PVC corner profile production line (conical twin screw)

Product General Information:

Commercial Terms of Products:

Description:

The PVC building corner bead machine (also known as PVC external corner bead/internal corner bead forming machine or PVC corner bead extrusion production line) is a plastic extrusion equipment specifically designed for the continuous production of PVC corner bead profiles used in architectural decoration. This equipment is widely applied to the protection and beautification of indoor and outdoor walls, columns, door and window openings, and other areas prone to impact. The products exhibit multiple functions such as anti-collision, anti-cracking, edge finishing, and decoration.

Basic composition of equipment

A complete set of PVC corner bead machine usually includes the following core modules:

Module Function Description

1. Raw Material Drying and Feeding System: PVC agranules need to be dried at 80–100℃ for 2–4 hours to prevent moisture from causing bubbles; automatic vacuum feeding, with a compounding machine (which can add calcium carbonate, titanium dioxide, stabilizers, CPE impact modifiers, etc.).

2. Conical twin-screw extruder: Common models of the main machine include SJSZ-55/110 and SJSZ-65/132, specifically designed for rigid PVC formulations. It ensures uniform plasticization, low shear heat, and prevents material decomposition.

3. Screen changer and melt pump (optional) Hydraulic screen changing (120–200 mesh) ensures melt cleanliness; the melt pump enhances pressure stability and improves dimensional accuracy.

4. Special profile molds: Customized according to the type of corner protector:

• Corner protector for external corners (90° external corners, with grid/glossy back panel)

• Internal corner protector (edge finishing for internal corners)

• Arc corner guards (R-corners, used in children's rooms, hospitals)

The mold material is typically 3Cr13 or H13 steel, with a chrome plating on the surface for anti-sticking.

5. Vacuum sizing table + spray cooling water tank: Multi-stage vacuum adsorption + water cooling ensures stable profile dimensions and no deformation; the cooling length is 3–6 meters, accommodating different wall thicknesses (1.0–2.5mm).

6. Tractor: Tracked or combined tracked and rubber roller traction, with a speed range of 0.5–5 m/min, equipped with encoder feedback to ensure uniform speed.

7. Cutting and Stacking System: Utilizing flying knife cutting or saw blade cutting, the length can be set (such as 2.4m, 2.7m, 3.0m), with automatic counting and stacking.

Specifications: