PVC Corner Bead Machine
Product Overview
The PVC Corner Bead Extrusion Line produces rigid PVC angle profiles used to protect and reinforce external corners in drywall construction. These profiles prevent corner damage during construction and daily use, provide a straight edge for plastering, and create clean, professional corner finishes.
This compact, high-speed line uses an SJSZ-51/105 or SJSZ-65/132 conical twin-screw extruder with a multi-cavity die capable of producing 1-4 corner beads simultaneously. With production speeds of 8-15 m/min and multi-cavity output, the line delivers high volume output from a relatively small equipment footprint.
The integrated online punching station creates perforations or nailing holes along the corner bead profile, which are essential for plaster adhesion and installation. The punching pattern can be customized to meet different market preferences — some regions prefer perforated flanges while others use solid flanges with nail holes.
Corner bead is a commodity product where production efficiency directly determines profitability. Our line is optimized for minimal waste during startup, fast stabilization of profile dimensions, and automated stacking — reducing labor costs and maximizing usable output per shift.
Key Features
Multi-cavity die (1-4 outputs)
Online punching station
High-speed cooling system
Synchronized haul-off and cutting
Stacking and counting unit
Production Process
From raw material to finished product — each step is engineered for quality and efficiency.
Material Mixing
Rigid PVC formulation with high filler content (40-50 parts CaCO3) for cost efficiency. Impact modifier (CPE 6-8 parts) ensures corner bead won crack during installation.
Multi-Cavity Extrusion
The extruder feeds a multi-cavity die (1-4 outputs) that produces multiple corner bead profiles simultaneously, multiplying output per machine hour.
Calibration & Cooling
Each profile passes through individual calibration and cooling zones. The compact design ensures all cavities produce identical dimensions.
Online Punching
A synchronized punching station creates perforations or nailing holes along the bead flanges. Punch pattern is customizable per market requirement.
Haul-off & Cutting
A multi-track haul-off pulls all profiles simultaneously. Cutting saws trim each profile to standard lengths (2.4m, 2.7m, 3m).
Stacking & Counting
An automated stacking system collects, counts, and bundles finished corner beads for efficient packaging and shipment.
Technical Specifications
| Extruder Model | SJSZ-51/105 or SJSZ-65/132 |
|---|---|
| Outputs | 1-4 cavities |
| Bead Width | 25mm - 50mm |
| Production Speed | 8-15 m/min |
| Total Power | ~35-55 kW |
| Line Length | ~18m |
Why Choose Wings Plastic
Multi-Cavity Output
1-4 cavity die configuration multiplies production output by up to 4 times without increasing labor or floor space, dramatically improving per-unit cost efficiency.
Integrated Punching
Online punching station eliminates a separate perforation step, reducing labor and handling while ensuring perfect hole alignment with the profile.
High-Speed Production
At 8-15 m/min per cavity with up to 4 cavities, the line can produce over 50 meters of corner bead per minute — ideal for high-volume commodity production.
Compact Design
Total line length of only 18m makes this one of the most space-efficient profile lines, ideal for facilities with limited floor space.
Low Operating Cost
High filler formulation (40-50 parts CaCO3) and multi-cavity output result in one of the lowest per-meter production costs in the PVC profile category.
Quality Assurance
Every production line undergoes rigorous quality verification before delivery:
- Angle accuracy verified with digital protractor (90° ±0.5°)
- Perforation pattern uniformity checked visually and dimensionally
- Impact resistance tested to ensure no cracking during installation
- Multi-cavity output consistency verified by comparing profiles from each cavity
Typical Applications
Frequently Asked Questions
A 4-cavity die produces 4 corner beads simultaneously, effectively quadrupling output. At 10 m/min per cavity, that 40 meters per minute — over 2,000 meters per hour from a single compact line.
Yes, the punching die can be changed to produce different hole patterns — round perforations, rectangular slots, or nail holes only. Custom patterns can be designed for specific market requirements.
Common sizes are 25x25mm, 30x30mm, and 50x50mm with 1-2mm flange thickness. The die can be designed for any size within this range.
Yes, corner bead is an excellent entry product — low material cost, high demand, simple formulation, and the multi-cavity design provides good returns on a relatively small investment.
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