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1900/230 Two-sided NCR Coating Machine Technical Specification

1900/230 NCR two-sided coating machine is one of our cost-effectivest

coating machine.
The technical specification as follows：
Part 1: Overview:
1.Usage:
  This is Carbonless Paper dedicated production equipment, which can

achieve the two-sided carbonless coating simultaneously. Especially

suitable for Carbonless Paper CFB, colored paper production, with the

features of high efficiency of production, low energy consumption,

stable performance of equipment, low consumption of base paper, and

high yield.
2. Technical characteristics:
2.1 Tension Control:
 Stable tension control is the guarantee for the equipment normal

working. As for the higher speed, lower base paperweight, the main

speed of total machine adopts PLC programmable controller and module

can to achieve automate closed-loop digital control. And also through

rotary encoder, proximity switch and the signal of tension transducer,

it can achieve high precision closed-loop control and realize the

tension precision within 0.5kg, furthermore to reduce the probability

of paper breaking and improve the ratio of production and yield.
2.2 Correction System:
As this model is used for top grade heat-sensitivity paper, in order to

ensure the efficiency paper follow-up slitting and finished paper

yield, the automatic error correction device is set at the rewinding

section.
2.3Digital Controlling System
The whole machine is driven by alternating current vector VFC of

microcomputer. The stability of performance is guaranteed by the

application of centralized control system of PLC programmable

controller and digital control module. Man-computer interaction is

achieved by industrial man-machine interface, meanwhile the

calculation, monitor and machine connection communication are achieved

as well. Digital control is guaranteed by high precision and high-speed

data calculation, exchange and control are achieved, eventually. This

machine has the features of simple operation and high degree of

automation. All parameters are adjusted to the best condition before

leaving the factory. The only thing you need to do is to input the data

of speed and tension, then the whole machine can be automatically and

simultaneously controlled.
2.4 Independent twin-roll calendaring device
To improve the surface quality of finished paper，to increase the

smoothness of finished paper, and maintain the finished product

thickness to maximum, according to request this machine adopts

Independent twin-rolls calendaring device to greatly improve the

smoothness of the carbon paper products quality.
Attached: Independent calendaring device diagrammatic drawing
Part 2. Main technical parameter:
    The width of roller surface: 1900mm
    Max width of paper: 1550mm
    The weight of base paper: 39~80g/m2
    Design speed: 230m/min
    Working speed: 150~210m/min
    Coating method: single roller feeding + gauge stick + air-knife

coating
    Quantity of coating device: two sets
Coating weight: 1~10g/m2
    Coating solid contain: 16-30%
    Viscosity of coating: 10-80CPS
    Starting speed: 10m/minute
    Drying method: hot air circulating + drying tank finishing
    Humidity of base paper: 5-6%
    Humidity of finished paper: 5-6%
    Heat medium: saturated steam
    Steam pressure:>0.6Mpa
    Drying tank pressure: < 0.25Mpa    
    Transmission mode: VVVF motor drive
Part 3, Outline of the structure
Craftwork chart as follows:
Single axis center winding---single-roller feeding device---air-knife

coating---hot air circulating drying--- Independent calendar finishing

system and drying tank finishing---double roller feeding device---air-

knife coating---hot air circulating drying----drying tank leveling---

single axis center rewinding