Solid Bleached Sulfate (SBS) paperboard is made from bleached virgin wood pulp. Usually, it comes coated with a naturally occurring mineral called kaolin clay to help with surface smoothness for printing. Additionally, SBS paperboard can be coated with a thin plastic liner to create a food-safe moisture barrier that helps preserve odors and flavors, making this material ideal for packaging food, cosmetic and pharmaceutical products. SBS paperboard comprises 20% recycled materials and 80% freshly harvested wood chips which are chemically processed and bleached, giving it a brilliant white color.
Paperboard Thickness and Grammage Conversion Table：
| Basestock Properties (Units) | Nominal Basis Weight (GSM) | Caliper (Inches) | Thickness (Microns) | Commonly Used For |
| 12pt | 250gsm | 0.012” | 305μ | Bags |
| 14pt | 275gsm | 0.014” | 356μ | Takeout Boxes, Cups |
| 16pt | 300gsm | 0.016” | 406μ | Heavy duty bags, Takeout Box |
| 18pt | 350gsm | 0.018” | 456μ | All box packaging |
| 24pt | 400gsm | 0.024” | 610μ | Heavy duty boxes |
| 28pt | 527gsm | 0.028” | 710μ | Very heavy duty boxes |