| HS Code | 545862 |
| Product Name | HANWHA EVA 1533 |
| Chemical Family | Ethylene Vinyl Acetate (EVA) Copolymer |
| Vinyl Acetate Content | 15% |
| Melt Flow Index | 3.3 g/10min (190°C, 2.16 kg) |
| Density | 0.940 g/cm³ |
| Melting Point | 87°C |
| Vicat Softening Point | 68°C |
| Tensile Strength At Break | 19 MPa |
| Elongation At Break | 800% |
| Hardness | 90 Shore A |
| Flexural Modulus | 70 MPa |
| Brittleness Temperature | -70°C |
As an accredited HANWHA EVA 1533 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | HANWHA EVA 1533 is supplied in 25 kg polyethylene-lined kraft bags, palletized and stretch-wrapped for safe transport. |
| Container Loading (20′ FCL) | 20′ FCL container loaded with HANWHA EVA 1533, securely packed in bags, optimized quantity for safe transport. |
| Shipping | HANWHA EVA 1533 is a thermoplastic resin supplied as solid pellets. It is non-hazardous and not regulated as dangerous goods for transport. Ship in sealed polyethylene bags or bulk containers, protected from moisture, direct sunlight, and excessive heat. Standard dry van or container shipment is suitable, with no special temperature control required. |
| Storage | Store HANWHA EVA 1533 in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and open flames. Keep containers tightly sealed to prevent moisture absorption and contamination. Avoid contact with strong oxidizers. Maintain moderate ambient temperatures and store in original packaging until use. Follow manufacturer’s safety guidelines. |
| Shelf Life | Shelf life: 2 years from date of manufacture when stored in original, unopened packaging in a cool, dry place. |
Compression-moulded crosslinked foam based on HANWHA EVA 1533 is defined by the overlap between azodicarbonamide gas yield and dicumyl peroxide decomposition. The grade is specified with a nominal vinyl acetate content of 15 wt% and a melt flow rate of 3.3 g/10 min at 190 °C/2.16 kg under ISO 1133-1:2022. The lower comonomer content compared with EVA 28 increases crystallinity and melt strength during free expansion. It also narrows the temperature interval between additive dispersion and premature crosslinking. A representative boundary condition is 100 phr EVA 1533 combined with 2.5–3.5 phr azodicarbonamide, 0.8–1.1 phr dicumyl peroxide, 1.0–1.5 phr zinc oxide, and 0.4–0.8 phr stearic acid. Calcium carbonate at 5–15 phr is introduced when cell size and hardness are adjusted for technical gaskets rather than soft footwear midsole stock.
Mixing is performed in an internal mixer with a drop temperature limited to 110 ± 5 °C. A two-roll mill at 90–100 °C completes additive dispersion before the sheet is compression-moulded at 170–180 °C under 15–20 MPa for 8–12 min. Peroxide decomposition is exothermic. A mould-cavity overshoot above 5 °C increases gel fraction before full gas expansion, producing closed-cell collapse or surface blistering. Amine-based antioxidants are excluded from this formulation because they scavenge peroxide free radicals and depress gel fraction measured under ASTM D2765-16. Final foam is tested for apparent density by ISO 845, tensile strength and elongation by ISO 1798, tear strength by ISO 34-1, compression set by ASTM D395 Method B, and rebound resilience by ISO 8307.
Finished components include compression-moulded midsoles, flip-flop sole plates, anti-fatigue mat tiles, marine seating pads, and expansion joint filler strips. Coloured foam supplied to the European Union is evaluated against RoHS 2011/65/EU and REACH 1907/2006 Annex XVII; plasticized variants must be checked for phthalate restrictions under REACH Annex XVII entry 51. Processing above 230 °C releases acetic acid from the vinyl acetate group. Vented mould cavities or degassing stations are recommended when moulding sections thicker than 20 mm.
Halogen-free flame-retardant cable jackets based on HANWHA EVA 1533 use aluminium trihydrate as the primary endothermic filler. A representative formulation boundary is 100 phr EVA 1533, 120–180 phr precipitated ATH, 10–30 phr magnesium dihydroxide, 10–15 phr zinc borate, 0.5–1.2 phr vinyl silane coupling agent, 0.5–1.0 phr hindered phenolic antioxidant, and 1–2 phr polyethylene-wax processing aid. The melt flow rate of 3.3 g/10 min is relatively low for high filler loading. On a 90 mm single-screw jacketing line, melt fracture appears at the die lip when wall shear stress exceeds the compound melt strength because filler networking increases viscosity at low shear rates.
Compounding is performed on a corotating twin-screw extruder with 44:1 L/D and atmospheric plus vacuum venting. Barrel temperatures are controlled from 120 °C at the feed zone to 155 °C at the die. A melt temperature above 170 °C drives water release from ATH, producing surface porosity and rough jacket walls. ATH and EVA 1533 must be pre-dried to below 300 ppm moisture before mixing. Open resin bags stored at relative humidity above 60 % require drying at 60–65 °C for 4–6 h. The compound is pelletized through an underwater die face with water temperature below 40 °C, then dried to 500 ppm or less before wire extrusion.
| Property | Test method | Typical control window |
|---|---|---|
| Flame spread | IEC 60332-1-2 | char height ≤ 425 mm |
| Smoke density | IEC 61034-2 | light transmittance ≥ 60 % |
| Halogen acid gas | IEC 60754-1 | pH ≥ 4.3; conductivity ≤ 10 µS/mm |
| Oxygen index | ISO 4589-2 | ≥ 35 % O2 |
| Tensile strength before ageing | ISO 527-2 | ≥ 10 MPa |
| Elongation at break before ageing | ISO 527-2 | ≥ 150 % |
The jacketing compound is applied to building riser cables, transit rail cables, and control cables where low smoke and halogen acid evolution are specified. Melt fracture limits output. Reducing ATH to 120 phr or adding 1 phr processing aid is the standard corrective action. Published data for the exact EVA 1533 grade at maximum ATH loading is limited; line-specific screen pack configuration and die land length must be verified before production.
In hot-melt adhesive compounding, HANWHA EVA 1533 is charged at 30–40 wt% into a 200 L sigma-blade mixer with thermal oil heating, together with 30–40 wt% of a hydrogenated C5 or C9 tackifier and 20–30 wt% paraffin or microcrystalline wax. A hindered phenolic antioxidant at 0.5–1.0 wt% is included. Mixing proceeds at 160–180 °C under a nitrogen blanket for 45–60 min. The final adhesive is applied at 170–190 °C through slot-die or multi-roll coaters. For bookbinding spine adhesion, open time is controlled between 10 s and 20 s, while set time is shortened to 3–8 s by increasing wax content. Viscosity is measured by ASTM D3236 at 180 °C, heat resistance by ASTM D4498, and T-peel strength by ASTM D1876 on kraft to clay-coated board. The EVA content falls under the ethylene-vinyl acetate copolymer provisions of 21 CFR 177.1350. Indirect food packaging adhesives require formulation with compliant tackifiers and waxes under 21 CFR 175.105. Terminal products include case and carton sealing, bookbinding spine glue, paperboard tray lamination, and pressure-sensitive label topcoat. Thermal residence above 4 h at 190 °C increases the risk of vinyl acetate degradation and darkening; batch size and discharge frequency must be matched to the mixing vessel.
Colour masterbatch production using HANWHA EVA 1533 as carrier resin exploits the polar vinyl acetate group for pigment wetting. A typical formulation is 30–60 wt% EVA 1533, 30–50 wt% phthalocyanine blue or carbon black, 5–10 wt% polyethylene wax, and 0.5–1.0 wt% calcium stearate. The compound is prepared on a corotating twin-screw extruder with 40:1 L/D and side feeding at barrel five. Melt temperature is maintained at 170–200 °C. The melt is filtered through a screen pack of 100/200/100 mesh. Filter pressure value is determined according to EN 13900-5 and must be confirmed on a line-specific basis because published data for the exact FPV shift with EVA 1533 at equal pigment loading is limited. The colour concentrate is let down at 2–4 wt% in LLDPE or LDPE film and injection-moulded crates. Dispersion is evaluated by ISO 23900 thin-film count or optical microscopy. Terminal applications include flexible PE film, blow-moulded bottles, and injection-moulded caps. Die plate temperature must remain below 210 °C; at 230 °C acetic acid formation is sufficient to corrode unplated steel tooling and reduce pigment colour strength during prolonged residence. Pigment selection must comply with RoHS 2011/65/EU and REACH 1907/2006.
Continuous sheet production differs from compression moulding because the compound must be pelletized before being extruded into a calender nip. HANWHA EVA 1533 is mixed with 2.0–3.0 phr azodicarbonamide, 0.8–1.0 phr dicumyl peroxide, 10–30 phr calcium carbonate, 1.0–1.5 phr zinc oxide, and 0.4–0.6 phr stearic acid. Compounding is performed in a twin-screw extruder at 110–130 °C melt temperature, pelletized, and then fed to a single-screw extruder discharging into a four-roll inverted-L calender with roll temperatures of 80–100 °C. The uncrosslinked sheet is laid onto release paper and passed through a hot-air oven at 180–200 °C for 4–8 min. Expansion ratio is controlled between 1.5:1 and 2.5:1 by calender gap and oven temperature. Foam sheet is tested under ASTM D1056-14 classification and ISO 1798 tensile properties. The final sheet is slit and thermoformed into automotive insulation pads, anti-vibration barrier layers, HVAC gasketing, and floor underlay. Batch-to-batch variation in blowing agent particle size alters cell nucleation density. Azodicarbonamide particle size distribution must be maintained within ± 1 µm of the agreed mean. Flame-spread requirements for automotive interior parts are verified under FMVSS 302 where specified by the buyer.
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HANWHA EVA 1533 is a high-pressure free-radical ethylene-vinyl acetate copolymer supplied as pelletized reactor product. The manufacturer’s grade designation identifies the material as a nominal 1.5 g/10 min melt mass-flow rate class and a nominal 33 wt% vinyl acetate comonomer content. Incoming resin release is generally verified under ASTM D1238 or ISO 1133-1:2022 at 190 °C with a 2.16 kg load, and vinyl acetate concentration is quantified by Fourier transform infrared spectroscopy under ASTM D5594. Because the copolymer contains 33 wt% VA, its crystalline melting peak under ASTM D3418 is suppressed to 55–70 °C at 10 °C/min, and density generally falls within 0.95–0.97 g/cm³ under ASTM D792. The practical difference from lower-VA grades is a lower flexural modulus, higher polarity, lower heat-seal initiation temperature, and greater acetic acid generation risk. The low melt mass-flow rate differentiates the product from high-flow EVA grades used in hot-melt adhesives; it is better suited to crosslinked foam sheet, polymer modification, and high-melt-strength film where flow length is not the controlling variable. Published data for this specific configuration is limited; release decisions should use the batch certificate of analysis, not generic class values.
Thermal deacetylation is the primary processing constraint for HANWHA EVA 1533. At melt temperatures above 210 °C, vinyl acetate groups begin to eliminate acetic acid, and the reaction becomes autocatalytic when residual moisture or amine-based species are present. On a twin-screw extruder with 40–52 L/D, melt temperature should be managed by barrel zone profiling, not by excessive screw speed. A typical zone profile from feed throat to die is 120–140 °C, 160–180 °C, 175–195 °C, and 180–195 °C; the melt thermocouple should not exceed 210 °C for more than a short residence time. The 1.5 g/10 min melt mass-flow rate increases viscous dissipation in kneading elements, so screw design should favour distributive mixing over extended reverse kneading. On a 50 mm twin-screw line running 250–300 rpm at 30–40% torque, die melt pressure is commonly 70–120 bar; short-term pressure oscillation above 10 bar often signals pellet feed instability or melt-temperature inhomogeneity.
Acetic acid release creates die-lip corrosion, edge haze in cast film, and pinholes if pellet surface moisture exceeds 0.05 wt%. Drying at 60–70 °C for 2–4 h is recommended when packaging has been opened under relative humidity greater than 60%. The resin should not be compounded with free amine-containing slip concentrates, basic pigments, or unneutralized acid-sensitive catalysts; amines can accelerate deacetylation and narrow the safe processing window by as much as 10–15 °C. Batch-to-batch fluctuation in melt mass-flow rate from 1.5 g/10 min toward 1.2 g/10 min or 1.8 g/10 min will alter die pressure and cast-film thickness profile; incoming QC should monitor MFR and VA content under ASTM D1238 and ASTM D5594 rather than assume lot uniformity.
Where the product is selected for crosslinked foam, the combination of 33 wt% vinyl acetate and 1.5 g/10 min melt mass-flow rate provides low crystalline order and adequate melt strength for gas expansion. Dicumyl peroxide systems are typically initiated at 150–170 °C; the residual acetic acid content must be low because it can consume peroxide radicals and shift cure kinetics. Foaming trials should evaluate gel content by solvent extraction and expansion ratio against ASTM D792 density. When used as a PVC modifier or polyolefin compatibilizer, the copolymer is added at 5–20 wt% through a side feeder after the matrix polymer is fully melted; dispersion is assessed by scanning electron microscopy and tensile elongation under ASTM D638-14. The high-VA content improves adhesion to polar fillers and substrates. In comparison, the same manufacturer’s lower-VA grades with similar melt mass-flow rate exhibit higher stiffness and lower adhesion; higher-MFR grades in the 30–33 wt% VA class are preferred where the final article is injection molded or applied as hot melt. Published data for this specific configuration in compounded PVC is limited; torque rheometry is required before scaling to production.
| Property | 14–18 wt% VA | 25–28 wt% VA | 30–33 wt% VA (EVA 1533 class) | Test method |
|---|---|---|---|---|
| Melting peak | 85–100 °C | 65–80 °C | 55–70 °C | ASTM D3418 / ISO 11357-3 |
| Shore A hardness trend | 90–95 | 80–90 | 70–85 | ASTM D2240 / ISO 48-4 |
| Polar adhesion trend | low | moderate | high | ASTM D1876 peel |
| Acetic acid release risk | low | moderate | higher | thermal deacetylation pH scan |
Benchmarking HANWHA EVA 1533 against high-flow EVA adhesive grades shows a basic rheological conflict. The 1.5 g/10 min MFR creates high melt viscosity at 190 °C, which inhibits flow into narrow hot-melt nozzle slots. The 33 wt% VA content would ordinarily improve substrate wetting, but the molecular weight is too high for conventional hot-melt application. The product is therefore not a drop-in replacement for high-MFR EVA grades with 150–400 g/10 min MFR in hot-melt compounding. It is more appropriately evaluated where melt strength is essential: cast adhesive film, crosslinked foam, and high-filler flame-retardant sheet. In flame-retardant composites, the high polarity of the 33 wt% VA polymer increases filler wetting of aluminium trihydrate and magnesium dihydroxide; twin-screw torque is higher than LDPE, and barrel temperatures should be reduced by 10–20 °C compared with LDPE to prevent deacetylation. Published data for this specific configuration in flame-retardant composites is limited.
On a cast-film line with polished chill rolls, HANWHA EVA 1533 requires melt temperatures in the 160–195 °C range; die temperatures above 200 °C increase build-up of degraded vinyl acetate species on the lip. Edge trim may be recycled at 10–20 wt% into the main feed if melt filtration is 80–100 mesh and the melt temperature remains below 210 °C. For blown film, the low MFR of 1.5 g/10 min provides bubble stability at 2:1–3:1 blow-up ratios, but frost-line height must be reduced to avoid excessive crystallinity gradient and film curl. High-VA EVA film has lower blocking resistance than LDPE; roll storage above 30 °C can promote blocking and should be avoided unless anti-block masterbatch is included.
Compliance documentation for HANWHA EVA 1533 must be aligned to the intended regulatory territory. The base ethylene-vinyl acetate copolymer is generally described under FDA 21 CFR 177.1350 for food-contact articles, subject to the extraction limits and end-use restrictions of that section. In the European Union, food-contact plastics are regulated under Regulation (EU) 10/2011; specific migration testing depends on the final article geometry and food simulant selection. REACH obligations under Regulation (EC) No 1907/2006 and heavy-metal restrictions under RoHS Directive 2011/65/EU are normally addressed by the supplier for the unpigmented resin; downstream colorants, fillers, and functional masterbatches can alter the final article status.
| Parameter | Reference method | Documentation source | Notes |
|---|---|---|---|
| Melt mass-flow rate | ASTM D1238 / ISO 1133-1:2022 | Batch certificate of analysis | 190 °C, 2.16 kg |
| Vinyl acetate content | ASTM D5594 / ISO 8985 | Batch certificate of analysis | FTIR quantitation |
| Density | ASTM D792 / ISO 1183-1 | Batch certificate of analysis | Class trend 0.95–0.97 g/cm³ |
| Melting peak | ASTM D3418 / ISO 11357-3 | Batch certificate of analysis | 10 °C/min scan |
| Moisture | ASTM D6869 | Incoming QC if packaging damaged | Dry if > 0.05 wt% |
| Food contact | FDA 21 CFR 177.1350; Regulation (EU) 10/2011 | Supplier declaration | Final article testing required |
| Heavy metals | RoHS Directive 2011/65/EU | Supplier declaration | Unpigmented resin basis |
Operational boundaries include avoidance of prolonged storage above 30 °C in pelletized form for high-VA EVA because of blocking and acetic acid generation. The material is not suited to continuous service above 90 °C or to immersion in aromatic hydrocarbon solvents; swell testing under ASTM D543 should be performed for chemical compatibility. Published data for this specific configuration in hydrocarbon immersion is limited; qualification must be performed on the final fabricated article.
