1. Overview
Silicon core tube (HDPE silicon core duct) is a common composite pipe for optical cable communication, 5G and municipal engineering. It features a permanent inner silicone lubrication layer, with low friction for fast fiber blowing. Stable production process and core technologies determine the pipe quality and service life.
2. Complete Silicon Core Tube Production Steps
The whole production is continuous multi-layer co-extrusion processing, simple and standardized. The core steps are listed below:
|
No. |
Production Step |
Simple Introduction |
|---|---|---|
|
1 |
Raw Material Mixing |
Mix and dry HDPE raw material, silicone masterbatch and bonding materials to ensure uniform raw materials. |
|
2 |
Three-layer Co-extrusion |
Three extruders synchronously extrude outer HDPE layer, middle bonding layer and inner silicone lubrication layer. |
|
3 |
Vacuum Sizing |
Shape the hot pipe blank through vacuum tank to fix pipe diameter and roundness. |
|
4 |
Cooling & Solidifying |
Multi-stage water cooling to fully solidify the pipe and stabilize the composite structure. |
|
5 |
Stable Traction |
Traction machine runs at synchronous speed with extruder to ensure uniform wall thickness. |
|
6 |
Online Inspection & Marking |
Detect pipe diameter and wall thickness, print standard marks on the pipe surface. |
|
7 |
Winding & Finishing |
Wind qualified pipes into standard rolls for storage and delivery. |
3. Core Production Technologies
High-quality silicon core tube production relies on 3 key technologies, which solve common defects like delamination and uneven thickness:
- Three-layer Synchronous Co-extrusion Technology: The core technology of silicon core tube production. Ensure tight bonding of three layers, no peeling, and stable inner lubrication effect.
- Precision Die Head Technology: Balance melt pressure, make pipe wall thickness uniform and pipe surface smooth without deformation.
- PLC Synchronous Control System: Realize synchronous operation of extruder, traction and cooling equipment, greatly reduce product defective rate.
4. Common Defects & Simple Solutions
|
Common Defects |
Solutions |
|---|---|
|
Inner layer peeling |
Adjust raw material ratio and extrusion temperature |
|
Uneven wall thickness |
Calibrate equipment synchronous speed |
|
High inner friction |
Optimize silicone masterbatch feeding volume |
|
Oval pipe shape |
Adjust vacuum pressure and cooling water flow |
Hot Tags: pe silicon core pipe and multi-layer pipe extrusion production line, China pe silicon core pipe and multi-layer pipe extrusion production line manufacturers, suppliers, factory, CPVC Pipe Extrusion Line, hdpe pipe production line price, PVC Twin Pipe Extrusion Line, UPVC Pipe Macking Machine, PP Pipe Extrusion Line, PE Water Pipe Extrusion Line