Paper Impregnation & Coating Lines
NTRY Two Step Impregnation Drying Production Line for Melamine paper and Phenolic Paper
The impregnation and coating production line for wood-based panel facing paper is a highly automated production line designed for the gluing of decorative paper and HPL base paper. It can continuously impregnate, coat, dry, and shear materials such as wear-resistant paper, insulation paper, kraft paper, and balance paper to ensure precise and efficient operation. The raw materials used include various impregnated base papers and melamine resin (MF), urea-formaldehyde resin (UF), phenol-formaldehyde resin (PF), etc.
Core process capabilities
Production applications
Equipment and process details
Final parameters and system boundaries are confirmed against materials, process targets, capacity and site conditions.
The impregnation and drying production line can be divided into a primary impregnation production line and a secondary impregnation production line. The primary impregnation production line has a relatively simple structure and high production efficiency. The same resin is used for back coating and impregnation, and the amount of glue applied is about 70%. High-pressure melamine decorative panels and base paper are generally produced in this way.
Main Line Sections
1. Un-Winder
1.1 Include
Nos 2 pieces of air-expanding shafts shift two rollers of raw paper without stop in operating. Two sets of tension control make paper unwinding automatically to match operating line speed.
1.2 Feature
Auto splicer device is located between two raw paper rollers. Paper from two different paper rolls can be jointed together by shifting knob while the initial pattern paper from its roll is cut off.
2. Impregnator
2.1 Working Principle
Printed paper has a thorough impregnation in resin bath; resin add-on is gauged by the gap between two doctors.
2.2 Include
Frame, two roller, auto splicer, tension control, magnetic brake, etc.
2.3 Metering Rollers
Metering roller assembly, Nos 2 of hard chrome galvanized high glossy roller; one roller located in a fixed position and driven by decelerator through universal joint. Another piece roller can be adjusted gap between two rollers. The movable roller at φ290mm, there is electronics screw controls roller horizontal movement; the gap precision will be Tan10 x 0.75mm / (3.14 x 24mm) in stepless at 1.7x10-4MM degree (0.1micro).
3. 1st Heating Ovens
3.1 Main Features
Adopt the newest structure design of full panel vertical operating, gives easier maintenance; it has good paper stability, high speed, low noise and heat insulation features.
3.2 Include
Thermal oil distributor, heating exchanger, hot air fan, air blower, fresh air control, etc.
4. 1st Cooler
4.1 Main Features
Each cooling zone is composed of a top and bottom air chest, blower connecting pipe and a blower fan. Upper and down air nozzles equalized in same distance. Two pieces of side-door of the cooling chamber is easy inspection and cleaning. Auto-locking knob can be firmly closed.
5. 2nd Coater
5.1 Main Features
Wider range mesh roller coating device: it equips with a set of resin scraper and automatic trimming blades. The top and bottom coating roller are driven by two independent deceleration motors, each motor is 1.1kw. VVVF controls line speed of the coating rollers. Smooth and leveling device consists of 4 chrome-plated roller and telescopic cylinder. Nos 4 smoothing rollers are divided into the upper and lower groups, driven by two sets of 0.75kw deceleration motor in VVVF method. The telescopic cylinder can separate the smooth roller device for easy cleaning and overhaul.
6. 2nd Heating Ovens
6.1 Main Features
Each oven is equipped with 1 circulating hot air fan. Diameter at 800mm, the maximum hot air output is 18000m³/h. Hot air fan is controlled by VVVF. Honeywell Nr.1 PT100 temperature sensor detects chamber inner temperature. All separate oven assembles with 1 temperature controller, indicating and setting oven temperature; an extra three-way electric distributing valve makes it a twice heating circuit output, avoiding over-heating and energy waste.
7. 2nd Cooler
7.1 Main Features
2nd cooling chamber section as 3 meter, adopted one 3kw centrifugal motor. Each cooling zone is composed of a top and bottom air chest, blower connecting pipe and a blower fan. Upper and down air nozzles equalized in same distance. Two pieces of side-door of the cooling chamber is easy inspection and cleaning. Auto-locking knob can be firmly closed.
8. Web Aligner
8.1 Main Features
The web-aligner actuator is driven by the cylinder, and the servo motor drives the rectifying device. Two chrome-plated rolls, one on a fixed bracket and the other on the movable bracket. The edge of the paper is detected by 2 infrared sensors, and the servo motor electrical signal of the rectifying device is adjusted to keep center of paper in the middle between the two infrared sensors. Web-aligner sensitive at 5mm from paper central point.
Optional Units
Optional 1. Paper Tractor
Working Principle
The main traction roller diameter of 800mm, inter-layered design. There is rotary joint and cooling water connects and cycles inside the big drum. The auxiliary tractor roller diameter is 350mm, which is also inter-layered design, cooling water or tap water connection.
Optional 2. Paper Cutter
Working Principle
Sewing cutter gives high speed scissor sheeter for melamine impregnated finishing. High precision feeding roller is driven by servo motor, it gives high accuracy in cutting length. Paper feeding rubber roller is controlled by 2 cylinders, and the bell-shaped baffle is installed in the front, it keeps operation in a more safe way. Paper feeding roller is driven by a deceleration motor. Sewing cutting sheeter is controlled by servo motor, the bottom knife blade erection is cylinder control, and it contains blade gap adjustment device. To avoid paper sliding in feeding position, an air blower is built-in. Cutting accuracy under 35m/min: ±1mm/1000mm. High precision code device is equipped with shield cable transferring, no symbol disturbance.
Optional 3. Conveyor and Stacker
Working Principle
1+1 conveyor enhances operating convenience and working efficiency; stacker with self-lifting device matches paper stacking height.
On-site Installation
Successful Project
FAQ
Q1: Who we are?
A1: Nantong Ruiya Electromechanical provides complete solutions for the impregnation and lamination industries. Our products cover impregnation, lamination, electronic materials CCL, AL-CCL, carbon crystal plates, mica plates and other composite materials industries. We have 20 years of production and export experience, and our equipment is exported to Russia, the Middle East, India, Pakistan and other regions.
Q2: Why choose us?
A2:
- We will consider various factors from the perspectives of site, production volume, energy conservation and environmental protection, and provide a complete design solution.
- We have a technical team led by 5 senior engineers to discuss and solve various technical problems in a timely manner.
- Complete pre-sales and after-sales supply chain, supporting on-site installation.
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