For applications requiring a balance of glass-like clarity, high impact toughness, and cost-effectiveness.
In applications requiring a balance of glass-like clarity, high impact toughness, and cost-effectiveness, Styrene-Butadiene Copolymer (SBC) stands out as a premier choice. Often recognized under commercial trade names like K-Resin®, SBC bridges the gap between brittle transparent materials (like standard Polystyrene) and expensive engineered transparent polymers (like Polycarbonate).
- Excellent Optical Clarity: SBC provides a crystal-clear, high-gloss appearance with low haze, allowing for excellent product visibility in display and packaging applications.
- High Impact Toughness: Unlike regular polystyrene (which is notoriously brittle), the butadiene blocks within SBC act as internal shock absorbers. This gives the material excellent ductile behavior, meaning it will flex or bend under load rather than shattering.
- Exceptional Blendability: SBC is highly compatible with General Purpose Polystyrene (GPPS). Manterra engineers frequently blend these two resins to customize the exact balance of stiffness, impact resistance, and cost required for your specific product.
- Hingability and Flex Life: SBC exhibits good "living hinge" characteristics for clear applications, allowing lids and containers to be opened and closed repeatedly without cracking at the seam.
At Manterra, we specialize in maximizing the visual brilliance of SBC while preserving its structural flexibility. Because it is an amorphous polymer with excellent thermal stability, it allows us to run highly efficient production cycles that deliver pristine, high-gloss parts optimized for consumer-facing and medical packaging environments.
- Medical Devices: Clear diagnostic components, respiratory devices, trays, and durable medical packaging that require gamma or electron-beam sterilization.
- Display & Retail Packaging: High-end cosmetic cases, display boxes, clear clothes hangers, and protective covers for consumer goods.
- Toys & Novelties: Clear plastic toys, game components, and promotional items that must survive drops and rough handling.
- Housewares & Food Packaging: Clear tumblers, storage bins, refrigerator crisper trays, and lids with integrated flexible tabs.