Two Side White Coated Duplex Paper Board White back In RollsAvailable Grammage of our White Back 250gsm300gsm350gsm400gsm450gsm500gsmAdvantages: 1)-High stiffness, support for carton lamination, die-cutting.2)-Perfect surface coating, surface smoothness, stable ink absorbability makes excellent printing result.3)-Suitable for 4/6/8 or any color and full color high speed printing.4)-Widely used for tissue paper boxes, carton lamination, tool boxes, toy boxes.Type: Sheets and Rolls Roll size: 55cm, 65cm, 102cm, 79cm, 105cm,110cm ….etc Package:Rolls wrapped with PE film, then on strong wooden pallets or without pallets. Container Loading:20'ft container: around 16 tons for rolls40'ft container: around 25 tons for rollsBusiness Term:Payment: T/T, L/C at sight Delivery time: 20days after down payment Minimum order: 20tons Samples: Free A4 size sample available, freight collect. TECHNICAL DATA Grammage(gsm)250gsm~500gsmStiffness (CD)(mN.m)≥2.7~13.4Brightness(%)≥80Bending Test (CD)times≥15Printing Surface Intension(m/s)≥1.5Ink Absorbency(%)18.0~32.0Moisture(%)6.4~9.6