TS-7403L Ca/Zn Stabilizer for PVC Drainage Pipes

Powder Form · 2.8–3.2 PHR
Low-Lubrication Formulation for Controlled, Stable Extrusion

PVC drainage pipes live a long, quiet life under load. They are not rushed through extrusion for glossy perfection; they are shaped deliberately, cooled carefully, and expected to hold form for decades. TS-7403L is formulated precisely for this philosophy of production.

TS-7403L is a calcium-zinc (Ca/Zn) stabilizer in powder form, designed for rigid PVC drainage pipe applicationsrequiring low lubrication, strong thermal stability, and excellent fusion control. With a recommended dosage of 2.8–3.2 PHR, it delivers efficient stabilization while maintaining tight dimensional control and robust mechanical performance.

Why Low Lubrication Matters in Drainage Pipes

In drainage pipe extrusion, excessive lubrication can be a silent problem. Too much slip in the melt leads to poor fusion, reduced impact strength, and unstable wall thickness—especially in thick or large-diameter pipes.

TS-7403L is deliberately formulated with low lubrication to:

• Promote strong PVC fusion

• Improve melt cohesion

• Enhance mechanical strength

• Reduce internal weakness in thick walls

This makes it ideal for manufacturers prioritizing pipe strength, roundness, and long-term reliability over extreme extrusion speed.

Thermal Stability You Can Trust

PVC degradation is unforgiving. Once HCl release begins, failure accelerates fast. TS-7403L’s Ca/Zn system intercepts this process early, protecting the polymer chain throughout extrusion.

Key thermal benefits include:

• Strong initial heat stability

• Consistent color control during processing

• Reduced risk of burning or black specks

• Reliable performance during long production runs

This allows stable processing even with conservative temperature profiles—ideal for drainage pipe lines focused on structural quality.

Processing Behavior: Calm, Predictable, Controlled

TS-7403L works in harmony with the extruder. Its powder form disperses evenly in the PVC compound, ensuring consistent stabilization across the melt.

Processing advantages:

• Stable torque and pressure

• Predictable die behavior

• Reduced melt slippage

• Improved dimensional accuracy

The low-lubrication nature helps maintain firm contact between the melt and tooling, resulting in better pipe geometry and uniform wall thickness.

Mechanical Strength for Long Service Life

Drainage pipes endure compressive loads, soil pressure, temperature variation, and moisture exposure over decades. TS-7403L supports the PVC matrix to resist these forces.

Pipes stabilized with TS-7403L show:

• Improved impact resistance

• Strong tensile and flexural properties

• Resistance to thermal aging

• Long-term structural integrity

This makes it well suited for:

• Underground drainage systems

• Sewage and wastewater pipelines

• Rainwater drainage pipes

• Residential and municipal infrastructure

Surface Quality: Functional and Clean

While decorative gloss is not a priority, surface integrity is. TS-7403L promotes:

• Smooth, even pipe surfaces

• Reduced risk of streaks or burn marks

• Uniform appearance across production batches

The controlled lubrication level prevents surface defects while preserving internal pipe strength.

Environmentally Responsible Ca/Zn System

TS-7403L is completely lead-free, meeting modern environmental and regulatory requirements.

Compliance highlights:

• RoHS compliant

• REACH aligned

• Suitable for construction and infrastructure markets

• Safe for long-term drainage applications

It provides a responsible alternative to traditional heavy-metal stabilizers without sacrificing performance.

Compatibility and Formulation Flexibility

TS-7403L integrates smoothly into rigid PVC drainage pipe formulations and is compatible with:

• Calcium carbonate fillers

• Processing aids

• External lubricants (adjustable)

• Impact modifiers

• Pigments and TiO₂

Because lubrication is intentionally low, processors have greater control over the final lubrication balance in the formulation.

Recommended Use

• Dosage: 2.8–3.2 PHR

• Processing: Extrusion

• Mixing: High-speed mixing recommended for uniform dispersion

Minor lubrication adjustments may be required depending on pipe size, filler loading, and extrusion speed.

Packaging and Storage

TS-7403L is supplied in moisture-resistant packaging.

Storage guidelines:

• Store in a cool, dry place

• Protect from humidity and sunlight

• Follow FIFO inventory practices

Under proper storage, performance remains stable throughout shelf life.

Why TS-7403L

Because drainage pipes need discipline, not excess.

TS-7403L delivers:

• Low-lubrication control for strong fusion

• Reliable Ca/Zn thermal stabilization

• Excellent dimensional stability

• Long-term mechanical integrity

• Environmental compliance

It is the stabilizer of choice when pipe strength, fusion quality, and structural reliability matter more than speed or surface gloss.