Coated duplex board paper making machine

Duplex board paper front is white and smooth, the back is mostly gray,Duplex board paper
is mainly used for one side color printing to make carton for packaging, or for design,
handmade products.This coated duplex board paper making machine mainpy produce
duplex board paper with 170-450g/m2.

Coated duplex board paper making machine main specification

Product name Coated duplex board paper making machine
Trimmed width 2400-6600mm
Production capacity 200-1400t/d
Basis weight 170-450g/m2
Operation speed 200-600m/min

 

The duplex board paper is made by copying the surface pulp and each layer of bottom pulp on
multi-cylinder coated duplex board paper making machine or fourdrinier coated
duplex board paper making machine
. Pulp is generally divided into surface layer,
two layers, three layers, and four layers. The fiber proportion of each layer of pulp is different,
and the fiber proportion of each layer of pulp is different depends on the quality of finished paper.

 

About coated duplex board paper making machine pulp layer,the first layer is top layer pulp, which requires high whiteness certain strength,which usually use
bleached sulfate wood pulp or combination of partially bleached chemical straw pulp and waste white
shavings pulp;The second layer is the lining layer, which plays the role of separating the surface layer
and the core layer. It also requires certain whiteness, usually use 100% mechanical wood pulp or light-colored
waste paper pulp.;The third layer is the core layer, which is mainly used for filling to increase the thickness
and stiffness of duplex board. usually use mixed waste paper pulp or straw pulp is used;The last layer is the
bottom layer, which has the functions of improving the appearance, strength and preventing curling of the duplex
board. usually made from better waste paper pulp.

 

We are a professional manufacturer of pulp making and paper making equipment,m
ore than 40 year’s development in China,supply full production line design to installation,
commissioning and training,welcome contact me any time.

E-mail:susupapermaking@gmail.com