Flexible PVC Sealing Strip Extrusion Line

Product Overview

The URIDGE Flexible PVC Sealing Strip Extrusion Line is designed for producing flexible PVC sealing profiles used in door, window, furniture and related profile applications.

The line processes flexible PVC pellets through a single-screw extrusion system and a customized extrusion die. Each die is designed according to the customer’s final profile drawing and cross-sectional structure.

Because sealing-strip geometry varies between applications, the extruder and die configuration are selected according to the raw material, profile shape, profile complexity and required production conditions.

Typical Applications

Typical applications include:

• PVC door sealing profiles
• PVC window sealing profiles
• Furniture sealing profiles
• Customized flexible PVC sealing profiles

The line is focused on flexible PVC sealing strip and sealing profile production rather than rigid PVC window profile extrusion.

Production Process

The standard process flow is:

Flexible PVC Pellets → Material Feeding → Single-Screw Extrusion → Customized Die → Cooling Water Tank → Haul-Off → Winding.

Material is fed into the single-screw extruder, melted and homogenized, then pushed through the customized die to form the sealing profile. The extruded profile passes through the cooling water tank, is pulled steadily by the haul-off unit and is finally wound by the winding unit.

Standard Line Configuration

The standard core equipment includes:

• Material Feeding System
• Single-Screw Extruder
• Customized Extrusion Die
• Cooling Water Tank
• Haul-Off Unit
• Winding Unit

The extruder and the extrusion die are core standard equipment, not optional add-ons. Their specification and structure are configured according to the flexible PVC formulation, final product shape, cross-sectional geometry and complexity.

Single-Screw Extrusion

A single-screw extruder is used for this flexible PVC sealing strip line. The single-screw extruder melts and homogenizes the flexible PVC material before it enters the customized die.

Customized Extrusion Die

The extrusion die is designed according to the customer’s finished-profile drawing. The final die configuration and quotation depend on the profile cross section, dimensions and structural complexity.

For an accurate machine and tooling quotation, customers are encouraged to provide the finished-profile drawing, cross-sectional drawing and dimensions.

Cooling, Haul-Off and Winding

After leaving the die, the profile enters the cooling water tank to set and cool. The haul-off unit pulls the profile continuously and steadily, and the winding unit collects the finished soft PVC sealing strip in coils.

Melt-Temperature Control

Stable melt-temperature control is important when processing flexible PVC sealing profiles. The extrusion system can use internal oil cooling inside the screw together with copper-tube cooling around the front barrel section to help control material temperature during extrusion. Combined with PID temperature control, this supports more stable melt conditions through extrusion and die forming.

Pressure Closed-Loop Control

A pressure closed-loop control strategy can help maintain more stable extrusion pressure and material flow through the customized die.

Automation and Control

The line can be equipped with a Siemens PLC and an HMI touchscreen interface. PID temperature control and adaptive temperature control are used for extrusion temperature management. Optional automatic weighing and feeding systems can be configured according to production requirements.

The control system can also include:

• Pressure closed-loop control
• Overcurrent protection
• Overvoltage protection
• Recipe storage
• PLC remote communication module

Remote technical diagnostics can be supported through the PLC communication module when required.

Flexible Configuration

The line is based on a standard platform and can be configured according to the customer’s product. Configurable items can include:

• Flexible PVC material formulation
• Final sealing-strip shape
• Profile cross-sectional complexity
• Required capacity
• Voltage and frequency
• Electrical component brand
• Motor brand
• Automation requirements
• Factory layout

Customers can specify selected electrical and motor brands according to their preference and local availability.

Factory Testing

The production line is tested before shipment. Customers can provide their own flexible PVC material for trial production so that the extrusion line, die and processing conditions can be evaluated before delivery.

Installation and Technical Support

URIDGE provides installation, commissioning, operator training, remote technical support and spare-parts support.

• Warranty period: 1 year
• Typical production lead time: approximately 2 months
• Typical installation period: approximately 1 week

Before installation, customers should prepare a level floor and ensure that electricity, water and compressed-air or other required utility connections are available.

Project Experience

URIDGE has supplied flexible PVC sealing strip extrusion equipment to customers in markets including Indonesia, Thailand, Malaysia, Cambodia, Turkey and Russia. Many of these customers manufacture products for PVC door and window applications and require customized sealing profiles according to their own product designs.

Frequently Asked Questions

Can the sealing strip extrusion line be customized?

Yes. The extrusion line can be configured according to the flexible PVC material, finished profile shape, production requirement and factory conditions.

How is the extrusion die selected?

The die is designed according to the customer’s finished-profile drawing. Cross-sectional shape, dimensions and structural complexity are important factors in die design and quotation.

What extruder is used for this line?

A single-screw extruder is used for this flexible PVC sealing strip line. The detailed configuration is selected according to the flexible PVC formulation and final profile requirements.

Can you test the customer’s own PVC material?

Yes. Customers can provide their own material for trial production before shipment.

Does the line support automatic control?

The system can include Siemens PLC and HMI control, PID temperature control, pressure closed-loop control, recipe storage and optional automatic weighing and feeding.

Send Us Your Sealing Profile Drawing

To configure a suitable flexible PVC sealing strip extrusion line, please send us:

• Flexible PVC material information
• Finished profile drawing
• Profile cross-sectional dimensions
• Required production capacity
• Local voltage and frequency
• Factory layout / installation space

URIDGE will configure the extruder, die and downstream equipment according to the customer’s actual product requirements. You can request a quote or use the WhatsApp contact on this page to start.