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How to Choose the Right Color Masterbatch for Biodegradable Blown Film Products
- June 9, 2026
Choosing a suitable biodegradable color masterbatch is the key to producing flawless, certified, and high-performance compostable blown films. Ordinary PE or PP color masterbatches are not compatible with degradable resins and often cause film breakage, bubble instability, surface defects, precipitation, and even failure of biodegradation tests. Since PBAT, PLA, PBS, and PHA feature different processing temperatures, toughness, and film-blowing characteristics, each resin system requires a targeted color masterbatch solution.
Biodegradable Blown Film Material Comparison
| Material | Flexibility | Transparency | Degradation Condition | Cost | Single-Material Blown Film Availability |
|---|---|---|---|---|---|
| PBAT | ★★★★★ | ★★★☆☆ | Industrial composting | Medium-High | Not available |
| PLA | ★★☆☆☆ | ★★★★★ | Industrial composting | Medium | Not available |
| PBS | ★★★★☆ | ★★★☆☆ | Industrial / Home composting | High | Available for small-batch production |
| PHA | ★★★★☆ | ★★★☆☆ | Seawater / Soil / Home composting | Very high | Available |
| Starch Filler | ★★★☆☆ | ★★☆☆☆ | Industrial composting | Lowest | Not available |
Color Masterbatch Selection for PBAT-Based Blown Films
- PBAT is the main flexible component for degradable films, featuring high toughness, high elongation, and stable film blowing. It is soft, ductile, and widely used for bags and mulch films.
- Choose PBAT-carrier biodegradable color masterbatch. It delivers ultra-fine dispersion to avoid spinneret clogging and bubble piercing during high-speed film blowing. The masterbatch maintains PBAT’s original flexibility and tear resistance, ensuring smooth film surface without streaks or fish eyes.
- Recommended application
- Shopping bags, garbage bags, flexible packaging films, agricultural mulch films
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Color Masterbatch Selection for PLA-Based Blown Films
- PLA provides high stiffness, high transparency, and gloss, but is brittle and low in elongation. PLA-dominant films are prone to cracking and poor fluidity during processing.
- Use PLA-compatible high-transparency biodegradable masterbatch. Formulated with low-impact additives, it prevents film brittleness and cracking. It preserves high light transmittance and improves printing performance, without generating dust or particle aggregation.
- Recommended application
- High-clear packaging films, apparel bags, food packaging films
Color Masterbatch Selection for PBS / PBSA Blown Films
- PBS offers balanced toughness and rigidity, better heat resistance and home composting performance, suitable for special climate and temperature-resistant films.
- Adopt high-temperature resistant and home-compostable color masterbatch. It matches PBS’s processing temperature tolerance and guarantees stable coloring in long-term continuous production. Fully home-compostable formula ensures no residue in soil or household compost environments.
- Recommended application
- Heat-resistant packaging, home-compostable films, low-temperature resistant agricultural films
Color Masterbatch Selection for PHA High-End Degradable Films
- PHA supports seawater, soil and home compost degradation, with superior barrier performance, widely used for high-standard export eco-products.
- Must use full bio-based PHA compatible color masterbatch. Zero harmful additives, zero migration, and no influence on seawater degradation performance. It meets the strictest EU and international eco-friendly standards for premium-grade degradable films.
- Recommended application
- Seawater degradable films, medical packaging, high-end export eco-films
Our Professional Biodegradable Color Masterbatch Advantages
- PBAT/PLA/PBS dedicated carriers ensure perfect compatibility with different blown film formulas
- Ultra-Fine Dispersion: No pinholes, no bubble breakage, stable for high-speed film blowing production
- No Performance Loss: Does not affect film toughness, transparency, heat-sealing strength and ductility
- Stable Color Fastness: Anti-migration, anti-fading, suitable for indoor and outdoor film products
- Customizable Solutions: Glossy, matte, transparent, black, white, and special color matching available
Mature Mass-Production Formulas for Biodegradable Blown Films
- General Shopping Bags & Takeaway Bags (Best Cost-Effectiveness)
- PBAT 60% + PLA 30% + Starch 10% + Compatibilizer
- Thickened Kitchen Waste Bags (High Toughness & Puncture Resistance)
- PBAT 65% + PLA 25% + Starch 10%
- High-Transparency Food Packaging Films
- PBAT 55% + PLA 35% + Calcium Carbonate 10% (No excessive starch to ensure high transparency)
- Low-Cost Agricultural Mulch Films
- PBAT 25% + PLA 25% + PHA 20% + Calcium Carbonate 30% (UV-resistant with controllable degradation cycle)
- High-End Seawater-Degradable Export Films
- PHA 70% + PBAT 30% (Starch-free and calcium carbonate-free formula)
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