Corrugated plastic sheet offers several advantages over corrugated paper, solid plastic sheet, and other sheet materials. It is light weight, yet tough and abrasion resistant. Polypropylene has excellent chemical resistance and is unaffected by water.It will not degrade in moist or wet environments. Custom designed, plastic, break-pack boxes can be substituted for paper without changes to distribution operation. Once empty, they knock down flat and return to distribution center for reuse. Suitable for companies with closed loop distribution networks, corrugated plastic offers better stacking strength and product protection than paper.