Soft PVC Sheet Extrusion Line
Product Overview
The Soft PVC Sheet Extrusion Line produces flexible, plasticized PVC sheets for packaging, inflatable products, pool liners, industrial curtains, and medical applications. These sheets combine the chemical resistance and weldability of PVC with the flexibility and softness provided by plasticizers.
The line features a single-screw extruder with venting, a T-die for uniform sheet width, three-roll calender for surface finishing, and automatic winding system. It produces sheets from 0.5mm to 5mm thick in widths up to 1800mm, with Shore A hardness adjustable from 60A to 95A by varying plasticizer content.
Soft PVC sheets serve diverse markets — from consumer products (inflatable toys, pool liners) to industrial applications (chemical-resistant curtains, welding screens) to medical products (blood bags, medical tubing sheets). Each application requires specific formulation adjustments for plasticizer type, UV stability, and regulatory compliance.
The optional online embossing system creates textured surfaces for non-slip applications, decorative patterns, or matte finishes. This versatility allows a single production line to serve multiple market segments with minimal changeover time.
Key Features
Single-screw extruder with venting
T-die for uniform sheet width
Three-roll calender for surface finish
Online embossing option
Automatic winder
Production Process
From raw material to finished product — each step is engineered for quality and efficiency.
Compound Preparation
Plasticized PVC compound with 30-80 parts plasticizer (depending on target hardness), UV stabilizers, and pigments. Medical grades use non-toxic, non-migratory plasticizers.
Vented Extrusion
The vented single-screw extruder removes volatiles from the plasticized compound at 160-180°C, ensuring bubble-free sheets with consistent flexibility.
T-Die & Calender
The melt flows through a T-die and into a three-roll calender that controls thickness and surface finish — smooth, matte, or embossed.
Embossing (Optional)
A heated embossing roll applies surface texture — non-slip patterns, decorative designs, or matte finishes — for specific applications.
Cooling & Haul-off
The sheet passes through cooling rolls and a haul-off unit that maintains consistent speed and tension for flat, wrinkle-free production.
Winding
Finished sheets are wound into rolls with automatic tension control. Roll diameters up to 800mm are standard for efficient handling and shipping.
Technical Specifications
| Extruder Model | SJ-90/120 |
|---|---|
| Sheet Width | 1000mm - 1800mm |
| Sheet Thickness | 0.5mm - 5mm |
| Shore A Hardness | 60A - 95A |
| Production Speed | 5-12 m/min |
| Total Power | ~65-95 kW |
Why Choose Wings Plastic
Wide Hardness Range
Adjustable plasticizer content produces sheets from 60 Shore A (very soft, for inflatables) to 95 Shore A (semi-rigid, for industrial applications) from the same extruder.
Vented Processing
Vented extruder removes volatiles and moisture — critical for producing bubble-free sheets in plasticized formulations that tend to trap gases during processing.
Medical-Grade Capability
Line and formulation support medical-grade PVC sheets using non-toxic, non-migratory plasticizers (TOTM, DEHT) compliant with USP Class VI and ISO 10993 standards.
Online Embossing
Optional embossing system creates textured surfaces for non-slip, decorative, or matte applications — adding product value without additional processing steps.
Large Format Production
Sheet widths up to 1800mm serve large-format applications (pool liners, industrial curtains) that smaller lines cannot produce efficiently.
Quality Assurance
Every production line undergoes rigorous quality verification before delivery:
- Shore A hardness tested at regular intervals along the sheet length
- Thickness uniformity verified at 5 points across sheet width
- Tensile strength and elongation tested per ASTM D638
- Plasticizer migration tested for medical and food-contact grades
Typical Applications
Frequently Asked Questions
DOTP for general-purpose (low migration, non-toxic). TOTM for high-temperature and medical (very low migration). DEHT for food-contact. DINP for cost-effective general use. The choice depends on application, regulatory requirements, and cost targets.
Yes, with appropriate formulation (non-toxic plasticizers, medical-grade PVC resin) and clean production protocols. We provide formulation guidance and support USP Class VI and ISO 10993 compliance testing.
0.5mm for stationery and packaging, 1mm for inflatables and medical products, 2mm for pool liners and industrial curtains, 3-5mm for heavy-duty industrial applications.
For manufacturers serving multiple markets, yes. Embossing adds 20-40% to product value for textured, non-slip, or decorative sheets. The system pays for itself within 6-12 months for most production volumes.
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