3096 Chapter 25 



PAPERBOARD 



Unbleached kraft paperboard is made from a furnish containing not less 

 than 80 percent wood pulp produced by the kraft sulfate process. 



Unbleached linerboard is kraft paperboard used as facing material in corru- 

 gated or solid fiber boxes. It includes solid unbleached kraft linerboard made on 

 fourdrinier or cylinder paper machines, mottled white linerboard, and clay- 

 coated unbleached kraft linerboard. 



Bleached linerboard is solid bleached paperboard made on fourdrinier or 

 cylinder paper machines, manufactured for use as facing material when combin- 

 ing paperboard for conversion into corrugated or solid fiber boxes. 



Recycled linerboard is paperboard containing less than 80 percent virgin 

 kraft wood pulp and used as facing material when combining paperboard for 

 conversion into corrugated or solid fiber boxes. 



Corrugating medium is principally hardwood semichemical pulp used as 

 fluting material for combination with paperboard to make corrugated boxes. 



Corrugating medium (recycled) is paperboard containing less than 75 per- 

 cent virgin woodpulp and used as fluting material. 



Container chip and filler board is recycled paperboard manufactured as a 

 filler for solid fiberboard for conversion into solid fiber boxes, or for container 

 chipboard. All chipboard weighing less than 26 pounds per thousand square feet 

 is manufactured for use in facing corrugated, solid-fiber, or single-faced prod- 

 ucts used for interior packing, e.g., pads, partitions, dividers, layers, and 

 cushioning. 



Unbleached folding paperboard is manufactured for conversion into folding 

 cartons and beverage carriers; it may be clay-coated unbleached kraft, or un- 

 bleached kraft backed with bleached kraft lining. It may also contain pulp other 

 than kraft. 



Recycled folding paperboard is manufactured with bending quality for 

 conversion into folding cartons, including those of unlined chipboard, and those 

 kraft lined, or white lined and clay coated. 



Recycled set-up paperboard has non-bending specifications for conversions 

 into rigid or set-up boxes, including those of plain chipboard, or those newslined 

 or white vat lined. 



Other paperboard (unbleached) includes all unbleached kraft paperboard 

 whose end use is not otherwise classified, e.g., paperboard for a filler in solid 

 fiberboard to be fabricated into a shipping container, table, drum, can, file- 

 folder tab, or automotive panel. 



Solid bleached packaging paperboard is made for use in packaging from a 

 furnish containing not less than 80 percent virgin bleached chemical wood pulp. 

 (Bleached bristol boards not manufactured for packaging are described under 

 PAPER). 



