| HS Code | 396052 |
| Vinyl Acetate Content | 3.5 wt% |
| Melt Flow Rate | 0.75 g/10 min at 190°C/2.16 kg |
| Density | 0.924 g/cm³ |
| Melting Point | 106 °C |
| Crystallization Temperature | 88 °C |
| Vicat Softening Point | 84 °C |
| Brittleness Temperature | -70 °C |
| Tensile Strength At Break | 24 MPa |
| Elongation At Break | 700% |
| Flexural Modulus | 100 MPa |
| Shore D Hardness | 44 |
| Haze | 5% |
| Gloss 45 | 60 |
As an accredited ELEVATE EF563 Ethylene Vinyl Acetate Copolymer factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | ELEVATE EF563 EVA copolymer supplied as pellets in 25 kg bags for safe, efficient handling. |
| Container Loading (20′ FCL) | 20′ FCL: EVA copolymer pellets packed in 25kg bags on shrink-wrapped pallets, loaded and secured for safe transport. |
| Shipping | ELEVATE EF563 Ethylene Vinyl Acetate Copolymer ships as solid pellets in heat-sealed polyethylene bags or bulk containers. Protect from moisture, excessive heat, and direct sunlight during transit. Standard non-hazardous freight classification applies; keep dry, ventilate storage, and avoid compression or puncture to preserve product integrity. |
| Storage | Store ELEVATE EF563 Ethylene Vinyl Acetate Copolymer in a cool, dry, well-ventilated area, away from direct sunlight, heat sources, and open flames. Keep containers tightly sealed to prevent moisture uptake and contamination. Avoid conditions that could generate dust accumulations. Use proper grounding during handling. Maintain stable temperatures to preserve flow properties and prevent degradation. |
| Shelf Life | Store in a cool, dry place away from sunlight. Shelf life is typically two years from date of manufacture. |
ELEVATE EF563 ethylene vinyl acetate copolymer functions as the primary peroxide-curable matrix in photovoltaic encapsulant films. Where the grade is specified in encapsulant lines with vinyl acetate incorporation in the 28–33 wt% range, addition levels observed on production-scale cast-film lines are 60–85 wt% ELEVATE EF563, 0.5–1.2 phr 1,2-bis(tert-butylperoxyisopropyl)benzene, 0.3–0.8 phr vinyltrimethoxysilane, 0.1–0.4 phr hindered amine light stabilizer, and 0.05–0.2 phr phenolic antioxidant. Published data for ELEVATE EF563 under this specific configuration is limited; the following process values represent industrial EVA encapsulant grades in the same vinyl acetate interval. Compounding is executed on a co-rotating twin-screw extruder with an L/D ratio of 44:1, barrel temperatures from 70 °C at feed to 90 °C at die, and screw speed held below 250 rpm because peroxide decomposition exotherms can generate gel nuclei when shear heating exceeds 120 °C. Melt is cast through a flat die with gap 0.8–1.2 mm onto chill rolls at 20–40 °C before cleanroom winding. Lamination is conducted between glass and backsheet at 140–150 °C for 15–20 min; gel content after lamination is commonly 70–85% by ASTM D2765, and adhesion to glass is assessed by ASTM D1876 with peel strength values above 60 N/cm considered acceptable for double-glass modules.
Compliance for this segment rests on IEC 61215-1:2021 for module design qualification, IEC 61730-1:2023 for photovoltaic module safety, UL 1703 for North American flat-plate modules, and IEC 61215-2:2021 for qualification test sequences. Optical transmittance after lamination is measured by ASTM D1003, with retention limits commonly specified at ≥90% after 1000 h damp heat exposure at 85 °C and 85% RH. The operational boundary is narrow: pre-drying at 60 °C for 4 h is required when storage relative humidity exceeds 60%, lamination should not exceed 160 °C to avoid acetic acid evolution from vinyl acetate cleavage, and direct contact with iron or copper stearates is avoided because transition metal ions catalyse oxidative degradation. Terminal articles include monofacial glass-backsheet modules, double-glass bifacial modules, building-integrated photovoltaic laminates, and thin-film photovoltaic edge seals.
ELEVATE EF563 is incorporated as the polar base polymer in hot melt formulations for packaging and converting. Addition levels on slot-die coating lines range from 25–40 wt% ELEVATE EF563, 30–50 wt% hydrogenated rosin ester or C5/C9 tackifier, 10–20 wt% Fischer-Tropsch wax, 0.2–0.5 wt% hindered phenolic antioxidant, and 0–15 wt% calcium carbonate or talc filler. Open time is measured by ASTM D4497, melt viscosity by ASTM D3236, and softening point by ASTM E28. When vinyl acetate content moves above 28 wt%, open time extends because the amorphous vinyl acetate segments suppress ethylene crystallinity and slow recrystallization during cooling; the corresponding decrease in cohesive strength restricts upper service temperature to 50–70 °C depending on wax selection.
Production mixing is performed in a vertical double-arm mixer or anchor-agitated vessel at 160–180 °C under nitrogen. Failure modes on prolonged residence include viscosity increase, gelation, and surface skinning from vinyl acetate degradation; batch reactors should not exceed 4 h total residence time at melt temperature above 170 °C. Application through a slot-die coater is typically run at 150–170 °C with die pressures below 60 bar; pumping through gear pumps with clearances under 100 µm can generate shear heating that accelerates degradation. Compliance for food-contact packaging adhesives includes FDA 21 CFR 175.125 for adhesive components and FDA 21 CFR 177.1350 for ethylene-vinyl acetate copolymers intended for food contact, alongside REACH EC 1907/2006 and RoHS 2011/65/EU for hazardous substance restrictions. Terminal article types are case and carton sealing, bookbinding, edge-banding, nonwoven hygiene construction, and pressure-sensitive label adhesion where the hot melt is used as a secondary bonding layer.
Crosslinked foam midsoles represent a second production segment in which ELEVATE EF563 is blended for flexural stability and controlled cell nucleation. Addition ratios in compression-molded midsole compounds generally fall at 30–45 phr ELEVATE EF563, 10–20 phr EPDM, 15–25 phr calcium carbonate, 2.5–4.5 phr azodicarbonamide, 0.6–1.0 phr dicumyl peroxide, 0.5–1.5 phr zinc oxide/zinc stearate activator, and 0.2–0.5 phr phenolic antioxidant. The blowing agent decomposition onset near 160 °C interacts with the dicumyl peroxide half-life of approximately 1 min at 170 °C, forcing a single-step expansion and cure cycle. Compound preparation uses an internal mixer at a fill factor of 0.75–0.85, followed by two-roll milling at 80–110 °C to distribute curatives. Compression molding is executed at 165–175 °C for 5–8 min; the resulting foam density is 0.15–0.25 g/cm³ and hardness is 50–70 Asker C.
Compliance for global footwear trade relies on ISO 20871 for abrasion, ISO 17707 for flexing fatigue, REACH EC 1907/2006 for chemical substances, and California Proposition 65 for potential exposure warnings. Azodicarbonamide decomposition residues are subject to evolving EU restrictions under REACH Annex XVII; processors should verify current status before using this blowing system. The critical processing boundary is the upper mold temperature of 180 °C because excessive temperature causes cell coalescence, surface scorch, and tear strength loss measured by ASTM D624. Batches should be stored below 25 °C to limit bloom migration of curatives. Terminal products include athletic running shoe midsoles, cross-training outsoles, orthotic insoles, and slip-on sandals.
Halogen-free cable sheath compounds use ELEVATE EF563 to supply polarity, char formation, and high filler loading tolerance. Addition levels in production twin-screw compounding are 20–35 wt% ELEVATE EF563, 10–20 wt% LLDPE or metallocene polyethylene, 45–65 wt% aluminium hydroxide or magnesium dihydroxide, 1–2 wt% organosilane coupling agent, 0.2–0.8 wt% antioxidant, and 0.5–1.5 wt% process stabilizer. The filler threshold at 40 wt% separates moderate-viscosity compounds from systems requiring increased torque and longer distributive mixing. Above 60 wt% filler, melt pressure during pelletizing can exceed 300 bar and the risk of screen pack blinding rises sharply; a gear pump before the die and an automatic screen changer with 150 µm mesh are typically installed to manage throughput.
Compounding is conducted on a co-rotating twin-screw extruder with L/D 44:1 and barrel temperatures from 160 °C to 200 °C. The compounded pellets are then applied as cable insulation or sheath on a single-screw wire coating line at die temperatures of 180–210 °C. Compliance is verified against IEC 60754-1 for halogen acid gas, IEC 61034-2 for smoke density, IEC 60332-1-2 for vertical flame spread, and EN 50618 for photovoltaic cable durability.
| Standard | Measured parameter | Typical requirement |
|---|---|---|
| IEC 60754-1 | Halogen acid gas emission | <0.5% HCl equivalent |
| IEC 61034-2 | Smoke transmittance | >60% |
| IEC 60332-1-2 | Vertical flame char height | <425 mm |
| EN 50618 | Low-temperature bend | No cracking at -40 °C |
Operational boundaries include pre-drying of the filler at 80 °C for 4 h if ambient humidity exceeds 60% RH, and limitation of residence time at melt temperatures above 200 °C to prevent surface pitting from moisture release. Terminal products are photovoltaic cable sheaths, railway rolling stock cables, automotive high-voltage cables, and building wires requiring halogen-free performance.
ELEVATE EF563 is used as a carrier resin in color and additive masterbatches where the VA comonomer improves pigment wetting and dispersion without the low-molecular-weight migration observed with wax-based carriers. Addition levels in masterbatch formulations are 60–85 wt% ELEVATE EF563, 15–40 wt% organic or inorganic pigment, 0.5–5 wt% processing aid, and 0.1–0.3 wt% antioxidant. The melt flow ratio between carrier and the target polyolefin should be maintained within 0.8–1.2 to avoid visible flow lines in injection molded parts; viscosity is measured by ASTM D1238 and ISO 1133-1:2022. Dispersion quality is evaluated by filter pressure rise under EN 13900-5, with a maximum pressure increase of 3 bar per 100 kg of masterbatch processed.
Production is performed on a co-rotating twin-screw extruder with L/D 44:1, screw speed 400–600 rpm, and barrel temperature from 120 °C at feed to 180 °C at die. Strand pelletizing is preferred over underwater pelletizing when hygroscopic pigments are used because residual surface moisture can generate voids in subsequent film processing. Compliance for masterbatches entering food-contact plastics relies on EU 10/2011 for plastic materials intended for food contact and FDA 21 CFR 177.1520 for olefin polymers where the carrier remains within specified extraction limits. Terminal article types include color masterbatches for blown film, injection molding, blow molding, and agricultural mulch film.
In polymer-modified bitumen for waterproofing membranes and road crack sealants, ELEVATE EF563 functions as a thermoplastic modifier that raises softening point and reduces flow at elevated pavement temperatures. Addition levels are 3–7 wt% of total bitumen compound, with high-shear mixing at 175–190 °C for 2–4 h using a rotor-stator disperser. Compatibility between the EVA phase and bitumen is process-dependent; if mixing temperature falls below 170 °C, the polymer may not fully disperse, while above 200 °C oxidative aging accelerates and softening point drift becomes measurable. Compliance for polymer-modified bitumen includes EN 13707 for roofing felts, ASTM D6084 for elasticity recovery, and ASTM D7173 for separation tendency during storage. Terminal products include modified bitumen roofing membranes, bridge deck waterproofing sheets, and crack-sealant fillers for asphalt pavements.
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ELEVATE EF563 Ethylene Vinyl Acetate Copolymer is a pelletized statistical copolymer of ethylene and vinyl acetate, supplied under the ELEVATE polymer brand. The grade designation EF563 identifies the product within the EVA series, but the designation alone does not encode vinyl acetate weight fraction or melt flow rate; those values must be obtained from the supplier’s lot certificate before barrel-temperature and screw-speed selection. In the EVA product envelope, melt flow rate measured under 2.16 kg at 190°C according to ISO 1133-1:2022 can range from 0.3 g/10 min to 800 g/10 min, density by ASTM D1505 generally lies between 0.92 g/cm³ and 0.98 g/cm³, and DSC melting peaks by ASTM D3418-21 span 40°C to 110°C depending on comonomer content. The vinyl acetate units reduce crystallinity relative to low-density polyethylene, which lowers flexural modulus, improves low-temperature flexibility, and increases adhesion to polar substrates. Published third-party measured data for EF563 specifically are limited; therefore initial process windows should be derived from the lot certificate and validated on production trials.
Melt-temperature control is the primary constraint in EVA film and coating lines. Vinyl acetate sequences undergo deacetylation with measurable acetic acid evolution near 230°C; for continuous operation, melt temperatures are typically kept below 200°C. On a 30:1 L/D single-screw extruder with a general-purpose polyolefin screw, local melt-temperature overshoot can occur when screw speeds exceed 80 min⁻¹ and back-pressure is high. Extruder barrel profiles for EVA sealant webs are often set from 120°C in the feed zone to 180°C at the metering zone, with die lip temperature not exceeding 190°C unless the line is equipped with rapid melt-temperature monitoring. In blown film, EVA reduces crystallization rate; bubble cooling and frost-line height must be adjusted because the polymer remains tacky over a wider temperature interval. Corona treatment response is generally higher than LDPE, but excessive treatment can create low-molecular-weight oxidized species that increase coefficient of friction. Neck-in and draw resonance patterns shift because EVA has lower melt elasticity and faster stress relaxation than LDPE at equivalent melt-flow rate. Equipment with gravimetric feeding and low-shear Maddock mixing sections reduces melt-temperature variability. Lot-to-lot MFR difference of ±0.5 g/10 min can alter screw pressure and output; die gap adjustment is frequently required when switching from LDPE.
In closed-cell footwear foam production, EF563 may be blended with azo blowing agents, peroxide crosslinking agents, zinc oxide, and fatty acid processing aids. Unlike low-density polyethylene foam, EVA foam compound viscosity drops at blowing-agent decomposition temperatures, allowing cell growth if gel formation and gas evolution rates overlap. Published kinetic data for azodicarbonamide decomposition vary with carrier resin and activator package; capillary rheometer and moving-die rheometer verification is required to set cure and blow profiles. Closed-mold expansion ratio in EVA foam commonly ranges from 1.4 to 2.0 depending on mold fill and crosslink density. The polar vinyl acetate comonomer improves filler and pigment wetting, enabling carbon-black or mineral dispersion without high-shear masterbatch steps. Off-gassing and shrinkage must be managed through post-curing; residual blowing agent and acetic acid traces can cause dimension instability if parts are packed before cooling below 40°C.
Thermal degradation of EVA proceeds primarily through acetoxy-group elimination, yielding acetic acid and conjugated polyene sequences. Thermogravimetric analysis with evolved-gas FTIR under nitrogen, performed at 10 K/min in accordance with ISO 11358-1:2022, typically shows acetic acid evolution beginning between 180°C and 230°C, with rapid mass loss above 300°C. Below 200°C, the deacetylation rate is low enough for short residence-time processes, but dead zones, extended purges, or repeated regrind cycles increase carboxylic acid concentration in the melt. Acetic acid can attack carbon steel screws and barrels, producing iron acetate and causing pitting; therefore melt-contact surfaces are often hardened or clad with corrosion-resistant alloys. Barrel and adapter temperature settings above 210°C are considered high-risk for EVA unless residence time is below 2 minutes. The volatile acetic acid also decomposes blowing-agent residues in foam formulations and can reduce organoleptic performance in food-contact film. Proper venting of the extruder decomposition gases, use of vacuum devolatilization where available, and limiting regrind to 20 wt% of the feed are operational controls. Additives that neutralize acid, such as calcium stearate or zinc stearate, are incorporated at 0.05–0.20 phr to buffer pH in the melt. These levels are formulation-dependent and must be verified by melt-flow retention after multiple extrusion passes.
Capillary and oscillatory shear data for EVA melts demonstrate shear-thinning behavior comparable to branched polyethylenes, but the power-law index depends on vinyl acetate weight fraction. At 190°C, apparent viscosity values for mid-VA EVA typically range from 10² Pa·s to 10³ Pa·s at shear rates of 100–1000 s⁻¹; exact viscosity curves require lot-specific testing according to ISO 11443:2021. Melt extensional viscosity influences blow-film bubble stability and extrusion-coating neck-in. High-shear dispersion is less critical for EVA than for filled polyolefins because vinyl acetate polarity assists filler wetting. Capillary rheometry reports show that increasing vinyl acetate content from 9 wt% to 28 wt% reduces apparent viscosity at fixed shear rate and narrows the processing window for bubble stability. These trends guide equipment setup for EF563 but do not replace production trials.
Replacement of LDPE with EVA alters the melt viscosity and melt elasticity at the same equipment settings. Hot-tack and seal initiation temperatures are lower by 10°C to 30°C depending on vinyl acetate content, making EVA suitable for low-temperature sealing to oriented PET and aluminum foil. The material may exhibit higher die-lip deposit formation if melt temperature is excessive; die lip cleaning cycles may shorten. In extrusion coating, edge-bead thickness is often greater due to lower melt strength, and die deckle settings require adjustment. Adhesion to aluminum foil and polar surfaces improves because vinyl acetate dipoles interact with oxide layers, but exact peel-strength differences require laminate-specific testing according to ASTM F904. Published data for EF563 in this specific laminate configuration is limited; line trials with production tooling are required.
For material substitution studies, EVA grades are frequently compared by vinyl acetate content band rather than by trade name. Table 1 presents class-level property envelopes; EF563 should be assigned to the appropriate band using the supplier’s vinyl acetate weight fraction and melt flow rate certificate.
| Property | Low-VA EVA (≤9 wt%) | Mid-VA EVA (12–28 wt%) | High-VA EVA (28–40 wt%) | Test method |
|---|---|---|---|---|
| Density | 0.925–0.94 g/cm³ | 0.93–0.95 g/cm³ | 0.95–0.98 g/cm³ | ASTM D1505 |
| Melting peak | 90–110°C | 60–90°C | 40–60°C | ASTM D3418-21 |
| Shore hardness | D 45–55 | A 80–95 / D 25–40 | A 40–75 | ISO 868:2003 |
| Flexural modulus | 50–200 MPa | 10–80 MPa | <10 MPa | ISO 178:2019 |
| Seal initiation | 100–130°C | 70–100°C | 50–80°C | ASTM F88/F88M |
| Polar adhesion | Low | Moderate to high | High to very high | No single standard |
| Deacetylation onset | Not dominant below 300°C | 230°C | 200–230°C | TGA-FTIR |
| Typical uses | Flexible hose, semi-rigid packaging, wire and cable | Blown film, extrusion coating, footwear foam, laminates | Photovoltaic encapsulants, hot-melt adhesives, wax modifiers | — |
Unlike metallocene polyolefin plastomers, EVA derives flexibility primarily from comonomer polarity rather than controlled long-chain branching; as a result, EVA sealant webs often show higher hot-tack at low temperature but lower thermal-oxidative stability. Ethylene methyl acrylate copolymers have different ester degradation chemistry and may tolerate higher melt temperatures in extrusion coating, although EMA sacrifices the specific adhesion and softness profile of EVA at equivalent comonomer content.
EVA pellets are supplied with surface lubrication; silo storage should maintain pellet temperature below 40°C to prevent blocking, especially for higher vinyl acetate grades. Pre-drying is not mandatory for dry pellets, but exposure to relative humidity above 60% can permit surface moisture that generates die-lip deposits and film bubbles; in such environments, desiccant drying at 70°C for 2–4 hours is applied. Conveying systems should be cleaned between polyolefin and EVA campaigns because cross-contamination causes seal initiation variability. EVA pellets can retain heat after railcar or container transfer; cool-down to ambient is advised before loading into closed silos. Additive incompatibilities include amine-based stabilizers that can deactivate peroxide cure systems in foam compounds and cause premature crosslinking or scorch; compatibility should be confirmed by moving-die rheometer. Blending EF563 with LDPE, LLDPE, or other EVA grades requires melt-flow matching: a difference greater than 2 g/10 min may produce viscosity stratification in blown film and gel-like defects. For masterbatch letdown, high-shear mixers are used with carrier resin MFR similar to EF563 to avoid filter-pressure rise.
Regulatory status depends on the specific vinyl acetate weight fraction and the additives in the lot. In the United States, ethylene-vinyl acetate copolymers intended for food contact may meet FDA 21 CFR 177.1350 when the vinyl acetate content is within the specified limits and extractives are controlled; the supplier’s regulatory statement must confirm the grade. In the European Union, compliance is assessed under EU Regulation 10/2011, including overall migration limits and specific migration limits for vinyl acetate monomer. For plastic materials and articles under EU 10/2011, the overall migration limit is 10 mg/dm², but the finished-article surface-to-volume ratio determines the expression of the result. Electrical and electronic component use requires compliance with 2011/65/EU and its delegated directives; heavy-metal restrictions apply to the resin and any masterbatch. The resin may be specified for medical packaging under ISO 10993 indirect-contact assessment only when the manufacturer has completed validation; the base polymer alone does not confer approval. A compliance checklist is provided in Table 2. The absence of a listed standard in a supplier document does not automatically imply non-compliance; the final converter is responsible for the finished article.
| Requirement | Standard or regulation | Typical EVA assessment |
|---|---|---|
| Melt flow rate | ISO 1133-1:2022 | Lot certificate value |
| Density | ASTM D1505 | Lot certificate value |
| US food contact | FDA 21 CFR 177.1350 | Grade-specific letter required |
| EU food contact | EU 10/2011 | Overall migration and specific migration testing |
| RoHS | 2011/65/EU and amendments | Supplier declaration |
| REACH | EC 1907/2006 | SVHC confirmation |
| Tensile properties | ISO 527-2:2012 | Film or plaque testing |
| Vicat softening | ISO 306:2022 | Method A50 or B50 |
Compounders use EF563 as a modifier in polyolefin systems to improve stress-crack resistance, adhesion, and filler acceptance. Addition levels of 5–20 wt% EVA in LDPE or LLDPE shift seal initiation lower without destroying optical clarity if the vinyl acetate content is compatible. At higher additions, blocking and tack increase, requiring antiblock loadings determined by ASTM D3354 or internal blocking tests. In masterbatch production, EVA serves as a carrier for organic pigments and flame-retardant systems because its polar comonomer reduces pigment agglomeration and improves letdown uniformity. Screw design for EVA carrier masterbatches favors distributive mixing over high intensive shear; overmixing raises melt temperature and initiates acid release. Production-scale twin-screw lines with 20:1 to 40:1 L/D and modular mixing arrays can process EVA masterbatches at output rates similar to LDPE carriers when barrel temperatures are set 20–30°C lower.
