| HS Code | 499766 |
| Vinyl Acetate Content | 19 wt% |
| Melt Flow Rate 190 C 2 16kg | 3.0 g/10 min |
| Density | 0.94 g/cm³ |
| Melting Point Dsc | 85 °C |
| Vicat Softening Temperature | 62 °C |
| Tensile Strength | 17 MPa |
| Elongation At Break | 700 % |
| Flexural Modulus | 35 MPa |
| Hardness Shore A | 88 |
| Hardness Shore D | 38 |
| Brittleness Temperature | -75 °C |
| Glass Transition Temperature | -40 °C |
As an accredited ELVAX 3190 Ethylene Vinyl Acetate Copolymer factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | ELVAX 3190 Ethylene Vinyl Acetate Copolymer is packaged as pellets in 25 kg multiwall paper bags for safe handling. |
| Container Loading (20′ FCL) | ELVAX 3190 EVA copolymer packed in palletized bags, loaded as 20′ FCL, secured for safe transport. |
| Shipping | ELVAX 3190 is shipped as solid pellets in multi-wall paper bags or FIBCs, palletized and wrapped for moisture protection. It is non-hazardous under transport regulations. Store in a cool, dry area, away from heat sources and direct sunlight, preventing clumping and degradation during transit. |
| Storage | Store ELVAX 3190 Ethylene Vinyl Acetate Copolymer in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and oxidizing agents. Keep containers tightly sealed to prevent moisture, dust, and contamination. Avoid creating airborne dust; use proper grounding to prevent static discharge. Follow manufacturer guidelines for shelf life and handling. |
| Shelf Life | Shelf life is two years from date of manufacture when stored in original, unopened containers under recommended conditions. |
In solvent-free hot-melt assembly for case and carton closing, ELVAX 3190 is introduced at 18–30 wt% of the adhesive compound to balance cold-flex resistance against open-time control. The copolymer’s 25 wt% vinyl acetate content and 2.0 g/10 min melt index measured under ISO 1133-1:2022 at 190°C/2.16 kg place it in the mid-polarity segment for adhesion to coated board, clay-coated stock, and polyethylene films. A typical corrugated case-sealing starting point pairs the copolymer with 35–50 parts of hydrogenated hydrocarbon tackifier and 15–25 parts of paraffin or microcrystalline wax per 100 parts EVA; finished adhesive viscosity is maintained between 900–1,800 mPa·s at 175°C when evaluated by ASTM D3236-15, while ring-and-ball softening point is controlled to 95–110°C under ASTM E28-18. T-peel adhesion to corrugated Kraft is measured according to ASTM D1876-08(2023) at 300 mm/min crosshead speed, with pass levels established by case weight and board porosity rather than a single universal threshold. Continuous production on co-rotating twin-screw extruders with L/D 30:1 or high-shear anchor mixers with wall scrapers is run at 140–170°C; the most frequent production failure is thermal runaway in the melt seal zone when barrel temperatures exceed 185°C, causing acetic acid release from vinyl acetate cleavage, viscosity shift, and darkening that cannot be corrected by additional antioxidant alone. Raw EVA pellets are specified at 0.1% maximum moisture to limit hydrolysis at melt temperatures above 170°C; a nitrogen purge on the mixer headspace reduces surface skin formation and char carryover. For food carton applications, the adhesive is used under FDA 21 CFR 175.105 indirect food contact provisions, while FDA 21 CFR 177.1350 applies only when the adhesive is a component of a finished food-contact layer. Terminal finished products include corrugated case and carton closing, bookbinding adhesives, foam bonding, and low-bleed label hot melts.
Addition of 5–15 wt% ELVAX 3190 to refined paraffin wax for corrugated display trays and cupstock coatings is carried out in jacketed vessels with anchor agitation at 120–140°C, followed by high-shear rotor-stator finishing at 1,500–3,000 rpm for 20–40 min. The melt viscosity of the EVA/wax blend is measured at 125°C under ASTM D3236-15, with typical coating-grade blends falling between 50–200 mPa·s; penetration is measured by ASTM D1321-18 at 25°C and blocking resistance is evaluated by stacked sheet tests under controlled weight and temperature. The 25 wt% vinyl acetate content raises the flex-crack threshold and improves cold-temperature coating adhesion compared with unmodified wax, but the formulation must limit free acid and water content to prevent viscosity separation. Production failure modes include wax oxidation at temperatures above 160°C, visible as yellowing and plate-out on coating rolls, and phase separation when high-meltpoint polypropylene wax is combined at levels above 10 wt% without a compatibilizing resin. Application to paperboard uses air-knife or metering-rod coaters at 120–135°C; coat weights between 5–15 g/m² are adjusted for moisture vapor transmission and cold-set release. Regulatory compliance for cupstock and food-contact corrugated uses FDA 21 CFR 176.170 for components of paper and paperboard in contact with dry and fatty foods, with migration limits defined by food type and condition of use; EU applications follow EU 10/2011 overall migration requirements for plastic-coated paper when applicable. Terminal finished products include coated corrugated display trays, cupstock, overwrap for frozen or refrigerated produce, and water-resistant paperboard packaging.
Halogen-free flame-retardant cable jacket compounds based on EVA/PE blends use ELVAX 3190 at 25–40 wt% of the polymer fraction, combined with alumina trihydrate at 120–180 phr and magnesium dihydroxide at 20–50 phr. The 25 wt% vinyl acetate content supplies the polar surface energy for filler wetting without generating the high viscosity associated with higher-VA grades. Compounding is performed on co-rotating twin-screw extruders with L/D 40:1 and vacuum venting, using a barrel temperature profile from 120°C in the feed zone to 155–165°C at the die; the critical processing boundary appears when screw speed exceeds 300 rpm at high ATH loading, because local shear heating above 185°C causes EVA deacetylation, acid gas release, and accelerated screw/barrel corrosion. Pellet moisture is controlled at 0.05% maximum; pre-drying at 60°C for 4 h in a desiccant dryer is applied when storage relative humidity exceeds 60%. Flame-retardant performance is evaluated by limiting oxygen index under ISO 4589-2:2017, acid gas emission under IEC 60754-1:2011 and IEC 60754-2:2011, and smoke density under IEC 61034-2:2019. Mechanical acceptance uses tensile strength and elongation at break with Type IV specimens according to ASTM D638-14 at 250 mm/min; thermal ageing is run at 100°C for 168 h per IEC 60811-501:2012. The terminal products are low-smoke zero-halogen cable sheathing and insulation for building wire, transit cables, and renewable energy cabling, where compound specifications typically require unaged elongation above 150% and aged elongation above 125%; these are specification targets for the compound, not intrinsic ELVAX 3190 values, and must be confirmed on the production extruder. The table below summarizes the compliance matrix for this application.
| Test discipline | Reference method | Measured parameter |
|---|---|---|
| Limiting oxygen index | ISO 4589-2:2017 | Oxygen concentration for sustained burning |
| Acid gas evolution | IEC 60754-1:2011 | Halogen acid gas content |
| Acid gas corrosivity | IEC 60754-2:2011 | pH and conductivity of combustion effluent |
| Smoke density | IEC 61034-2:2019 | Light transmittance during combustion |
| Tensile properties | ASTM D638-14 | Type IV specimen at 250 mm/min |
| Thermal ageing | IEC 60811-501:2012 | 100°C for 168 h |
Sealant layers in cast and blown coextruded films incorporate ELVAX 3190 at 10–30 wt% of the sealant layer blend with LDPE or LLDPE to lower heat-seal initiation temperature and broaden hot-tack window. The blend is processed on cast film lines with 30:1 L/D barrier screws at melt temperatures of 200–230°C; for blown film, a die gap of 1.8–2.4 mm and blow-up ratio of 2.0–2.5:1 are typical. Heat-seal performance is evaluated by ASTM F1921-18 hot-tack and ASTM F88/F88M-21 seal strength, using dwell times of 0.5–1.5 s and sealing pressures of 0.275–0.550 MPa. The dominant production problem during extended runs is die-lip buildup from EVA degradation species after approximately 8 h of continuous output, which produces optical defects and weak seal spots; purging with LDPE and reducing temperature to 160°C before shutdown reduces residue formation. Regulatory compliance for food packages is based on FDA 21 CFR 177.1350 for ethylene-vinyl acetate copolymers in finished food-contact layers, subject to conditions of use; EU compliance is assessed under EU 10/2011 with overall migration limit of 10 mg/dm² for plastic food-contact materials, with actual migration dependent on layer thickness, sealant coverage, and food simulant. Terminal finished products include lidding films, pouch sealant webs, frozen food packaging, and sealant layers in medical device overwraps where additional material qualification applies.
Injection-molded and compression-molded footwear midsoles use ELVAX 3190 at 15–35 wt% of the polymer blend, typically with ethylene-octene polyolefin elastomer, 1.5–3.0 phr azodicarbonamide blowing agent, 0.6–1.2 phr dicumyl peroxide crosslinking agent, and 1–3 phr zinc oxide or zinc stearate activator. The process conflict in this system is the alignment between peroxide crosslinking and blowing-agent gas generation; if melt temperature exceeds 120°C in the barrel before injection, premature blowing creates gas porosity, void lines, and poor cell structure. Mixing is conducted in internal mixers or Banbury cycles with drop temperatures of 105–110°C, followed by sheet calendering, cutting, and compression molding at 155–165°C for 8–12 min under 12–15 MPa hydraulic pressure. Injection molding lines for midsoles typically use clamp forces of 300–800 tonnes and mold temperatures of 165–175°C; cycle time is governed by cure development, measured by moving die rheometer under ISO 6502:2016. Quality is assessed by apparent density under ISO 845:2006, hardness under ISO 868:2003, compression set under ASTM D395-18 Method B at 50°C for 6 h, and rebound resilience by ASTM D3574-17. Finished footwear components sold into EU markets are evaluated under REACH Regulation (EC) No 1907/2006 Annex XVII restrictions for blowing-agent decomposition products and residual monomers; selected automotive or electronic adjacent uses may also require RoHS Directive 2011/65/EU screening. Amine-based accelerators are limited because they can lower the onset of crosslinking near 140°C, reduce melt flow and cause short shots; cure behavior should be confirmed before production scale-up. Terminal products include athletic and casual footwear midsoles, insoles, and shock-absorbing inserts.
For high-viscosity road binders and roofing membranes, ELVAX 3190 is incorporated at 2–6 wt% based on bitumen, using a high-shear rotor-stator mill or continuous inline mixer at 170–190°C. The bitumen is first dehydrated at 140°C, then the copolymer is metered under high shear for 45–120 min to reach a storage-stable dispersion. The main defect observed in production is storage separation when mixing temperature drops below 160°C or when the EVA level exceeds 6 wt% without aromatic compatibilizers; top/bottom softening point difference is measured per EN 1427:2015, and storage stability is evaluated by the cigar tube test under EN 13399:2010. Performance testing includes ring-and-ball softening point under EN 1427:2015, penetration under EN 1426:2015, elastic recovery under EN 13398:2010, and viscosity under EN 13302:2018. Road binder specifications are controlled by EN 14023:2010, while mixture-level performance follows the EN 12697 test series. Roofing membrane formulations use ASTM D6084-18 for elastic recovery and ASTM D5147-18 for sampling and testing of modified bituminous sheet materials. The high melt viscosity requires heated tank storage and insulated transfer lines; ambient milled asphalt handling is impractical. Terminal finished products include polymer-modified bitumen for high-stress road surfaces, bridge deck binders, and EVA/SBS hybrid roofing membranes.
Masterbatch carrier resins for pigment and additive concentrates use ELVAX 3190 at 30–50 wt% of the carrier system, with filler or pigment loading between 40–70 wt% depending on oil absorption and particle size. Production is carried out on co-rotating twin-screw extruders with L/D 44:1, side feeding, and vacuum venting; screw speed is set between 300–600 rpm, and barrel temperatures are controlled from 120°C feed to 180°C die. The main production failure is inadequate side-feeder venting, which leads to volatiles carryover, pellet porosity, and die-face plate pressure fluctuations above 2.0 MPa; this is corrected by balancing side-feed rate with main feed demand and maintaining vacuum below 0.08 MPa absolute. Dispersion quality is assessed by filter pressure value under EN 13900-5 or by microscopic dispersion analysis following ISO 18553:2002. Regulatory compliance for masterbatches is based on substance registration and restriction under REACH Regulation (EC) No 1907/2006; masterbatches used in electronic and electrical component coloration are screened against RoHS Directive 2011/65/EU Annex II substance limits. Processing above 190°C is avoided because EVA deacetylation increases volatiles, darkens the carrier, and lowers filter test performance; incoming pellets are pre-dried to 0.05% moisture. Terminal finished products include white masterbatches for polyolefin films, additive concentrates for agricultural films, and color concentrates for injection-molded components.
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ELVAX 3190 ethylene vinyl acetate copolymer is a random thermoplastic copolymer of ethylene and 25 wt% vinyl acetate. The grade is supplied in pellet form and is specified by a melt flow rate of 2.0 g/10 min measured at 190 °C under a 2.16 kg load in accordance with ASTM D1238 and ISO 1133-1:2022. The nominal density is 0.95 g/cm³ when tested under ASTM D1505. These coordinates place the material in the medium-vinyl-acetate, low-melt-flow region of the ELVAX grade slate. That combination is selected for hot-melt adhesives, wax modification, sealants, and polymer compounding where polar adhesion and cohesive strength are more important than very low melt viscosity.
Vinyl acetate comonomer disrupts polyethylene crystallinity, lowering the crystalline melting peak, increasing polarity, and improving compatibility with rosin ester and hydrocarbon tackifier resins. These changes appear as reduced heat-seal initiation temperature and enhanced wetting on polar substrates such as aluminum, poly(ethylene terephthalate), and primed paper. Because the resin contains no carboxylic acid groups, the adhesion mechanism differs from acid-modified ethylene copolymers and is not dependent on ionic neutralization.
At 25 wt% vinyl acetate, ELVAX 3190 has a lower melting peak and lower flexural stiffness than extrusion-grade EVA copolymers containing 9–18 wt% vinyl acetate. The higher polar comonomer concentration increases the solubility parameter of the polymer phase, which promotes interaction with polar tackifiers and metal oxide surfaces but also increases water vapor transmission and reduces resistance to nonpolar solvents. In heat-seal applications, the reduction in crystallinity lowers the seal initiation temperature by approximately 10–20 °C relative to an 18 wt% vinyl acetate copolymer of comparable melt flow. Exact values depend on seal dwell time, pressure, and film gauge.
Compared with acid-functionalized ethylene copolymers, ELVAX 3190 does not contain carboxylic acid functionality. Adhesion to aluminum foil and polyester film therefore arises from polar vinyl acetate dipole interactions rather than ionic or acid-base bonding. This distinction is operationally significant in formulations containing amine-based tackifiers or fillers that could neutralize acid groups; the neutral copolymer does not undergo the same acid-catalyzed ring-opening reactions with epoxy resins.
Against hot-melt grades with 28–33 wt% vinyl acetate and melt flow rates above 25 g/10 min, ELVAX 3190 exhibits lower melt flow, higher molten viscosity, longer open time, and higher cohesive strength at equivalent coating weight. Those properties are advantageous in profile wrapping, edge banding, and slower assembly operations; they are disadvantageous in high-speed noncontact spiral spray or fiberization where low melt viscosity is required. Grade selection between ELVAX 3190 and a higher-flow EVA should therefore be based on application temperature, wet-out time, and coating head geometry.
| Parameter | ELVAX 3190 | Low-VA extrusion class representative | High-VA high-MFR hot-melt class representative |
|---|---|---|---|
| Vinyl acetate content | 25 wt% | 18 wt% | 28 wt% |
| Melt flow rate at 190 °C/2.16 kg | 2.0 g/10 min | 2.5 g/10 min | 25 g/10 min |
| Adhesion to polar surfaces | Higher than low-VA class | Lower than ELVAX 3190 | Higher than ELVAX 3190 |
| Melt viscosity and open time | Higher melt viscosity, longer open time | Similar melt viscosity, lower tack | Lower melt viscosity, shorter open time |
The low-VA and high-VA columns are generalized industrial EVA categories for comparison and do not correspond to a named commercial grade.
The following table consolidates representative values from the manufacturer’s published technical data. Values are typical and should not be used as release specifications without reviewing a certificate of analysis for the specific lot.
| Property | Test protocol | Typical value |
|---|---|---|
| Vinyl acetate content | Manufacturer FTIR internal method | 25 wt% |
| Melt flow rate | ASTM D1238 / ISO 1133-1:2022, 190 °C, 2.16 kg | 2.0 g/10 min |
| Density | ASTM D1505 | 0.95 g/cm³ |
| DSC melting endotherm peak | ASTM D3418 | approximately 76 °C |
Because the melt flow rate is nominally 2.0 g/10 min, the melt is relatively viscous for hot-melt operations. In a gear-pump-assisted slot die, changes in melt flow rate of 0.2–0.3 g/10 min between production lots can shift pump discharge pressure and coat weight stability. Lot-to-lot viscosity variation should be monitored via ISO 1133-1:2022 and matched to line calibration. Published mechanical data for neat compression-molded specimens in specific end-use film geometries is limited; designers should generate application-specific peel, shear, and tensile data according to ASTM D1876 and ASTM D638-14 rather than relying on resin-only values.
Under ASTM D3418, the melting endotherm is broad and shifted to lower temperature relative to polyethylene homopolymer. The reduction in crystallinity decreases tensile modulus and increases elongation at break, but the exact mechanical response depends on specimen preparation and thermal history. Annealed specimens show higher crystallinity than quenched specimens, so comparative data must be generated under controlled cooling rates. The density of 0.95 g/cm³ is higher than low-density polyethylene because vinyl acetate contributes mass and polarity. This density should be used in gravimetric feeding and inventory calculations; bulk density of pellets may be different and should be measured for silo design.
When ELVAX 3190 is compounded into hot-melt adhesives, the resin is normally let down with tackifier and wax in a heated mixer or 40:1 L/D co-rotating twin-screw extruder. Barrel temperatures are profiled from 120 °C in the feed zone to 160 °C at the die to limit heat history. Processing at the high end of the range improves wet-out but shortens thermal lifetime; residence time at melt temperature in batch mixers should be limited to 30–45 minutes.
Typical hot-melt formulations use 20–40 wt% ELVAX 3190, 30–50 wt% tackifier, and 10–30 wt% paraffin or Fischer-Tropsch wax. The wax addition lowers formulation viscosity and shortens set time, while the EVA provides cohesive strength and peel adhesion. For slot-die coatings, line speeds of 30–150 m/min are attainable only after viscosity adjustment. For spiral spray, the formulation viscosity at 175 °C is often reduced below 2 Pa·s by using higher wax loadings or adding a higher-MFR EVA grade. Viscosity measurements should follow ASTM D3236 for hot-melt adhesives.
Tackifier compatibility is not unlimited. Aliphatic hydrocarbon resins with low polarity may phase-separate from the vinyl acetate-rich phase, causing haze and loss of peel strength. Rosin esters and aromatically modified hydrocarbon resins generally show better compatibility with 25 wt% vinyl acetate; the selection should be confirmed by measuring glass transition temperature and peel adhesion after 7 days at 40 °C.
Adhesion failures on production lines are frequently caused by inadequate substrate preheating rather than by resin properties. When applied to aluminum foil at coat weights below 20 g/m², the molten film can freeze before wetting. Heated nip rolls set at 40–60 °C are used to maintain contact and improve peel adhesion measured by ASTM D1876. On converting lines, lot-to-lot variations in melt flow rate should be recorded against coat weight and pump speed. A lot shift of 0.2 g/10 min can change the pressure drop across a slot die and produce visible streak defects if the die temperature is not trimmed.
Compounding of ELVAX 3190 into paraffin and microcrystalline waxes is carried out at loadings of 3–15 wt% to harden wax, reduce crystal size, and improve adhesion to kraft paper and corrugated board. In asphalt and modified-bitumen roofing compounds, the copolymer acts as a polymeric modifier that increases softening point and low-temperature flexibility when blended at levels of 5–12 wt%; published data for specific asphalt source compatibility is limited because bitumen composition varies by crude source and oxidation level.
Sealant formulations using ELVAX 3190 often combine the resin with polyisobutylene, butyl rubber, or tackifying resins. The 25 wt% vinyl acetate content improves adhesion to glass and coated metal. The material has no reactive silane functionality; for moisture-curing sealants it must be blended with silane-grafted polymers or used as a non-crosslinked component. In solvent-borne sealants, the resin is dissolved in toluene or xylene at solids levels of 20–40 wt%; final viscosity is controlled by solvent selection and resin concentration.
Food-contact status for ELVAX 3190 is governed by FDA 21 CFR 177.1350 for ethylene-vinyl acetate copolymers. The resin may be used as a component of articles intended for food contact provided that the finished article meets the extraction limitations and end-use conditions described in the regulation. For the European market, compliance is assessed under EU Regulation (EU) No 10/2011 as amended, with overall migration testing performed according to EN 1186 or equivalent. The unfilled resin is not formulated with intentionally added lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls, or polybrominated diphenyl ethers; conformity with RoHS Directive 2011/65/EU Annex II should be documented by the supplier for each lot.
REACH registration status and candidate list content should be confirmed through the safety data sheet. The absence of phthalate plasticizers and bisphenol A in the base polymer does not exempt a converted article from substance-specific restrictions if the formulation includes external plasticizers, tackifiers, or colorants.
Thermal processing of ELVAX 3190 is constrained by the onset of vinyl acetate deacetylation at approximately 230 °C. Above this threshold, acetic acid is evolved, melt viscosity drifts, gel particles may form, and carbon steel process components are subject to accelerated corrosion. Extruder vent ports should be connected to acid-resistant vacuum lines, and melt temperature sensors should be positioned near the die to detect shear-induced temperature overshoot. The recommended melt temperature for extended runs is 160–180 °C; short excursions to 190 °C are tolerated, but residence time above 200 °C should be minimized.
Pre-drying is required when pellet surface moisture exceeds 0.05 wt% or when packaging has been exposed to relative humidity above 60%. Drying in a desiccant dryer at 60–70 °C for 4–6 hours reduces bubbles and surface defects in extrudate. The resin should be kept away from strong oxidizing agents and chlorinated solvents. In compounding, amine-based additives should be evaluated separately because they can function as deacetylation catalysts or form acetate salts that affect color and adhesion.
Processors should not combine ELVAX 3190 with highly basic fillers such as sodium hydroxide or calcium oxide at melt temperatures; these materials can accelerate ester cleavage and embrittle the final compound. Process vent condensate should be treated as dilute acetic acid and handled in corrosion-resistant scrubbers or waste-treatment systems.
