PVC Stabilizers for Modern PVC Processing – CaZn & Methyl Tin Solutions
1. At a Glance: WANSYN PVC Stabilizer Portfolio
WANSYN Industry is a vertically integrated manufacturer of eco-friendly PVC stabilizers and functional plastic sheets with a 50,000 t/y stabilizer base in Zhejiang, China.
Our PVC stabilizer portfolio covers:
Powdered Ca-Zn stabilizer series – one-pack, lead-free systems for rigid & flexible PVC
Liquid methyl tin stabilizers – high-clarity heat stabilizers for rigid transparent PVC
Application-focused grades for SPC/LVT flooring, PVC pipes & fittings, profiles, clear films & sheets, edge banding, soft films and cables
This page helps PVC converters choose the right stabilizer grade and understand how WANSYN supports formula design, testing and long-term supply.
Typical search intents matched by this page
“CaZn PVC stabilizer for SPC flooring / rigid core vinyl”
“PVC pipe stabilizer G-80”
“clear PVC film stabilizer CT-103 / N-450”
“edge banding PVC stabilizer FB-100”
“how to choose between CaZn and methyl tin stabilizers”
2. What Is a PVC Stabilizer and Why Does It Matter?
PVC resin on its own degrades under heat and shear. Without a stabilizer, melt processing causes:
Rapid discoloration (yellow/brown/black)
Loss of mechanical strength
Poor fusion and plate-out on the die
PVC stabilizers:
Protect PVC during extrusion, calendering, injection and foaming
Maintain color, transparency and gloss
Support long-term performance in outdoor, hot and high-load conditions
Today, stabilizer choice is also a regulatory and branding decision. Global brands prefer solutions that are:
Lead-free, Ba/Cd-free
Low VOC / low odor
Supported by RoHS / REACH and, where needed, food-contact documentation
3. WANSYN Stabilizer Families
3.1 Powdered Ca-Zn Stabilizer Series
WANSYN powdered Ca-Zn stabilizers are one-pack, lead-free systems designed for both rigid and flexible PVC. They combine calcium and zinc soaps with tailored lubricants and co-stabilizers to deliver:
Strong thermal stability and long-term color hold
Balanced internal / external lubrication for smooth extrusion
No plate-out or blooming when properly matched to the formulation
Compliance-oriented formulations for RoHS, REACH and major export markets
They are available as application-specific grades, described in Section 4.
3.2 Liquid Methyl Tin Stabilizer Series
WANSYN liquid methyl tin stabilizers are high-efficiency heat stabilizers for rigid transparent PVC. They are widely used in:
Rigid clear sheets & films (calendered and extruded)
Transparent profiles and bottles
SPC / LVT flooring wear layers and transparent overlays
Key characteristics:
Excellent initial color and clarity
Wide processing window at higher temperatures
Low dosage vs many non-tin systems
Can be used alone or as a booster together with Ca-Zn systems to improve initial color and stability.
4. Application-Focused Grades in the Ca-Zn Powder Series
This section maps your typical PVC applications to specific WANSYN Ca-Zn grades, as shown across your product center.
4.1 Rigid Calendered Sheet & Extrusion – Y-181
Lead-Free PVC Stabilizer Y-181 — Rigid Calendering & Extrusion
For rigid PVC calendered sheet & film, profile and pipe extrusion
Low-odor, lead-free stabilizer with good heat stability and color retention
Supports high output with smooth surfaces and clean die lips
Typical uses: rigid packaging sheet, profiles, certain pipe grades as a general-purpose rigid stabilizer.
4.2 Tin-Replacement Rigid PVC – Y-550
Lead-Free PVC Powder Stabilizer Y-550 — For Calendered Sheet/Film, Extrusion & Blown Film
Designed to replace 30–60% of traditional methyl tin systems in rigid PVC
Works across calendered sheet/film, extrusion and blown film
Strong heat stability, low odor, clean processing without plate-out
RoHS-oriented formulation
Typical uses: rigid film & sheet for packaging, rigid profiles, high-clarity but non-ultra-clear applications where some tin replacement is desired.
4.3 Super-Clear Flexible Films & Sheets – CT-103
Lead-Free PVC Stabilizer CT-103 — For Super-Clear Flexible Films & Sheets
Powder Ca-Zn stabilizer focused on ultra-clear flexible PVC
Very low odor, strong initial and long-term heat stability
Anti-plate-out, smooth calendering, print-friendly surface
Typical uses: crystal-clear soft films and sheets, “soft glass” sheets, clear covers, stationery films, display sleeves.
4.4 Transparent Semi-Rigid & Flexible PVC – N-450
Lead-Free PVC Powder Stabilizer N-450 — For Transparent Semi-Rigid & Flexible Sheets/Films
Next-generation Ca-Zn stabilizer for high-clarity semi-rigid and flexible PVC
Designed to replace organotin systems with no heavy-metal residues
Ultra-clear transparency, clean die lips, low/odorless processing
Typical uses: semi-rigid packaging sheet, flexible clear films, hoses, sleeves and blown films.
4.5 Soft Opaque Films & Synthetic Leather – FR-300
PVC Powder Stabilizer FR-300 — For Soft, Opaque/White Films, Leather & Blown Film
Ca-Zn stabilizer for soft, opaque and white PVC
Optimized for blown film, calendared film and synthetic leather
Good color hold, stable foaming (where applicable) and clean processing
Typical uses: soft white films, advertising tarpaulins, leather & shoe materials, opaque blown films.
4.6 Printing-Grade Edge Banding – FB-100
PVC Powder Stabilizer FB-100 — Printing-Grade Edge Banding (Furniture)
For PVC edge banding where high gloss and printing quality are critical
Delivers heat and light stability with anti-sulfidation staining
Enhances ink adhesion and coverage for indoor and outdoor edge banding
Typical uses: furniture edge banding, decorative strips, high-gloss printed trims.
4.7 PVC Pipes & Fittings – G-80
PVC Powder Stabilizer G-80 — For Extruded Pipes & Fittings
Engineered for pipe & fitting extrusion
High initial whiteness, robust heat stability and weatherability
Clean melting and welding for strong joints and good pressure rating
Good dispersion and flow reduce die deposits and screw wear
Typical uses: pressure and drainage pipes, conduit, fittings for water and electrical systems.
5. When to Choose Ca-Zn vs Methyl Tin vs Hybrid
Use Ca-Zn powder stabilizers when:
You need lead-free, Ba/Cd-free systems for rigid or flexible PVC
Applications include SPC/LVT flooring cores, profiles, pipes, cables, opaque films, soft leather and edge banding
You want a single one-pack stabilizer with built-in lubrication tailored to your line
Use liquid methyl tin stabilizer when:
Target is rigid transparent PVC with very high clarity and gloss
You run high-temperature, high-speed lines for clear sheet/film, bottles, profiles or SPC wear layers
You need strong heat stability in tropical climates and multi-pass processing
Use a hybrid Ca-Zn + methyl tin system when:
You want to keep most of the performance of methyl tin while lowering tin dosage and total cost
Products require high clarity but not absolute “water-clear” performance
You are in transition from organotin to eco-friendlier systems and need a stepwise change.
6. How WANSYN Supports Your PVC Projects
Beyond supplying stabilizers, WANSYN provides:
Formula design & optimization – matching stabilizer grade, phr and lubrication to your specific resin, filler and equipment
Free laboratory testing (by agreement) – torque rheometer curves, Congo red, oven aging, color / YI, transparency and plate-out evaluation
On-line technical support – start-up guidance and troubleshooting for warpage, yellowing, plate-out, fusion issues and VOC reduction
Export documentation – TDS, MSDS and RoHS / REACH support aligned with your target markets
Because WANSYN also produces functional PET/PS/PP sheets & rolls, we understand converters’ needs from additives to finished packaging – which helps us design stabilizer systems that work on real production lines, not just in the lab.
7. FAQ – PVC Stabilizers with WANSYN
Q1. Can WANSYN Ca-Zn stabilizers fully replace lead systems?
In most profile, pipe and board applications, yes—provided the formulation and lubrication are optimized. Several WANSYN Ca-Zn grades are specifically designed for this transition and are supported by technical guides on switching from lead to Ca-Zn without plate-out.
Q2. Which grade should I use for SPC rigid core flooring?
For SPC core layers, we normally recommend a high-filler Ca-Zn stabilizer package (Y-series or custom grade). For transparent wear layers, use a methyl tin or hybrid Ca-Zn + tin system, depending on clarity and cost targets.
Q3. What if I produce both clear films and opaque flooring on the same line?
We can help you define two matched stabilizer packages (e.g., CT-103 / N-450 for clear, FR-300 or a flooring-specific grade for opaque) with similar processing torque so that changeovers are easier.
Q4. Do you support customers in Southeast Asia and the Middle East?
Yes. Our stabilizers are already used in Vietnam, Indonesia, India, Bangladesh and other Asian markets, with formulations tuned for local resin and processing conditions. We can also support Middle-East customers via remote testing and samples.
8. Talk to WANSYN About Your PVC Stabilizer Project
If you are looking for a second source or planning to upgrade from lead or older systems to Ca-Zn or methyl tin solutions, our team can review your current formula and propose a step-by-step plan.
WANSYN Industry
Mobile / WhatsApp: +86 159 5847 3100
Email: info@wxchemgroup.com
Website: www.wxchemgroup.com
