| HS Code | 950047 |
| Vinyl Acetate Content | 18% |
| Melt Flow Rate 190 C 2 16kg | 7 g/10min |
| Density | 0.937 g/cm³ |
| Melting Point | 88°C |
| Vicat Softening Point | 72°C |
| Tensile Strength At Break | 14 MPa |
| Elongation At Break | 800% |
| Shore Hardness | 93 Shore A |
| Brittleness Temperature | -76°C |
| Tear Strength | 35 N/mm |
| Flexural Modulus | 35 MPa |
| Refractive Index | 1.48 |
As an accredited ATEVA 1807EG Ethylene Vinyl Acetate Copolymer factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | ATEVA 1807EG Ethylene Vinyl Acetate Copolymer supplied in 25 kg polyethylene bags, palletized and stretch-wrapped for safe transport. |
| Container Loading (20′ FCL) | ATEVA 1807EG Ethylene Vinyl Acetate Copolymer is packed in 20′ FCL containers, secured on pallets for safe, efficient transport. |
| Shipping | ATEVA 1807EG Ethylene Vinyl Acetate Copolymer ships as a non-hazardous polymer resin in solid pellet form. It should be packed in sealed polyethylene-lined bags or containers, kept away from moisture and heat, and transported dry. No dangerous goods classification applies under standard shipping regulations. |
| Storage | Store ATEVA 1807EG Ethylene Vinyl Acetate Copolymer 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 storing near strong oxidizers. Maintain moderate temperatures to preserve flow and processing properties. Use within recommended shelf life. |
| Shelf Life | Shelf life is typically two years when stored in a cool, dry place, away from direct sunlight and moisture. |
For ATEVA 1807EG, the relevant downstream segmentation is limited to processes that accept a nominal vinyl acetate content of 18% by weight and a melt flow rate of 0.7 g/10 min under ISO 1133-1:2022 at 190°C with a 2.16 kg load. Manufacturer technical data list density near 0.938 g/cm³, a Vicat softening point near 72°C, and a melting point near 86°C. These boundary conditions place the resin in the high-molecular-weight, low-melt-flow segment of EVA, which restricts thin-wall injection molding use and favors blown film, sheet extrusion, compounding, and coextrusion processes in which high melt extensibility and shear thinning are exploitable. Processing windows are narrow: melt temperatures above 210°C in blown film can increase gel formation and plate-out, whereas temperatures below 175°C produce inadequate homogenization in blends with linear low-density polyethylene. The following application scenarios define the downstream manufacturing conditions, compliance obligations, addition ranges, and terminal product classes for which this EVA grade is technically appropriate.
Formulations for agricultural silage covers and heavy-gauge industrial liners commonly blend 20–35 wt% ATEVA 1807EG with 65–80 wt% LLDPE or LDPE having a melt flow rate of 0.25–1.0 g/10 min, plus 0.3–0.8 wt% hindered amine light stabilizer masterbatch and 2–4 wt% carbon black masterbatch when UV resistance is specified. The EVA fraction raises the blown film dart impact strength and low-temperature tear resistance without requiring significant draw ratio adjustment. Compliance for silage covers follows EN 13207:2018 for thermoplastic silage films where oxygen permeability and mechanical durability are jointly specified; for industrial liners used in temporary containment, thickness tolerances and tensile properties are evaluated under ISO 527-3:2018, and puncture resistance is evaluated under ASTM D4833-07(2020). Blown film processing is performed on a single-screw extruder with a barrier screw, L/D 25:1–30:1, die diameter 150–350 mm, die gap 1.8–2.5 mm, blow-up ratio 2.0–2.8, and melt temperature 185–205°C. Frost-line height is held between 1.5 and 3.0 die diameters to stabilize bubble geometry; excessive frost-line elevation above 4.0 die diameters is associated with film gauge variation exceeding ±8%. Terminal products include multiple-layer silage covers of 80–180 µm nominal thickness, agricultural overwrap films, heavy-gauge refuse sack liners above 100 µm, and temporary moisture or dust barriers for construction and logistics applications.
In crosslinked polyolefin foam sheet production, ATEVA 1807EG functions as the primary matrix rather than as a blend modifier because the 18% vinyl acetate content permits sufficient interaction with calcium carbonate and azodicarbonamide while retaining enough ethylene-chain crystallinity for green strength before expansion. A representative formulation uses 100 phr ATEVA 1807EG, 2.5–4.0 phr azodicarbonamide blowing agent, 0.55–0.80 phr dicumyl peroxide crosslinking agent with purity above 99%, 1.5–2.5 phr zinc oxide as blowing activator, 0.3–0.7 phr stearic acid as process lubricant, and 10–30 phr calcium carbonate with median particle size of 2–5 µm. Mixing is conducted in an internal mixer or Banbury-type chamber at 110–125°C for 8–12 min, followed by two-roll milling at 90–100°C to form a uniformly colored pre-sheet. Pelletized preform or sheet is then crosslinked and expanded in a compression molding press at 155–170°C and 15–25 MPa for 15–25 min; density reduction from 0.92 g/cm³ to 0.15–0.35 g/cm³ is typical. Failure modes on production lines include pre-scorch during milling when roll temperature exceeds 105°C and uneven expansion when pre-sheet thickness varies more than ±0.3 mm. Compliance for flexible cellular olefin materials references ASTM D3575-20 for compression set, tensile strength, and apparent density; chemical safety obligations are assessed under REACH Regulation (EC) No 1907/2006, and California Proposition 65 restricts azodicarbonamide in consumer products above specified safe harbor levels, so alternative endothermic blowing agents are substituted where regulatory exposure is unacceptable. Terminal products include EVA foam midsoles, insoles, sandal sheets, exercise mats, knee pads, and impact-protective packaging inserts.
Halogen-free flame-retardant sheathing compounds select ATEVA 1807EG for its high filler-loading capacity and elongation retention after mineral flame-retardant addition. In this application, the resin fraction is typically 35–45 wt% of the total compound, with the remainder split between 55–60 wt% precipitated alumina trihydrate with median particle size of 0.8–1.5 µm and 1–3 wt% processing aids such as PE wax or silicone masterbatch. The decomposition endotherm of alumina trihydrate at 180–200°C requires compounding temperatures below that onset, so co-rotating twin-screw extrusion is performed with barrel temperatures of 140–175°C, screw speed of 250–400 rpm, and specific mechanical energy input of 0.18–0.30 kWh/kg. After strand pelletization and drying at 80°C for 4 h, the compound is extruded onto single-core or multi-core cable at melt temperature 160–185°C, screw L/D 25:1–30:1, and die pressure 15–35 MPa. Compliance is assessed under IEC 60754-1:2011 and IEC 60754-2:2011 for acid gas release, IEC 61034-2:2013 for smoke density, and IEC 60502-1:2021 for low-voltage cable construction. Quantitative compound properties for this exact formulation on a specific cable extrusion line are limited in open literature; the stated processing windows represent industrial benchmarks and require pilot confirmation before full production. Terminal products include halogen-free sheathed low-tension power cables, control cables, and building wire designed for public infrastructure where combustion toxicity and smoke density limits are specified.
In cast coextrusion of multi-layer flexible packaging, ATEVA 1807EG is introduced into sealant or tie layers at 100% or as a 20–40% blend with LDPE, depending on seal initiation requirements and tear strength balance. The low melt flow rate requires higher melt temperatures and lower line speeds than high-MI EVA sealants, but the benefit is a broader hot-tack plateau and better interlayer adhesion to polyethylene-based substrates. Typical five-layer structures include PE/EVA/tie/EVOH/tie where the EVA layer is 8–20 µm of a total 50–120 µm film. Die temperatures of 220–260°C, chill roll temperature 15–25°C, and die-to-chill roll air gap 100–200 mm are used to control haze and seal strength. Compliance for food contact is governed by FDA 21 CFR 177.1350(a) for EVA copolymers in contact with food, and by EU Regulation (EU) No 10/2011 with Annex II migration limits; specific migration testing is performed under EN 1186-1:2002 for overall migration and EN 13130-1:2004 for residual monomer. Terminal products include lidding films for dairy cups, frozen food pouches, stand-up pouch sealant webs, and cast stretch wrap structures where print adhesion and seal integrity are jointly specified.
Heavy-duty collation shrink film and industrial transit packaging achieve high free shrink and puncture resistance when ATEVA 1807EG is blended at 15–30 wt% with LLDPE and minor amounts of high-pressure LDPE. The EVA component reduces crystallite size and widens the orientation temperature window, allowing biaxial stretching in a double-bubble process at 105–125°C without film fracture. Formulations additionally include 0.3–0.5 wt% erucamide slip additive, 0.5–1.0 wt% antiblock masterbatch with synthetic silica, and 0.2–0.5 wt% antioxidant masterbatch. Primary tube extrusion uses a grooved-barrel single-screw extruder with L/D 30:1 and die gap 0.8–1.4 mm; the second bubble is inflated at a blow-up ratio of 1.5–2.5 and collapsed at 15–25°C. Free shrink performance is measured under ASTM D2732-14(2020) at 110°C for machine and transverse directions; tensile strength and elongation are measured under ISO 527-3:2018. Terminal products include 50–150 µm collation shrink film for bottled beverages, industrial shrink hoods, and moisture-barrier overwrap for panelized goods.
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ATEVA 1807EG is a pelletized ethylene-vinyl acetate random copolymer whose product designation is conventionally interpreted as nominal 18 wt% vinyl acetate comonomer content and nominal melt index 0.7 g/10 min when measured at 190 °C under 2.16 kg load according to ASTM D1238. Typical density is 0.940 g/cm³ per ISO 1183-1:2019. Differential scanning calorimetry under ASTM D3418-15 generally places the peak melting endotherm between 84 °C and 88 °C, and the Vicat softening temperature is near 70 °C when measured using ASTM D1525-17e1 A50 conditions. The unfilled copolymer exhibits Shore A hardness from 90 to 94 under ISO 868. Because vinyl acetate content remains below the 28 wt% threshold at which ethylene crystallinity falls sharply, the material retains enough crystalline fraction for green strength in extruded profiles, foam expansion, and calendered sheet while offering improved polarity, filler wetting, and low-temperature flexibility relative to unmodified LDPE.
Because the pellet surface retains sufficient ethylene crystallinity to resist blocking at ambient temperatures below 25 °C, closed packaging protects the grade from moisture adsorption and UV exposure. Pre-drying at 70–80 °C for 2–4 h is justified when packaging has been opened in an environment exceeding 70% relative humidity, since surface moisture can produce splay and surface defects in extruded profiles. Bulk silo and hopper systems should be purged with dry air at a dew point below −20 °C. The resin is not hygroscopic in the polyamide or polyester sense, but condensation on cold pellets transferred into a warm production hall is a documented processing fault when ambient dew point is above pellet temperature.
The melt index of 0.7 g/10 min differentiates ATEVA 1807EG from otherwise similar 18 wt% vinyl acetate grades designed for high-speed injection molding with melt indices above 2 g/10 min. In melt processing, the higher molecular weight fraction raises zero-shear viscosity and elongational viscosity, both of which govern foaming, blown-film bubble stability, and thermoforming sag. A higher-melt-index grade with equivalent comonomer content permits shorter cycle times and lower injection pressure but sacrifices die swell, melt strength, and extrusion bubble stability. Published capillary rheometry data for this exact grade is limited; for material substitution, normalized viscosity comparison under ISO 11443:2021 is recommended at shear rates from 100 s−1 to 1000 s−1.
Vinyl acetate content at 18 wt% places the copolymer in an intermediate polarity range. X-ray and DSC determinations on EVA copolymers in this composition window typically show a crystalline fraction of 25–30%, compared with 10–18% for 28 wt% VA grades. That crystallinity contributes to tensile modulus, hardness, and creep resistance, while the amorphous ethylene-vinyl acetate sequences impart low-temperature flexibility and environmental stress-crack resistance. Increasing vinyl acetate content above 18 wt% reduces peak melting temperature from roughly 86 °C to near 73 °C in 28 wt% VA copolymers and broadens the melting range. Those changes lower heat-seal initiation temperature and improve adhesion, but they also reduce upper service temperature and increase surface tack.
Batch-to-batch variation in melt index should be monitored under ASTM D1238. Converter specifications commonly apply a tolerance of ±0.1 g/10 min around the nominal 0.7 g/10 min. A received lot approaching +0.2 g/10 min above nominal can alter foam density and bubble-size distribution because melt strength is disproportionately sensitive to changes at the low end of the melt-index scale.
| Property | Test method | ATEVA 1807EG | 18 wt% VA, MI 2.5 | 28 wt% VA, MI 6.0 |
|---|---|---|---|---|
| Vinyl acetate content | FTIR or internal standard | 18 wt% | 18 wt% | 28 wt% |
| Melt index | ASTM D1238 | 0.7 g/10 min | 2.5 g/10 min | 6.0 g/10 min |
| Density | ISO 1183-1:2019 | 0.940 g/cm³ | 0.940 g/cm³ | 0.950 g/cm³ |
| Peak melting endotherm | ASTM D3418-15 | 84–88 °C | 82–86 °C | 72–76 °C |
| Shore A hardness | ISO 868 | 90–94 | 88–92 | 75–80 |
| Tensile strength at break | ISO 527-2:2012 | 20–25 MPa | 18–22 MPa | 14–18 MPa |
| Elongation at break | ISO 527-2:2012 | 700–800% | 750–850% | 800–900% |
The high melt strength of 0.7 g/10 min EVA permits blown-film towers to operate at blow-up ratios of 2.5:1 to 3.5:1 without bubble flutter when the frost line is maintained between 200 mm and 400 mm from the die face. On a 50 mm single-screw blown-film line with a 100 mm annular die, die gap of 0.8 mm, and air ring pressure drop of 25 mbar, melt temperature at the die lip is held at 185–195 °C. Higher-melt-index EVA grades are less tolerant of elevated blow-up ratios because their lower elongational viscosity permits film sag and uneven gauge. Gauge variation measured by a capacitance thickness scanner should remain below ±5% across the web. Bubble instability is often accompanied by gauge bands of ±10% or worse and reduced dart impact strength under ASTM D1709-22.
Foam extrusion benefits from the long relaxation-time distribution associated with low melt index. In chemically blown formulations using azodicarbonamide at 1.0–2.0 phr and zinc oxide at 0.2–0.5 phr, gas release onset occurs at approximately 160–190 °C; adequate melt strength at these temperatures suppresses cell coalescence. Expanded densities of 160–220 kg/m³ are achievable on tandem foam lines with twin-screw primary mixing and single-screw cooling. Crosslinked foam systems based on dicumyl peroxide at 0.6–1.0 phr and triallyl cyanurate coagent at 0.3–0.5 phr are also processable. Scorch time measured by moving-die rheometer at 180 °C is shortened when acidic fillers are present, so pH-neutral fillers should be selected.
Injection molding of ATEVA 1807EG requires clamp tonnage calculations based on projected area and cavity pressure of 400–600 bar. On a 120 t hydraulic injection-molding machine with a 35 mm screw, melt temperature should not exceed 200 °C; barrel zones from feed to nozzle are typically 150/170/180/190 °C. Because the material has a long relaxation time, gate freeze time is shorter than for high-flow grades. Holding pressure should be maintained until gate sealing, which may occur at 8–12 s for a 2 mm wall. Sink marks and warpage arise when the packing phase is terminated before gate seal. Mold temperatures of 20–40 °C are adequate for dimensional stability, but chilled water below 10 °C can create internal stresses and stress-cracking tendency in constrained parts.
As a base resin for mineral-filled compounds, ATEVA 1807EG accepts calcium carbonate loadings up to 40 wt% without excessive melt fracture when a fatty acid–coated carbonate with median particle size 2–3 µm is used. The high melt viscosity improves dispersive mixing in twin-screw extruders with L/D 40:1 and distributive mixing elements at 200–250 rpm, but barrel temperature settings must avoid stock temperatures exceeding 220 °C. Torque is typically higher than for 2.5 g/10 min EVA; drive motor sizing should include a 10–15% safety margin over the calculated specific energy of 0.18–0.24 kWh/kg. Zinc stearate at 0.2–0.5 wt% functions as an external lubricant, but zinc-containing additives above 1 wt% may catalyze deacetylation at high residence times, releasing acetic acid and producing gel specks.
For heat-seal layers, ATEVA 1807EG can provide a seal initiation temperature approximately 8–12 °C higher than 28 wt% VA copolymers. In flexible packaging, that difference is significant when seal-bar dwell times are below 0.5 s or when fatty-product contamination is expected. Adhesion performance against aluminum foil and corona-treated polyethylene follows vinyl acetate content. The 18 wt% VA grade is selected when excessive adhesion or cohesive peel is undesirable. If peel strength measured by ASTM F88/F88M-21 must exceed 12 N/15 mm at a seal temperature of 110 °C, a higher-VA grade should be evaluated rather than increasing seal-bar temperature, because the material may thin and fail at the seal root.
In photovoltaic encapsulant sheeting, standard formulations use 28–33 wt% VA copolymers with melt indices above 20 g/10 min to achieve complete melt spreading over glass and cell surfaces at lamination temperatures of 150 °C within 15 min. ATEVA 1807EG is not effective in this application because its melt viscosity remains too high and its crystalline fraction impedes optical coupling. Void retention around busbars and cell edges has been observed when low-melt-index 18 wt% VA copolymers are used. Therefore, photovoltaic-grade EVA, not this product, is specified for encapsulation.
Thermogravimetric analysis of EVA copolymers in nitrogen shows a two-step mass loss: acetic acid elimination begins near 250–280 °C and main-chain degradation follows above 420 °C. In air, radical oxidation lowers the onset by 20–30 °C. For ATEVA 1807EG, melt processing should remain below 220 °C to keep deacetylation below 0.5% conversion per pass. Residence time at 200 °C above 10 min should be avoided because acetic acid release can corrode die lips and promote gel formation. Nitrogen blanketing of hoppers and vent ports is justified when regrind ratios exceed 30 wt%.
Food-contact use of EVA copolymers is addressed under FDA 21 CFR 177.1350, which contains compositional and extractives limitations specific to vinyl acetate content and end-use conditions. Users must verify the 18 wt% VA grade against the paragraph applicable to the intended food type and processing history. EU plastic food-contact materials under Regulation (EU) No 10/2011 specify a specific migration limit for vinyl acetate of 12 mg/kg food simulant. Converters must verify that migration from the finished packaging structure does not exceed this limit under EU 10/2011 test conditions. Industrial users are also subject to REACH Regulation (EC) No 1907/2006 SVHC disclosure obligations for additives in the compounded product. The unfilled copolymer contains no halogenated flame retardants and is normally outside the scope of RoHS Directive 2011/65/EU, but cadmium-based pigments or lead heat stabilizers must be excluded by procurement specification.
| Standard/Regulation | Clause or test parameter | Applicability and limit |
|---|---|---|
| FDA 21 CFR 177.1350 | EVA copolymers for food contact | Compositional and extractives limits; end-use dependent |
| Regulation (EU) No 10/2011 | Vinyl acetate specific migration limit | 12 mg/kg food simulant |
| REACH (EC) No 1907/2006 | SVHC screening and communication | Applies to additives and imported articles |
| RoHS Directive 2011/65/EU | Restricted heavy metals and flame retardants | Applies only if added compounds introduce restricted substances |
ATEVA 1807EG is not recommended for continuous immersion in aromatic hydrocarbons, ketones, esters, or chlorinated solvents because the vinyl acetate segments undergo swelling and loss of mechanical integrity. The grade should not be processed with acid-functionalized additives at loadings above 1 wt% because residual acidity accelerates deacetylation and increases melt acidity. Amine-based antistats and certain hindered amine light stabilizers can also displace acetic acid under high-temperature processing; if antistatic performance is required, a non-amine migrating or permanent additive should be selected. Outdoor exposure requires carbon black at 2.0–2.5 wt% or an appropriate UV stabilizer package. Unstabilized service above 60 °C in air may lead to molecular-weight reduction and surface tack. For applications with continuous service below −40 °C, the grade retains flexibility, but impact testing under ISO 179-1:2010 should be performed on the finished part because weld-line strength is geometry-dependent.
