Shuttering Plywood Film Impregnation Line

Shuttering Plywood Film Impregnation Line

The phenolic film of the building formwork（shuttering plywood film） is made by impregnating kraft paper with phenolic resin, which is used to endow the plywood with high water resistance, wear resistance, easy demolding and high turnover characteristics.

Shuttering plywood film can be processed using either a one stage impregnation line or a two stage impregnation line. The high-end phenolic film is made with 40g kraft paper + 100% phenolic resin.Usually there are black, red, brown, etc.

The shuttering plywood has excellent properties: 

1.Exceptional waterproof and moisture-proof performance; 

2. High wear resistance and weather resistance; 

3. Excellent demolding performance; 

4. High intensity and stability; 

5. Environmental Safety. 

This kind product usually is used for following items:

(1)Commonly used in civil buildings: walls, beams and columns, floor slabs of plain concrete formwork; 

(2)infrastructure projects: bridges, tunnels, high-speed railways, dams - heavy-load formwork; 

(3)special formwork: container floors, heavy packaging, carriage bottom plates, etc.

Production Parameters of Shuttering Plywood Film Impregnation Line

Working Width:800-3000mm

Mechanical Speed: 5~100m/min

Basis Weight Raw Paper: 18~220g/m²

Annual Capacity: 12,000,000-40,000,000 m2/year

Heating medium:thermal oil/natural gas

How to Build Shuttering Plywood Film Impregnation Line

Unwinding → First Impregnation → First Drying → Cutting/Rewinding

Un-winder

Unwinder with air-swelling shafts(or non-shaft) to continuously unwind and produce, and keep the correct paper tension constant through the automatic regulating mechanism. 

Two working positions with no-stop roll changing, automatic tension control (with an accuracy of ±0.5N), ensuring smooth operation of the paper sheet.

Automatic Splicer（option）

Automatically paper splicing from the top. Stick the new paper web to the old paper if the roll is changed and cut off the old paper. Two edge cutting devices for the edge trimming, can save resin. 

First Impregnating Station

It consists of a frame, S-roller, backing rollers, metering rollers, glue basin, etc. In this station paper is pre-impregnated and the glue pick-up is controlled by adjusting the gap between the metering rollers. 

Secondary Coating machine

Newly designed frame for more stable operation. The smoothing roller frame can be raised in its entirety to facilitate the cleaning of the anilox rollers. Two times resin covering onto both sides of the paper according to process requirements.

Dryer

Air flotation type dryer, drying the paper after first impregnator and secondary coator. The heating medium can choose to use thermal oil or natural gas. Special frame construction and insulation for energy savings.

Cooler

Attached to the back of the dryer to cool the paper. Lengths can be customized on request and equipped with a cooling device.

Web aligner

Enable accurate and reliable web tension control and aligning of the web come from dryers.

Tractor

The traction machine is the driving unit that provides traction for the entire production line. Circulating cooling water is continuously introduced into the rollers to cool the paper.  

Paper cutter

Precise sheet cutting by means of START-STOP function and spin-type knife design to ensure optimized wear combined with excellent cutting quality. 

Stacking system

Consists of a belt and lifting table for the stacking of finished paper. A double-layer automatic stacking system can be used as an option depending on the requirements of the production process.

Features of Shuttering Plywood Film Impregnation Line

(1) Accuracyresin pick-up

(2) Multi-points web tension control

(3) cut-to-Marksystem

(4) High efficiency and energy saving dryer

(5) High speed and high production capacity

(6) Simple maintenance, few consumables required

(7) high quality finished product, stable pre-curing degree, uniform moisture content, good transparency and no glue spots.