| HS Code | 776476 |
| Va Content | 10% |
| Melt Index | 0.55 g/10min |
| Density | 0.930 g/cm³ |
| Melting Point | 91 °C |
| Vicat Softening Point | 70 °C |
| Tensile Strength At Break | 17 MPa |
| Elongation At Break | 800% |
| Flexural Modulus | 42 MPa |
| Shore A Hardness | 90 |
| Brittleness Temperature | -76 °C |
| Film Clarity | Good |
| Form | Film Grade |
As an accredited Elevate EF510 EVA Copolymer Resin,10% VA,0.55 MI,Film Grade factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Elevate EF510 EVA Copolymer Resin is supplied as pellets in 25 kg polyethylene-lined paper bags, ideal for film-grade processing. |
| Container Loading (20′ FCL) | One 20-foot FCL container holds palletized Elevate EF510 EVA resin, securely braced, kept dry, ventilated, and protected from heat. |
| Shipping | Elevate EF510 EVA Copolymer Resin ships as free-flowing pellets in 25 kg bags, supersacks, or bulk hopper trucks. Protect from moisture and excessive heat, and store in a dry, ventilated area away from ignition sources. Avoid compaction; handle with standard conveying equipment. Not regulated as hazardous for transport under normal conditions. |
| Storage | Store Elevate EF510 EVA Copolymer Resin in its original sealed packaging in a cool, dry, well-ventilated area. Keep away from direct sunlight, heat sources, open flames, and strong oxidizing agents. Protect from moisture and physical damage to prevent contamination. Avoid generating dust; keep area clean and follow good housekeeping practices. |
| Shelf Life | Shelf life is typically 2 years from manufacture when stored unopened in a cool, dry area away from sunlight and heat. |
In mono-layer greenhouse cladding, Elevate EF510 is introduced into a low-density polyethylene carrier at mass fractions from 10% to 35%, with the 10% vinyl acetate units disrupting crystallite orientation enough to raise long-wave infrared absorption in the 7–13 µm radiative band while preserving tensile stiffness. On a three-layer blown-film line equipped with a 90 mm grooved-barrier screw, L/D 30:1, and a 350 mm rotating die, the temperature profile is maintained at 165 °C, 175 °C, 185 °C, 190 °C, and adapter/die at 192 °C. Melt pressure at the screen pack remains between 220 bar and 260 bar. The blow-up ratio is set at 2.5:1, and frost-line height is held at 700 mm to 850 mm for a 180 µm greenhouse sheet. Haze measured per ASTM D1003-21 is held below 18%, and light transmission in the photosynthetically active radiation band is confirmed with a spectroradiometer against 400–700 nm. Anti-fog behavior is produced by adding 3% to 5% of a glycerol monostearate masterbatch. Surface tension after 7 days of accelerated condensation at 50 °C and 95% relative humidity must exceed 38 mN/m when tested with test inks in accordance with ASTM D2578-23. UV weathering requirements for multi-season cladding depend on geographic UV dose; stabilizer packages containing HALS and benzotriazole absorbers are typically dosed at 0.3% to 0.6% by mass, and film retained tensile elongation is assessed after 2,000 h of QUV cycling per ASTM G154-23 with UVA-340 lamps and a 60 °C black-panel temperature. Field failures in Mediterranean installations are most frequently recorded as premature longitudinal splitting at fixing points when the contact area with galvanized steel retains heat above 55 °C, so edge taping or polycarbonate batten inserts are specified for installations above 2,500 m altitude.
On a coextruded blown-film line configured for polyamide/EVOH/tie/EVA structures, EF510 is run as the sealant layer at a thickness of 12 µm to 20 µm, typically contributing 18% to 25% of the total 80 µm film gauge. The 0.55 MI melt flow index, measured per ASTM D1238-20 at 190 °C and 2.16 kg, preserves enough molecular weight to prevent thinning at seal-bar temperatures above 120 °C. Seal initiation temperature is determined by ASTM F2029-22 and typically falls between 95 °C and 105 °C at 0.3 MPa sealing pressure and 1.0 s dwell. Hot tack tests per ASTM F1921/F1921M-22 at 115 °C, 0.3 MPa, and 0.5 s dwell are specified at a minimum of 4.0 N/25 mm to prevent seal pop-open during vertical form-fill-seal operation. After packaged frozen vegetables are chilled to −25 °C for 72 h, seal strength measured per ASTM F88/F88M-23 at 300 mm/min jaw speed generally remains above 14 N/25 mm when the sealing jaw temperature is 125 °C. Below 90 °C, seal strength falls below 6 N/25 mm and the failure mode shifts from cohesive film tear to interfacial peel. The low VA content of EF510 imposes a narrower hot-tack plateau than 18% VA grades, so machine builders restrict dwell time to not less than 0.4 s at line speeds above 80 packs/min. Downgauging below 10 µm sealant thickness is not recommended because frost-line variability on an 8-port multi-layer die can produce localized gauge bands thinner than 8 µm, causing channel leakers detected only by vacuum dye penetration per ASTM F3039-23.
Pallet hood production on a nine-layer blown-film line uses EF510 in the outer cling layer at 12% to 18% by mass, blended with octene-based linear low-density polyethylene of 0.92 g/cm³ density and 1.0 MI. The high molecular weight of the 0.55 MI EVA phase raises storage modulus in the melt below 1.0 rad/s, which stabilizes the bubble neck during oscillating haul-off and permits a blow-up ratio of 3.0:1 to 3.5:1 without the gauge bands that form with lower-viscosity cling modifiers. Barrel temperatures are limited to 175 °C to 190 °C because higher settings generate acetic acid from residual VA moieties and produce visible film defects at the die lip. With a 250 kg/h output rate and a 500 mm die diameter, melt pressure measured before the screen changer remains in the range of 280 bar to 340 bar. Screens are specified with 80 mesh and 120 mesh candle packs to capture degraded gel particles. Static creep resistance of the finished hood is evaluated by hanging a 1,200 kg load on a 1,100 mm × 1,100 mm pallet hood for 24 h at 23 °C. Residual elongation greater than 8% indicates insufficient high-molecular-weight fraction, and the EF510 addition rate is increased in 2% increments until creep is below 6%. Puncture resistance is measured by ISO 7765-1:2018 with a 38 mm hemispherical dart. For a 100 µm film, the penetration energy typically rises from 2.1 J without EF510 to 3.4 J at 15% EF510. Because the low MI narrows the usable melt-temperature window on cast-film lines, EF510 is allocated to blown-film hood lines rather than high-speed cast pallet-wrap lines, where internal melt temperature would exceed 220 °C at screw speeds above 120 rpm.
Extrusion of heavy-duty sack film with EF510 at mass fractions from 20% to 40% in a linear low-density polyethylene-rich formulation is performed on a three-layer blown-film die with die gap 2.0 mm and die diameter 400 mm, using a screw speed of 75 rpm to 85 rpm and a melt temperature of 185 °C to 195 °C. The 0.55 MI EVA phase increases melt pressure at the die by 15 bar to 25 bar relative to a 1.0 MI LDPE control, but the higher viscosity also reduces bubble flutter at a pressure differential of 4 Pa to 6 Pa under internal bubble cooling. Film produced at 120 µm total thickness is slit into 450 mm wide layflat and converted into valve sacks for polymer granules. Puncture resistance is tested per ASTM D5748-19, and the control band for a 120 µm three-layer film is set at 45 N to 60 N peak force at 500 mm/min. Below 35 N, the sack fails during axial drop with a 25 kg fill mass from 1.2 m. Elmendorf tear measured by ASTM D1922-19 in the machine direction is retained above 28 N/mm after 7 days at −30 °C, whereas a homopolymer LDPE control typically falls below 18 N/mm under the same conditions. Creep life of the film under a tensile stress of 10 MPa is evaluated per ISO 899-1:2017 at 40 °C. Creep strain at 1,000 h remains below 2.5% when EF510 is present at 30%. The operational boundary is set by the maximum sustainable bubble pressure. Converters running without internal bubble cooling should limit EF510 to 20% because the higher melt strength above 200 bar die pressure reduces bubble expansion and generates edge beads.
For peelable and non-peelable medical pouch stock, EF510 is coextruded as the heat-seal layer against a polyamide or polyethylene terephthalate support web, with layer thickness between 15 µm and 30 µm. The 10% VA content provides a cohesive seal that displays a smooth failure mode when tested per ASTM F88/F88M-23 at 200 mm/min. For steam sterilization at 121 °C for 30 min, post-sterilization seal strength must not drop more than 20% from the unsterilized value. Process validation follows ISO 11607-1:2019 subclause 5.1.6 for seal integrity and ISO 11607-2:2019 for aseptic presentation criteria. Because EF510 has a 0.55 MI melt flow index, the sealant layer resists heat-seal squeeze-out at the seal edge during multi-cavity sealing-tool contact. Edge flash measured under a 20× optical comparator is held below 150 µm. The following control intervals are applied on a 16-station rotary pouch line at 110 °C to 130 °C jaw temperature.
| Property | Test standard | Control interval | Process condition |
|---|---|---|---|
| Seal strength | ASTM F88/F88M-23 | ≥ 12 N/25 mm | after steam sterilization at 121 °C for 30 min |
| Hot tack | ASTM F1921/F1921M-22 | ≥ 3.5 N/25 mm | 115 °C, 0.3 MPa, 0.5 s |
| Seal initiation | ASTM F2029-22 | 95–105 °C | 0.3 MPa, 1.0 s |
| Dye penetration | ASTM F3039-23 | no channels | 10 min vacuum dwell |
For gamma-sterilized pouches, the EVA layer yellows after doses above 30 kGy. Published data for this specific configuration is limited, so color change must be screened per production lot using a spectrophotometer and a corresponding sterilization dose map.
When a converter blends 30% post-consumer recycled LLDPE into a three-layer e-commerce mailer film, EF510 at 15% to 20% by mass is added to the middle layer to compensate for the reduction in tear resistance caused by polypropylene contamination in the recycled stream. The recycled fraction is screened through a 120 mesh continuous screen changer before dosing. Melt filtration pressure in the extruder rises from 180 bar to 220 bar as the screen pack captures 70 µm to 120 µm gels, and the 0.55 MI EVA phase reduces the incidence of melt fracture by increasing the critical shear rate of the blend. Blown-film processing uses a 70 mm screw with L/D 30:1, a die gap of 1.6 mm, and a melt temperature of 185 °C. The die pressure should not exceed 310 bar, otherwise the recycled polypropylene fraction forms a visible splatter pattern on the outer surface. Tensile properties of the finished 60 µm mailer film are tested per ISO 527-3:2018. Machine-direction tensile strength is specified at not less than 22 MPa, and elongation at break is specified at not less than 300%. Dart impact per ASTM D1709-22 is measured with Method A. A 60 µm film containing 20% EF510 and 30% PCR typically retains a dart value of 320 g, while the PCR control without EF510 falls below 220 g. Sealability is assessed by a hot-bar jig per ASTM F2029-22. The seal initiation range shifts upward by 4 °C to 6 °C when EF510 is combined with PCR containing residual polypropylene, so the sealing equation on the conversion line is adjusted to 122 °C and 0.5 s dwell. Because 10% VA is not a compatibilizer for polypropylene contamination, the PCR stream must be pre-sorted to limit polypropylene content to below 3%. Above that level, the improvement in dart impact is lost and the melt-pressure standard deviation across a 2-hour run exceeds 12 bar.
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Elevate EF510 is a film-grade ethylene-vinyl acetate copolymer resin with nominal vinyl acetate content of 10 wt% and melt index of 0.55 g/10 min determined at 190 °C and 2.16 kg in accordance with ISO 1133-1:2022 or ASTM D1238. The film-grade designation places the material in thin-web extrusion applications rather than injection molding, extrusion coating, or rotational molding. The resin is used in blown film, cast film, coextruded sealant webs, and lamination plies where lower VA content retains more polyethylene-like stiffness than 18 wt% or 28 wt% VA copolymers while still providing a measurable reduction in heat-seal initiation temperature and an increase in toughness relative to LDPE. The 0.55 g/10 min melt index is deliberately low: it increases melt strength, improves bubble stability in blown film, and reduces neck-in in cast film, but it also reduces melt flow and raises extruder head pressure compared with higher-MI ethylene-vinyl acetate grades. The product should therefore be specified when the film structure requires high melt strength and moderate polarity rather than maximum sealant tack or low processing back pressure.
Nominal density for this VA level is typically 0.930 to 0.933 g/cm³ when measured by ISO 1183-1 or ASTM D1505. Vinyl acetate content is commonly confirmed by Fourier-transform infrared spectroscopy using ASTM D5594, and the melt index is verified by capillary viscometry under ISO 1133-1:2022 conditions. The film-grade designation can include slip and antiblock packages, but the exact additive composition is manufacturer-specific and should be read from the certificate of analysis. Lot-to-lot molecular weight distribution and residual monomer levels may be monitored by gel-permeation chromatography and headspace gas chromatography; those data are not normally supplied unless requested for critical medical or high-temperature applications. Because the resin is hydrophobic, equilibrium moisture content is low, but surface condensation on cold pellets can introduce defects if not removed before extrusion.
Incoming resin inspection for EF510 should include pellet size distribution and fines content because low-MI EVA pellets can generate fines during pneumatic conveying; fines accumulate in hopper throats and cause feed instability. Bulk density is typically 500 to 560 kg/m³ for EVA film-grade pellets but varies with pellet shape; the value should be confirmed by the supplier. Black specks in film are measured by optical scanners or visual inspection against a light box. Because low-MI grades require higher screw torque, consistent pellet bulk density and uniform feeding reduce melt pressure fluctuations. Feedthroat temperature should be kept below 50 °C to prevent pellet clumping, and a hopper magnet is recommended to protect the screw from tramp metal. These incoming inspections are not part of the polymer specification but are standard incoming-quality procedures on production-scale blown film lines.
On a single-screw extruder with L/D of 24:1 to 30:1 and a barrier screw with compression ratio 2.5:1 to 3.5:1, the low melt index of EF510 produces a high-viscosity melt that should be processed with barrel temperatures between 190 °C and 220 °C. Ethylene-vinyl acetate copolymers begin to eliminate acetic acid at approximately 230 °C; formation of acetic acid is autocatalytic and can accelerate gel formation, brown specks, and corrosion in downstream equipment. The melt-temperature limit is therefore not a nominal recommendation but an operational boundary. Screw speed and back pressure should be monitored to ensure the melt temperature does not overshoot during high-shear operation. In blown film, a die gap of 1.2 to 2.0 mm, blow-up ratio of 2.5:1 to 3.0:1, and frost line height of 4 to 8 die diameters are representative ranges for low-MI EVA film grades. In cast film, die-to-chill-roll gap is typically 10 to 20 mm, and chill roll temperature is held at 15 to 25 °C to control crystallinity and film flatness. Published data for this specific configuration is limited; these ranges should be confirmed on the actual line because die diameter, air-ring geometry, and corona treatment conditions alter the useful operating window.
Pre-drying is normally unnecessary when the resin is stored at less than 60% relative humidity. If cold pellets are moved into a warm compounding room, surface condensation can require desiccant drying at 60 to 65 °C for 2 to 4 h. The drying system should be closed-loop desiccant rather than hot-air only, because humid air will not remove surface moisture efficiently at these low temperatures. During shutdown, the extruder should be purged with a higher-MI LDPE or EVA to displace EF510 from the screw and die; stagnant melt above 200 °C forms carbon deposits that may require mechanical cleaning. In coextrusion, vinyl acetate groups increase polymer-metal interaction relative to LDPE, so die-lip buildup and edge bead are field failure modes that must be managed with periodic wiping using copper-free tools and, if necessary, lower die-lip set temperatures.
For coextruded structures, EF510 is specified as a sealant layer on polyethylene or oriented polypropylene substrates when the final package must exhibit controlled seal initiation and good interlayer adhesion after lamination. Heat-seal strength is tested according to ASTM F88 or ISO 527-3 tensile methods, hot-tack according to ASTM F1921, and seal-through-contamination performance according to the packager’s internal method. The 10 wt% VA content provides a seal initiation temperature between that of LDPE and 18 wt% VA EVA; the exact value is a function of film gauge, sealing pressure, dwell time, and coextrudate layer thickness, so it should be measured on the final film rather than inferred from resin type. In agricultural and industrial film, dart impact resistance is measured by ISO 7765-2 or ASTM D1709, Elmendorf tear by ISO 6383-2 or ASTM D1922, and haze by ISO 14782 or ASTM D1003. These applications use the toughness and low-temperature flexibility of the EVA without demanding the lower modulus of higher-VA sealant grades.
Specimen conditioning for film testing follows ISO 291 at 23 ± 2 °C and 50 ± 5 % relative humidity for 40 h, unless otherwise specified by the end-use standard. Film tensile properties are usually measured in machine and transverse directions according to ASTM D882 or ISO 527-3; tear resistance is often reported as Elmendorf tear per ASTM D1922 or ISO 6383-2. The puncture resistance of EF510 film is not an inherent resin property but a function of gauge, orientation, and coextruded layer ratios. Processors should establish internal release targets from production-capability studies rather than from generic EVA literature, because film-grade additive packages and process history can shift elongation at break and impact resistance by more than 10% even when melt index and VA content are unchanged. This is especially relevant for thin-gauge films below 30 µm, where gauge variation and frost-line instability influence dart impact more than the base resin’s tensile properties.
On cast film lines with a 90 mm extruder and vertical die feeding a 1,500 mm wide chill roll stack, the low MI may require a drive motor with at least 15 to 20% additional torque capacity relative to a 2.0 g/10 min resin of the same VA content. The exact torque reserve should be calculated from the extruder OEM’s power curve. Neck-in and edge bead are lower than for high-MI EVA because of higher melt strength, but the melt curtain can show draw resonance if the chill roll speed is raised too quickly. Cast film thickness uniformity is checked with a capacitance or beta gauge across the web; gauge variation of less than ±3% at two-sigma is a typical internal control for films above 40 µm, but for thin films below 20 µm variation may be wider. These production-line observations are drawn from general film extrusion practice; EF510-specific data should be generated in a trial.
Differences among EF510, high-MI EVA, and higher-VA EVA become clearer when viscosity, crystallinity, and seal response are examined together. The following table summarizes representative published ranges for film-grade ethylene-vinyl acetate copolymers; it is not a replacement for lot-specific certificates or production trials.
| Attribute | EF510 nominal | High-MI EVA | Higher-VA EVA |
|---|---|---|---|
| Vinyl acetate content | 10 wt% | 10 wt% | 18 wt% |
| Melt index | 0.55 g/10 min | 2.0 g/10 min | 0.7 g/10 min |
| Density | 0.930–0.933 g/cm³ | 0.930–0.933 g/cm³ | 0.937–0.940 g/cm³ |
| Crystallinity | Higher | Comparable | Lower |
| Melt strength and bubble stability | Higher | Lower | Moderate |
| Seal initiation temperature | Higher | Comparable | Lower |
| Room-temperature stiffness | Higher | Higher | Lower |
| Adhesion to polar substrates | Moderate | Moderate | Higher |
The comparison shows that increasing VA content from 10 wt% to 18 wt% lowers crystallinity and seal initiation but increases density and polar adhesion; increasing melt index from 0.55 g/10 min to 2.0 g/10 min lowers melt strength and head pressure while leaving short-chain branching and VA-related polarity largely unchanged. In a film-line replacement, a shift from a 2.0 g/10 min EVA to EF510 is expected to require either higher barrel temperatures or lower screw speed to maintain the same melt pressure; screw speed reductions of 10 to 20% are commonly observed in practice but depend on screw wear, screw design, and die restriction. The higher melt strength of EF510 allows stable bubbles at BUR values at the higher end of the 2.5:1 to 3.0:1 range, but edge fold and gauge bands may appear if the frost line is too low. Conversely, replacing a 28 wt% VA EVA with EF510 will reduce cling, reduce low-temperature flexibility, and increase seal initiation; it may also reduce die-lip buildup and shorten purging cycles.
If the final film requires a seal initiation below that achievable with 10 wt% VA, EF510 can be coextruded with a thin 18 wt% or 28 wt% VA sealant skin. This construction retains the bulk stiffness and melt strength of EF510 in the core while placing the higher-VA resin only at the sealing interface. Interfacial instability between layers of different VA content is limited when the melt viscosity ratio at the die exit is low; processing the two resins within 10 to 15 °C of each other and selecting viscosity-matched grades minimizes layer distortion. Adhesion to polar barrier layers such as EVOH or polyamide is not provided by the 10 wt% VA units alone; tie resins based on maleic anhydride-grafted polyethylene or ethylene-acrylic acid are used in the adjacent layer. In such structures, the sealant layer is corona-treated or flame-treated on the lamination side, and peel adhesion is tested according to ASTM F904 for laminated films.
Compared with an LDPE resin of equivalent MI, EF510 has reduced crystallinity, lower heat-seal initiation, greater toughness at freezer temperatures, and higher surface energy. Those changes are measurable in film tests: EVA films typically show higher puncture and dart impact than LDPE of similar MI, but lower tensile modulus and higher cling. In the field, this translates to improved resistance to impact failure in frozen-food packages but reduced stiffness in stand-up pouches unless the film is oriented or laminated. The stiffness deficit can be compensated by using EF510 in the core and LDPE skins, or by increasing film gauge. That structural solution is more effective than modifying the EVA itself because raising VA content would further reduce modulus and melt strength.
For United States food-contact applications, ethylene-vinyl acetate copolymers meeting the compositional and extractives limitations of 21 CFR 177.1350 may be used as articles or components of articles that contact food. The migration of vinyl acetate monomer is not the only factor; the finished film must also satisfy the overall migration requirements of the intended food type and temperature condition. In the European Union, Regulation (EU) No 10/2011 requires evaluation of the monomers and additives in the final plastic layer, with specific migration limits for vinyl acetate and any slip or antiblock components. REACH Regulation (EC) No 1907/2006 and RoHS Directive 2011/65/EU statements should be obtained from the supplier’s safety data sheet and certificate of compliance for the exact grade and lot. Because EF510 is a film-grade resin that may contain processing aids, a pellet-level compliance statement does not automatically apply to a laminated or printed final structure; downstream converters are responsible for generating end-article compliance data on the finished package.
