| HS Code | 704970 |
| Productname | Ateva 2810A EVA Copolymer Resin |
| Polymertype | Ethylene-Vinyl Acetate (EVA) Copolymer |
| Applicationgrade | Hot Melt Adhesive Grade |
| Vinylacetatecontent | 28 wt% |
| Meltflowindex | 6 g/10 min (190°C/2.16 kg) |
| Density | 0.950 g/cm3 |
| Meltingpoint | 72°C |
| Vicatsofteningpoint | 53°C |
| Glasstransitiontemperature | -34°C |
| Elongationatbreak | 700% |
| Tensilestrength | 7.0 MPa |
| Hardness | 87 Shore A |
As an accredited Ateva 2810A EVA Copolymer Resin,28% VA,6 MI,Hot Melt Adhesive Grade factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Ateva 2810A EVA copolymer resin is supplied in 25 kg bags as free-flowing pellets on pallets, ensuring safe handling and storage. |
| Container Loading (20′ FCL) | Loading 20′ FCL of Ateva 2810A EVA resin: place sealed bags on pallets, secure tightly, protect from moisture and heat. |
| Shipping | Ateva 2810A EVA copolymer resin is shipped as solid pellets in 25 kg bags, octabins, or similar packaging, palletized and stretch-wrapped. It is non-hazardous for transport but should be kept dry and protected from excessive heat. Container shipment is standard, with proper labeling and documentation for safe handling. |
| Storage | Store Ateva 2810A EVA copolymer resin in a cool, dry, well-ventilated area, away from direct sunlight, heat, sparks, open flames, and strong oxidizers. Keep containers tightly closed and protected from moisture to prevent clumping. Avoid dust accumulation; use grounded equipment to minimize static hazards. Ideal storage temperature is below 50°C. |
| Shelf Life | Shelf life is typically two years from manufacture when stored unopened, cool, dry, and away from direct heat and sunlight. |
Ateva 2810A is metered into heated reservoir tanks on high-speed case erectors and carton sealers, then delivered through gear pumps to slot nozzles. The resin contributes a nominal 28% vinyl acetate content and a nominal melt mass-flow rate of 6 g/10 min measured to ASTM D1238-20 at 190 °C and 2.16 kg. Starting formulations for corrugated case sealing commonly contain 25–35 wt% Ateva 2810A, 35–50 wt% hydrogenated rosin ester or aliphatic-aromatic C5/C9 tackifier, 15–30 wt% paraffin or Fischer-Tropsch wax, and 0.3–0.8 wt% hindered phenolic antioxidant with a phosphite costabilizer. Application temperature is held at 160–180 °C; bead weight is set between 0.5 g/m and 1.5 g/m depending on flute profile and recycled board porosity. Compression pressure of 0.2–0.6 MPa is applied for 0.5–2 s to obtain fibre-tearing bonds. Packaging adhesives used as indirect food-contact materials are evaluated under 21 CFR 175.105 in the United States and under EU 1935/2004 in Europe; converter-specific migration testing governs the final package. The terminal products are sealed corrugated cases, trays, and cartons.
Pot life is the main process conflict. The 28% vinyl acetate content improves wetting on polar paper and recycled board surfaces, but it also increases sensitivity to deacetylation during prolonged heating. At reservoir temperatures above 190 °C, acetic acid elimination accelerates, producing acidic vapour that can corrode carbon-steel tanks and generate carbonaceous deposits in heated hoses and nozzle tips. Production lines with continuous melters and nitrogen purge exhibit slower viscosity drift than open unblanketed tanks. Brookfield Thermosel viscosity is measured to ASTM D3236; packaging-grade hot melts are typically qualified in the 500–1,500 mPa·s range at 180 °C to maintain clean cut-off and acceptable transfer efficiency. If viscosity rises above the equipment-specific nozzle pressure limit, bead placement becomes irregular and T-peel results under ASTM D1876 drop below fibre-tear levels. When line stoppages exceed 15–20 min, the setpoint is reduced to 160–170 °C; if char particles are observed, reservoirs and filters are flushed before restart. Compliance screening also includes REACH SVHC checks and RoHS where packaging carries electronic accessories.
In perfect-binding lines running coated text stock at mechanical speeds between 3,000 cycles/h and 12,000 cycles/h, Ateva 2810A is combined with rosin ester tackifiers and microcrystalline or Fischer-Tropsch waxes to form a spine glue with controlled open time and penetration. A typical starting formulation is 30–40 phr Ateva 2810A, 30–45 phr rosin ester, 5–15 phr Fischer-Tropsch wax, 0.2–0.5 phr hindered phenolic antioxidant, and 0–10 phr paraffin to adjust elongation. The adhesive is held at 150–165 °C in a wheel pot or roller applicator; applied spine thickness ranges from 0.3 mm to 0.8 mm. Open time must exceed the interval between spine application and cover attachment but remain short enough to prevent blocking after pressing. Page-pull and T-peel tests are run to ASTM D1876 and ASTM D903; cohesive paper failure indicates that the adhesive bond exceeds the internal strength of the signature. Compliance is governed by REACH and printer-specific VOC limits; no direct food-contact standard applies to bookbinding adhesives. The terminal products are perfect-bound books, catalogs, magazines, and trade wire-bound publications.
Roll-coater dead zones at the doctor bar and return lines respond poorly to extended hold above 180 °C when Ateva 2810A is compounded with filler. Edge-banding formulations commonly contain 35–45 wt% Ateva 2810A, 30–40 wt% rosin ester or modified hydrocarbon tackifier, 10–20 wt% calcium carbonate, 5–15 wt% paraffin or Fischer-Tropsch wax, and 0.3–1.0 wt% antioxidant. The filler raises viscosity and reduces penetration into MDF edges; the wax controls open time and set speed. At 180–200 °C, char formation in dead zones is the primary process limitation. Shear heating at the doctor bar and return line can generate local temperatures above the reservoir setpoint, accelerating deacetylation and oxidation. The resulting carbonaceous particles produce coating weight variation of more than ±10 g/m² on panel edges. Lines use adhesive-specific gear pumps and heated hoses with internal static mixers to maintain temperature uniformity within ±2 °C. Viscosity is checked to ASTM D3236 before start-up.
Application to PVC, ABS, or PET edge tape requires panel preheat to 35–60 °C and line speeds of 8–25 m/min in furniture production. The melt must bond simultaneously to the edge band polymer and the MDF core without visible bond line; open time is set so that pressure from the pressure zone or pinch roller produces edge tape adhesion before solidification. Heat resistance is tested by WATT 91 or equivalent heat resistance test, with failure temperatures often specified above 80–90 °C for kitchen furniture. Room-temperature T-peel is measured to ASTM D1876; substrate tear is preferred. European interior woodworking adhesives are referenced to EN 204/D3 and EN 12765; CARB and TSCA requirements apply at supplier level. The terminal products are edge-banded panels, desk tops, cabinet doors, and shelving.
For halogen-free low-smoke cable sheathing and insulation, Ateva 2810A can be used as the base resin or as a co-resin with low-density polyethylene. The 28% vinyl acetate content provides high acceptance of alumina trihydrate and magnesium dihydrate fillers, but the 6 g/10 min melt flow index limits extrusion speed when filler loading exceeds 150 phr. Starting compounds contain 100 phr EVA, 120–180 phr alumina trihydrate, 5–15 phr zinc borate, 1–3 phr antioxidant, and 0.5–1.5 phr processing aid. Mixing is carried out in a twin-screw extruder with L/D 40:1 and barrel setpoints from 130 °C to 160 °C. The upper limit is set by alumina trihydrate decomposition, which releases water near 180–200 °C; running zones above 160 °C with long residence time creates surface porosity and poor dispersion. Screw torque and die pressure are monitored continuously; a torque rise above the equipment-specific limit indicates filler dispersion failure or metal hydrate decomposition. The compound is pelletized under cooling and dried to <0.05% moisture before extrusion into cable sheathing.
Compounds are tested to IEC 60754-1 and IEC 60754-2 for halogen gas and acidity, ASTM D2863 for limiting oxygen index, and EN 50645 for construction products. Mechanical properties are screened using ASTM D638-14 tensile bars. The terminal products are low-smoke zero-halogen sheathing, bedding compounds, and insulation mats for building wire and data cables. The polar vinyl acetate content improves filler wetting but reduces weathering resistance compared with polyethylene; outdoor cable formulations add UV stabilizers and carbon black. Published data for specific extrusion outputs using Ateva 2810A as the sole base resin in LSZH formulations are limited.
| Standard / method | Property or test | Data use in compounding |
|---|---|---|
| IEC 60754-1 | Halogen gas evolution | Material classification |
| IEC 60754-2 | Acidity, pH and conductivity of combustion gases | Pass/fail for LSZH claim |
| ASTM D2863 | Limiting oxygen index | Flame retardance screening |
| EN 50645 | Reaction to fire for cables | Construction products context |
| ASTM D638-14 | Tensile strength and elongation | Mechanical quality control |
Interior laminating operations using Ateva 2810A rely on the polar vinyl acetate segments to wet polyurethane foam and polyester fabric. Starting automotive interior lamination adhesives contain 25–35 wt% Ateva 2810A, 25–40 wt% APAO or hydrogenated tackifier, 10–20 wt% wax, 0–5 wt% filler, and 0.3–0.8 wt% antioxidant. The melt is applied at 160–190 °C through a slot die or spiral spray head, followed by nip lamination at 0.2–0.5 MPa. Open time must be short enough to prevent smearing but long enough to wet the fabric before the nip. Bond strength is tested by ASTM D1876 T-peel; automotive producers generally require cohesive failure within the foam when the bond is pulled. Fogging is measured to ISO 6452 or DIN 75201, and VOC emissions are evaluated using VDA 278 thermal desorption; OEM-specific limits are applied to the finished laminate. REACH SVHC and RoHS compliance are required for the adhesive and the laminated assembly. The terminal products are door panels, seat backs, headliners, and interior trim laminates.
When a profile-wrapping line exceeds 25 m/min, the adhesive must transfer from the slot applicator to the profile surface and set before the next process unit. Ateva 2810A is compounded for profile wrapping with 30–40 wt% resin, 30–45 wt% rosin ester or aliphatic tackifier, 10–20 wt% paraffin or Fischer-Tropsch wax, 0–5 wt% calcium carbonate, and 0.3–0.8 wt% antioxidant. The melt is held at 170–190 °C and applied to preheated MDF, aluminium, or PVC profiles. Preheating to 40–60 °C extends the working window. The laminated film is pressed by counter-rollers at 0.2–0.5 MPa; edge adhesion is checked by ASTM D1876 T-peel and by heat resistance testing at 80 °C for furniture profiles. Compliance references EN 204/D2 or EN 204/D3 for non-structural wood adhesives, plus REACH and national VOC regulations. The terminal products are film-wrapped profiles for doors, windows, skirting boards, and furniture moldings.
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Hot-melt adhesive compounding for carton sealing, bookbinding, edge banding, profile wrapping, and film laminating frequently uses ethylene-vinyl acetate copolymers as base resins because the vinyl acetate comonomer introduces polar sites that improve wetting on paper, board, polyester, aluminum, and polyvinyl acetate-coated surfaces. Ateva 2810A is a hot-melt adhesive grade EVA copolymer resin with a vinyl acetate content of 28 wt% and a melt index of 6 g/10 min, determined at 190°C under 2.16 kg load in accordance with ASTM D1238-20. The resin is positioned between low-VA packaging grades and high-VA specialty adhesives; its density is reported as approximately 0.950 g/cm³ by ASTM D1505-18. The 28% vinyl acetate level reduces polyethylene crystallinity and lowers the softening point relative to 18–19% VA EVA, while the 6 g/10 min melt index provides moderate viscosity for slot-die, wheel, and gear-pump hot-melt application equipment. In compounded form, this grade is generally used with rosin ester or terpene phenolic tackifiers, paraffin or Fischer-Tropsch waxes, and hindered-phenol–phosphite stabilizer packages.
Ateva 2810A may be processed in heated sigma-blade mixers of 100–500 kg batch capacity or co-rotating twin-screw extruders with L/D ratios of 40:1 or greater. Jacket temperatures of 150–170°C and screw speeds of 200–400 min⁻¹ are representative for filled adhesive compounds; vacuum venting at -0.08 MPa reduces entrapped volatiles. Because the base resin contains 28% vinyl acetate, fully aliphatic C5 hydrocarbon tackifiers may phase-separate when present above 15–20 wt% of the tackifier fraction, whereas rosin ester and terpene phenolic resins generally form clear single-phase melts. Wax addition reduces viscosity and controls open time; antioxidant starting levels of 0.1–0.3 wt% hindered phenol and 0.1–0.2 wt% phosphite are common, but stabilizer consumption should be confirmed by ASTM D3895-19 oxidative induction time on the compounded adhesive. These processing parameters are not unique to Ateva 2810A, but the 28% VA content requires that resin and tackifier polarity be matched to prevent phase separation and peel-strength scatter.
Neat resin morphology is semicrystalline, but the crystallinity is significantly reduced by the 28% vinyl acetate content. Differential scanning calorimetry by ASTM D3418-21 typically reveals a broad melting endotherm rather than a sharp polyethylene melting peak, which aids hot-tack development on board and wood substrates. The crystallinity also influences pellet blocking tendency; cool storage below 40°C and protection from direct sunlight are recommended to minimize agglomeration during warehouse storage.
Vinyl acetate groups act as polar hydrogen-bonding sites that improve adhesion to cellulosic and polyester substrates. Increasing VA from 18% to 28% reduces crystallinity, shifts the melting endotherm downward, and increases compatibility with polar tackifiers. In hot-melt adhesives, these changes typically raise peel adhesion on clay-coated board and polyethylene terephthalate film when tested by ASTM D1876-08, while reducing heat resistance and tensile strength compared with lower-VA EVA. The adhesive open time is not defined by the base resin alone; it results from viscosity, wax concentration, substrate thermal diffusivity, and bead size. In 1.0 mm bead packaging trials, set times of 0.5–1.5 s are common for EVA hot-melt systems, depending on wax type and substrate temperature. Exact values for Ateva 2810A are formulation-specific and should be generated on the intended application line.
The 28% VA content also affects low-temperature flexibility. Polymer compositions with higher vinyl acetate content, such as 33–40%, remain flexible at lower temperatures but may show pressure-sensitive behavior, lower creep resistance, and higher retention of tack. At 28%, the resin generally retains sufficient cohesive strength for packaging and woodworking adhesives while providing better polar adhesion than 18% VA grades. Published EVA data indicate that glass transition temperatures for 28–33% VA copolymers fall below -20°C, contributing to low-temperature bond flexibility; however, exact values for Ateva 2810A should be measured on the fully compounded adhesive because tackifiers and waxes shift the final thermal and rheological response. Because adhesion is formulation-dependent, bond performance should be verified with ASTM D3163-01 shear tests or ASTM D4498-07 shear adhesion failure temperature on the complete compounded formulation. Published data for Ateva 2810A alone on all film substrates are limited; comparative trials are required when replacing an existing EVA grade or a functionalized polyolefin.
The melt index of 6 g/10 min at 190°C places Ateva 2810A in a working viscosity band that can be applied via gear-pump or wheel systems without the high pressures typical of 2 g/10 min resins. In parallel, it is less stringy and more cohesive than 25–30 g/10 min sprayable EVA grades. Hot-melt applicators with heated hoses and gear pumps commonly transfer these formulations at 160–180°C; pressures below 50 bar are typical when the formulation contains 20–30 wt% wax and has an apparent viscosity between 800 mPa·s and 2,500 mPa·s at 175°C as measured by ASTM D3236-15. For high-speed spiral-spray applications, a blend with a higher-MI EVA or a reduction in wax molecular weight may be required to reach the lower viscosity window.
In lamination and profile wrapping, the 6 g/10 min melt index contributes to controlled penetration into paper or nonwoven surfaces. Too low a melt index can lead to high pumping torque and poor substrate wet-out at standard application temperatures; too high a melt index can cause over-penetration on porous substrates and reduced bond-line thickness. Ateva 2810A is therefore selected for applications that need moderate open time and bond-line cohesion rather than maximum flowability. The exact viscosity response should be measured at multiple shear rates because EVA hot-melts are non-Newtonian; ASTM D3236-15 provides a single-temperature comparison but not full shear-rate data.
Carton sealing operations commonly use heated melter units with gear pumps and multiple heated nozzles. On a line running at 40–60 m/min, bead diameters of 0.3–0.5 mm and application temperatures of 160–175°C are typical. Ateva 2810A with a 6 g/10 min melt index can produce a controlled bead that penetrates corrugated board sufficiently for fiber tear but does not strike through. For bookbinding, roller application at 170°C and 2–5 g/m² adhesive coverage on uncoated spine board is a common starting point; the 28% VA content improves adhesion to the fiber surface and helps the adhesive accept folded paper without cold flow in the final book block.
Edge-banding and profile-wrapping lines use slot-die or roller coaters at 180–200°C for higher-viscosity EVA blends. The moderate melt index of Ateva 2810A can be used when compounded with 25–35 wt% tackifier and 20–30 wt% wax; the adhesive must maintain a bond line at line speeds of 10–30 m/min and resist edge lift in hot environments. Heat resistance is measured by shear adhesion failure temperature under ASTM D4498-07; edge-banding formulations based on 28% VA EVA generally show lower shear adhesion failure temperature than 18% VA grades but better adhesion to polyester and melamine-faced panels.
| Resin variable | Vinyl acetate content | Melt index | Polar substrate adhesion | Heat resistance | Typical application temperature |
|---|---|---|---|---|---|
| Ateva 2810A | 28 wt% | 6 g/10 min | High | Moderate | 150–180°C |
| Lower-VA EVA | 18–19 wt% | 6 g/10 min | Moderate | Higher | 170–200°C |
| Higher-VA EVA | 33–40 wt% | 6 g/10 min | Very high | Lower | 130–160°C |
| Higher-MI EVA | 28 wt% | 25 g/10 min | High | Moderate | 130–160°C |
| Lower-MI EVA | 28 wt% | 2 g/10 min | High | Moderate-high | 170–200°C |
The above comparison is qualitative and reflects general EVA hot-melt grade behavior; exact values should be confirmed from supplier datasheets and formulated product testing. It is used here to distinguish Ateva 2810A from lower-VA, higher-VA, higher-MI, and lower-MI alternatives, not to define pass/fail specifications.
Thermal stability of EVA hot-melt formulations is a critical boundary. EVA undergoes deacetylation when heated too long or too hot; degradation products include acetic acid, which can corrode aluminum or steel tooling and create voids in the bond line. The onset of decomposition is often reported near 200°C, so processing in heated tanks above 190°C should be minimized. Nitrogen blanketing of the melt tank is recommended when hold times exceed 4 hours. A stabilizer system containing 0.1–0.3 wt% hindered phenolic antioxidant and 0.1–0.2 wt% phosphite is commonly added; residual oxidative induction time should be measured by ISO 11357-6:2024 or ASTM D3895-19. Contact with copper or copper alloys in heated hoses, nozzles, or probes above 170°C should be avoided because copper ions accelerate EVA radical chain degradation. These constraints are general to EVA; production-scale validation with Ateva 2810A is necessary because residence-time distribution, tank surface-to-volume ratio, and stabilizer distribution affect the onset of yellowness and peel-strength loss.
Compared with metallocene polyolefin elastomers, Ateva 2810A provides intrinsic polarity without grafted maleic anhydride; this simplifies adhesion to polar cellulosic and polyester surfaces but limits high-temperature bond service above 120–130°C. Compared with APAO-based adhesives, EVA formulations typically show higher tensile strength and faster set, but may require more precise temperature control and are less compatible with nonpolar polyolefin films. Published data for direct substitution of Ateva 2810A in specific polyolefin-elastomer or APAO formulations is limited; replacement trials should compare viscosity, set time, ASTM D1876-08 peel, and ASTM D4498-07 shear adhesion failure temperature under identical application conditions.
For food-packaging applications, EVA copolymers may be used as components of adhesives under 21 CFR 175.105 when the compounded adhesive meets the end-use limitations and migration requirements. Ateva 2810A as supplied is not a finished adhesive; compliance with FDA status, REACH, and RoHS must be re-evaluated on the formulated product. The unfilled resin is typically supplied in pellet form and should be stored below 40°C and protected from direct sunlight to minimize agglomeration. At storage relative humidity above 60%, pre-drying at 60–70°C for 2–4 hours is advisable before compounding when vented equipment is not available, particularly for filled formulations where entrapped moisture can generate porosity and reduce bond integrity.
Application testing for Ateva 2810A should include immediate and aged evaluations because hot-melt adhesives can lose adhesion at the adhesive–substrate interface or within the adhesive layer. Peel measurements on board, film, and coated substrates should be conducted by ASTM D1876-08; shear resistance should be measured by ASTM D3163-01 or ASTM D4498-07; and melt viscosity should be checked by ASTM D3236-15 before and after 24 hours of heat aging in a laboratory oven at 170°C. No single test method captures the full performance envelope; simultaneous comparison with the current production formulation on the same application line is the most reliable basis for grade substitution.
