350TPD duplex board paper making machine produce super quality board paper with gray back
Description
This duplex board paper making machine mainly produces high strength fluting paper, testliner cardboard paper. The paper weight is 90-200gsm, and net paper width reaches 4900mm. The designed speed of this duplex board paper making machine is 500m/min, and working speed is 350-450m/min. Normally crawling speed is 25m/min.
Technology condition of the duplex board paper making machine
Raw material | 100% OCC |
Pulp approaching consistency | Top wire @0.35~0.55% |
In-line wire @0.65~0.95% | |
Bottom wire @0.65~0.95% | |
Transverse shrinkage (average) |
≤±1.0% |
Transverse grammage difference | ≤±2% |