| HS Code | 140229 |
| Appearance | Milky white liquid |
| Solids Content | 55 ± 1% |
| Viscosity Brookfield Lv 3 30 Rpm 25 C | 800 - 2000 mPa·s |
| Ph | 4.0 - 5.0 |
| Density At 20 C | 1.05 g/cm³ |
| Glass Transition Temperature Tg | -14°C |
| Minimum Film Forming Temperature Mfft | 0°C |
| Particle Size | Approx. 1 μm |
| Ionic Character | Anionic |
| Residual Vinyl Acetate Monomer | < 0.5% |
| Mechanical Stability | Excellent |
| Film Appearance | Clear and flexible |
As an accredited VINAVIL EVA 2603 L VAE Emulsion factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | VINAVIL EVA 2603 L VAE Emulsion is supplied in 200 kg polyethylene-lined steel drums, ensuring safe storage and handling. |
| Container Loading (20′ FCL) | 20′ FCL loading of VINAVIL EVA 2603 L VAE Emulsion: secure drums/pails on pallets, brace firmly, prevent shifting, ensure proper labeling and ventilation. |
| Shipping | VINAVIL EVA 2603 L is a water-based vinyl acetate-ethylene copolymer emulsion, typically shipped in drums, IBCs, or bulk tankers. It is generally non-hazardous under transport regulations, but should be protected from freezing, extreme heat, and UV exposure. Ensure containers remain sealed during transit to prevent contamination or skinning. |
| Storage | Store VINAVIL EVA 2603 L VAE Emulsion in original, tightly sealed containers in a cool, dry, well-ventilated area. Avoid direct sunlight, frost, and temperatures above 35°C; recommended storage range is 5–30°C. Keep away from oxidizing agents and foodstuffs. Stir gently before use and observe shelf-life guidelines. |
| Shelf Life | Shelf life is 12 months from production when stored in sealed containers, protected from frost and heat. |
VINAVIL EVA 2603 L functions as the principal binder in food-grade folding-carton side-seam adhesives where clay-coated SBS board and high line speed impose contradictory requirements: aggressive wet tack for immediate compression, yet enough open time to avoid skinning on the applicator wheel. In a typical side-seam formulation, the emulsion is supplied at 60–85 wt% of the wet adhesive, with a low-viscosity aqueous thickener at 0.5–1.5 wt% and a defoamer at 0.1–0.4 wt% to control recirculation foam. Rotary carton lines operating above 250 m/min subject the adhesive to shear rates exceeding 10,000 s⁻¹ in the wheel-to-board transfer nip; failure to shear-thin sufficiently produces slinging at the tail edge of the flap. The adhesive film is compressed for 0.5–3 s under side-seam compression belts before hot-air assisted drying at 40–70 °C. On machine trials, foaming in the return trough is the most frequent line stoppage; the addition of 0.15–0.25 wt% mineral-oil defoamer reduces foam rise but excessive dosage reduces T-peel force on polyester-coated board with surface energy in the 38–42 dyn/cm range. Compliance under FDA 21 CFR 175.105 applies when the adhesive is separated from food by a functional barrier; for paper-to-paper water-based laminations, 21 CFR 176.170 and 21 CFR 176.180 govern the coated paperboard. Bond development is tracked by ASTM D1876 T-peel on specimens conditioned at 23 °C and 50% RH. Terminal products include cereal carton side seams, multi-wall bag bottom patches, cup-stock seam bonding, and food-service tray corner locks.
In dry-mix plants, VINAVIL EVA 2603 L is introduced as a liquid modifier either into gauging water or as post-blended liquid on site. Dosage is expressed as dry polymer-to-cement ratio: 0.05–0.15 for C1-class thin-bed tile adhesive, 0.10–0.20 for C2TE deformable systems, and 0.08–0.12 for pumpable self-leveling compounds. Above 0.20, air entrainment measured per EN 1015-7 rises sharply, and 28-day compressive strength by EN 12190 can fall below 15 MPa, limiting use in load-bearing underlayments. Mixing follows the EN 196-1 planetary paddle shear profile: slow mixing at 140 ± 5 rpm for 60 s, rest for 120 s, then high-shear at 285 ± 10 rpm for 90 s. The ethylene comonomer reduces open time and improves wet tensile adhesion; after water immersion, C2 systems require tensile adhesion of at least 1.0 MPa by EN 12004, and after freeze–thaw, C2T systems require ≥ 1.0 MPa. Compliance is established through EN 12004, EN 12002 transverse deformation classification, and ISO 13007-1 performance classes. A documented plant failure occurs when the emulsion contacts high-pH dry cement during simultaneous charging; pre-dilution in gauging water at 1:1 before contacting cement prevents coagulation and screen blockage in continuous mixer feed lines. The finished forms are thin-bed tile adhesives, large-format porcelain bond coats, and pumpable self-leveling compounds with fine silica sand.
| End-use sector | Regulatory reference | Test method | Document clause / designation |
|---|---|---|---|
| Food-carton side-seam | FDA 21 CFR 175.105 | ASTM D1876 | Adhesive peel on SBS board |
| Paperboard food packaging | FDA 21 CFR 176.170; 176.180 | TAPPI T 494 | Repulpability and tensile |
| Cementitious tile adhesive | EN 12004; ISO 13007-1 | EN 12002 | Transverse deformation class |
| Nonwoven wipes and filtration | OEKO-TEX Standard 100; ISO 9073 | ISO 9073-2; ISO 9073-3 | Tensile/tear property |
| Tufted carpet pre-coat | REACH Annex XVII; CDPH Standard Method v1.2 | ASTM D1335; ASTM D3936 | Tuft bind and delamination |
| Bottle labelling adhesive | FDA 21 CFR 175.105; EU 2023/2006 | FTM 9; ASTM D779 | Loop tack and water resistance |
Filtration-grade wet-laid mats and spunlaced wipes achieve tensile integrity only after the binder is uniformly distributed through the web. Binder addition is expressed as dry parts per hundred dry fibre: 10–20 phr for household wipes, 15–30 phr for pleatable air filtration media, and 20–35 phr for rigid filter paper reinforcement. In a three-roll padder, nip pressure is set to 2–4 bar to obtain wet add-on of 100–200%; downstream through-air drying at 130–150 °C for 2–3 min removes water and coalesces the emulsion. The main process defect is binder migration during drying, which creates surface skinning and lowers wet tensile strength in the core of the mat; reducing initial add-on and increasing dwell time before high-temperature zones suppresses migration. Compliance references include ISO 9073-2 for dry tensile, ISO 9073-3 for tear, and OEKO-TEX Standard 100 when the wipe is marketed as skin-contact. Finished products are spunlace wet wipes, vacuum filter bags, pleatable HVAC media, and disposable industrial wipes.
In tufted carpet finishing, VINAVIL EVA 2603 L is combined with calcium carbonate filler at filler loading of 50–70% on total compound weight, with the emulsion serving as the predominant binder at 30–50 wt% of the wet pre-coat. Viscosity is adjusted to 8,000–15,000 mPa·s at 25 °C using cellulose ether thickeners. The compound is applied by knife-over-roll or puddle roll at a wet pre-coat weight of 300–800 g/m², then dried in a three-zone oven with zone temperatures of 120 °C, 140 °C, and 150 °C. Tuft bind after curing measured by ASTM D1335 and delamination strength by ASTM D3936 define acceptance. At filler loadings above 70%, blade chatter becomes visible on knife-over-roll applicators and delamination strength falls because insufficient coalesced film remains to bind the filler. Regulatory compliance typically requires REACH Annex XVII restrictions for vinyl acetate monomer and APEO-free dispersing agents; for indoor carpet systems, CDPH Standard Method v1.2 may apply to low-VOC assemblies. End products are broadloom carpet, carpet tiles, stair treads, and automotive floor mats.
Repulpable laminating adhesives for paper tubes and honeycomb panels require a balance between wet tack and dispersibility in the repulper. VINAVIL EVA 2603 L is formulated at 55–75 wt% as supplied, with plasticizer-free formulation to avoid loss of paper strength. A gravure or smooth roll applicator deposits 15–25 g/m² dry coat weight onto one paper substrate before nipping with the second web; drying follows at 70–90 °C with dwell time of 30–60 s. On high-speed spiral tube winders, adhesive starvation at the roll edges causes visible ply lift; balancing pick-up through engraved cylinder cell volume and doctor blade pressure controls coat weight. Compliance is evaluated under FDA 21 CFR 176.170 for paperboard in food contact when used as laminating adhesive, and repulpability is confirmed by TAPPI repulpability methodology with screen retention loss below 5%. Finished products include spiral-wound cores, honeycomb paper backing, tube windings, and edge-protector channels.
Returnable glass bottle labelling subjects the adhesive to humid condensation conditions and caustic washing while the line speed compresses open time. VINAVIL EVA 2603 L is used in casein-free adhesives at 50–80 wt% wet basis, often blended with 5–15 wt% tackifier resin dispersion or rosin ester to achieve loop tack of 500–800 g/cm measured by FTM 9. Rotary labelers apply the adhesive by vertical pallet drums at speeds of 30,000–60,000 bottles/h; the open time must remain above 10 s for label transfer, while final set time must be below 15 s under forced air. After 24 h at 5 °C and 85% RH, condensation whitening is evaluated by visual opacity change; water resistance is assessed by ASTM D779 or static immersion on commercial glass. Process failures on returnable lines commonly occur when the adhesive film becomes too hydrophobic after set, causing caustic washing labels to leave ghost residues on the bottle. Regulatory references include FDA 21 CFR 175.105 for indirect food contact, EU 2023/2006 GMP for food contact materials, and migration assessment under EU 10/2011 when the label is on the package exterior and no functional barrier is present. End products are beverage bottle neck labels, returnable export crate labels, glass food jar labels, and aluminium can wrap labels.
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VINAVIL EVA 2603 L is a water-based vinyl acetate–ethylene copolymer emulsion supplied as a milky-white aqueous dispersion. The grade is part of the EVA 2603 series and is classified as a low-viscosity variant for adhesive and converting operations. The non-volatile content is specified at 55 ± 1% by mass according to ISO 3251, with pH controlled between 4.5 and 5.5 per ISO 976. Brookfield viscosity at 25 °C is specified in the 3,000–5,000 mPa·s range using spindle 3 at 20 rpm per ISO 2555. The minimum film-forming temperature is approximately 0 °C per ISO 2115, and density at 20 °C is approximately 1.06 g/cm³ per ISO 2811. Differential scanning calorimetry according to ISO 11357-2 places the dry-film glass transition temperature near 0 °C. The values in Table 1 represent the typical property envelope, and the manufacturer’s certificate of analysis remains the governing specification for any given batch.
| Property | Value or range | Reference method |
|---|---|---|
| Non-volatile content | 55 ± 1% | ISO 3251 |
| pH | 4.5–5.5 | ISO 976 |
| Brookfield viscosity at 25 °C, spindle 3 at 20 rpm | 3,000–5,000 mPa·s | ISO 2555 |
| Minimum film-forming temperature | ~0 °C | ISO 2115 |
| Density at 20 °C | 1.06 g/cm³ | ISO 2811 |
| Glass transition temperature, dry film | ~0 °C | ISO 11357-2 |
Unplasticized PVAc homopolymer dispersions generally exhibit a glass transition temperature in the 28–32 °C range and require coalescing solvents such as dibutyl phthalate, dibenzoate esters, or benzyl alcohol to form coherent films at ambient temperature. VINAVIL EVA 2603 L replaces a portion of that external plasticizer demand by copolymerizing ethylene directly into the vinyl acetate chain. The inserted ethylene units disrupt chain packing and increase backbone flexibility, reducing both the dry-film glass transition and the minimum film-formation temperature. The observed 0 °C MFFT allows film coalescence at typical converting temperatures without the addition of volatile plasticizers, which removes post-drying plasticizer migration into paperboard and flexible films.
This internal plasticization is not without mechanical trade-offs. Dried films from 2603 L exhibit lower tensile modulus and higher elongation at break than films from a fully formulated PVAc homopolymer because the ethylene segments reduce intermolecular hydrogen bonding. The change is measurable by tensile testing of cast films according to ISO 527-2 or by dynamic mechanical analysis under ISO 6721-1. Creep resistance also decreases, which places an upper service-temperature boundary on load-bearing applications. The film-formation temperature should not be read as a direct glass transition value; it is a coalescence threshold influenced by particle size, stabilizer type, drying rate, and substrate absorbency.
On high-speed paper-to-paper and film-to-paper lamination lines, the emulsion is diluted from its delivered solids to a coating viscosity of 800–1,500 mPa·s for gravure or metering-rod application. Wet coat weights between 20 g/m² and 45 g/m² are common for carton-board laminating, with final dry adhesive coverage determined by substrate porosity and machine retention. The low-viscosity L designation reduces pressure drop in circulation loops and improves coverage on chrome-plated coating rolls; however, a slightly higher wet coat weight may be required to achieve the same dry bond as the standard 2603 grade. This comparison should be verified against certificates of analysis from the same production period.
For food-contact paperboard packaging, the dried adhesive is generally evaluated under 21 CFR 175.105 when separated from food by a functional barrier, and migration limits under Regulation (EU) No 10/2011 must be established for direct contact. Blocking resistance of laminated board should be tested under the hot-stack conditions specified by the converter. TAPPI T 477 or ISO 11556 can provide a comparative laboratory method, but actual performance depends on coat weight, caliper, stacking pressure, and storage humidity.
In wood assembly, 2603 L is typically compounded with calcium carbonate filler at 20–40 parts by weight per 100 parts wet emulsion, plus a cellulose ether or starch ether thickener to adjust open time. Spread rates for softwood lamination and finger-jointing are generally 150–200 g/m²; press time under 0.5–1.0 N/mm² varies from 10 min to 30 min at 20 °C. The formulation target is set by EN 204 D-class requirements, but the actual D rating is formulation-dependent and must be confirmed by tensile shear tests on beech specimens conditioned according to EN 205.
The ethylene comonomer reduces embrittlement and improves bond flexibility on wood assemblies, but raw VAE films have lower water resistance than crosslinked PVAc systems. For applications needing D2 or D3 water resistance, formulators add blocked isocyanates, polyfunctional aluminum compounds, or glyoxal-based crosslinkers. Because the dispersion is anionically stabilized, addition of strongly acidic or highly multivalent additives can destabilize the latex and should be evaluated in a jar test before scaling to production. Pot life after crosslinker addition is shorter at temperatures above 25 °C and must be monitored by viscosity drift. Published data for the exact 2603 L crosslinked wood-adhesive configuration are limited; bench-scale verification under EN 205 is therefore required before production release.
The low-shear Brookfield viscosity assigned to 2603 L is not a reliable predictor of high-speed coating behavior. A full flow curve obtained on a controlled-stress rotational rheometer with a 60 mm 1° cone at 25 °C is required. Literature data for 55% solids VAE dispersions of this class typically show shear thinning from 3,000–5,000 mPa·s near 20 s⁻¹ to 80–150 mPa·s at 10,000 s⁻¹. For slot-die coating, a high-shear viscosity in the 100–300 mPa·s range at 10,000 s⁻¹ supports defect-free application on chrome-plated rolls at line speeds up to 180 m/min. High-shear viscosity outside this range can lead to ribbing, coating streaks, and die-edge build-up.
Process equipment should be selected to minimize shear history. Positive-displacement or air-operated double-diaphragm pumps are preferred over high-speed centrifugal pumps. Filtration through 250 µm screens is standard before slot-die heads; 100 µm screens are recommended before gravure coating. The dispersion should not be processed in bronze or brass fittings because copper ions can discolor the wet adhesive and accelerate skin formation. Stock-tank agitation with a high-speed disperser above 10 m/s tip speed can destroy the protective colloid and create grit that becomes visible as coating defects. Processing temperatures are typically maintained between 5 °C and 35 °C; extended heating above 60 °C promotes thermal skinning and viscosity drift.
Compared with a poly(vinyl acetate) homopolymer of equivalent solids, 2603 L eliminates the need for dibutyl phthalate or dibenzoate coalescents and reduces volatile organic compound contribution in the wet formulation. The dried film is softer and more elastic, which favors adhesion to flexible and difficult-to-wet substrates but reduces the tensile strength and creep resistance expected from a high-Tg PVAc. Compared with acrylic emulsions, the VAE backbone generally provides higher affinity to uncoated cellulosic surfaces and better wet tack on paperboard, while acrylics offer stronger ultraviolet resistance and better water resistance in outdoor and high-humidity exposure. Compared with high-ethylene VAE grades having MFFT below −5 °C, 2603 L maintains a higher ambient film modulus and better anti-blocking behavior, but it is less flexible when dried films are required to remain crack-free at sub-zero temperatures.
The product should be stored in tightly closed containers at 5–35 °C. Freeze-thaw cycling is not a design strength of the wet emulsion; exposure to temperatures below 5 °C can cause irreversible coagulation. The dispersion is anionic and therefore should be kept away from cationic polymer additives, borax, strong acids, and high-valence metal salts unless compatibility is confirmed. For operations requiring food-contact status, regulatory review under 21 CFR 175.105 and Regulation (EU) No 10/2011 must be completed for the final adhesive and substrate combination. REACH obligations under Regulation (EC) No 1907/2006 apply to the supplied material, and the safety data sheet sections 2, 7, and 15 provide storage, handling, and regulatory classifications.
