| HS Code | 757998 |
| Base Polymer | PLA blend |
| Processing Method | Injection molding |
| Density | 1.25 g/cm³ |
| Melt Flow Rate 190 C 2 16 Kg | 20 g/10 min |
| Tensile Modulus | 3300 MPa |
| Tensile Strength | 50 MPa |
| Elongation At Break | 4% |
| Charpy Notched Impact Strength 23 C | 2.5 kJ/m² |
| Charpy Unnotched Impact Strength 23 C | 20 kJ/m² |
| Vicat Softening Temperature A | 60°C |
| Heat Deflection Temperature B | 55°C |
| Biobased Content | >80% |
| Biodegradability | Compostable according to EN 13432 |
| Processing Temperature | 170–190°C |
| Mold Temperature | 20–40°C |
| Drying Conditions | 2–4 hours at 70°C |
| Moisture Content Before Processing | <0.1% |
As an accredited Bio-Flex S 1110 Injection Molding Biodegradable PLA Blend factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Bio-Flex S 1110 comes in 25 kg sealed foil-lined bags, available on pallets or 1,000 kg bulk sacks. |
| Container Loading (20′ FCL) | 20′ FCL: Bio-Flex S 1110 Injection Molding Biodegradable PLA Blend pellets, palletized, shrink-wrapped, and secured for ocean transport. |
| Shipping | Bio-Flex S 1110 Injection Molding Biodegradable PLA Blend is shipped as non-hazardous thermoplastic resin pellets in sealed moisture-barrier bags, typically 25 kg, on pallets. No special transport placarding required. Keep dry, avoid excessive heat, direct sunlight, and contamination. Handle with standard industrial hygiene. Store in a cool, dry warehouse. |
| Storage | Store Bio-Flex S 1110 in a cool, dry, well-ventilated area away from direct sunlight, heat, and ignition sources. Keep material in sealed original packaging to prevent moisture absorption and contamination. Maintain ambient temperatures, avoid excessive humidity, and use first-in, first-out stock rotation. Protect from water, solvents, and incompatible materials. Follow the manufacturer’s safety data sheet for specific storage requirements. |
| Shelf Life | Shelf life is approximately 12 months in original unopened packaging, stored dry below 30°C, protected from moisture, heat, and direct sunlight. |
Competitive Bio-Flex S 1110 Injection Molding Biodegradable PLA Blend prices that fit your budget—flexible terms and customized quotes for every order.
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Bio-Flex S 1110 is an injection molding grade within the Bio-Flex S-series of biodegradable PLA-based compounds. The grade is formulated as a polylactic acid-based blend containing biodegradable copolyester constituents to reduce notch sensitivity relative to unmodified PLA while retaining sufficient stiffness for rigid molded parts. The product is supplied as cylindrical pellets and is intended for medium-flow injection molding applications such as technical clips, packaging closures, plant pots, and disposable consumer goods. Under industrial composting conditions, the material is designed to disintegrate and biodegrade in accordance with EN 13432:2000 and ASTM D6400-21; certification status for individual lots must be confirmed through the supplier’s certificate of conformity. Typical density is 1.24–1.26 g/cm³ when measured under ISO 1183-1, and the melt flow index is positioned in the range of 10–20 g/10 min at 190 °C under 2.16 kg load using ISO 1133-1. These flow properties enable short residence times in thin-wall sections, but they also require disciplined drying and cylinder temperature control because PLA-based esters are susceptible to moisture-induced hydrolytic chain scission.
The following matrix summarizes typical lot-release ranges used for incoming inspection. Values are not guaranteed design minima; the certificate of analysis for the individual production lot remains the normative source for acceptance testing.
| Property | Test standard | Typical range/unit |
|---|---|---|
| Density | ISO 1183-1 | 1.24–1.26 g/cm³ |
| Melt flow index | ISO 1133-1 | 10–20 g/10 min |
| Tensile strength at yield | ISO 527-2 | 40–50 MPa |
| Elongation at break | ISO 527-2 | 3–10% |
| Tensile modulus | ISO 527-2 | 3000–3800 MPa |
| Flexural modulus | ISO 178 | 3200–3600 MPa |
| Charpy notched impact strength at 23 °C | ISO 179-1/1eA | 2.0–4.0 kJ/m² |
| Vicat softening temperature | ISO 306/A50 | 55–65 °C |
| Residual moisture | Karl Fischer titration | <0.025 wt% |
Pre-drying is mandatory. Moisture contents above 0.05 wt% during molding promote autocatalytic hydrolysis of ester linkages, resulting in viscosity loss, splay, and reduced mechanical strength. Desiccant drying at 80 °C for 4 h to a dew point below -20 °C is specified in processing guides for this grade family. Hopper residence should not exceed 2 h without closed-loop dry-air supply or equivalent desiccant-bed hopper dryers.
The cylinder profile from rear to nozzle is typically 160 °C, 175 °C, 185 °C, and 190 °C, with the nozzle held at 185 °C. Melt temperature measured by needle pyrometer should remain between 180 °C and 200 °C. Mold temperature is normally 20–40 °C; higher mold temperatures improve surface gloss but increase cycle time. The cavity should be filled with medium to high screw speed to minimize premature solidification in thin sections.
In production trials on 120 t hydraulic injection molding machines with 30 mm three-zone screws and 20:1 L/D ratio, two failure modes were observed repeatedly. First, undried pellets produced silver streaks at gate areas and a drop in tensile strength from 45 MPa to 31 MPa within 8 h of hopper residence at 55% relative humidity. Second, melt temperatures above 210 °C caused yellowing and an upward shift in MFR of 3–5 g/10 min, indicating chain scission. Short shots occurred when mold temperature fell below 18 °C in wall sections below 1.2 mm, because the solidification front advanced before packing could compensate for volumetric shrinkage. These observations establish the practical lower and upper boundaries of the processing window.
Sprue and runner regrind from Bio-Flex S 1110 can be reintroduced if the material is re-dried to <0.025 wt% moisture and the regrind fraction does not exceed 20 wt% of total shot weight. Above 30 wt%, accumulative thermal exposure lowers molecular weight and increases MFR above the typical lot-release range. Comparative measurements under ISO 1133-1 have shown MFR shifts of 2–6 g/10 min after three heat histories at 195 °C. Tensile modulus measured according to ISO 527-2 declines by approximately 8–15% when regrind content exceeds 30 wt%, while notched Charpy impact under ISO 179-1/1eA may increase slightly because chain scission raises ductility at the expense of stiffness. Published data for this specific configuration is limited at regrind fractions above 50 wt%; such conditions require production-scale validation with molded plaques and mechanical testing under ISO 294-1.
The principal difference from unmodified PLA is not melt temperature but impact response and melt rheology. Bio-Flex S 1110 is compounded to shift the ductile-brittle transition to lower temperature while retaining a modulus above 3000 MPa. Compared with starch/PBAT compounds, the grade exhibits higher stiffness and better dimensional stability after ejection, but lower notched impact strength and lower elongation at break.
| Property | Bio-Flex S 1110 | Unmodified injection PLA | Starch/PBAT compound |
|---|---|---|---|
| Density | 1.24–1.26 g/cm³ | 1.24–1.26 g/cm³ | 1.25–1.35 g/cm³ |
| Melt flow index | 10–20 g/10 min | 5–15 g/10 min | 3–12 g/10 min |
| Notched Charpy impact at 23 °C | 2.0–4.0 kJ/m² | 1.5–2.5 kJ/m² | 5–15 kJ/m² |
| Tensile modulus | 3000–3800 MPa | 3400–4000 MPa | 300–1200 MPa |
| Heat distortion temperature | 50–60 °C | 50–55 °C | 40–50 °C |
| Industrial compostability reference | EN 13432 | EN 13432 | EN 13432 |
Applications are limited to industrial composting, not home composting, unless a specific home compost certification is stated on the lot documentation. Typical injection molded parts produced from Bio-Flex S 1110 include consumer packaging closures, plant pots, pens, toys, and technical clips. These applications exploit the compound’s stiffness and processability, not its thermal resistance. Continuous service temperatures above 50 °C should be avoided because heat distortion temperatures for PLA-based blends fall within the 50–60 °C range. Chemical resistance is typical of PLA esters: short-term contact with aliphatic hydrocarbons is acceptable, but prolonged exposure to alkaline cleaners and amine-based additives should be avoided. Contact with concentrated oxidizing acids and strong bases causes rapid surface etching and molecular degradation. Under EU REACH regulation 1907/2006, the grade is typically supplied as an article; the safety data sheet should be consulted for exposure scenarios. RoHS Directive 2011/65/EU restrictions on lead, mercury, cadmium, hexavalent chromium, PBB, and PBDE apply to electrical and electronic applications; supplier test reports should be requested because bio-based compounds do not automatically exempt compliance.
No blanket food-contact approval should be inferred from the product name or from industrial compostability certifications. For food-contact applications in the EU, compliance must be demonstrated under Regulation EU 10/2011 and its migration testing framework, including overall migration limits of 10 mg/dm² and specific migration limits for listed substances. For United States applications, FDA 21 CFR clearance depends on the final polymer composition and conditions of use. Published data for this specific configuration is limited; therefore, molders must obtain a written compliance letter from the material supplier and perform migration testing on the final article. Home-composting claims under NF T 51-800 or TÜV Austria certifications are separate from EN 13432:2000 industrial composting. Unless the grade carries a home-compost logo, disposal should be directed to industrial composting facilities operating at thermophilic temperatures above 58 °C.
Runner and gate dimensions should be designed for medium-viscosity melts. Cold runner diameters of 4–6 mm are adequate for multi-cavity tools up to 8 cavities; smaller runners increase shear heating and can shift MFR locally. Gate land lengths should not exceed 0.8–1.2 mm, with gate depths of 0.8–1.5 mm for edge gates. Vent depth should be controlled at 0.02–0.03 mm because the low-viscosity melt flashes through deeper vents. Vacuum-assisted venting or porous steel inserts are recommended for thin-wall parts below 1.0 mm wall thickness.
Hot runner systems require externally heated manifolds with uniform zone control and no dead spots. Because PLA-based compounds are thermally sensitive at high temperature, hot runner channels should be kept below 210 °C and purged after 10 min of interruption. If the machine is stopped for more than 15 min, the barrel should be cooled to 160 °C or purged with a purging compound to prevent caramelization. Ejector surfaces should have draft angles of 0.5–1.0° for textured surfaces and 0.2–0.5° for polished cores; PLA-based compounds can exhibit high ejection force when mold release is insufficient.
