PVC sheet plant screw barrels are essential components in PVC sheet extrusion equipment, designed to melt, mix, and extrude PVC resin into flat sheets with varying thicknesses and properties. These screw barrels play a crucial role in achieving uniform melt distribution, controlled cooling, and precise dimensional accuracy required for different PVC sheet specifications

Application:

PVC profile(Door & window) / WPC(PVC,PE) / PVC foam board / PVC pipe / PVC compound etc

1. Bimetal conical twin screw barrel for extruder machinery of Chinese Standard
2. Base Material: 38CrMoAlA;
3. Nitrided or bimetallic

Conical twin screw barrel application

1) PVC pipe extrusion line;                        2) PVC sheet extrusion line;

3) PVC & WPC profile extrusion line;       4) PVC granulation line;

5) PVC foaming production line;

The raw material can be new and recycle, the material can compound calcium powder 5% - 300%.

Conical twin screw extruder cylinder and screw are made of high quality 38CrMoAIA, 42CrMo, 304 stainless steel and other materials from famous manufacturers at home and abroad. Advanced nitriding process, corrosion resistant and wear-resistant bimetal spraying process are adopted to meet the technical requirements. Specification optional SJS 51, SJS 55, SJS 65, SJS 80, and the hardness: HB240 degrees -280 degrees; nitride hardness: HV850 degrees -1000; nitriding depth: 0.45-0.7mm; brittle nitride: less than two grade; chrome layer thickness: 0.05-0.10mm.

Specification

The most common types of conical twin screw barrel extruder
Types of screw (d/D)	Length of work(mm)	Quantity ofextruder(kg/h)	Speed of screw rotate(rpm)
Φ35/77	810	40-70	5~50
Φ45/99	990	50-80	5~45
Φ51/105	1070	100-150	4~45
Φ51/105	1220	100-150	4~45
Φ55/110	1220	120-180	4~40
Φ60/125	1320	150-200	4~40
Φ65/120	1440	200-250	4~40
Φ65/132	1440	200-250	4~40
Φ70/140	1460	220-300	4~40
Φ75/150	1480	250-320	4~35
Φ80/143	1660	300-360	4~35
Φ80/156	1800	300-360	4~35
Φ90/184	2000	400-500	3~35

Our Benefits

1. Precision Melt Control and Mixing
Injection molding machine screw barrels ensure precise melt control and thorough mixing of additives, colorants, and fillers into the polymer melt. This results in uniform melt quality and enhanced part aesthetics.
2. Extended Service Life and Durability
Our screw barrels are manufactured from high-quality materials, including nitrided steel, bimetallic alloys, and tungsten carbide coatings, to withstand abrasive wear and corrosion. This ensures extended service life and reduced maintenance downtime.
3. Optimized Injection Molding Parameters
By optimizing screw design and material selection, our screw barrels enhance injection molding parameters such as cycle time, shot size consistency, and part dimensional stability. This improves overall production efficiency and reduces scrap rates.
4. Customization Options
We offer customization options to meet specific customer requirements, including screw diameter, length-to-diameter ratio (L/D), flight geometry, material composition, and surface treatments. Our engineering expertise ensures that each injection molding machine screw barrel is optimized for maximum performance and reliability.