| HS Code | 276245 |
| Vinyl Acetate Content | 15 % |
| Melt Flow Index | 2.0 g/10min (190°C, 2.16kg) |
| Density | 0.937 g/cm³ |
| Melting Point | 92 °C |
| Vicat Softening Point | 68 °C |
| Tensile Strength | 20 MPa |
| Elongation At Break | 700 % |
| Shore A Hardness | 94 |
| Brittle Temperature | -70 °C |
| Flexural Modulus | 80 MPa |
As an accredited HANWHA EVA 1159 Ethylene Vinyl Acetate Copolymer factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | HANWHA EVA 1159 ethylene vinyl acetate copolymer is supplied as pellets in 25 kg multilayer paper bags, ensuring safe handling and product integrity. |
| Container Loading (20′ FCL) | HANWHA EVA 1159 loaded in 20' FCL as heat-sealed bags on pallets, safely secured for transport. |
| Shipping | HANWHA EVA 1159 is a non-hazardous ethylene vinyl acetate copolymer resin. Ship in sealed, moisture-proof packaging to prevent contamination. Store in a cool, dry area away from direct sunlight and heat sources. No special transport restrictions apply; ensure clean, covered containers to protect against physical damage during transit. |
| Storage | Store HANWHA EVA 1159 in a cool, dry, well-ventilated area away from direct sunlight, heat, and ignition sources. Keep containers tightly sealed to prevent moisture absorption and contamination. Avoid prolonged storage above 30°C to prevent blocking or degradation. Under these conditions, shelf life is typically 12 months from delivery. |
| Shelf Life | Store in a cool, dry place away from sunlight. Shelf life is typically two years from manufacture date. |
Hanwha EVA 1159 is an ethylene vinyl acetate copolymer with 15 wt% vinyl acetate comonomer and a melt flow index of 0.9 g/10 min measured under ISO 1133-1:2022 at 190 °C and 2.16 kg. Downstream applicability is constrained to processes that benefit from higher melt strength, moderate polarity from the vinyl acetate side groups, and compatibility with polyolefins and polar fillers. The following profiles cover only industrial configurations for which publicly available compounding data, standard test methods, and equipment-level processing practice can be cross-referenced. Where a specific formulation against this grade has not been published, the text states the limitation rather than extrapolating unverifiable performance.
Two-roll compounding of crosslinkable midsoles charges EVA 1159 at 65–85 phr of the polymer phase, together with 15–35 phr of a lower-crystallinity ethylene-octene POE, 2.5–4.5 phr azodicarbonamide, 0.6–1.0 phr dicumyl peroxide, 1.0–2.0 phr zinc oxide, and 0.5–1.2 phr zinc stearate. The blowing-agent ratio is indexed to a target foam density of 0.18–0.25 g/cm³; published data for this specific grade at the lower density boundary are limited, so the 2.5 phr threshold should be validated by thermomechanical analysis before production release. Regulatory compliance for EU-bound footwear includes REACH Regulation (EC) No 1907/2006 Annex XVII entries 51 and 52 phthalate restrictions, while physical test methods track ASTM D3574-17 Test B compression set and ISO 815-1:2014 compression set at 23 °C and 70 °C. Production-scale two-roll mills with friction ratio 1.10–1.20 and roll temperature 105–115 °C are used to disperse the peroxide without tripping the blowing agent; internal mixers are operated with ram pressure 0.45–0.65 MPa and drop temperature 105–112 °C. The compounded sheet is calendered to 1.5–3.0 mm, then compression-moulded at 152–162 °C for 10–15 min under 10–15 MPa, followed by cooling to below 45 °C before de-moulding. Amine-based co-stabilizers and amine-containing antioxidant packages are omitted from this compound because they interfere with peroxide cure kinetics. The critical process conflict is that stock temperatures above 115 °C shorten the dicumyl peroxide scorch time and create pre-cured gel particles, while temperatures below 100 °C leave azodicarbonamide agglomerates visible as surface grain at 20× optical magnification. Finished product types include athletic midsole slabs, orthotic insoles, wedge sandal units, and anti-fatigue mat foam.
In blown-film lines producing frozen-food sealant webs, 20–40 wt% EVA 1159 is let down into metallocene LLDPE with C8 comonomer to depress heat-seal initiation temperature while avoiding seal-stick at high-speed form-fill-seal jaw temperatures. Typical sealant-layer formulation is 20–40 wt% EVA 1159, 55–75 wt% metallocene LLDPE, 2–5 wt% synthetic silica antiblock masterbatch, and 1–3 wt% slip masterbatch. The appropriate compliance framework is EU Regulation (EU) No 10/2011 with an overall migration limit of 10 mg/dm² and a vinyl acetate specific migration limit of 12 mg/kg, along with U.S. FDA 21 CFR 177.1350 for ethylene-vinyl acetate copolymers in food contact. Coextruded 3-layer lines run die gap 1.0–2.2 mm, blow-up ratio 2.0–3.0, and melt temperature 175–195 °C; frost-line height is held within 10–15 cm from the die to control orientation. A known production failure is die-lip acetate deposition after 60–80 h continuous operation at melt temperatures above 200 °C, which appears as gel defects in the seal layer; barrier screws with L/D 28:1 and screen pack 80/120/80 mesh reduce the frequency but do not eliminate the need for periodic purging. Finished product types are frozen vegetable pouches, ice cream packaging, and resealable stand-up pouches.
Where low-voltage building cable must pass IEC 60754-1:2011, IEC 60754-2:2011, and IEC 61034-2:2019, EVA 1159 serves as the char-forming polyolefin phase in a compound with 120–180 phr aluminium trihydrate and 20–40 phr magnesium hydroxide relative to 100 phr polymer. In weight terms, EVA 1159 is loaded at 25–40 wt% of total compound; LLDPE is kept at 5–12 wt%, PE-g-MAH at 2–5 wt%, zinc borate at 3–7 wt%, and hindered phenolic phosphite antioxidant at 0.3–0.8 wt%. The compliance envelope includes pH ≥ 4.3 and conductivity ≤ 10 µS/mm under IEC 60754-2:2011, minimum light transmittance of 60% under IEC 61034-2:2019, and cable flame propagation under IEC 60332-1-2:2004/AMD1:2015. Production-scale dry compounding uses a co-rotating twin-screw extruder with 40:1 L/D, atmospheric vent, temperature profile 120/130/140/145/145/140 °C from feed to die, screw speed 220–300 rpm, and die plate melt pressure 4–8 MPa. Aluminium trihydrate is pre-dried at 105 °C for 4 h when free moisture exceeds 350 ppm; EVA 1159 is pre-dried at 70 °C for 3 h only at relative humidity above 60%. Amine-based flame retardants are deliberately excluded because their presence raises smoke evolution and acid-gas formation conflicts with the halogen-free test matrix. The principal process boundary is that aluminium trihydrate begins reversible endothermic dehydration near 180–200 °C; therefore any melt-temperature overshoot above 165 °C in the die zone produces strand porosity and pellet fracture. A second conflict is high filler loading raising specific energy input to 0.18–0.24 kW·h/kg, which can exceed torque limits on 150 kW drive units if screw volume is not derated by 10–15%. Terminal product types are halogen-free low-voltage tray cable sheathing, building wire jacketing, and charging-cable jacketing for electric vehicle supply equipment where low-smoke and low-acid emissions are part of the public specification.
Closed-cell industrial gasketing compounds based on EVA 1159 are compounded at 50–70 wt% of the polymer phase with low-density polyethylene, 3.0–5.0 phr azodicarbonamide, 0.7–1.2 phr dicumyl peroxide, 1.0–2.0 phr zinc oxide, and 0.5–1.0 phr stearic acid. Specifications are drawn from ASTM D1056-20 for closed-cell expanded rubber, UL 94 HBF horizontal burn for foam, and FMVSS 302 for automotive interior components; global REACH Annex XVII phthalate restrictions apply. Continuous hot-press lines preheat the compounded web to 100–110 °C, cure in a heated press at 160–180 °C for 6–10 min, and cool under pressure to below 50 °C. Batch-to-batch variance in cell size is controlled by sieving azodicarbonamide through 200 mesh and by holding dwell time temperature within ±3 °C; platen parallelism below 0.1 mm/m is required to prevent density gradients. The higher cure plateau relative to footwear foam reduces compression set but narrows the processing window, so compounds that leave the hot press below 155 °C can exhibit residual DCP by-products and inconsistent cell collapse after cooling. Finished product types include HVAC flange gaskets, sports flooring, demountable automotive mats, and thermal insulation backing.
Extrusion of flexible EVA profiles, edge trim, and appliance door seals uses EVA 1159 at 80–95 wt% of the compound, with 2–4 wt% color masterbatch, 0.5–1.5 wt% erucamide slip masterbatch, and 0.2–0.5 wt% hindered phenolic antioxidant. Compliance for appliance seals is normally restricted to RoHS Directive 2011/65/EU for electrical and electronic equipment, REACH SVHC screening, and heat-ageing verification under ISO 188:2011 for 7 days at 100 °C. Single-screw extrusion with L/D 30:1, barrel profile 140/160/170/180 °C, die temperature 190 °C, and cooling water at 4–10 °C is typical; draw-down is limited to ≤ 1.5:1 because unaged EVA 1159 retains high melt strength but low hot-elongation tolerance. A frequently documented failure is die-land split at draw ratios above 2:1, producing fold lines in door seals. Terminal product types are appliance door seals, extruded edge trim, and low-pressure flexible hose.
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Hanwha EVA 1159 is an ethylene-vinyl acetate copolymer whose manufacturer-published datasheet identifies a nominal vinyl acetate comonomer content of 15 wt%, a melt mass-flow rate of 0.9 g/10 min at 190 °C/2.16 kg under ISO 1133-1:2022, and a density of 0.938 g/cm³ under ISO 1183-1:2019. These parameters locate the product in the low-MFR segment of 15% VA ethylene-vinyl acetate copolymers, in which melt strength is higher than that of 1.5 g/10 min or 3.0 g/10 min EVA grades, but flow length is shorter. The grade is assessed for blown film, extrusion coating, crosslinked foam, compounded wire-and-cable jacket stock, and profile extrusion. The actual selection is governed by the balancing of melt strength, adhesion, and thermal stability against the limitations imposed by higher melt pressure and reduced injection-moulding flow. Moisture uptake must be controlled before processing, because EVA resin above 0.05 wt% water by ISO 15512:2019 can hydrolyse acetate groups during extrusion, generating acetic acid and causing surface voids, die-lip contamination, and fluctuating head pressure.
In blown film equipment, the 0.9 g/10 min MFR of EVA 1159 produces higher melt viscosity than EVA grades with MFR values from 1.5 g/10 min to 3.0 g/10 min, which raises bubble stability but also raises backpressure at the screen changer. On a single-screw extruder with a 24:1 to 30:1 L/D ratio and a barrier screw, the material processes with a flat barrel profile from 150 °C in the feed zone to 195 °C in the metering zone, with head and die zones maintained at 195 °C to 205 °C. The bubble frost line is positioned above the die by 1.5 to 2.5 die diameters, because the higher melt strength of the low-MFR resin delays draw resonance and widens the air-ring operating window. Die lip gaps below 0.8 mm may require melt temperatures near 210 °C to avoid melt fracture; raising screw speed instead of temperature is not recommended because the grade’s 15 wt% VA comonomer reduces crystallinity and lowers thermal conductivity into the melt, increasing shear-heating gradients. Pre-die pressure is monitored using melt pressure transducers with a full-scale range of 35 MPa to 70 MPa; the signal is used to set screen-pack mesh and to detect melt fracture onset. The higher viscosity reduces neck-in in extrusion coating, but the line speed ceiling is lower than that of an equivalent 1.5 g/10 min EVA grade at the same coating thickness.
High-shear compounding of EVA 1159 is conducted on co-rotating twin-screw extruders with 40:1 L/D and segmented screw configurations. The melt temperature is kept below 230 °C; above this threshold the vinyl acetate sequences undergo thermal deacetylation, liberating acetic acid. The acid attacks nitrided barrel liners and interferes with silane coupling agents and alkaline fillers. Because the VA content is 15 wt%, the labile acetate concentration is lower than in 18 wt% to 28 wt% EVA products, which reduces the acid-evolution rate at an equivalent melt temperature. Acid-scavenging stabilizers such as calcium stearate or zinc stearate are typically used at 0.1 phr to 0.3 phr; exact dosage is determined by thermogravimetric analysis under ISO 11358-1:2022 after filler moisture and flame-retardant decomposition products are evaluated. The grade is not compounded with amine-based stabilizers in peroxide-curing formulations because amines may quench free-radical cure and shift scorch time. Batch-to-batch variance in moisture and pellet shape can change feed intake in the first barrel zone; feed-zone temperature is therefore controlled near 40 °C to 60 °C to prevent pellet bridging without prematurely softening the resin.
In peroxide-cured articles, the selection of EVA 1159 over a higher-vinyl-acetate grade is often driven by the lower concentration of acetate groups available for acid elimination. Cure behaviour is characterized by moving die rheometry under ASTM D5289-17, with torque curves used to determine scorch time and maximum cure state. Dicumyl peroxide levels for crosslinked foam and wire insulation are normally set between 0.5 phr and 1.5 phr, but the exact dosage depends on the desired gel fraction and the dispersion of co-curing agents such as triallyl cyanurate. The grade’s low MFR retards bubble coalescence in gas-expanded foam before crosslinking, which supports smaller cell size and more uniform density distribution in continuous hot-air or press-cure ovens. Published foam expansion data for this specific EVA 1159 grade is limited; general behaviour of 15 wt% VA/0.9 MFR copolymers should not be extrapolated to industrial formulations without pilot-scale foaming on the target line because nucleating agent type, blowing agent decomposition profile, and cure pressure shift cell morphology. In crosslinked wire-and-cable jacket stock, hot-set elongation is evaluated under IEC 60811-507, and gel fraction is measured by extraction per ASTM D2765-16; undercured parts from amine-quenched systems commonly fail hot-set requirements before they show visible surface defects.
The low MFR of EVA 1159 makes it less suitable than 1.5 g/10 min or 3.0 g/10 min EVA grades for thin-wall injection moulding. For nominal wall sections below 1.5 mm, gate freeze-off occurs earlier because the higher-viscosity melt loses heat rapidly and ceases to pack the cavity. Production-scale machines with clamp force of 80 t to 150 t and intensification ratios sufficient to generate effective injection pressures of 80 MPa to 110 MPa are required for multicavity tools with long flow paths. Mould temperature is maintained at 20 °C to 40 °C; lower temperatures reduce cycle time but raise residual stress and warpage in flat parts. Gate diameter should be increased compared with high-MFR EVA, and the melt cushion should be kept at 3 mm to 5 mm to maintain packing pressure. Spiral-flow testing under ISO 294-1:2017 is recommended before committing to tool steel because datasheet MFR alone does not capture the solidification behaviour of the grade in thin sections. Cavity-pressure transducers record the after-fill pressure decay; when the decay slope exceeds the mould-temperature rise under hold pressure, the gate seal time has been reached and additional hold time no longer contributes to part mass.
In crosslinked wire-and-cable jacket stock, EVA 1159 is blended with LDPE, EPDM, or mineral flame retardants such as aluminum trihydrate. The 15 wt% VA content improves filler wetting and flexibility relative to LDPE homopolymer, while the low MFR contributes melt strength during pressure-type extrusion of thin-wall cable jackets. The compound must be processed below the dehydration onset of aluminum trihydrate, typically near 180 °C, which places stricter barrel-temperature limits on the compounding line than would be necessary for unfilled EVA. A twin-screw extruder with barrel cooling in the first zones and a screw speed capped to maintain melt temperature below 200 °C is used when filler loadings exceed 50 phr. Finished cable jackets crosslinked with peroxide are tested for hot-set elongation under IEC 60811-507; excessive hot-set values indicate undercure, while embrittled surfaces with strong odour suggest oxidative degradation during extrusion.
Compared with an EVA containing 18 wt% or 28 wt% vinyl acetate, EVA 1159 exhibits lower polarity, higher crystallinity, lower elongation at break, and lower adhesive wetting on polar substrates. These differences are directly observable as a higher melting endotherm under ISO 11357-3:2018; 15 wt% VA copolymers of this density typically produce a primary melting maximum between 88 °C and 94 °C, whereas 28 wt% VA grades melt over a broader and lower range. The lower VA content reduces gas permeability and plasticizer-like flexibility but improves thermal stability and lowers tack. Against an EVA of equivalent 15 wt% VA and 1.5 g/10 min MFR, EVA 1159 produces greater die pressure, lower drawdown, longer relaxation time, and reduced neck-in in extrusion coating. Against LDPE homopolymer, EVA 1159 reduces seal initiation temperature and increases low-temperature flexibility because the acetate comonomer introduces side-chain spacing that disrupts crystal packing; however, the same side chains soften the pellet, lower bulk density, and require controlled feed-zone temperatures to avoid pellet bridging in the hopper.
Regulatory positioning of neat EVA 1159 must be verified against the lot certificate and the final formulation. Ethylene-vinyl acetate copolymers can be formulated to meet FDA 21 CFR 177.1350 for repeated-use rubber articles, but the neat resin is not automatically food-contact compliant because the finished article also contains processing stabilizers, slip agents, and degradation products that affect overall migration. Under European food-contact frameworks, specific migration testing under the relevant simulant is required; no universal declaration can be made from the resin datasheet. RoHS compliance for the base polymer is typically assessed against the restricted substance limits in 2011/65/EU, and REACH registration is documented under EC 1907/2006. Converters must confirm that flame retardants, colour masterbatches, and coupling agents do not introduce restricted substances.
Operating boundaries for EVA 1159 are defined by moisture uptake, melt temperature, and residence time. Moisture above 0.05 wt% by ISO 15512:2019 hydrolyses acetate groups; sustained melt temperature above 230 °C initiates deacetylation; and idle residence times beyond 10 min in a heated extruder increase gel and black-spec formation. The grade is not suited to thin-wall injection moulding below 1.5 mm wall thickness without flow simulation and enlarged gates. Formulations containing amine-based antistatic additives should not be combined with peroxide cure without reformulation because amine quenching of free radicals can produce undercured parts and excessive hot-set elongation. The most reliable process parameters are obtained from production-scale trials with 24:1 to 30:1 L/D single-screw extruders, 40:1 L/D twin-screw compounding lines, and injection machines with cavity-pressure transducers; datasheet values alone cannot substitute for tooling- and screw-specific development.
