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PVC Sealing Strip Extrusion Line

+25% Output Efficlency

-15% Energy Consumption

99.6% Stable Operation Rate

Why our plastic profile extruder stands out

Midtech sealing strip is used for producing PVC TPE sealing strip, the sealing strip is widely use in window and door profile, car industry. It is composed of feeding system,extruder,water cooling system,haul-off unit,winding machine or double roller,electric control system and coordinated with different specification of moulds.

Parameter

ModelScrew dia.L/D ratioMain powerCapacity
YT-45Φ45mm25-287.5-11KW20-30kg
YT-55Φ55mm25-2811-15KW30-40kg
YT-75Φ75mm25-2822-30kw40-55kg

Core Advantages

Extruder

World famous brand electrical component such as Siemens, Schneider, ABB etc.

High torque gearbox with adopts NSK/SKF bearing.

Accurate temperature control with air cooling and water cooling.

Intelligent PLC controlling system with human-friendly interface.

Mould & Cooling Water Tank

High-efficiency design with enlarged flow channels and low shear technology, ensuring high-speed extrusion, high precision, and reduced material waste.

Corrosion-resistant construction for long service life and reliable performance.

Compact structure with easy operation and maintenance, featuring two-way adjustment (forward/backward and up/down).

Equipped with high-quality electrical components and SUS304 stainless steel water-contact parts for durable and stable operation.

Traction Cutting Machine

Upper and lower belt is driven separately and speed control by frequency inverter.

Belt caterpillars with pneumatic clamping provide uniform, non-slip pulling.

The guillotine cutting action provides straight, perpendicular cuts with minimal deformation.

Integrating traction and cutting into one unit saves floor space and simplifies line alignment.

YOUR PARTNER IN PLASTIC PROCESSING

Midtech transforms plastics into possibilitles.

ConticLus today tarlormereebuut our torpliele pluasli processing solutions.

FAQ

What’s the main difference between PVC and TPE for sealing strip extrusion?

PVC is cost-effective and rigid or semi-rigid, ideal for general sealing. TPE is more flexible, elastic, and offers better low-temperature performance, UV resistance, and recyclability without plasticizers.

Yes, but with adjustments. The screw design, barrel cooling, and temperature control zones differ. A line optimized for both usually requires a versatile screw and quick-change die/tooling system.
Causes: low-molecular-weight additives migrating to die exit. Solutions: use chrome-plated or nitrided steel dies, add 0.5–1% processing aid (acrylic modifier), reduce screw speed, and clean die every 4–8 hours with copper scrapers (never steel).
Surface roughness → adjust melt temperature or die lip finish. Shrinkage or warping → increase cooling length or adjust haul-off speed. Poor bonding (co-extrusion) → match melt viscosity and die temperature. Inconsistent profile → check screw speed, feed rate, or calibrator vacuum.

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