Mill Operations: Arkansas Mill FAQs
An innovative leader in linerboard
Q: Do rolls of containerboard have a shelf-life?
A: While both liner and medium are a stable product when stored in a clean, dry environment, it is recommended that rolls be converted within one year to prevent the compromise of any quality characteristics.
Q: What is basis weight?
A: Basis weight is defined as the weight of paper over a given unit area; i.e., the basis weight for 42#Kraft Liner would be expressed as 42 pounds per 1000 ft2.
Q: What is Fourdrinier?
A: The first continuous papermaking machine, invented by Nicholas Louis Robert in the late 1700s. The machine consists of a continuous screen or wire, which allows drainage leaving the fibers supported. The machine was named after the brothers who financed its development. The Fourdrinier remains the basic papermaking method used today.
Q: What is the Winder?
A: The machine that slits and rewinds into rolls, the paper coming from the paper machine reel.
Q: What is linerboard made from?
A: Linerboard is made from wood fibers composed of cellulose. Cellulose works well in the papermaking process due to hydrogen bonding. This bonding results in the fibers being attracted to each other, holding tightly together forming a web.
Q: What is Kraft?
A: A papermaking process also known as the sulfate pulping process, used to manufacture linerboard. The kraft process was invented by C.F. Dahl in 1884. The chief characteristics of Kraft linerboard are its strength and bending qualities.