, then into corrugated sheets, and finally into finished corrugated boxes.
From quarry to finished corrugated box
- 1Quarry minerals
Naturally available calcium carbonate-based stone.
- 2Fine powder
Ground into fine calcium carbonate powder.
- 3Resin selection
PE, PP, or PVC selected by performance need.
- 4Stone paper material
Powder + resin processed into raw material.
- 5Stone paper roll
Rolled sheet ready for conversion.
- 6Corrugated sheet
Converted into stone paper corrugated sheets.
- 7Finished box
Cut, formed, printed, and shipped.
Why it works for wet and cold chain applications
Water-resistant by material
Mineral + resin composition does not disintegrate on contact with water like cellulose paper.
Moisture-stable
Holds structural integrity in refrigerated humidity, condensation, and long transit.
Application-tuned formulation
Ratio, thickness, and structure adjusted to your logistics environment.
Careful sustainability language
Technology FAQ
Need Waterproof Packaging for Seafood, Produce or Cold Chain Logistics?
Send us your product type, box size, quantity, loading weight, printing requirements, and shipping environment. Our packaging team will recommend a suitable 3RBOX stone paper corrugated solution.