| HS Code | 144403 |
| Vinyl Acetate Content | 28% |
| Melt Flow Rate 190 C 2 16 Kg | 10 g/10 min |
| Density | 0.950 g/cm³ |
| Melting Point Dsc | 70°C |
| Vicat Softening Point | 46°C |
| Shore Hardness | 81 Shore A |
| Tensile Strength At Break | 13 MPa |
| Elongation At Break | 800% |
| Flexural Modulus | 30 MPa |
| Brittleness Temperature | -76°C |
As an accredited Ateva 2810A Ethylene Vinyl Acetate Copolymer factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Ateva 2810A ethylene vinyl acetate copolymer is supplied as free-flowing pellets in 25 kg multi-layer paper bags. |
| Container Loading (20′ FCL) | Load 20' FCL with Ateva 2810A EVA copolymer in 25kg bags on pallets, approximately 20 metric tons, securely stowed. |
| Shipping | Ateva 2810A is a solid ethylene vinyl acetate copolymer supplied as pellets in sealed bags. Ship on standard pallets, keep dry, and avoid excessive heat or sunlight. No hazardous classification for transport, but use general freight handling with ventilation and personal protective equipment. |
| Storage | Store Ateva 2810A (EVA copolymer) in a cool, dry, well-ventilated area, away from direct sunlight, heat, and ignition sources. Keep containers tightly sealed to prevent moisture absorption and contamination. Avoid stacking too high. Under proper storage conditions, shelf life is typically 12 months. No special requirements beyond standard polymer handling. |
| Shelf Life | Store in a cool, dry place. Shelf life is typically two years from manufacture date when kept in original, unopened packaging. |
Hot-melt adhesive compounders evaluating Ateva 2810A for carton-sealing, bookbinding, and nonwoven lamination start from the resin's MFR of 10 g/10 min at 190°C under 2.16 kg load per ISO 1133-1:2022 and vinyl acetate content of 28 wt% per ASTM D5594; these two properties define the balance between melt viscosity, low-temperature flexibility, wax compatibility, and adhesion to polar board stock. In a high-speed corrugated packaging formulation, Ateva 2810A is metered at 20–40 wt% of total compound, blended with hydrogenated hydrocarbon tackifier resin at 30–50 wt%, paraffin or Fischer-Tropsch wax at 15–30 wt%, and a hindered phenolic/phosphite antioxidant package at 0.3–1.0 wt%; the antioxidant is required because the adhesive is held at 160–180°C in an insulated pre-melter for up to twenty-four hours during continuous packaging shifts, and viscosity drift at 180°C measured by ASTM D3236 is controlled within 800–2,500 mPa·s to avoid nozzle stringing through 0.2–0.5 mm dies. Compounding is executed in a jacketed sigma-blade mixer with counter-rotating blades at 30–60 rpm and batch temperatures of 150–170°C or in a co-rotating twin-screw extruder with L/D ratio 40:1–48:1 and screw speeds of 250–500 rpm, followed by direct slot-die coating or underwater pelletizing. Finished adhesive types include high-speed case and carton sealing compounds, perfect-bound bookbinding adhesives, and nonwoven positioning adhesives for disposable hygiene articles; indirect food contact status is supported by FDA 21 CFR 175.105 for adhesives, FDA 21 CFR 177.1350 for ethylene-vinyl acetate copolymers, EU 10/2011 as amended, and REACH (EC) No 1907/2006, while complete migration testing is carried out under OM2 or OM3 simulant conditions according to the finished packaging temperature profile.
| Standard / Test Method | Measured Property | Production Control Range |
|---|---|---|
| ISO 1133-1:2022 | MFR at 190°C / 2.16 kg | 10 g/10 min |
| ASTM D3236 | Melt viscosity at 180°C | 800–2,500 mPa·s after compounding |
| ASTM D36 | Ring-and-ball softening point | 85–110°C after compounding |
| FDA 21 CFR 175.105 | Adhesive indirect food contact | Compliant after migration test |
Photovoltaic encapsulant film made from Ateva 2810A is formulated with 100 parts by mass of copolymer, 0.6–1.2 parts by mass organic peroxide selected from tert-butyl peroxy-2-ethylhexyl carbonate or dicumyl peroxide, 0.2–0.5 parts by mass vinyltrimethoxysilane adhesion promoter, and 0.1–0.3 parts by mass combined hindered amine light stabilizer and antioxidant system; the silane coupling agent is necessary for wet adhesion to glass and backsheet after damp-heat exposure, while the peroxide concentration is limited by the need to avoid scorch during film extrusion. The compound is melt-blended in a co-rotating twin-screw extruder with barrel temperatures held below 100°C and melt temperature below 110°C, then cast through a gear pump and flat die onto an embossed chill roll at 60–85°C to produce film of 0.3–0.8 mm thickness; short residence time below two minutes minimizes premature peroxide decomposition that would create gel particles visible as surface defects. Lamination into a crystalline silicon module is conducted in a vacuum laminator at 145–160°C for 12–20 minutes, during which peroxide decomposes and gel content reaches 75–90% when measured by ASTM D2765-16; modules must then pass qualification sequences defined in IEC 61215-1:2021 for performance and IEC 61730-2:2016 for safety, including damp heat, thermal cycling, humidity freeze, and wet leakage current tests. The terminal finished product is the transparent encapsulant layer in monofacial and bifacial crystalline silicon modules, with additional use in thin-film module edge seals; however, Ateva 2810A is a base resin rather than a ready-to-laminate PV compound, so compounders must qualify UV stabilizer packages and confirm light transmittance and volume resistivity on the finished film, noting that published data for this specific resin in validated PV-grade formulations is limited to compound masterbatch systems rather than direct pellet-to-film processing.
Halogen-free flame-retardant cable sheathing compounds based on Ateva 2810A are used in low-voltage power cables for public buildings, data centers, and mass transit where low-smoke zero-halogen performance is specified. The base compound uses 100 parts by mass Ateva 2810A, 0–40 parts by mass linear low-density polyethylene or metallocene polyethylene as viscosity adjuster, 5–10 parts by mass polyethylene-grafted maleic anhydride compatibilizer, 120–200 parts by mass surface-treated aluminium trihydroxide, 1–2 parts by mass processing antioxidant, and 0.5–1.5 parts by mass zinc stearate as external lubricant; the Ateva 2810A content corresponds to 25–45 wt% of the polymer phase, while ATH occupies 50–65 wt% of the total compound. Mixing is carried out in a counter-rotating or co-rotating twin-screw extruder with L/D 32:1–44:1, first barrel zones at 130–150°C, downstream zones at 160–180°C, side feeding of ATH at zone 5 or 6 to avoid excessive shear heating, and underwater pelletization after vacuum venting; process alarms are set at 185°C because ATH begins to release water of hydration at 180–200°C, causing porosity and reduced mechanical strength. Finished cable sheathing is tested to IEC 60502-1 for power cables with rated voltages up to 1.8/3 kV, IEC 60332-1-2 for flame retardance of single insulated wire or cable, IEC 60754-1 and IEC 60754-2 for halogen acid gas content and pH conductivity, and EN 50363-5 for sheathing compounds in low-voltage installations; compliance with RoHS Directive 2011/65/EU and REACH (EC) No 1907/2006 is documented by absence of lead, cadmium, mercury, hexavalent chromium, PBB, and PBDE above homogenous material thresholds. Terminal finished products include LSZH sheathing for riser and plenum building cable, railway jumper cable jackets, and data-center power distribution cables where fire propagation and toxic emission limits are defined by project specifications.
Polymer-modified bitumen producers use Ateva 2810A at 2–5 wt% of the base bitumen mass when the final binder must exhibit storage stability and rutting resistance in heavy-duty road intersections, airport taxiways, and bridge deck waterproofing systems. The EVA pellets are added to penetration-grade 70/100 or 50/70 bitumen heated to 175–190°C in a vertical high-shear mixer or rotor-stator mill with tip speeds of 15–25 m/s, and mixing continues for 2–4 hours until the softening point measured by ASTM D36/D36M rises above 60°C and the penetration at 25°C measured by ASTM D5/D5M is reduced to the target grade; the process is maintained under inert or low-ventilation conditions because EVA degrades above 200°C through deacetylation and color development. No crosslinking agent is used, as the EVA forms a physical network through semi-crystalline domains that redissolve on heating, but storage stability requires vertical tanks with low-speed agitation at 160°C and continuous circulation to prevent phase separation. Conformance is documented under EN 14023:2010 for polymer-modified bitumen frameworks, using EN 12591 for base bitumen specification and associated CEN test methods, with North American projects additionally referencing ASTM D5/D5M and ASTM D36/D36M. Terminal products include PMB for airport runway overlay, heavy traffic asphalt concrete, Stress-Absorbing Membrane Interlayer, and polymer-modified mastic asphalt for bridge decks.
Microcellular midsole and sandal sheet production from Ateva 2810A is structured around the overlap between azodicarbonamide gas evolution and dicumyl peroxide crosslinking at 160–170°C. A standard expansion-graded formulation consists of 100 parts by mass Ateva 2810A, 2.0–4.0 parts by mass azodicarbonamide blowing agent, 0.5–0.8 parts by mass dicumyl peroxide, 0.5–1.5 parts by mass zinc oxide activator, and 0–20 parts by mass calcium carbonate or precipitated silica filler; zinc oxide lowers the decomposition onset of azodicarbonamide to match the peroxide cure exotherm, so batch-to-batch mixing temperature must not exceed 110°C to prevent premature gas loss. Mixing is carried out in an internal Banbury-type mixer at 100–120°C for 8–12 minutes, followed by a two-roll mill at 80–90°C to form a uniform sheet, then compression molding in a multi-opening hydraulic press at 160–170°C under 12–15 MPa for 8–12 minutes per 10 mm of final thickness; the press cycle is the critical control point because a temperature deviation of ±5°C changes the balance between crosslink density and cell coalescence, producing either collapsed foam or torn cell walls. Finished sheets are measured for density according to ISO 845, with typical values between 0.15 and 0.30 g/cm³, compression set after 50% strain according to ASTM D395 Method B, and hardness according to ISO 868 with Shore C values between 45 and 70; consumer footwear compounds are reviewed against REACH (EC) No 1907/2006 and RoHS Directive 2011/65/EU, while azodicarbonamide decomposition residues require post-cure off-gassing and compliance with California Proposition 65 labelling. Terminal finished product types include die-cut midsoles, molded insoles, shock-absorbing sandal bottoms, and industrial anti-fatigue mats where lightweight and flex fatigue resistance are specified.
Masterbatch producers use Ateva 2810A as a high-polarity carrier for flame-retardant and mineral-filled concentrates because its 28 wt% vinyl acetate content provides better wetting of aluminium trihydroxide, magnesium dihydroxide, titanium dioxide, and calcium carbonate than polyethylene carriers at comparable melt flow rates. The carrier is dosed at 30–45 wt% of the masterbatch formulation, with active filler or pigment at 55–70 wt%, polyethylene wax or oxidized polyethylene wax dispersant at 2–5 wt%, and a processing stabilizer at 0.1–0.5 wt%; the exact ratio is adjusted so that the finished masterbatch MFR at 190°C under 2.16 kg according to ISO 1133-1:2022 remains above 5 g/10 min for downstream metering accuracy. Compounding is executed in a co-rotating twin-screw extruder with L/D ratio of 44:1–52:1, side stuffing of the filler at zone 5 or 6, barrel temperatures of 120–180°C, screw speeds of 300–600 rpm, and underwater pelletizing with water temperature below 10°C to prevent pellet agglomeration; the specific energy input for 70 wt% ATH masterbatch is monitored to keep melt temperature below 185°C and prevent moisture release from filler surfaces. Terminal products include flame-retardant masterbatches for halogen-free cable compounds, mineral-filled polyolefin masterbatches for automotive interior parts, and TiO2 concentrates for low-gel blown films; regulatory data include REACH (EC) No 1907/2006 and RoHS Directive 2011/65/EU for heavy metal content, while food-contact film applications additionally require the converter to verify migration limits under EU 10/2011 or FDA 21 CFR 177.1350 depending on target polymer matrix.
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Ateva 2810A Ethylene Vinyl Acetate Copolymer is a pelletized thermoplastic supplied for injection moulding and compounding where a balance of flexibility, melt flow, and polar adhesion is required. The product is identified by a vinyl acetate comonomer content of 28 wt% and a melt mass-flow rate of 10 g/10 min when measured at 190 °C under 2.16 kg according to ISO 1133-1:2022 and ASTM D1238-20. Representative density is 0.950 g/cm³ by ISO 1183-1:2019; the melting endotherm peak occurs at 73 °C by differential scanning calorimetry under ISO 11357-3. Shore A hardness is 80 by ISO 868:2003, tensile strength at break is 13 MPa with elongation at break of 800% by ISO 527-2, and Vicat softening temperature is 47 °C by ISO 306 A50. These representative values are taken from the manufacturer’s technical data sheet; lot-specific values are recorded on the certificate of analysis.
| Property | Typical value | Test method |
|---|---|---|
| Vinyl acetate content | 28 wt% | ASTM D5594-18a |
| Melt mass-flow rate | 10 g/10 min at 190 °C/2.16 kg | ISO 1133-1:2022 / ASTM D1238-20 |
| Density | 0.950 g/cm³ | ISO 1183-1:2019 |
| Melting peak | 73 °C | ISO 11357-3 |
| Shore A hardness | 80 | ISO 868:2003 |
| Tensile strength at break | 13 MPa | ISO 527-2 |
| Elongation at break | 800% | ISO 527-2 |
| Vicat softening temperature | 47 °C | ISO 306 A50 |
Compared with EVA grades of lower vinyl acetate content, the 28 wt% comonomer fraction reduces crystalline ordering and increases segmental mobility; compared with higher vinyl acetate grades, the copolymer retains measurable crystalline domains at service temperature and exhibits lower surface tack. The melt mass-flow rate of 10 g/10 min positions the product for thin-wall injection moulding, whereas grades with melt mass-flow rate below 4 g/10 min are typically selected when melt strength is required for blown film extrusion or foam expansion. The product differs from ethylene-rich copolymers in its higher solubility for polar additives and greater filler-wetting capability, which is exploited in compounding and masterbatch carrier resin applications.
In capillary rheometry using a die with L/D 30:1 at 190 °C, the shear-thinning response of Ateva 2810A is governed by the short-chain branching introduced by the vinyl acetate copolymerization. The apparent viscosity at shear rates above 100 s⁻¹ is low enough to permit filling of moulds with wall sections of 1.2–2.0 mm when the injection screw maintains a shot cushion of 3–5 mm. At melt temperatures above 210 °C, deacetylation becomes significant; the resulting acetic acid release can corrode unprotected tool steels and produce surface splay. Published data for the specific deacetylation onset of this grade by ISO 11358-1 is limited, but the practical upper melt temperature is constrained by acid generation rather than viscosity alone. The melt elasticity is lower than that of a 4 g/10 min grade of the same comonomer content; this reduces die swell but also reduces parison stability in blow moulding. A mould temperature of 20–40 °C is normally required to prevent sink marks at gate impingement zones.
Production-scale handling of Ateva 2810A does not require desiccant drying unless condensation has formed on the pellet surface. In a silo or vacuum unloading system, the resin temperature should be allowed to equilibrate to the production environment before conveying to avoid surface moisture adsorption; if the air dew point exceeds 15 °C, a hopper-dryer at 50 °C for 2 h is used before processing. On a co-rotating twin-screw extruder with screw diameter 25–40 mm, L/D ratio 36:1–48:1, and screw speeds of 200–400 min⁻¹, the polymer melts at a specific mechanical energy demand in the range of 0.18–0.25 kWh/kg. Overheating at the die plate is controlled by using breaker plates with 40–60 mesh screens; pressure fluctuations above 15% indicate filler agglomerates or melt-temperature variation and require a reduction in throughput or screw speed. Strand pelletizing is stable when the water-bath temperature is kept between 20 °C and 35 °C; lower temperatures induce surface stress cracking of the pellet, while higher temperatures cause strand sticking and pellet agglomeration.
For injection moulding, a general-purpose screw with compression ratio 2.5:1–3.0:1 and length-to-diameter ratio of 20:1–24:1 is sufficient; high-shear mixing elements are not normally required because the copolymer exhibits a low melt temperature and low viscosity. A back pressure of 5–15 bar and an injection speed of 30–80 cm³/s are typical starting conditions for parts with a flow length-to-wall-thickness ratio up to 250:1. The material should be processed with a cushion of 3–5 mm; insufficient cushion produces density variation and surface flow lines. Mould shrinkage measured on 4 mm plaques under ISO 294-4 is typically 1.0–1.5% in the flow direction and 0.8–1.2% across flow; the degree of anisotropy increases with higher injection speed and lower mould temperature. Parts ejected at surface temperatures above 35 °C may stick in cores with draw angles below 1°; release is improved with a mould surface finish of VDI 3400 texture class 24 or better and a silicone-free external release. If a hot-runner system is used, the manifold temperature should not exceed 200 °C and residence time should be limited to 5 min to suppress acetic acid formation.
The substitution of Ateva 2810A for an 18 wt% vinyl acetate grade alters low-temperature flexibility, tensile modulus, and interfacial adhesion. The lower crystallinity of the 28 wt% comonomer resin reduces the storage modulus at −20 °C as measured by dynamic mechanical analysis under ISO 6721-6; the material also retains flexibility where the 18 wt% grade may show brittle crack formation in notched impact testing. However, tensile strength and creep resistance are lower, and the part may require increased wall thickness if the same mechanical load is applied. The higher vinyl acetate content increases the solubility parameter of the polymer; adhesion to polar substrates such as epoxy-based primers, alkyd coatings, or polyamide inserts is typically improved, although adhesive bond strength is system-specific. In footwear midsoles, the influence of vinyl acetate content on foam density and rebound is greater than the influence of melt flow index; therefore, a switch from an 18 wt% grade to Ateva 2810A should be accompanied by a re-evaluation of blowing-agent loading and cure temperature. Published data for the specific combination of Ateva 2810A with azodicarbonamide-based chemical blowing agents is limited; preliminary differential scanning calorimetry and capillary rheometry trials are required to define the optimum foaming temperature window. In halogen-free flame-retardant compounds, the higher vinyl acetate content improves filler dispersion of aluminium trihydrate and magnesium hydroxide, but the resulting compound has a lower heat deflection temperature under load and a narrower extrusion window.
For solvent-borne lamination and wire-and-cable compounding, the influence of vinyl acetate monomer distribution becomes critical. In lamination, the peel strength of Ateva 2810A films bonded to polyurethane adhesives is controlled by adhesive type, film corona treatment, and lamination temperature; no universal value can be assigned. In semiconductive compounds, volume resistivity below 100 Ω·cm is attainable only with high-structure carbon black grades and sufficient twin-screw dispersive mixing; the base resin contributes to carbon black dispersion but does not independently guarantee conductivity. In masterbatch carrier applications, the melt mass-flow rate of 10 g/10 min allows a let-down ratio of 20:1–50:1 for low-viscosity polyolefins, but the vinyl acetate content can limit compatibility with polypropylene and high-density polyethylene; co-extrusion or co-injection moulding with incompatible layers requires a tie resin.
Compliance with food-contact regulations for Ateva 2810A is not automatically conveyed by the polymer type; the converter must verify the finished article under the relevant end-use conditions. The base resin can be assessed against FDA 21 CFR 177.1350 for ethylene-vinyl acetate copolymers and against European Commission Regulation (EU) 10/2011 for plastic materials intended for food contact. The specific migration limit applicable to vinyl acetate monomer under (EU) 10/2011 is 12 mg/kg. The product is manufactured without phthalate plasticizers, bisphenol A, or heavy-metal-based pigments. For articles sold in the European Union, REACH registration is the responsibility of the importer or resin producer; for electrical and electronic equipment, RoHS Directive 2011/65/EU Annex II substances are not intentionally introduced. The product should not be combined with amine-based additives where prolonged high-temperature service may generate coloured condensation products; this is an operational boundary, not a regulatory prohibition. Users should request a dual declaration from the resin supplier if the final part is intended for repeated food contact or medical packaging; the base pellet alone does not provide a finished-article compliance statement.
| Requirement | Assessment basis | Typical verification method |
|---|---|---|
| Food contact, United States | FDA 21 CFR 177.1350 | Supplier migration data and finished-article extraction |
| Food contact, European Union | (EU) 10/2011 | EN 1186-1:2002 migration testing |
| Heavy metals | RoHS 2011/65/EU Annex II | XRF screening and IEC 62321 |
| Phthalate plasticizers | REACH Annex XVII entries 51–52 | GC-MS after solvent extraction |
| Vinyl acetate monomer | (EU) 10/2011 SML | HPLC or GC-FID |
Operational boundaries are defined by acetic acid release at excessive melt temperature, condensation-driven moisture pickup on cold pellets, and the lower melt strength relative to grades with melt mass-flow rate below 4 g/10 min. The copolymer is not suitable for prolonged service above 60 °C under continuous load without crosslinking or structural support, because creep deformation increases with vinyl acetate content. When stored at temperatures below 30 °C in dry conditions, the pellet remains processable for extended periods; however, lot-to-lot melt flow index variation should be checked against ISO 1133-1:2022 before high-speed automated moulding campaigns.
