| HS Code | 293209 |
| Product | HANWHA EVA 1326 |
| Va Content | 26% |
| Melt Index | 2 g/10 min (190°C, 2.16 kg) |
| Density | 0.950 g/cm³ |
| Melting Point | 72°C |
| Vicat Softening Point | 41°C |
| Tensile Strength | 18 MPa |
| Elongation At Break | 850% |
| Hardness | 84 Shore A |
| Crystallization Point | 48°C |
| Glass Transition Temperature | -30°C |
As an accredited HANWHA EVA 1326 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | HANWHA EVA 1326 is supplied in 25 kg net polyethylene-lined paper bags, palletized and shrink-wrapped for safe transport. |
| Container Loading (20′ FCL) | Load 20′ FCL with HANWHA EVA 1326 resin in 25-kg bags, palletized and shrink-wrapped, approximately 25 metric tons per container. |
| Shipping | Hanwha EVA 1326 is a non-hazardous ethylene-vinyl acetate copolymer resin, typically shipped as solid pellets in woven PP bags or bulk containers. It should be transported in clean, dry, covered vehicles to avoid moisture and contamination, with storage away from heat sources and direct sunlight. |
| Storage | Store HANWHA EVA 1326 in a cool, dry, well-ventilated area away from direct sunlight, heat, and ignition sources. Keep containers tightly closed and protect from moisture and physical damage. Avoid prolonged storage at high temperatures to prevent agglomeration or degradation. Follow standard polymer storage practices and keep out of reach of unauthorized personnel. |
| Shelf Life | Shelf life is 24 months from manufacture when stored in a cool, dry area away from heat, moisture, and direct sunlight. |
Hanwha EVA 1326 is characterized by a nominal 26 wt% vinyl acetate content, a melt flow rate of 2.0 g/10 min under ASTM D1238-23 at 190°C and 2.16 kg, and a density of 0.951 g/cm³ under ASTM D792-20. The vinyl acetate content is measured by ASTM D5594-18 or an equivalent FTIR method, with lot-to-lot variation recorded on the certificate of analysis. This comonomer level reduces crystallinity and shifts the melting endotherm, which alters the processing window in crosslinked foam, cable compound, sealant film, modified bitumen, technical foam, and masterbatch carrier systems. The following application scenarios are described only where production-scale equipment behaviour or validated formulation boundaries justify inclusion.
At the 26 wt% vinyl acetate level, EVA 1326 is formulated on a parts-per-hundred-resin basis before crosslinking and blowing. The production formulation uses 100 phr EVA 1326, 2.5–4.0 phr azodicarbonamide, 0.6–0.9 phr dicumyl peroxide at 40% active content on calcium carbonate carrier, 1.0–3.0 phr zinc oxide, 0.5–1.0 phr stearic acid, and 5–15 phr calcium carbonate. Zinc oxide activates azodicarbonamide decomposition above 155°C, while stearic acid reduces residue adhesion to mill rolls during calendering. Mixing is performed in an internal mixer at 100–110°C for 6–10 min, and the compound is sheeted on a two-roll mill with a nip gap of 2.0–4.0 mm. The calendered preform is compression-moulded at 155–160°C for 9–12 min under 150–180 kgf/cm². Foam density remains between 0.15 g/cm³ and 0.20 g/cm³. Compression set after 24 h at 50% deflection is monitored under ISO 815-1:2017; values above 35% indicate undercure or excessive blowing. Restriction compliance follows REACH Regulation (EC) No 1907/2006 Annex XVII and RoHS Directive 2011/65/EU Annex II for heavy-metal residues and banned azocolourants. Finished components include midsoles, insoles, wedge soles, and orthotic inserts.
Low-smoke, halogen-free cable sheathing based on EVA 1326 requires high mineral flame-retardant loadings, which creates a tensile and elongation balance problem at the extrusion stage. A production compound uses 100 phr EVA 1326, 120–160 phr aluminium trihydrate, 20–40 phr magnesium dihydroxide, 10–20 phr zinc borate, 0.5–1.0 phr hindered phenolic antioxidant, and 1.0–2.0 phr polyethylene wax processing aid. Because melt flow rate is 2.0 g/10 min at 190°C under 2.16 kg, a co-rotating twin-screw extruder with an L/D ratio of 30:1 or 36:1 is used, with barrel temperatures set at 120–140°C and the die at 150–165°C. Premature peroxide crosslinking is avoided by keeping compound temperature below 135°C when dicumyl peroxide is used. The cable sheath is extruded over the insulated core and then crosslinked in a steam or dry-cure tube at 170–180°C. Compliance is verified against IEC 60332-1-2:2015, EN 50525-1:2011, and RoHS Directive 2011/65/EU Annex II. End products include control cable outer sheaths, instrument cable jackets, and marine cable outer covering.
| Standard designation | Test target | Production audit item |
|---|---|---|
| EN 50525-1:2011 | Low-voltage cable sheathing mechanical and thermal requirements | Tensile strength and elongation after ageing |
| IEC 60332-1-2:2015 | Vertical flame propagation for single wire or cable | Char height below 425 mm |
| IEC 60754-1:2019 | Halogen acid gas content | HCl below 5 mg/g |
| RoHS 2011/65/EU Annex II | Restricted heavy metals and brominated flame retardants | XRF screening plus wet chemistry |
In three-layer coextruded film structures, EVA 1326 is specified as the heat-seal layer because the vinyl acetate content lowers the seal initiation temperature and broadens the hot-tack window. Published seal-initiation curve data for this exact grade at the 8–15 µm layer boundary are limited; converter trials on a three-layer blown-film line are used to verify seal strength. Typical constructions use 100% EVA 1326 or a blend containing 10–20 wt% LDPE of melt index 2.0 g/10 min to adjust seal strength. The extrusion process uses a blown-film die with melt temperature 180–210°C, air ring cooling at 10–20°C, and blow-up ratio between 2.0:1 and 3.0:1. The sealant layer thickness is limited to 8–15 µm when the total film gauge is 40–70 µm to prevent interlayer delamination caused by differential crystallinity. Heat-seal initiation temperature is measured on a laboratory heat sealer at 0.4 MPa bond pressure and 0.5 s dwell; seal initiation is typically recorded below 90°C. Hot-tack strength is tested under ASTM F1921-12. Food-contact compliance is established under FDA 21 CFR 177.1350 and European Union Regulation (EU) No 10/2011, including overall migration testing under test condition OM2. End products include frozen-food pouches, lamination sealant webs, medical device packaging, and liquid packaging films.
Polymer-modified bitumen production with EVA 1326 replaces a portion of the maltene fraction with a semi-crystalline polyolefin network, changing viscoelastic behaviour at service temperatures. The addition level is 4–7 wt% of the total bitumen mass. A high-shear Silverson-type mixer is used at 2,000–3,000 rpm for 2–3 h; insufficient shear leaves EVA domains above 10 µm and reduces low-temperature flexibility. The modified bitumen is then coated onto a polyester or glass-fibre carrier at 1.0–2.5 mm thickness. Softening point is determined by ring-and-ball method under ASTM D36-14; low-temperature flexibility is evaluated under EN 1109:2013. Compliance is assessed under EN 13707:2013 and ASTM D5147-18. Terminal products include torch-on roofing membranes, self-adhesive waterproofing sheets, and bridge deck membranes.
For closed-cell technical foam cured at reduced temperature, the half-life of dicumyl peroxide at 155°C controls the point at which gas evolution from azodicarbonamide overlaps with network formation. A formulation of 100 phr EVA 1326, 3.0–5.0 phr azodicarbonamide, 0.8–1.2 phr dicumyl peroxide, 1.0–2.0 phr zinc oxide, and 5–20 phr talc or calcium carbonate is used. The compound is roll-milled at 95–105°C, calendered to 2.0–6.0 mm sheet, and then press-cured at 150–160°C for 10–14 min. The resulting foam has a closed-cell content above 85% when measured by ISO 4590:2016. Water absorption is tested under ISO 2896:2018, and compression set under ISO 815-1:2017. Dimensional stability is measured at 80°C for 24 h; linear change above 2.5% indicates undercure. End products include HVAC sealing gaskets, expansion joint fillers, automotive NVH gaskets, and marine fender pads.
When EVA 1326 is selected as a masterbatch carrier, the acid number of the dispersant package and the particle size distribution of the pigment determine extrusion stability. The carrier is compounded in a co-rotating twin-screw extruder with an L/D ratio of 40:1 or 44:1, using a barrel temperature profile of 120–180°C and screw speed 400–600 rpm. The formulation comprises 40–55 wt% EVA 1326, 40–60 wt% organic or inorganic pigment, and 3–8 wt% dispersant. The acidic dispersant package must maintain an acid number below 5 mg KOH/g to avoid hydrolysis of the acetate group. Letdown ratios of 2–5 wt% are used at the converter. Compliance testing follows RoHS Directive 2011/65/EU Annex II for heavy metals, CONEG packaging legislation for Pb, Cd, Cr(VI), and Hg limits, and FDA 21 CFR 177.1350 when the masterbatch is used in food-contact packaging. Terminal products include colour masterbatches for extrusion lamination, additive concentrates for EVA foam production, and UV-stabilizer concentrates for greenhouse films.
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Hanwha EVA 1326 is a thermoplastic ethylene-vinyl acetate random copolymer manufactured by high-pressure autoclave polymerisation and supplied in pellet form for compounding, extrusion, injection moulding, and hot-melt adhesive formulation. The grade designation encodes a nominal vinyl acetate content of 26% by weight and a melt flow rate of 6 g/10 min determined at 190°C under a 2.16 kg load in accordance with ISO 1133-1:2022. The polymer density is 0.950 g/cm³ when measured under ISO 1183-1:2019 at 23°C. Differential scanning calorimetry under ISO 11357-3:2018 at a heating rate of 10°C/min records a melting peak near 74°C. Typical mechanical values include tensile strength at break of 12 MPa and elongation at break of 800% on type 5A specimens tested at 50 mm/min per ISO 527-2, with Shore A hardness of 79 after 15 s indentation under ISO 868. The Vicat softening temperature is approximately 47°C using method ISO 306/A50 with 50 N load and 50°C/h ramp. Compared with lower-vinyl-acetate EVA grades, EVA 1326 has a lower crystalline melting point, reduced flexural stiffness, higher polar adhesion, and improved low-temperature flexibility.
Because the vinyl acetate co-monomer disrupts polyethylene crystallinity, EVA 1326 exhibits a broader melting range and lower plateau modulus than an ethylene-vinyl acetate copolymer containing 15% vinyl acetate. The higher polar co-monomer content increases compatibility with rosin ester tackifiers, aluminium trihydroxide, and calcium carbonate. The trade-off is lower resistance to non-polar hydrocarbons and greater water vapour permeability. These property shifts are not linear with vinyl acetate content; the thermal stability plateau narrows as vinyl acetate content approaches 28%, making processor temperature control more critical for EVA 1326 than for lower-VA grades.
Across the 170°C to 190°C hot-melt adhesive coating window, EVA 1326 maintains a shear-thinning viscosity that allows gear-pump delivery and low-tension web coating. Melt temperature excursions above 220°C accelerate vinyl acetate deacetylation, produce acetic acid, and increase gel formation; transfer lines and dies are therefore specified with stainless steel or aluminium surfaces and localised fume extraction. On a co-rotating twin-screw extruder with L/D 40:1 and barrel zones set from 120°C to 180°C, die melt temperature is typically held below 210°C to avoid resin degradation, and screen-changer pressure variation is maintained below 12% through backpressure control. During injection-moulded seal trials on machines with clamp force between 80 t and 120 t, fill time increased when melt temperature fell below 160°C; mould temperatures from 20°C to 40°C allowed ejection but raised frozen-in orientation in wall sections thicker than 3 mm. The Vicat softening point near 47°C means that stacking loads and warehouse temperatures above this value can generate blocking in unmodified films.
Compounding of EVA 1326 with high loadings of calcium carbonate or aluminium trihydroxide requires split-feed extruders to avoid excessive torque. Because the polymer softens near 47°C, pellet masterbatches with high filler content can agglomerate during long silo storage above 35°C; warehouse temperature and silo rotation should be controlled. For pigment masterbatch dispersion, single-screw extruders with barrier screws and Maddock mixing sections operating at screw speeds from 60 rpm to 120 rpm are used, and filter packs with 60 to 120 mesh screens remove agglomerates. Published data for this specific configuration is limited where downstream melt pumps alter residence-time distribution.
Hot-melt adhesive formulations combine EVA 1326 with tackifier resins, microcrystalline or paraffinic waxes, and stabilisers. The 26% vinyl acetate content improves adhesion to coated board, paper, and aluminium, while the melt flow rate of 6 g/10 min supports application by slot-die, roller, or nozzle at 170°C to 190°C. Viscosity of a formulation containing 30% EVA 1326 is typically adjusted to 1.0 Pa·s to 2.5 Pa·s by selecting waxes with melting points between 80°C and 100°C; set time and open time are controlled primarily by wax type and tackifier softening point rather than the base copolymer alone. For carton-sealing lines, open time of EVA 1326-based hot-melt adhesives is commonly 5 s to 15 s, and set time 0.5 s to 1.5 s, depending on wax and tackifier selection. Viscosity stability at 175°C over an 8 h pot life is evaluated by measuring viscosity change; a rise exceeding 10% indicates oxidation or acetic acid formation and requires stabiliser adjustment. These values are start-point settings and must be confirmed by inline packaging trials because board moisture and line speed alter set behaviour.
Because EVA 1326 softens near 47°C, direct substitution into extrusion-coated structures can lower hot-tack performance at 120°C even though heat-seal strength at 90°C improves. Hot-tack values are measured under ASTM F1921; the higher seal strength at lower temperature is useful for packaging lines running reduced sealing-bar temperatures, but the same softness increases blocking on haul-off rollers. Chill-roll release is another constraint. The higher vinyl acetate content increases adhesion to polished chromium surfaces, so release agents are applied at 0.2% to 0.5% solution concentration or PTFE-coated rollers are used to prevent web tear. In comparison with a 15% vinyl-acetate reference grade, EVA 1326 shows a melting peak roughly 20°C lower, Shore A hardness about 10 points lower, and higher oxygen permeability because of reduced crystallinity. These differences must be re-evaluated when food-contact or oxygen-barrier structures are being redesigned.
| Property | Test method | Measurement condition | Nominal value |
|---|---|---|---|
| Melt flow rate | ISO 1133-1:2022 | 190°C, 2.16 kg | 6 g/10 min |
| Density | ISO 1183-1:2019 | 23°C | 0.950 g/cm³ |
| Tensile strength at break | ISO 527-2 | Type 5A, 50 mm/min | 12 MPa |
| Elongation at break | ISO 527-2 | Type 5A, 50 mm/min | 800% |
| Shore A hardness | ISO 868 | 15 s indentation | 79 |
| Melting peak | ISO 11357-3:2018 | 10°C/min, second heating | 74°C |
| Vicat softening temperature | ISO 306/A50 | 50 N, 50°C/h | 47°C |
Values in the table are nominal manufacturer-published values and should be verified against lot-specific certificates of analysis. In injection moulding of EVA 1326 for flexible grips, seals, and cushioning components, the melt temperature is kept between 160°C and 210°C, with mould temperature from 20°C to 40°C. Screw back-pressure from 0.5 MPa to 1.0 MPa assists melt homogeneity, but excessive compression can raise melt temperature above 220°C and trigger degradation. Shrinkage is anisotropic and typically ranges from 1.5% to 2.5%; ejector design and draft angles above 1° are used to accommodate soft, low-modulus parts.
At -30°C, flexible compounds based on EVA 1326 retain impact toughness beyond that of plasticised PVC and high-density polyethylene, but the polyethylene segment glass transition near -35°C means that true elastomeric recovery below this temperature requires blending with metallocene plastomers. In footwear midsole foaming, EVA 1326 is compounded with azodicarbonamide blowing agent at 2% to 4% by mass, zinc oxide activator at 0.5% to 1.0%, and dicumyl peroxide crosslinking agent. Cure rheometry at 160°C to 180°C according to ISO 6502 determines peroxide dose and scorch time; scorch time below 120°C should exceed 20 min to permit safe extrusion. Closed-cell content above 85% in foamed parts is achievable only when gas pressure matches melt viscosity and mould cooling rate; published data for this specific configuration is limited where proprietary foaming cycles are involved.
Amine-based antioxidants and strongly acidic additives should not be compounded with EVA 1326 before peroxide cure. Amines consume peroxide radicals and reduce crosslink density, while acids catalyse vinyl acetate hydrolysis and lower thermal stability. For moisture-sensitive processing, pellet water content is maintained below 0.05% by mass; pre-drying at 60°C for 2 h to 4 h in a desiccant dryer is required when ambient relative humidity exceeds 60%. In halogen-free flame-retardant compounds for wire and cable, EVA 1326 is combined with aluminium trihydroxide or magnesium dihydroxide at 50% to 65% by mass to achieve limiting oxygen index values above 30% under ISO 4589-2. Tensile strength and elongation decrease as filler loading increases, which requires side-feeding on a co-rotating twin-screw extruder with L/D 28:1 to 40:1 to limit shear heating and acetic acid formation.
Regulatory declarations for EVA 1326 are governed by the specific homogeneous material composition and conversion conditions. Compliance with REACH Regulation (EC) No 1907/2006 requires confirmation that the polymer is registered and that no substance of very high concern exceeds the 0.1% w/w threshold in the supplied pellet. Under Directive 2011/65/EU, lead, mercury, cadmium, hexavalent chromium, PBB, and PBDE are below 0.1% by mass in homogeneous material according to supplier declaration. For food-contact applications, the resin may be evaluated under 21 CFR 177.1350 and, in the European Union, under Regulation (EU) No 10/2011; however, migration testing is formulation-dependent and requires grade-specific documentation. The material is not intended for medical implant use, continuous hot-water pressure pipe, or applications exceeding its oxidation induction temperature without additional stabilisation.
| Requirement | Reference | Typical status |
|---|---|---|
| EU REACH registration | Regulation (EC) No 1907/2006 | Substance is registered; article obligations apply to imports |
| EU RoHS restricted substances | Directive 2011/65/EU | Lead, mercury, cadmium, hexavalent chromium, PBB, PBDE below 0.1% by mass in homogeneous material by supplier declaration |
| Food contact status | 21 CFR 177.1350, EU 10/2011 | Grade-specific declaration required; migration testing is formulation-dependent |
| SVHC under REACH | Candidate List | No SVHC intentionally added; verification against 0.1% w/w threshold |
