The technology of PP corrugated hollow sheet extrusion machine

This PP corrugated hollow sheet extrusion machine is used to produce the PP hollow profile sheets, also called PP fluted sheet, PP corrugated sheets, PP hollow cross section board, PP coroplast sheet, which are featured with non-toxic, 100% recycled, light weight, low temperature resistance,
waterproof and moisture proof, corrosion resistance, impact resistance, energy absorption, noise blocking effect.Widely used
in architecture for light partitions, building material protection boards, turnover box, packing boxes etc. Instead of cartons for
packing, and also can be used for printing and advertising.

In addition, PP hollow sheet are colorful, printable, and machinable that are also widely used in stationery, Card supplies, etc.

Raw Material:
1. Can be PP virgin material
2.Can be recycable material

Sheets Specifications:
1. According to product width: we have 1400mm, 1800mm, 2300mm, 2400mm,2600mm, 2800 units
2. According to product thickness: we have 2-6mm, 6-12mm
3. According to the product structure: we have double wall sheet, three wall sheet, four wall sheet,
4. According to product shape: we have ordinary type I, S type, V type, X type,other type, etc.
5. Use plastic raw materials according to products: we have PP, PC

This Extrusion Line Consists of :
1. Single Screw Extruder
2. Melt-pump+Hydraulic exchanging unit
3. Vacuum Calibarting Table
4. First Haul off Machine
5. Oven
6. Corona treating unit
7.Cooling table
8. Second Haul-off Machine
9. Trimming and length-settled cutting unit
10. Discharging table.

Main Features of PP corrugated hollow sheet extrusion machine

1.Extruders parts: High speed, energy-saving, stable screw, and can increase capacity by more than 25%,
compared to other similar machines. The screw unique design can ensure an excellent plasticizing effect
and stable extrusion. 

2. Screen changer+melting gear pump: hydraulic quick change for the screens can effectively stop the
impurities of the raw material and guarantee the sheets quality. The melting pump can make the raw material
pressure stable to guarantee the stable extrusion. 

3. co-extruder design and feed-block for different colors or different raw material co-extrusion 

4. The T die mold is made of high quality alloy mold steel, specially designed flow channels for PP hollow profiles,a highly portable throttling device can guarantee the distribution pressure of the raw material flow inside T die uniformed to ensure the sheets thickness uniformed. T die mold can be designed to closed type without edges
trimming according to customer need.

5. Specially designed for calibrating device with individual control each unit; The vacuum system is composed of two subsystems. Each subsystem is equipped with multiple three-point fixed cycle vacuum groups. Each fixed cycle carries a vacuum adjustment system and a vacuum display system to make the vacuum degree of the plate surface uniform and stable. 

6.  There are two sets of haul off machines. The first set is equipped with 12 pics of wear-resistance rubber rollers and high power, which can simultaneously and uniformly pull the sheets from the vacuum calibrating table. The second haul off machine assists to remove the sheet stress.

7.Transverse cutter: Equipped with precise instant fixed-length cutting, special alloy wear-resistant blades with heating device to ensure the plate’s quality of the cut surface.

8.Whole line adopts fully automatic Siemens PLC touch screen control; the electronic control equipment effectively optimizes
the whole line operation and achieves high quality and high output.

Advantages of the PP corrugated hollow sheet extrusion machine
1. Required high production efficiency
2. Production flexibility( controllable sheet thickness and width, for example, you can produce 2-6mm thick sheet with the same mould or machine)
3. Reliability and stability
4.Excellent Adaptability to different raw material