Basic Info.
                    
                    
                        
                                                            
                                                            
                                    Type
                                    Injection Blow Molding
                                 
                                                            
                                    Structure
                                    Vertical and Horizontal Composite
                                 
                                                            
                                    Plastic Type
                                    Thermosetting and Thermoplastic
                                 
                                                            
                                    Plasticizing Way
                                    Screw Type
                                 
                                                            
                                    Clamping Way
                                    Hydraulic & Mechanical
                                 
                                                            
                                                            
                                    Computerized
                                    Computerized
                                 
                                                            
                                    Certification
                                    CE, ISO9001:2008
                                 
                                                            
                                    Transport Package
                                    Wooden Box Strongly and Safely
                                 
                                                            
                                    Specification
                                    Dia14-600mm max length 10000mm
                                 
                                                            
                                                            
                                                            
                                                            
                                    Production Capacity
                                    50000PCS/Year
                                 
                                                     
                     
                 
         
    Product Description
                            (UPVC)Polyvinyl chloride is amorphous. UPVC pipe temperature:160-190 ºC. Mold temperature:40-60 ºC. Drying temperature:80 ºC×2hs.  Injection pressure:700-1500 kg/cm2. Density:1.4 g/cm3. Forming shrinkage :0.1-0.5% Thickness:2.0-50.mm   (24 h). water absorption:0.1-0.4%  Melt softening point:89 ºC.Distortion temperature:70 ºC.
So UPVC screw is special with other injection mold machine screw. It is completed without check;sealing element. Screw head is directlly milled together with screw flights section. There is a air discharge duct which can release the air.Also, we add the mixed flight to improve the plasticizing capability. 
For technology, there are several methods for your reference:
1: Electroplating:
2: Nitriding
3: PTA bimetallic alloy spraing
Our VIP customers as below,if you are using these brand machines,we can offer you ideal screw and barrel sets.