products details
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KB 30/5/40 R 30° Forward Kneading Block 5 Discs 40mm Post Feeding Transition Element
| Brand Name: | OEM |
| Model Number: | KB009 |
| MOQ: | Negotiable |
| Price: | Negotiable |
| Payment Terms: | Negotiable |
| Supply Ability: | 8000pcs/month |
Detail Information
Place of Origin:
China
Certification:
ISO9001, ISO14001, ISO45001
Product Name:
30° Forward 5 Discs 40mm Post-feeding Transition Kneading Block
Model:
KB 30/5/40 R
Function:
Stabilize Feeding Flow, Buffer Pressure, Gradual Solid Pre-melting
Applicable Equipment:
Co-rotating Twin Screw Extruder
Application:
Heat-sensitive Plastics, Biodegradable Materials, Masterbatch, TPE/TPU, Low-medium Filler Modification
Advantage:
Stable Feeding, Low Heat Generation, No Material Degradation, Smooth Transition, Easy Cleaning, Long Service Life
Packaging Details:
Export Standard Carton, Wooden Case Sea-worthy
Highlight:
KB 30/5/40 R Kneading Block
,40mm Kneading Block
,OEM screw elements
Product Description
KB 30/5/40 R 30° Forward Kneading Block | 5 Discs 40mm Post-feeding Transition Element
KB 30/5/40 R 30 Degree Forward Transition Kneading Block
30° 5 Discs 40mm KB 30/5/40 R Low Shear Kneading Block for Twin Screw Post-feeding Melting
Product Overview
KB 30/5/40 R is a low-shear forward kneading block for twin screw extruders. It features a 30° forward angle, 5 discs and 40mm extended length. The element focuses on post-feeding transition and gradual solid pre-melting.
Compared with shorter 30mm kneading blocks, its longer structure extends material shearing time. It delivers mild and uniform shear force, stabilizes feeding flow and eliminates extrusion pulsation. It produces minimal frictional heat and protects heat-sensitive materials from degradation. It perfectly connects solid conveying and melting sections to keep continuous and stable extrusion.
Quick Details
| Model | KB 30/5/40 R |
| Type | 30° Right Hand Forward Soft Transition Kneading Block |
| Stagger Angle | 30° (Low Gentle Shear) |
| Disc Quantity | 5 Kneading Discs |
| Effective Length | 40mm Extended Transition Length |
| Core Function | Stabilize Feeding, Buffer Pressure, Gradual Pre-melting |
| Shear Mode | Long-distance Uniform Gentle Shear |
| Base Material | 38CrMoAl Nitrided Steel |
| Surface Hardness | HRC 58–62 |
| Processing Craft | Precision CNC Milling + Vacuum Nitriding + Mirror Polishing |
Key Features
- Stable Post-feeding Transition: It fits perfectly after the main feeding port. It buffers pressure spikes and feeding jitter to stabilize early extrusion flow.
- Full Gradual Melting: 40mm longer working distance lets materials shear and heat evenly. It removes unmelted particles and adapts to steady high-speed production.
- Low Heat & Material Protection: 30° low-angle design generates mild shear and less heat. It avoids yellowing and performance loss of heat-sensitive polymers.
- Balanced 5-disc Structure: Optimized staggered layout eliminates dead zones. It keeps consistent material stress and uniform melting effect.
- Smooth Forward Conveying: Forward spiral angle pushes materials steadily forward. It prevents material accumulation, backflow and barrel blockage.
- High Wear Resistance: Hardened nitrided steel resists particle abrasion. It maintains precise size and stable performance for long-term operation.
- Easy Maintenance: Mirror smooth surface reduces material adhesion. It shortens purging time and improves formula switching efficiency.
Application Scenarios
This kneading block suits low-shear transitional extrusion processes. It works well for biodegradable plastics, heat-sensitive polymers, color masterbatch pre-melting, TPE/TPU soft materials and low-medium filler modification. It is the best choice for production lines that require stable feeding and gentle melting.
Technical Specifications
| Item | Parameter |
| Full Specification | 30° Angle / 5 Discs / 40mm Length |
| Rotation Direction | Forward / Right Hand |
| Structural Feature | Extended Low-angle Forward Staggered Discs |
| Working Principle | Buffer feeding flow, apply gentle shear, realize gradual solid melting |
| Optional Materials | 38CrMoAl, W6Mo5Cr4V2, HIP Alloy, 316 Stainless Steel |
| Surface Treatment | Vacuum Nitriding + Mirror Polishing |
| Applicable Device | Universal Co-rotating Twin Screw Extruder |
| Core Advantages | Stable feeding, low heat output, uniform pre-melting, no material damage, smooth transition |
FAQ
Q1: What advantages does KB 30/5/40 R have over 30/5/30 R?
A1: It adopts 40mm longer length. It provides softer buffering and more sufficient gradual melting. It greatly stabilizes feeding and solves incomplete pre-melting problems in high-speed production.
Q2: Why choose 30° low angle for post-feeding transition?
A2: High-angle blocks produce strong shear and excessive heat. The 30° low-angle structure delivers mild shear. It protects heat-sensitive materials from burning and degradation in the initial melting stage.
Q3: Where to install this kneading block?
A3: Install it between feeding conveying section and intensive melting section. It forms a gentle gradient transition and optimizes the overall screw layout.
Q4: Does it support long-term high-speed production?
A4: Yes. It stabilizes material flow and eliminates feeding pulsation. It keeps consistent product quality during continuous high-speed extrusion.
Q5: Do you support customized specifications?
A5: Yes. We customize inner spline, special alloy materials and anti-corrosion surface treatments for special working conditions.
CTA
Choose KB 30/5/40 R low-shear kneading block to stabilize post-feeding flow and achieve damage-free gradual melting. We offer full customization on material, spline and surface treatment. Contact us to get factory price and professional screw layout guidance.
Factory View
