Talc in Plastics
Enhancing performance, efficiency and sustainability in polymer applications
Talc is a widely used mineral in plastics, acting as a multifunctional additive to improve mechanical, thermal, and environmental performance. Its lamellar structure and chemical inertness make it ideal for automotive, packaging, consumer goods, and biopolymer applications.
Functional Roles of Talc in Plastics
Talc functions as a:
Reinforcing filler, improving stiffness, dimensional stability, and impact resistance.
Antiblocking agent, especially in film applications.
Typical applications include:
Automotive parts
Bumpers, dashboards, under-hood components
Appliances and consumer goods
Rigidity, surface finish, heat resistance
Packaging
Weight reduction, cost savings, improved strength
Recyclable compounds
Restoring properties in post-consumer plastics
Technical Benefits of Talc in Plastics
Talc functions as a:
Higher stiffness-to-weight ratio
Enhanced dimensional stability (reduced shrinkage and warping)
Increased heat resistance, especially in PP compounds
Better scratch resistance
Improved flow and moldability, reducing energy consumption
MinTalc® Grades and Compatibility
MinTalc® grades are engineered for:
Polypropylene (PP)
Polyethylene (PE)
Polyamide (PA)
They are available in various fineness levels and aspect ratios to meet technical and economic formulation goals.
PVC
Polystyrene (PS)
Engineering plastics
Compacting Technology:
Added Value of Compacted Talc
Global Minerals Technologies offers compacted MinTalc® grades that:
Improve handling and reduce dust
Ensure better dispersion in compounding
Optimize logistics and feeding in extrusion processes
New product in development. Soon in our portfolio.
Performance by Application Area
Automotive & Industrial Applications (PP, PA)
MinTalc® as a functional filler:
PP Compounds
+15–20°C in HDT
Shrinkage <0.8%
Cost savings (10–30%) replacing glass fiber/virgin resin
Nylons (PA6/66)
Flexural modulus up to 5000 MPa
–50% moisture uptake
Dimensional stability under humidity cycling
Scratch and Mechanical Enhancement:
MinTalc ScratchPro ST / ArmorShield™
MinTalc produces high-quality fine talc grades used as functional fillers in the automotive and paint/ink industries.
Surface-functionalized Talc grades designed for polyolefin-based automotive compounds, offering enhanced mechanical properties and improved long term scratch resistance.
Key Findings:
Surface-treated talc improves scratch resistance up to 38%.
Mechanical properties remain stable or improve.
Best results with 2–3% additive loadings.
Key Applications:
Automotive interiors (dashboard, door panels)
Exterior trim
Under-hood components
Tech: High-Speed Surface Treatment (HSST)
Functional additives bonded at molecular level
Uniform hydrophobic surface
Laminar structure preserved
Engineering Plastics
MinTalc® as a performance additive:
ABS: Scratch resistance (ASTM D3363 ≥H), flame retardancy (UL94 V-0)
PC blends: Optimized melt flow, haze <10% for LED/optical applications
Nucleating Agent Applications
PS/HIPS: −15–20% cycle time, improved surface finish, +10–15°C HDT
EPS/XPS: Uniform cell structure, better thermal insulation (0.033 W/m·K)
MinTalc®in Packaging and Biopolymers
Key advantatges:
Higher stiffness and mechanical strength
Improved heat resistance
Lower resin use without quality loss
Better moldability
Biopolymer compatibility
Film & Plastic Bags: Performance Enhancers
Materials: LDPE, LLDPE
Anti-blocking, better stretch performance
Food Packaging: Functional Additives
Materials: PP, PLA
Enhances oxygen/moisture barrier
Enables stable thermoforming
Bioplastics: Sustainable Solutions
Tackles brittleness and heat sensitivity
Improves extrusion and molding
Enables durable, compostable items
Applications
- Compostable packaging
- Molded cutlery
- Eco-friendly durable bags
MinTalc®as Nucleating Agent in Biopolymers
Advantages
- Finer particles = better surface area
- Reduces energy and cooling time
- Broad polymer compatibility
Why Choose MinTalc® by Global Minerals Technologies
Tailored for conventional and bio-based plastics
Proven mechanical and thermal benefits
Enabler of circular economy
Advanced compacting and surface treatment technologies
Technical and commercial support
For inquiries related to products, documentation, regulatory compliance or specific technical requirements, please contact our team.
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