PVC door and window strip extrusion equipment is the machinery used to produce PVC strips for strip curtains, door seals, window gaskets, and similar products. These machines melt raw PVC pellets and shape them into continuous strips with precise dimensions.
This guide explains what this equipment is, how it works, and what to consider when choosing it.
1. What Is PVC Strip Extrusion Equipment?
It is a production line that converts raw PVC compound into flexible or rigid strips of specific width, thickness, and shape.
Main components:
Component Function
Extruder Melts and pushes the PVC material forward
Die / Mold Shapes the molten PVC into the desired strip profile
Cooling tank Cools and solidifies the extruded strip
Haul-off unit Pulls the strip at a controlled speed
Cutting / Winding unit Cuts strips to length or rolls them for packaging
2. The Extrusion Process – Step by Step
1. PVC pellets (compound) are fed into the extruder hopper
2. The screw inside the extruder moves the material forward while heating it to 160–200°C
3 .The molten PVC is forced through a die that shapes it into a flat strip
4.The hot strip passes through a cooling tank (water or air) to solidify
5.The strip is pulled by the haul-off unit at a controlled speed
6. The strip is either cut to length or wound into rolls
3. Types of Equipment – What Can Be Produced
Equipment Type Products Made
Flat strip extrusion line Standard PVC strip curtains, soft sheets, flexible strips
Ribbed strip extrusion line Double-ribbed or multi-ribbed strips for extra strength
Co-extrusion line Strips with different materials/colors on each side (e.g., magnetic strips, dual-color)
Embossed strip line Strips with surface texture or patterns
4. The Role of Each Component
Component Detail
Extruder screw Determines output rate and mixing quality. Single-screw is common; twin-screw is used for better mixing.
Die design Determines strip width, thickness, and profile shape. Custom dies produce specific strip geometries.
Cooling system Water bath or spray cooling. Temperature control affects strip clarity and dimensional stability.
Haul-off unit Pulls at a consistent speed – critical for maintaining uniform thickness.
Cutting/winding Flying saw for rigid strips; winder for flexible rolls.
5. Key Features to Consider When Choosing Equipment
Feature Why It Matters
Screw design Affects output quality and material mixing efficiency
Temperature control Essential for PVC thermal stability – prevents degradation
Die precision Determines product accuracy and consistency
Line speed Affects production capacity
Cooling efficiency Impacts product clarity and dimensional stability
Automation level Reduces labor costs and human error
Energy consumption Affects operating costs
6. Common Applications for Extruded PVC Strips
Product Extrusion Equipment Used
Door strip curtains Flat or ribbed strip line
Freezer curtains Ribbed strip line with low-temp formulation
Magnetic PVC curtains Co-extrusion line (PVC + magnetic material)
Window seals Small profile extrusion line
Packaging strips Flat strip line with precise thickness control
7. Choosing Equipment Based on Product
If You Want to Produce... Choose Equipment That Can...
Standard flat strips Basic single-screw extruder + flat die
Ribbed strips Ribbed die + consistent cooling
Magnetic strips Co-extrusion (PVC + magnetic compound)
Thick sheets (5mm+) Larger extruder + precise cooling
High-volume output High-speed extruder + automation
Summary
PVC door and window strip extrusion equipment turns raw PVC pellets into continuous strips used in strip curtains, window seals, and protective barriers. The right equipment depends on:
The type of strip you need (flat, ribbed, magnetic)
Production volume
Material requirements
Understanding each component of the extrusion line – from extruder to cooling to cutting – helps you make the right investment for your production needs.
