| HS Code | 555892 |
| Product Name | HANWHA EVA 1214 |
| Vinyl Acetate Content | 12 wt% |
| Melt Flow Index | 14 g/10 min (190°C, 2.16 kg) |
| Density | 0.936 g/cm³ |
| Melting Point | 86°C |
| Vicat Softening Point | 63°C |
| Shore Hardness | 40 Shore D |
| Tensile Strength At Break | 24 MPa |
| Elongation At Break | 800% |
| Glass Transition Temperature | -80°C |
| Brittleness Temperature | -70°C |
| Crystallinity | approx. 35% |
As an accredited HANWHA EVA 1214 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | HANWHA EVA 1214 is supplied in 25 kg polyethylene-lined kraft paper bags, ensuring safe storage and handling. |
| Container Loading (20′ FCL) | 20′ FCL: Load 25-kg bags of HANWHA EVA 1214 on pallets, max 22 pallets, ensuring secure stacking and ventilation. |
| Shipping | HANWHA EVA 1214 is shipped as ethylene-vinyl acetate copolymer in solid pellet form. It is non-hazardous for transport, not regulated as dangerous goods, and typically packed in moisture-resistant polyethylene-lined bags on pallets. Keep containers sealed and store in a cool, dry area to prevent moisture absorption and product degradation. |
| Storage | Store Hanwha EVA 1214 in a cool, dry, well-ventilated area, away from direct sunlight, heat sources, and ignition hazards. Keep containers tightly sealed to prevent moisture absorption and contamination. Maintain moderate temperatures, avoid excessive stacking, and protect from physical damage. Reseal partial bags promptly to preserve resin quality and ensure safe handling. |
| Shelf Life | Shelf life: 2 years from manufacture date when stored in original packaging in a cool, dry place. |
For injection moulded crosslinked ethylene-vinyl acetate foam midsoles and sock liners, Hanwha EVA 1214 is employed as a high-flow, low-VA crystalline modifier within a higher-VA matrix. The grade is specified at 12 wt% vinyl acetate and 14 g/10 min melt flow rate under ISO 1133-1:2022 at 190°C/2.16 kg. Compound development for midsole foam typically blends EVA 1214 at 10–25 wt% with an 18–22 wt% VA EVA to bring cured Shore A hardness into the 55–65 range after expansion. Azodicarbonamide is added at 2.0–3.5 phr, dicumyl peroxide at 0.8–1.0 phr, zinc oxide at 0.5–1.0 phr, and zinc stearate at 0.5–1.0 phr; the ZnO-modified blowing agent release band lies between 180°C and 205°C, while the peroxide half-life at 170°C is approximately 1 min. Because the 12 wt% VA segment preserves a higher crystalline fraction than high-VA foaming grades, closed-mould expansion pressure is higher at equal density. Production injection foam lines running 180–200 t clamp force machines with plate temperatures of 165–175°C require venting overlays and staged ejection to control post-demould shrinkage. Torque rheometry at 140°C and 30 rpm is used to track scorch before gas release; any inflection before the blowing-agent pressure rise indicates premature crosslinking from thermal history. Melt temperature must not exceed 220°C in the screw barrel because vinyl acetate side-group elimination begins to release acetic acid; corrosion-resistant tooling and vented barrels are specified. Foam density is verified under ISO 845:2009 and tensile strength of the expanded material under ISO 1798:2008 on skived specimens.
Hanwha EVA 1214 is compounded into hot melt adhesives for edge-banding and profile wrapping where high melt viscosity is required to limit penetration into porous substrates. The resin is processed with hydrogenated hydrocarbon tackifier, paraffin wax, and antioxidant in vertical mixers under nitrogen blanketing at 160–180°C. A starting-point formulation containing 30–35 wt% polymer must be characterised on a Brookfield viscometer under ASTM D3236; published viscometric data for this specific configuration are limited, and production batches are adjusted to a target application temperature of 180°C. The grade's 14 g/10 min melt index under ISO 1133-1:2022 indicates a higher molecular weight than spray-grade EVA, restricting application to slot-nozzle and roller-coating equipment. Open time and set time are controlled by recrystallisation of the low-VA crystalline fraction; this recrystallisation is slower than high-VA EVA, which extends open time but also raises the risk of blocking in stacked coated workpieces. Thermal stability in the mixer is monitored by free acetic acid generation. Manufacturing experience with 12 wt% VA EVA indicates that unstabilised material held at 180°C for more than 4–6 h can drift in viscosity by more than 10%. Addition of 0.2–0.5 phr hindered phenolic antioxidant is mandatory for continuous operation, and all hold tanks must be blanketed with dry nitrogen to prevent hydrolysis.
Hanwha EVA 1214 functions as a polar carrier resin for white and black masterbatches at letdown ratios of 3–5% in polyolefin film, moulding, and extrusion. The 12 wt% vinyl acetate content improves wetting of carbon black primary particles and reduces filter pressure value compared with LDPE carriers during screen-pack filtration. Production-scale co-rotating twin-screw lines with 40:1 L/D are operated with a barrel profile from 120°C at the feed zone to 180°C at the die. TiO₂ loadings of 60–70 wt% require side-feeder addition after polymer melting to limit torque and residence time, and screw speed is trimmed to keep measured melt temperature below 210°C. The same carrier is used for slip and antiblock additive concentrates, in which the polar vinyl acetate group lowers interfacial tension with amide and silica additives; final dilution in the converter's matrix is typically below 1 wt%. Filtration performance is checked on a single-screw extruder fitted with a 14 µm screen pack; the pressure trend rather than an absolute threshold is used for lot release because pigment particle size distribution and dispersant choice shift the response. Incompatibility with low-VA LDPE-rich formulations is not observed at conventional letdown, but residual acetic acid generation during compounding above 210°C requires vented barrels and corrosion-resistant screw elements.
In continuous profile extrusion for appliance gaskets and flexible tubing, Hanwha EVA 1214 is processed on single-screw extruders with 24:1 L/D and compression ratio 2.5:1. The die melt temperature is held between 150°C and 170°C; pre-drying is required at 60–70°C for 2–3 h when storage humidity exceeds 60% RH, because surface moisture hydrolyses vinyl acetate groups and produces surface roughness and microvoids. The low-VA structure improves environmental stress crack resistance relative to higher-VA EVA, but melt strength remains lower than LDPE. Die swell is observed to be higher, so the calibrator free length is extended by 10–15% when switching from LDPE. Tensile properties are determined under ISO 527-2:2012 and hardness under ISO 868:2003 on extruded strips. Colour concentrates based on EVA 1214 are added at 2–3%; if an incompatible amide-based slip agent is introduced, migration can cause surface bloom. Thermal degradation in the profile die occurs above 220°C, and purging with low-MI LDPE is required before shutdown to prevent carbonised residue in the die lips.
For closed-cell expanded sheet produced by compression moulding for sports mats and anti-fatigue flooring, Hanwha EVA 1214 is blended at 15–30 wt% into a 20–26 wt% VA EVA matrix. The lower VA fraction raises compression set resistance after cure; compression set is measured under ISO 1856:2018 at 50% deflection and 23°C. At 40°C the compression set performance deteriorates if gel content is below 60%, so peroxide loading is calculated from active oxygen content and adjusted for the acid generated by residual VA hydrolysation. Press cure is conducted at 165–175°C for 8–12 min depending on stack thickness; blowing gas expands the sheet to density 0.15–0.25 g/cm³, verified under ISO 845:2009. The stiffness contribution of EVA 1214 requires staged slab cooling: demoulding at 80–90°C can induce curl and cell collapse. Production lines use vacuum cooling sleds and post-cure annealing at 60°C for 4 h to stabilise shrinkage. The low-VA fraction also reduces low-temperature flexibility; sheet intended for cold-storage environments below 0°C should not rely on EVA 1214-rich formulations without separate impact modification.
Hanwha EVA 1214 is used as an extrusion coating resin for board and aluminium foil where the heat seal layer must retain stiffness at 40°C and reduce sealing temperature relative to LDPE. The 14 g/10 min melt flow rate supports draw-down to coating weights of 15–25 µm on lines running 250–350 m/min; melt temperature at the die is limited to 230°C because vinyl acetate degradation accelerates beyond this point. Seal initiation temperature is characterised under ASTM F2029 and seal strength under ASTM F88/F88M as a function of dwell time and jaw pressure. Purging with LDPE is required before shutdown to avoid acetic acid attack on the die and chill roll. For food-contact applications, the finished article must be confirmed under FDA 21 CFR 177.1350; the resin supplier's compliance statement is not sufficient without migration testing under the intended temperature and simulant. The low VA content provides a hot tack window narrower than 18 wt% VA EVA sealants, so line speed and seal jaw dwell must be matched to avoid leaker formation in form-fill-seal operations.
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HANWHA EVA 1214 is an ethylene-vinyl acetate random copolymer pellet grade with a nominal vinyl acetate comonomer content of 12 wt%. Melt mass-flow rate, measured at 190 °C with a 2.16 kg load according to ISO 1133-1, is 4.0 g/10 min; nominal density is 0.934 g/cm³ at 23 °C per ISO 1183-1. These values position the material between low-density polyethylene and flexible EVA grades with higher vinyl acetate content. Relative to LDPE, the 12 wt% comonomer reduces crystallinity, increases environmental stress crack resistance, lowers seal initiation temperature, and improves ink adhesion after oxidation; the crystallinity difference is measurable by ISO 11357-3. Relative to HANWHA EVA 1528 with 15 wt% vinyl acetate and 28 g/10 min melt index, EVA 1214 delivers higher melt strength, higher stiffness, and lower surface tack. The manufacturer datasheet states that typical values are not specification limits; lot-specific certificates of analysis control release limits.
| Property | Test method | Nominal value |
|---|---|---|
| Vinyl acetate content | Manufacturer internal method | 12 wt% |
| Melt mass-flow rate | ISO 1133-1 / ASTM D1238-20 | 4.0 g/10 min |
| Density | ISO 1183-1 / ASTM D792-20 | 0.934 g/cm³ |
Extrusion melt temperature is typically maintained at 180–220 °C. At feed-zone temperatures below 160 °C, screw torque rises sharply because the 4.0 g/10 min melt-index grade has not yet established a sufficient melt film on the barrel wall. At sustained melt temperatures above 230 °C, thermally induced deacetylation releases acetic acid, producing colour shift, gel formation, and possible corrosion of downstream metal components. Hold-up time at the upper temperature boundary should remain below 15 min. For single-screw extrusion, equipment with 24:1–30:1 L/D and a barrier screw with a Maddock mixing section is common; barrel temperature profiles from hopper to die are frequently set as 150 °C, 180 °C, 190 °C, and 190 °C. Actual melt temperature should be verified by needle pyrometer, not inferred from barrel settings alone.
EVA 1214 is more shear-sensitive than LDPE but less so than high-melt-index EVA. The viscosity curve at 190 °C should be used for screw design. At shear rates typical for blown film dies of 100–500 s⁻¹, the grade retains sufficient melt tension to allow a blow-up ratio of 2.0–2.5 without excessive bubble sag. Shear stress at the die lip is reduced by die gaps of 1.5–2.0 mm. Higher die gaps increase gauge variation, while lower die gaps raise die pressure and melt fracture risk. On a 30:1 L/D single-screw extruder with a barrier screw and Maddock mixer, field failure modes include screw packing when the feed section exceeds 160 °C and bubble instability when the frost line height exceeds 5 die diameters.
Across blown film lines with die diameters from 50 mm to 300 mm, frost line height is commonly set at 3–4 die diameters to balance crystallinity and optics. In comparison with 18 wt% vinyl acetate EVA, EVA 1214 shows reduced tack, lower blocking on the winder at core-adjacent web temperatures of 35–40 °C, and a narrower heat-seal temperature window as measured by ASTM F2029. Corona treatment to 38–42 mN/m is usually required before lamination or printing because the as-extruded surface free energy is below that of polyamide and PET; wetting tension is checked by ASTM D5946. On production-scale lines, failure modes include bubble instability when the collapsing frame has misaligned hip rollers and fold-over creases when winding tension is excessive. Winding tension should be maintained at 0.1–0.2 N/mm per web width to prevent telescoping; for films below 30 µm, lower tension is preferred.
Foam sheet conversion of EVA 1214 generally uses a chemical blowing agent such as azodicarbonamide at loadings from 0.5 phr to 1.0 phr. Melt temperatures are kept near 170–190 °C to initiate gas evolution while avoiding premature decomposition; published data for this specific configuration is limited, so blowing agent decomposition onset should be determined by thermogravimetric analysis under ISO 11358-1. Crosslinked foam processors add organic peroxide at 0.4–0.8 phr; the cure half-time must be matched to extruder residence time because premature scorch produces hard gel particles on the screen pack and die lip.
Injection moulding converts EVA 1214 with melt temperatures of 180–200 °C and mould surface temperatures of 20–40 °C. The moderate melt index results in longer fill times than high-flow EVA grades. For a 2.0 mm wall-thickness part with a flow length of 150 mm, published data for this specific configuration is limited, and mold flow simulation using grade-specific viscosity data is required. Shot-to-shot variation is reduced when the screw cushion is maintained at 3–5 mm and the nozzle is kept at 190 °C. Shrinkage measurement in accordance with ISO 294-3 should be used for tool compensation; typical shrinkage is lower than LDPE in the flow direction but higher than high-density polyethylene.
Extrusion lamination and coating are possible but EVA 1214 is less common than high-melt-index EVA grades because the 4.0 g/10 min melt index requires higher melt temperatures and produces higher neck-in. If used, line speed is limited relative to HANWHA EVA 1528 because curtain draw resonance develops earlier. A coat weight of 15–25 g/m² should be evaluated on the target substrate line. Corona treatment to the substrate must be at least 40 mN/m for adequate adhesion. Published data for this specific configuration is limited; process capability should be verified by inline adhesion peel testing rather than laboratory coating trials alone.
Substituting EVA 1214 for LDPE in surface protection film lowers the heat seal temperature, improves puncture resistance in drop-dart testing by ASTM D1709-16a or ISO 7765-1, and increases stress crack resistance under ASTM D1693-15; the trade-off is lower modulus. When EVA 1214 replaces EVA 1528, the lower vinyl acetate content of 12 wt% increases crystallinity, raises Vicat softening point, and reduces low-temperature flexibility. This product is therefore selected when higher rigidity, higher melt strength, and lower surface tack are more important than maximum impact tolerance or low-temperature seal initiation.
| Characteristic | HANWHA EVA 1214 | HANWHA EVA 1528 | Test method or equipment |
|---|---|---|---|
| Nominal vinyl acetate content | 12 wt% | 15 wt% | Manufacturer internal method |
| Melt mass-flow rate | 4.0 g/10 min | 28 g/10 min | ISO 1133-1 |
| Nominal density | 0.934 g/cm³ | 0.938 g/cm³ | ISO 1183-1 |
| Relative melt strength | Higher | Lower | Capillary rheometer with Rheotens melt tension attachment |
| Relative seal initiation | Higher | Lower | ASTM F2029 |
Compliance for food-contact applications is not implied by base resin properties. Converters must verify that the finished packaging meets FDA 21 CFR 177.1350 for ethylene-vinyl acetate copolymers and EU Regulation (EU) No 10/2011, including a vinyl acetate monomer specific migration limit of 12 mg/kg. RoHS Directive 2011/65/EU and Commission Delegated Directive (EU) 2015/863 restrictions at homogeneous material level should be confirmed through the supplier’s SDS and compliance declaration. REACH obligations under Regulation (EC) No 1907/2006 apply to the imported resin and to any added masterbatches.
Pre-drying is not mandatory under normal indoor storage, but resin stored at relative humidity above 60% should be dried at 60–70 °C for 2–4 h in a desiccant dryer before film extrusion to prevent hydrolysis-related splay. Avoid melt residence times above 15 min at temperatures exceeding 220 °C. Direct melt contact with copper-containing alloys and prolonged exposure to acidic purge residues increase corrosion risk because acetic acid generated by thermal degradation is corrosive; neutralization additives may be required if regrind contains acid-functional masterbatches.
