| HS Code | 936450 |
| Product Name | HANWHA EVA 2040 |
| Material Type | Ethylene Vinyl Acetate (EVA) Copolymer |
| Vinyl Acetate Content | 20% |
| Melt Flow Index | 40 g/10 min (190°C, 2.16 kg) |
| Density | 0.94 g/cm³ |
| Melting Point | 88°C |
| Vicat Softening Temperature | 70°C |
| Tensile Strength | 15 MPa |
| Elongation At Break | 800% |
| Hardness | 95 Shore A |
As an accredited HANWHA EVA 2040 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | HANWHA EVA 2040 is supplied in 25 kg bags, packaged in polyethylene-lined woven bags for safe transport. |
| Container Loading (20′ FCL) | Load 20′ FCL with HANWHA EVA 2040 resin, using palletized bags, secure stowage, proper ventilation, and contamination prevention for safe transit. |
| Shipping | HANWHA EVA 2040 is a non-hazardous ethylene vinyl acetate copolymer resin, supplied in solid pellet form. Ship as packed cargo in 25 kg bags or jumbo bags, sealed in dry, ventilated containers. Protect from moisture, direct sunlight, and high temperatures during transit to prevent agglomeration or degradation. |
| Storage | Store HANWHA EVA 2040 in a cool, dry, well-ventilated area away from direct sunlight, heat, and ignition sources. Keep in original sealed packaging to prevent moisture contamination and physical damage. Avoid stacking pallets excessively high; maintain moderate temperatures. Use proper handling equipment to preserve material integrity. Shelf life is typically one year under recommended conditions. |
| Shelf Life | Store in a cool, dry place away from direct sunlight. Shelf life is typically two years from date of manufacture. |
Substitution of Hanwha EVA 2040, characterized by a vinyl acetate content of 20 wt% and a melt flow rate of 400 g/10 min determined at 190°C/2.16 kg to ISO 1133-1:2022, into a corrugated case-sealing hot melt typically positions the copolymer at 25–35 wt% alongside 35–45 wt% hydrogenated C9 tackifier, 15–25 wt% paraffin wax with a drop melting point of 60–70°C by ASTM D3954, and 0.5–1.0 wt% hindered phenolic antioxidant. The compound is melt-blended in a co-rotating twin-screw extruder with L/D 40:1 at barrel zone temperatures of 150–180°C and a die temperature of 160–190°C, then transferred to a 316L stainless steel hot-melt applicator tank maintained at 160–180°C with a nitrogen blanket. This grade’s high flow reduces torque load in the extruder, but the practical processing window narrows to approximately ±5°C around 170°C; below 155°C intermittent tailing occurs on corrugated medium, while above 190°C deacetylation liberates acetic acid and forms char on tank walls. Continuous slot-die application to regular slotted containers and wraparound trays at line speeds of 150–400 m/min is controlled by viscosity measured with a Brookfield Thermosel at 180°C according to ASTM D3236, with formulated systems typically falling between 800–1,200 mPa·s; adhesion to untreated kraft is evaluated by ASTM D1876 T-peel after conditioning at 23°C/50% RH for 24 h. Incidental food-contact use of the formulated adhesive must comply with 21 CFR 175.105, while European shipments require Regulation (EC) No 1935/2004 and REACH registration data. End-product types include die-cut case blanks, telescoping trays, and point-of-sale corrugated displays.
In perfect-binding lines cycling at 3,000–18,000 books/h, EVA 2040 is loaded at 30–40 wt% with 35–50 wt% rosin ester tackifier, 10–20 wt% microcrystalline wax, and 5–15 wt% calcium carbonate filler to control penetration into uncoated and matt-coated paper stocks. The melt is heated to 140–170°C in a pneumatically fed tank and applied by a twin-roller or nozzle wheel at 0.1–0.5 mm adhesive thickness; open time on coated paper measured by a hot-tack test fixture is 5–15 s, while set time under nip pressure is 1–3 s. The high melt flow of the base polymer permits lower application temperature than low-MI EVA, which reduces thermal damage to thermoreactive cover coatings, but cohesive strength becomes the critical failure mode; page-pull and flex-cover adhesion tests are conducted after 24 h conditioning at 23°C/50% RH. Melt viscosity is measured with a Brookfield Thermosel at 150°C according to ASTM D3236, and raw-grade melt flow rate is verified by ISO 1133-1:2022. Adhesion to coated paper is evaluated by ASTM D1876 T-peel, while heat resistance is screened by ASTM D4498 heat-fail temperature. Compliance for bookbinding adhesives destined for children’s publications includes REACH, RoHS 2011/65/EU, and EN 71-3 migration limits when printed paperboard is included in toy articles; commercial catalog and magazine binding is evaluated under ASTM D1876 and ASTM D4498 for shelf-stable distribution. End-product types include perfect-bound softcover books, annual catalogs, trade magazines, and multi-section telephone directories.
Within wax-based coating operations, EVA 2040 is dissolved into paraffin wax and microcrystalline wax blends at 5–20 wt% because the upper concentration boundary is fixed by curtain-coater fluid mechanics: at 150°C, a coherent falling curtain on a high-speed corrugated web generally requires viscosity below 500–800 mPa·s by ASTM D3236. The wax phase is first melted at 120–140°C, and EVA pellets are introduced under low-shear agitation of 200–600 rpm; after 30–60 min the homogeneous blend is pumped through a slot die or curtain coater at 130–150°C onto kraft linerboard. Addition of EVA 2040 at 5–20 wt% raises the drop melting point and improves scuff resistance and cold flex, but loadings above 25 wt% produce a viscosity climb that destabilizes the curtain, leading to edge tear and transverse thickness variation. Food-contact compliance is anchored to 21 CFR 176.170 and 21 CFR 176.180 for paper and paperboard in contact with aqueous and fatty foods when the coated board is used as a barrier; the wax blend itself is characterized by ASTM D3954 drop melting point, ASTM D1321 needle penetration, and ASTM D938 congealing point. Downstream production converts the coated board into waxed corrugated produce boxes, frozen seafood containers, and poultry packing cartons where water resistance and low-temperature toughness are required. Residual acetic acid generated by thermal history above 180°C must be minimized because acid catalyzes wax oxidation and increases extractable organic content.
Bitumen modification with ethylene-vinyl acetate copolymers is carried out in a wet process using a high-shear rotor-stator mixer at 170–180°C for 60–180 min. EVA 2040 is added at 3–7 wt% based on bitumen mass; the high melt flow rate allows dispersion into penetration-grade bitumen without the excessive viscosity rise observed with lower-MI EVA grades. Modified binder is discharged into a stirred storage tank at 160–180°C where phase separation is monitored periodically by softening point difference between the top and bottom thirds of the tank after 48 h settling. Binder consistency is characterized by needle penetration at 25°C per ASTM D5, ring-and-ball softening point per ASTM D36, and polymer dispersion by fluorescence microscopy on 0.2 mm film samples. For polymer-modified asphalt used in European waterproofing membranes, EN 13707 and EN 13969 apply to the finished membrane products, while North American pavement binders may be evaluated under AASHTO M320 and ASTM D5976. The terminal product range includes torch-applied waterproofing membranes, mastic asphalt floor compounds, and low-temperature road repair binders; published data for EVA 2040 in high-traffic pavement-grade PMB is limited compared with lower-MI EVA grades, so suitability for rutting resistance at 60°C must be established by creep-recovery testing before use in roadway surface courses. Processing boundaries include a maximum melt temperature of 200°C and avoidance of chlorinated paraffin co-additives that accelerate deacetylation.
For additive concentrates requiring a low-melt-viscosity carrier, EVA 2040 is incorporated at 60–80 wt% of the masterbatch formulation, with final letdown ratios of 2–5 wt% in polyethylene or EVA-based finished compounds. The carrier is melt-mixed with organic pigments, UV stabilizers, slip agents, or processing aids in a co-rotating twin-screw extruder with L/D 44:1, screw speed 300–600 rpm, and barrel temperatures 120–170°C. Pre-drying at 60–70°C for 2–4 h is required when the resin has been stored at relative humidity above 60% to prevent hydrolytic degradation streaking; pelletizing is performed by an underwater die-face cutter to avoid agglomeration caused by the soft, high-VA carrier. The resulting masterbatch is let down on blown-film or cast-film lines at 2–5 wt%; because vinyl acetate comonomer can migrate to the film surface and alter coefficient of friction, thin-gauge polyolefin film should be screened by ASTM D1894 after 72 h aging at 23°C. Regulatory control for the masterbatch is based on REACH registration, while final food-contact articles produced with EVA 2040 carrier must satisfy Regulation (EU) No 10/2011 overall migration limits and 21 CFR 177.1350 for EVA copolymers if the finished article is a direct food-contact material. Terminal product types include colored polyethylene stretch films, injection moulded closures with low letdown ratios, and technical compounds for cable jacketing where the carrier does not exceed 3 wt% of the final formulation. A limitation arises in high-clarity polypropylene film: even small carrier additions can lower surface tension below 38 mN/m after corona treatment, so EVA 2040 is generally not selected for biaxially oriented PP film masterbatches.
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Hanwha EVA 2040 is an ethylene-vinyl acetate copolymer supplied under the grade designator EVA 2040. Nominal vinyl acetate content is 20 wt% and melt flow index is 40 g/10 min when determined at 190 °C under 2.16 kg load in accordance with ASTM D1238. Density is reported as 0.94 g/cm³ using ASTM D1505. Vinyl acetate content is quantified by Fourier transform infrared spectroscopy according to ASTM D5594 or equivalent ISO 8985. The copolymer is produced by high-pressure ethylene-vinyl acetate polymerization; published data for the specific reactor technology used for this grade is limited. The product is supplied as translucent pellets designed for gravimetric feeding, bulk conveying, and continuous compounding. It is applied primarily as a base polymer in hot melt adhesive compounding, wax modification, and polymer blending rather than as a standalone structural film resin.
| Property | Test method | Nominal value | Unit |
|---|---|---|---|
| Vinyl acetate content | ASTM D5594 / ISO 8985 | 20 | wt% |
| Melt flow index | ASTM D1238 / ISO 1133-1:2022 | 40 | g/10 min |
| Density | ASTM D1505 / ISO 1183-1:2019 | 0.94 | g/cm³ |
| Physical form | Visual inspection | pellets | — |
The principal boundary condition is thermal degradation of vinyl acetate units, which release acetic acid through deacetylation. In continuous extrusion on co-rotating twin-screw extruders with an L/D ratio of 40:1 or higher, the melt temperature measured at the die is maintained below 190 °C when residence time exceeds 3 min. Barrel set points are typically ramped from 120 °C in the feed zone to 180 °C in the metering zone, with the vacuum vent at approximately 60% of the screw length used to remove moisture and trace acetic acid. Corrosion-resistant alloys or nitrided barrel surfaces are specified because liberated acid attacks carbon steel. Pre-drying in a desiccant hopper dryer at 60 °C to 70 °C for 2 h to 4 h is recommended when ambient relative humidity exceeds 60% or when pellet surface moisture is visible. Vent plugging and screw deposit formation increase when the die temperature exceeds 200 °C, particularly in stagnant melt zones. In injection molding, clamp force demand is not unusually high because the 40 g/10 min melt flow index keeps melt pressure moderate; cold-runner mold temperatures between 20 °C and 40 °C are generally adequate. Hot-runner systems require externally heated manifolds with no dead spots to limit local degradation.
Thermal analysis by differential scanning calorimetry under ASTM D3418 at a heating rate of 10 °C/min shows a broad melting endotherm associated with the polyethylene crystalline sequence distribution. The crystallinity is lower than that of low-VA EVA because acetate side groups disrupt chain packing. Consequently, the grade exhibits lower modulus, greater low-temperature flexibility, and higher gas permeability than EVA grades with vinyl acetate contents below 10 wt%. The glass transition temperature is below -20 °C, though published data for this specific grade configuration is limited. These thermal characteristics guide cooling section selection in cast film and extrusion coating operations. Hanwha EVA 2040 is not normally used as the primary resin in monolayer blown film because its low melt strength limits bubble stability. Instead, it is blended at 10 wt% to 30 wt% with LDPE or LLDPE to improve adhesion, seal initiation, and elongation. Blending requires a single-screw extruder with a barrier screw and a mixing tip, with melt temperature controlled at 170 °C to 185 °C to avoid phase separation.
For filled compounds, Hanwha EVA 2040 can be loaded with calcium carbonate, talc, or precipitated silica at typical levels of 5 wt% to 30 wt% depending on end-product requirements. Co-rotating twin-screw extruders with screw length-to-diameter ratios of 40:1 to 52:1 are preferred for masterbatch production because distributive mixing elements improve dispersion of fillers into the low-viscosity melt. In production-scale compounding, screw speeds of 300 rpm to 600 rpm are used, and specific mechanical energy input is monitored to prevent melt temperature from exceeding the degradation threshold. A vacuum vent at approximately 60% of the screw length removes water and acetic acid; vent flooding has been observed on manufacturing lines when filler introduction raises melt viscosity enough to reduce forward conveying capacity. The grade should not be compounded with strong alkaline additives or high-load amine-based stabilizers because such additives accelerate ester hydrolysis and increase plate-out on downstream calendering rolls. For long production runs, purging with a low-MFI polyethylene or commercial purge compound after shutdown limits carbonized residue in the die. Analytical control of compounded product includes ash content measurement per ISO 3451-1 and residual moisture by Karl Fischer titration.
In hot melt adhesive compounding, Hanwha EVA 2040 is combined with rosin ester or hydrogenated hydrocarbon tackifiers and paraffin wax or Fischer-Tropsch wax. The 20 wt% vinyl acetate content introduces carbonyl polarity that improves wetting on polar substrates such as coated paperboard, polyvinyl chloride, aluminum, and polyamide. The 40 g/10 min melt flow index permits application through gear-pump slot die coaters and fiberized spray nozzles at melt temperatures of 150 °C to 175 °C. Formulators adjust wax content to control open time and set time; higher wax fractions reduce open time but also reduce low-temperature adhesion. Published data for this specific grade in full adhesive formulations is limited, so laboratory validation using loop tack per ASTM D6195 and shear adhesion failure temperature per ASTM D4498 is required for each substrate and tackifier combination. Heated hoses and applicator heads should maintain temperature control because localized overheating above 190 °C can produce char and gel particles that plug filters and nozzle tips.
Substitution of a lower-VA grade with Hanwha EVA 2040 increases the concentration of polar acetate groups at the interface, which typically raises peel adhesion to aluminum foil and polyamide substrates but reduces resistance to paraffinic oils. The melt flow index of 40 g/10 min is significantly higher than that of standard film or sealant grades in the 2 g/10 min to 12 g/10 min range, so converters must lower barrel temperatures or reduce screw speed to prevent overflight leakage in single-screw extruders. In hot melt applications, the material can be processed at temperatures that are 15 °C to 25 °C lower than those required for a 6 g/10 min EVA with the same vinyl acetate content. The lower melt strength also reduces draw-down stability in extrusion coating, so the air gap should be kept below 150 mm and chill roll temperature between 15 °C and 25 °C. Compared with high-VA EVA grades at 28 wt% to 33 wt% vinyl acetate, Hanwha EVA 2040 has a higher cloud point in wax blends and may require additional tackifier to maintain low-temperature adhesion. If the end use requires food-contact compliance, a separate regulatory grade should be specified; Hanwha EVA 2040 is not assumed to satisfy 21 CFR 175.105 without explicit supplier certification.
Storage conditions influence processing performance. Bulk silo storage should be purged with dry air and maintained below 40 °C to prevent pellet blocking and oxidative yellowing. Inventory rotation should follow first-in-first-out practice because extended storage above 25 °C in humid conditions can raise surface moisture above 0.1 wt%. Handling follows standard practice for polyolefin pellets; dust explosion risk is controlled by grounding, dust collection per NFPA 654, and elimination of ignition sources. During processing, local exhaust ventilation is required to capture acetic acid vapors. The product should not be incinerated in uncontrolled municipal waste streams; disposal follows local regulations. No food-contact or medical use is implied without explicit regulatory certification.
