| HS Code | 786456 |
| Product Name | EcolGreen EGP-300 Nano-Composite Biodegradable Film Grade |
| Material Composition | PLA/PBAT/thermoplastic starch/nanoclay composite |
| Processing Temperature C | 160-190 |
| Seal Initiation Temperature C | 95-110 |
| Compostability Certification | EN 13432, ASTM D6400 |
| Thickness Range Micron | 10-100 |
As an accredited EcolGreen EGP-300 Nano-Composite Biodegradable Film Grade factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied in 25 kg moisture-resistant, foil-lined sacks on pallets, EcolGreen EGP-300 Nano-Composite Biodegradable Film Grade resin for industrial film production. |
| Container Loading (20′ FCL) | 20′ FCL container loaded with EcolGreen EGP-300 Nano-Composite Biodegradable Film Grade, palletized, moisture-protected, labeled, and secured for safe ocean shipment. |
| Shipping | EcolGreen EGP-300 Nano-Composite Biodegradable Film Grade is typically shipped as a non-hazardous solid in sealed, moisture-barrier 25 kg bags or 1000 kg supersacks on pallets. Transport in clean, dry vehicles at ambient temperature. Protect from moisture, heat, direct sunlight, and physical damage. Avoid dust generation; follow local regulations and SDS requirements. |
| Storage | Store EcolGreen EGP-300 in its original sealed packaging in a cool, dry, well-ventilated area. Protect from moisture, direct sunlight, heat, ignition sources, and strong oxidizers. Keep pallets off the floor, maintain low humidity, and avoid prolonged UV exposure. Use first-in, first-out stock rotation. Reseal opened bags promptly. Follow supplier SDS and local regulations. |
| Shelf Life | EcolGreen EGP-300 shelf life: typically 24 months when stored unopened, cool, dry, and away from direct sunlight and moisture. |
Lines manufacturing certified organic waste collection liners with EcolGreen EGP-300 Nano-Composite Biodegradable Film Grade generally configure blown film towers for three-layer coextrusion where the nano-composite is carried in the core layer at 25 wt% to 35 wt% of total film weight, with PBAT-rich skin layers. The core loading is reduced to 20 wt% when the converter runs a high-slip surface formulation because platelet orientation alters machine-direction tear propagation measured under ISO 6383-2. Certification audits under EN 13432:2000, ASTM D6400, ISO 17088 and AS 4736 treat the finished liner as the test article, not the resin alone; thus the addition ratio is fixed before plant-scale certification, and any subsequent change above 5 wt% triggers re-testing of disintegration kinetics.
The typical extrusion line uses a grooved-feed single-screw extruder with L/D 30:1 to 34:1 and a barrier screw, melt temperature 155 °C to 170 °C, die gap 1.4 mm to 1.8 mm, blow-up ratio 2.6:1 to 3.2:1, and frost line height 600 mm to 800 mm. Moisture above 250 ppm produces melt fracture at the die lip; if ambient relative humidity exceeds 60%, the resin should be pre-dried at 60 °C for 4 h with a desiccant dryer supplying air at -40 °C dew point. Downstream conversion includes inline gusseting, perforation, and heat sealing at 90 °C to 120 °C with dwell 0.5 s to 1.0 s.
| Compliance criterion | Test method | Typical specification |
|---|---|---|
| Biodegradation | ISO 14855-1 | ≥ 90% relative to cellulose within 180 days |
| Disintegration | ISO 16929 | ≥ 90% of material retained on a 2 mm sieve after 12 weeks |
| Ecotoxicity | OECD 208 | No significant adverse effect relative to control |
| Heavy metals | EN 13432:2000 Annex A | Below specified maximum concentrations |
Terminal product types include reinforced kitchen caddy liners, curbside organics collection bags, and institutional compostable waste sacks. Acceptable thickness ranges from 18 µm to 70 µm depending on service load.
Because soil-biodegradable mulch film must retain puncture resistance during transplanting and weed suppression for 6 to 12 weeks before soil incorporation, EGP-300 is compounded at 15 wt% to 25 wt% in the middle layer of a three-layer blown film structure, leaving the soil-contact layer rich in PBAT for biodegradation initiation. The formulation must satisfy EN 17033:2018, which does not permit ozone-degradable additives and requires aerobic biodegradation in soil measured under ISO 17556:2019 or ASTM D5988-18, with a maximum test duration of 24 months and no negative impact on plant growth. Because the nano-composite raises melt viscosity, the processing window narrows; production-scale runs indicate a melt temperature band of 155 °C to 165 °C is required, with excursions above 170 °C causing molecular weight loss by hydrolysis and excursions below 150 °C increasing bubble instability and die lines.
Extrusion is typically monolayer or three-layer blown film at 10 µm to 25 µm thickness and width up to 1.8 m, using a grooved-feed extruder with L/D 30:1 to 36:1, die gap 1.0 mm to 1.6 mm, and blow-up ratio 2.0:1 to 2.6:1. Internal bubble cooling is required at gauge below 15 µm to sustain bubble stability. When black mulch is specified, a biodegradable carbon-black dispersion masterbatch is added at 3 wt% to 8 wt%, but the total carbon black content must not exceed the level that reduces soil biodegradation below the pass threshold. Pre-drying at 60 °C for 4 h is mandatory when resin moisture exceeds 300 ppm; hydrolysis at the die lip creates gel flecks that reduce film tensile strength measured under ISO 527-3 and increase rejected rolls.
Terminal product types include mulch films for tomato, pepper, cotton, and maize production, as well as biodegradable vineyard floor covers and nursery ground cover.
Drawdown stability below 12 µm is governed by melt strength and the orientation of the nano-composite platelets during high-stalk blown film extrusion; EGP-300 is added at 20 wt% to 30 wt% to raise zero-shear viscosity without increasing gel content. The finished bag must still meet EN 13432:2000 or ASTM D6400 for industrial compostability, alongside mechanical requirements under ISO 7765-1 dart impact and ISO 6383-2 Elmendorf tear. In practice, converters measure dart drop by ASTM D1709 method A on film at 10 µm to 15 µm, and tear anisotropy is monitored during bag conversion to prevent skewed seal failure.
A high-stalk bubble with frost line height 800 mm to 1,000 mm, blow-up ratio 3.0:1 to 4.0:1, die gap 0.8 mm to 1.2 mm, and melt temperature 145 °C to 155 °C is typical. Excessive melt temperature reduces stalk stability; an overlong frost line freezes in orientation that raises film haze and increases transverse-direction tear. The converter must avoid silicone-based anti-block at addition above 1,500 ppm because it interferes with heat sealing and water-based flexographic printing. Bubble collapse frames with hard phenolic slats are preferred over roller collars to reduce surface scratches on thin film. Downstream bag making uses bottom-seal or side-weld machines with seal temperature 90 °C to 115 °C and dwell 0.3 s to 0.6 s.
Terminal product types include roll-mounted produce bags, checkout bags, and lightweight retail bags; thickness ranges from 10 µm to 20 µm.
When food-contact dry-goods film is converted on a cast line, EGP-300 addition is typically held to 5 wt% to 15 wt% of total film weight to reduce overall migration and preserve organoleptic neutrality; the final structure, not the resin, is subject to EU 10/2011 Article 15 and EC 1935/2004. In this application, the film is coextruded with a PLA-rich food-contact layer, and EGP-300 is placed in the core or non-contact layer. Overall migration under test condition OM2 (40 °C, 10 days) must remain below 10 mg/dm²; specific migration of nano-composite additives is assessed under EU 10/2011 Annex II. Published data for specific US FDA clearance of this nano-composite configuration is limited, so converters serving US dry-goods markets typically obtain migration testing on the finished structure.
Cast film extrusion uses a barrier screw with L/D 30:1, melt temperature 160 °C to 175 °C, die gap 0.6 mm to 0.9 mm, and a chill roll at 20 °C to 30 °C. Because the nano-composite can increase melt viscosity, the die lip temperature is set 5 °C higher than the barrel profile to reduce die lines. Edge trim from the cast line is reintroduced into the core layer at up to 10 wt% regrind, provided the regrind is dried and free of printed material; higher regrind levels reduce optical clarity and increase gel count. Downstream conversion includes center-fold winding, perforation, and heat sealing at 95 °C to 125 °C.
Terminal product types include bread bags, bakery films, dry-snack overwrap, and paperboard window lamination films.
On compostable mailer lines, puncture resistance is measured by ASTM D5748 or DIN 53326, and EGP-300 is compounded at 20 wt% to 35 wt% to meet puncture resistance targets at thicknesses between 50 µm and 90 µm. The final mailer must satisfy EN 13432:2000 or ASTM D6400; disintegration is evaluated by ISO 16929 and biodegradation by ISO 14855-1. REACH Annex XVII restrictions apply to specific additives, and substances of very high concern are avoided in the film formulation.
Production uses three-layer coextrusion with a core layer carrying the EGP-300 and ABA skins providing sealability and printability. Melt temperature is maintained at 155 °C to 168 °C, die gap 1.2 mm to 1.6 mm, and blow-up ratio 2.5:1 to 3.0:1. After film winding, flexographic printing with water-based inks is used, followed by adhesive lamination with compostable adhesives; the laminate must be re-tested as a finished article because adhesives and inks alter disintegration. Seal strength is evaluated under ASTM F88, with hot-tack windows of 5 °C to 10 °C requiring precise jaw temperature control.
Terminal product types include compostable e-commerce mailers, garment mailers, and padded mailer film facings.
Haze and gloss are secondary in compostable pet waste film; puncture resistance and odor-containment shelf stability dominate. EGP-300 is added at 20 wt% to 30 wt% in three-layer coextrusion, with a core layer containing acid scavengers at 0.5 wt% to 1.0 wt% to suppress ester hydrolysis. Compliance under EN 13432:2000 and ASTM D6400 is required, and the film is tested for disintegration by ISO 16929. Puncture resistance is characterized by ASTM D5748; Elmendorf tear by ISO 6383-2.
Production uses a conventional blown film line with grooved feed, L/D 30:1, die gap 1.2 mm to 1.5 mm, blow-up ratio 2.8:1 to 3.2:1, thickness 15 µm to 25 µm, and melt temperature 150 °C to 160 °C. Because the film is wound and stored in roll form before bag conversion, anti-blocking agent is necessary; converters typically use mineral-free formulations to avoid heavy-metal limits under EN 13432:2000 Annex A. Downstream bag making uses bottom-seal machines with seal temperature 90 °C to 120 °C.
Terminal product types include dog waste pick-up bags, pet waste liners, and litter disposal bags.
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EcolGreen EGP-300 is a melt-compoundable nano-composite biodegradable film grade supplied as cylindrical granules. The product is based on a polyester blend matrix containing a dispersed platelet-type nano-filler, and it is intended for blown film and cast film conversion lines where industrial compostability is required. Manufacturer-reported typical properties include a melt flow rate of 3.5 g/10 min at 190 °C under 2.16 kg load according to ISO 1133-1:2022, and a density of 1.26 g/cm³ measured to ISO 1183-1:2019. The grade is formulated to support down-gauging of film structures while retaining tear and sealing performance. Unlike post-added nanoclay masterbatches that require secondary dilution and can introduce screw-slippage variation, EGP-300 incorporates the nano-filler during compounding before pelletizing. Application areas include compostable mailer films, produce bags, agricultural mulch, and flexible packaging requiring certification to EN 13432:2000 or ASTM D6400-23. Independent peer-reviewed data for this specific configuration is limited; the numerical values in this document are manufacturer-reported representative values and should be confirmed against lot-specific certificates of analysis.
On single-screw blown film lines with 30:1 L/D and barrier screws, EGP-300 reaches stable bubble formation when melt temperature is maintained between 160 °C and 185 °C. The upper limit is governed by polyester degradation rather than by nano-filler thermal stability. At melt temperatures above 190 °C, residual moisture above 250 ppm accelerates chain scission and produces a measurable decrease in zero-shear viscosity, resulting in bubble wander and gauge bands. A recommended barrel profile is feed zone 150 °C, compression zone 165 °C, metering zone 175 °C, and die head 175 °C. Die gap is specified from 1.2 mm to 1.8 mm, with blow-up ratio between 2.2:1 and 3.5:1. Frost-line height should be kept within 2 to 4 die diameters. The platelet orientation changes with draw-down ratio and blow-up ratio, which alters machine-direction tear propagation and film haze. Capillary rheometry at 170 °C shows a shear-thinning index from 100 s⁻¹ to 1000 s⁻¹ of 0.62, lower than the 0.71 typical of unfilled PBAT, indicating higher shear sensitivity and lower die pressure at high throughput. Production-scale experience has identified die lip build-up as a recurring failure mode when melt temperature falls below 160 °C; the deposit is attributed to incomplete melting of the higher-melting polyester fraction and is removed by raising barrel setpoints by 5 °C while holding die temperature constant. Melt-pressure fluctuation greater than ±8 bar is observed when volumetric output is forced outside the air ring stability range, leading to surface haze and blocking. In cast film conversion, chill roll temperature should be maintained at 18–30 °C and air gap at 10–20 cm; edge pinning requires adjustment because the nano-composite exhibits higher melt elasticity than unfilled PBAT.
Moisture uptake of EGP-300 granules under ambient warehouse conditions at 23 °C and 50 % relative humidity reaches 0.25 wt% within 8–12 h if bags are left open. Pre-drying is therefore mandatory before film extrusion. Desiccant drying at 70 °C for 4 h with a dew point below −40 °C is specified to reduce water content below 250 ppm as measured by ISO 15512:2019. Hopper drying alone is insufficient when plant relative humidity exceeds 60 %; a closed hopper loader with dried air purge is required under these conditions. Storage stability is 12 months in unopened moisture-barrier bags. Opened bags should be re-sealed and used within 24 h because the nano-filler surface increases polar interaction with humidity. The grade is incompatible with amine-based additives, which accelerate transesterification and chain scission of the polyester matrix. Amine-containing antifog agents, purge compounds, and slip masterbatch carriers should be excluded. Dry blending with polyvinyl alcohol is also discouraged because the viscosity mismatch and interfacial tension produce gel-like defects in cast and blown film.
For fresh produce bags, EGP-300 is converted at 20–25 µm gauge with a target seal initiation temperature of 95 °C on side-seal and bottom-seal machines. Seal strength at 120 °C, 0.2 MPa pressure, and 0.5 s dwell is 8 N/15 mm when tested to ASTM F88/F88M-21. The film maintains a haze value of 12 % at 25 µm measured to ASTM D1003-21, which is acceptable for display packaging but higher than unfilled PBAT films. In agricultural mulch applications, the nano-filler increases puncture resistance under stone load, but ultraviolet exposure below 400 nm accelerates surface carbonyl index; field service life depends on carbon black or light-stabilizer addition. For compostable mailer films, down-gauged film at 15 µm exhibits dart impact of 110 g per ASTM D1709-16a Method A. Values below 80 g indicate insufficient dispersion or excessive regrind degradation. Regrind addition is limited to 20 wt% because repeated extrusion raises carboxyl end-group concentration and reduces melt stability. At addition levels above 20 wt%, bubble instability and seal-strength variability become process-conflict thresholds rather than cosmetic defects.
When EGP-300 is down-gauged from 25 µm to 12 µm, tensile elongation in the machine direction does not decline linearly with thickness. Manufacturer-reported data show elongation at break of 320 % at 25 µm falling to 180 % at 12 µm, while dart impact drops from 110 g to 45 g. The plateau effect at 20–25 µm is attributed to the oriented nano-platelet network bridging micro-voids that form during bubble stretching. Below 15 µm, network continuity is lost and filler-matrix interfaces become stress concentrators. Processors should not extrapolate linear relationships from thicker film data. The critical gauge threshold for barrier properties is 18 µm; below this, oxygen transmission rate at 23 °C and 0 % RH measured to ASTM D3985-24 increases from 850 cm³/(m²·d·bar) at 25 µm to 1500 cm³/(m²·d·bar) at 12 µm. Water vapor transmission rate follows a similar non-linear pattern and should be verified on the actual film structure because sealant layers and printing primers alter moisture flux.
Table 1. Manufacturer-reported typical film properties for EGP-300 at 25 µm.
| Property | Value | Test Method |
|---|---|---|
| Melt flow rate at 190 °C, 2.16 kg | 3.5 g/10 min | ISO 1133-1:2022 |
| Density | 1.26 g/cm³ | ISO 1183-1:2019 |
| Tensile strength at break, MD/TD | 34/28 MPa | ISO 527-3:2018 |
| Elongation at break, MD/TD | 320/260 % | ISO 527-3:2018 |
| Elmendorf tear strength, MD/TD | 12/16 N/mm | ISO 6383-2:1983 |
| Dart impact strength | 110 g | ASTM D1709-16a |
| Seal initiation temperature | 95 °C | ASTM F1921/F1921M-18 |
| Biodegradation mineralization | 90 % in 180 d | ISO 14855-1:2012 |
| Disintegration | 90 % below 2 mm in 12 weeks | ISO 16929:2021 |
| Bio-based carbon content | 68 % | ASTM D6866-22 |
Compared with unfilled PBAT, EGP-300 exhibits higher low-strain modulus and lower die swell, which supports tighter gauge control across the web. However, the nano-filler raises melt viscosity at low shear rates; start-up on direct-drive extruders should therefore use a higher-melt-index purge resin to avoid over-torque. Compared with PLA homopolymer, EGP-300 has lower tensile modulus and substantially higher elongation, making it suitable for flexible film without oriented post-processing. PLA homopolymer typically has tensile modulus above 2000 MPa and elongation below 10 %, while EGP-300 at 25 µm shows secant modulus of 680 MPa and elongation of 320 %. Compared with starch-filled compostable films, EGP-300 exhibits lower moisture sensitivity and more stable seal strength after aging at 40 °C for 90 d. Starch-filled films may show better home-composting behavior, whereas EGP-300 is certified for industrial composting unless a specific home-compost lot certificate is issued. The bulk density of EGP-300 is 0.78 g/cm³, which supports higher throughput in gravimetric dosing units than lower-bulk-density starch compounds. Differences in processing behavior, barrier retention, and sealing cannot be inferred from melt flow rate alone because the nano-composite morphology changes under shear and extensional flow.
Table 2. Comparative typical values for film property screening; values vary by supplier and film construction.
| Property | EGP-300 | Unfilled PBAT | PLA Homopolymer | Starch-Filled Blend |
|---|---|---|---|---|
| Tensile strength MD, 25 µm, ISO 527-3:2018 | 34 MPa | 22 MPa | 60 MPa | 18 MPa |
| Elongation at break MD, 25 µm | 320 % | 550 % | 6 % | 300 % |
| Dart impact, 25 µm, ASTM D1709-16a | 110 g | 90 g | 30 g | 70 g |
| Seal initiation temperature | 95 °C | 85 °C | 105 °C | 90 °C |
| Moisture uptake, 23 °C, 50 % RH, 24 h | 0.25 wt% | 0.15 wt% | 0.4 wt% | 0.9 wt% |
Compliance documentation should be verified for each lot. EGP-300 is formulated to meet the disintegration, biodegradation, and ecotoxicity requirements of EN 13432:2000 and ASTM D6400-23, with no intentionally added perfluoroalkyl substances. The grade is not recommended for sustained contact with acidic foods below pH 4.5 at elevated temperatures unless specific migration testing is completed under conditions of use described in FDA 21 CFR 176.170. REACH and RoHS compliance statements cover heavy metals and short-chain chlorinated paraffins. The nano-filler is a naturally occurring layered silicate surface-treated with an organo-modifier; no free nanoparticles are expected in the final film, although published migration data for this specific configuration are limited. For food-contact structures below 20 µm, processors should request supplier migration kinetic data. The product should not be combined with amine-containing antifog agents. For printing and lamination, corona treatment above 42 mN/m is required and should be performed inline because surface energy decays within 24 h at 50 % RH.
