| HS Code | 890472 |
| Product Name | VINAVIL EVA 479-RS VAE Emulsion |
| Appearance | White milky liquid |
| Solid Content | 53 - 55 % |
| Viscosity | 1500 - 3500 mPa·s (Brookfield RVT, spindle 3, 20 rpm, 25°C) |
| Ph | 4.5 - 5.5 |
| Density | Approx 1.05 g/cm³ |
| Particle Size | Approx 1.0 - 3.0 µm |
| Glass Transition Temperature Tg | About -5°C |
| Minimum Film Formation Temperature Mfft | About 0°C |
| Stabilization System | Polyvinyl alcohol (PVOH) stabilized |
| Film Characteristics | Flexible, transparent, water-resistant film with good adhesion |
As an accredited VINAVIL EVA 479-RS VAE Emulsion factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | VINAVIL EVA 479-RS VAE Emulsion is supplied in 1,000 kg plastic containers or 200 kg drums, ensuring safe storage and handling. |
| Container Loading (20′ FCL) | 20′ FCL loaded with Flexitank or drums, securely braced, avoiding heat and shifting for safe VAE emulsion transport. |
| Shipping | VINAVIL EVA 479-RS is shipped as a vinyl acetate-ethylene copolymer emulsion, typically non-hazardous and not regulated for transport. Protect from freezing and extreme heat. Use closed or vented containers, secure upright loads, and prevent spills. Avoid contact with strong oxidizers. Standard industrial chemical handling applies. |
| Storage | Store VINAVIL EVA 479-RS in original, tightly sealed containers in a cool, dry, well-ventilated area away from direct sunlight and heat sources. Maintain temperatures between 5°C and 35°C; protect from freezing. Avoid prolonged storage at high temperatures. If slight settling occurs, gently stir before use. Keep out of reach of unauthorized personnel. |
| Shelf Life | Shelf life is 12 months from manufacture when stored in original sealed containers at recommended temperatures, avoiding freezing. |
High-speed paper-to-board lamination lines operating at 80–120 m/min typically demand a low-viscosity adhesive that can be delivered through a three-roll differential speed coater without misting or foaming. VINAVIL EVA 479-RS, supplied within the high-solids class of VAE dispersions at 55–60% dry solids as measured by ISO 3251:2019, is typically diluted with deionized water to 40–50% solids for reverse gravure or smooth roll coater runs; the dilution ratio is not a fixed parameter because machine speed, engraved cell volume, and substrate porosity interact. For porous paper-to-paper structures, coat weights of 3–6 g/m² dry are metered by wire-wound rod or direct gravure, then the web is dried in a three-zone forced-air tunnel with zone temperatures of 90–110°C before combining. Addition of 0.5–2.0 parts of a glyoxal-based insolubilizer per 100 parts wet dispersion is required where the laminate must resist wet delamination in cold-chain distribution; once added, mixed adhesive pot life at 23°C drops to 6–10 h, so continuous meter-mix or split-batch preparation is used on production lines. Bond quality is assessed by T-peel after 24 h water immersion according to ASTM F904-16; published specific peel values for VINAVIL EVA 479-RS in paper-to-aluminium configurations remain limited, so commissioning trials against the user’s own specification are required. For indirect food-contact board structures, the formulated adhesive must satisfy the finished article requirements of 21 CFR 176.170 and 21 CFR 176.180, and the adhesive itself is applied under the conditions of 21 CFR 175.105; European Union converters additionally validate through Regulation (EU) 10/2011 overall migration testing where a plastic layer is present. The major operational failure mode on multi-layer laminators is not cohesive film failure but transfer roll deposit buildup caused by excessive fast-drying at the edges; therefore edge masking of the coating pan and controlling oven exhaust humidity to 15–25% RH at the dry end is often necessary.
In D3 wood adhesive compounding, the usable open time is governed less by the base emulsion minimum film formation temperature than by the humectant dosage and low-shear viscosity profile. VINAVIL EVA 479-RS is typically formulated with 2–4 parts propylene glycol per 100 parts dispersion to retain water in the wet film; an associative polyurethane thickener at 0.3–0.8 parts raises the Brookfield RVT viscosity from 3,000–5,000 mPa·s at 20 rpm spindle 4 to 18,000–30,000 mPa·s, which is the viscosity window for clean roller transfer on a glue spreader. Open time for beech lap-shear specimens at 23°C and 50% RH is typically 5–12 min; extending open time beyond 12 min by increasing propylene glycol above 6 parts creates a measurable D3 wet-shear penalty because residual humectant plasticizes the coalesced ethylene–vinyl acetate network after cold-water immersion. Production compounding is carried out in a low-shear planetary mixer with helical beater at 40–60 rpm and vacuum of 0.6–0.8 bar to remove microfoam before filling drums. Spread rate on softwood or beech edge-glued stock is 80–150 g/m² wet; cold pressing is maintained at 0.5–1.5 MPa for 30–60 min, and bonded assemblies are conditioned at 20–25°C for 24 h before EN 204 D3 water exposure. The D3 classification is not a single-value test; it is a combined dry and cold-water immersion evaluation under EN 204:2016 and EN 205:2016, and batch records must document both the spreader gap and the open assembly time from lay-up to press closing because those variables, not the adhesive composition alone, determine reproducibility.
| Property / test | Standard / method | Equipment / specimen |
|---|---|---|
| Solids content | ISO 3251:2019 | 105°C air-circulating oven, 2 h, 2 g sample |
| Brookfield viscosity | ISO 2555:2018 | Brookfield RVT, spindle 4, 20 rpm |
| pH | ISO 976:2013 | Glass electrode at 20°C |
| D3 wet shear classification | EN 204:2016 / EN 205:2016 | Beech lap-shear 150 mm × 20 mm, conditioning per D3 sequence |
Wet tensile adhesion after water immersion in C2-class polymer-modified cementitious tile adhesives rarely correlates with polymer dry-solids content alone; the film-forming window and the air void fraction of the hardened mortar are equally significant. VINAVIL EVA 479-RS is post-added into a dry blend containing 100 parts CEM I 42.5 R Portland cement, 45–55 parts silica sand with a 0.1–0.5 mm cut, 0.4–0.7 parts cellulose ether, and 0.1–0.3 parts mineral-oil defoamer. The emulsion dosage is generally 3–8 parts as supplied per 100 parts cement, corresponding to approximately 1.5–4.5 parts polymer solids, because overdosing beyond 10 parts aqueous dispersion entrains air and weakens compressive strength. Fresh mortar is adjusted with water to a flow table spread of 140–180 mm after 15 jolts in accordance with EN 1015-3; high-shear mixing in an Eirich-type intensive mixer at 300–400 rpm for 5–6 min under vacuum is preferred to disperse the emulsion into the cement paste without foaming. The VAE colloid stabilizer reacts with multivalent calcium ions in the alkaline pore fluid to produce a controlled paste thickening that improves non-sag behavior on vertical substrates. After troweling with a 6 × 6 mm notched trowel, tensile adhesion is tested following the EN 12004:2017 C2 protocol; the water-immersion sequence uses 7 days immersion at 20 ± 2°C after 28 days standard climate curing. The principal operational boundary is application at low temperature: when substrate temperature falls below 5°C, coalescence of the polymer phase is incomplete, and the polymer contributes plasticizing rather than reinforcing action; wet cure under polyethylene sheet for the first 24 h is also required to prevent film formation on the open mortar surface before hydration is complete.
Tufted carpet precoat formulations based on VINAVIL EVA 479-RS are not simple adhesive dilutions; they are high-solids filled pastes with total solids of 75–82% and calcium carbonate loadings of 200–400 parts per 100 parts dispersion on dry weight. The filler particle size distribution is selected to avoid excessive paste dilatancy under a doctor bar; a D50 between 5–15 μm and a top cut below 45 μm maintain blade-coater stability at machine speeds of 15–35 m/min. Mechanical frothing through an Oakes continuous whipper produces a foam density of 700–900 g/L, which controls coating weight and penetration into the primary tufted backcoating. A froth stabilizer, usually ammonium stearate, is added at 0.5–1.5 parts per 100 parts dispersion to maintain foam cell stability during the 4–8 min residence time in a three-zone oven at 120–160°C. Tuft bind strength is measured according to ASTM D1335-17, and the failure mode is inspected to ensure that the polymer–filler network remains attached to the tuft bundle rather than splitting the secondary backing. The operational boundary is the secondary substrate surface energy: untreated polypropylene secondary backings with surface tension below 31 mN/m require in-line corona pre-treatment; otherwise the precoat penetrates but does not anchor, leading to edge ravel and delamination in cut-and-loop carpet tiles. VINAVIL EVA 479-RS does not introduce plasticizer migration into adjacent polyolefin layers because the ethylene comonomer provides internal flexibilization; this is a key differentiation from homopolymer PVAc precoats in needle-felt and tufted applications where dimensional stability is specified.
In interior flat wall paints moving away from polyvinyl alcohol or solvent-borne systems, the use of VINAVIL EVA 479-RS requires reformulation around a high pigment volume concentration rather than direct binder drop-in. The paint is designed at a PVC of 60–75%, with binder solids at 8–14% of total formulation; titanium dioxide is retained in the 8–12% range only where hiding at high dry-film thickness is not constrained by formulation cost. The grind is carried out on a high-speed disperser with Cowles blade tip speed of 20–25 m/s for 15–20 min, then the emulsion is added in the letdown stage under anchor stirring at 300–500 rpm to avoid shear-induced coagulation. Because the ethylene comonomer reduces minimum film formation temperature, no volatile coalescent is required; the calculated VOC content can be brought below 1 g/L as tested by ASTM D6886 or ASTM D3960. Wet-scrub performance is recorded by ASTM D2486, but published scrub-cycle values specific to VINAVIL EVA 479-RS in a fully formulated paint are limited; laboratory drawdowns are therefore necessary before plant-scale tinting and filling lines are committed. The main operational limitation is block resistance: VAE binders develop surface tack under warm stacking, so the formulation should include 0.5–1.0% of a high-melting polyethylene wax on total weight and the finished paint film should not be applied at surface temperatures below 7°C. In addition, amine-stabilized colorants and ammonia-based pH adjusters should be avoided in the letdown because volatile amine build-up in the can headspace can destabilize the colloidal system over extended storage.
Wet-laid and air-laid nonwoven web manufacturing requires a binder that can be diluted without viscosity collapse, sprayed or foam-applied uniformly, and crosslinked in through-air dryers without blocking on calender rolls. VINAVIL EVA 479-RS is diluted to 5–15% solids with deionized water and applied by a saturation padder or a spray bar to cellulose, polyester, or bicomponent fiber webs at binder add-on levels of 10–30% dry binder on dry web weight, depending on target tensile strength and hand feel. A through-air dryer with air temperature of 120–160°C and residence time of 1–4 min is used; if wet strength is required for wipes or filtration media, 0.5–2.0 parts of a glyoxal-based crosslinker per 100 parts dry binder is post-added to the dilution tank with continuous agitation. Dry and wet tensile properties are evaluated by ISO 9073-3 or ASTM D5035, with wet strength retention typically checked after 30 min water immersion. Binder distribution is checked by iodine staining if starch is present, or by nitrogen content in binder-laden webs. The principal limitation is the inherent hydrophilic character of VAE films; where a hydrophobic nonwoven finish is specified, a subsequent fluorocarbon or wax emulsion treatment is required. For food-contact nonwoven applications, the final article must be assessed under Regulation (EC) No 1935/2004 and applicable national provisions; the binder supplier’s compliance statement must identify residual monomer and coagulant levels because no universal migration standard applies to all nonwoven categories. The same formulation should not be used uncritically for medical nonwovens, where biocompatibility testing under ISO 10993-1 is triggered by the final device classification rather than by the binder alone.
Competitive VINAVIL EVA 479-RS VAE Emulsion prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615380400285 or mail to sales2@liwei-chem.com.
We will respond to you as soon as possible.
Tel: +8615380400285
Email: sales2@liwei-chem.com
Flexible payment, competitive price, premium service - Inquire now!
VINAVIL EVA 479-RS VAE Emulsion is introduced as a polyvinyl alcohol-stabilized aqueous dispersion of a vinyl acetate-ethylene copolymer, supplied with a non-volatile matter content of 55 ± 1 % when tested in accordance with ISO 3251:2019. The dispersion exhibits a pH of 4.0–5.5 by ISO 976:2013, a Brookfield RVT viscosity range of 2500–5000 mPa·s at 20 rpm and 25 °C following ISO 2555:2018, and a minimum film forming temperature of 0 °C under ISO 2115:1996. Industrial use is directed toward adhesive and coating formulations in paper and packaging, wood assembly, textile lamination, and pigmented decorative coatings where ambient-temperature film coalescence must be achieved without external plasticizer addition. The product differs from conventional vinyl acetate homopolymer dispersions by incorporating ethylene directly into the polymer backbone, which reduces the glass transition temperature through internal plasticization rather than through migratory dibutyl phthalate or diisobutyl phthalate plasticizers. In production-scale adhesive mixing, the dispersion can be pumped with progressive cavity or diaphragm pumps; prolonged high-shear circulation through gear-type transfer pumps is generally avoided because it may reduce the colloidal stability envelope.
Replacement of a polyvinyl acetate homopolymer with EVA 479-RS shifts the film formation boundary from a coalescent-dependent regime to an internally plasticized regime. On high-speed packaging lines running folder-gluers at 120–180 m/min, the absence of external plasticizer eliminates the delayed tack development associated with slow plasticizer diffusion into the polymer matrix. The practical consequence is that compression-cycle dwell time can be reduced or held constant while maintaining fiber-tearing adhesion on corrugated stock; adhesion is assessed by ISO 1924-2:2008 tensile testing of the bonded strip or by TAPPI T 821 peel fixtures, depending on the converting specification. In cold warehouses where ambient temperature falls below 12 °C, an unplasticized PVAc dispersion typically requires a coalescent package to avoid brittle adhesive films; EVA 479-RS maintains measurable tack because its MFFT is 0 °C and the dried film retains ethylene-derived segmental mobility. The formulation implication is that defoamer levels, wetting-agent loadings, and viscosity-control additives prepared for homopolymer dispersions usually require re-optimization: the ethylene content reduces the surface energy of the dried film and alters the equilibrium contact angle on clay-coated boards, as measured by ISO 15989:2017 for wetting tension of film surfaces.
Ethylene comonomer units disrupt the regularity of the vinyl acetate backbone, lowering the modulus of the dried latex film and increasing elongation at break relative to polyvinyl acetate homopolymer films. For quality-control laboratories, free-film tensile properties are generated according to ISO 527-3:2018 using type 5 or type 1B specimens conditioned for 24 h at 23 ± 2 °C and 50 ± 5 % relative humidity. Published tensile values for EVA 479-RS in uncompounded form are limited, so specification compliance is generally based on compounded formulation testing rather than dispersion-film data. The internal plasticization mechanism does not volatilize or migrate, which is significant in laminated films intended for indirect food-contact applications where plasticizer migration into dry foodstuffs must be controlled. Extraction testing can be performed under EU Regulation 10/2011 migration protocols, but end-use compliance requires evaluation of the finished package rather than the raw dispersion. The trade-off associated with ethylene internal plasticization is a reduction in cohesive strength at elevated temperature; formulations requiring heat resistance above 70 °C typically incorporate a polymeric isocyanate or other external crosslinker, and the resulting pot-life is monitored by viscosity drift rather than by pH alone because the colloid stabilization can mask early-stage crosslinker interaction.
On wood-focused production lines, EVA 479-RS is typically evaluated in formulations for veneer lamination, edge gluing of softwood and hardwood, and assembly of laminated timber components where the adhesive bond must withstand cold-press cycles. Mixing is carried out with low-speed planetary or anchor agitators at 20–60 rpm to limit foam formation; calcium carbonate fillers of 10–25 wt% are added if rheology adjustment is required, followed by viscosity measurement with a Brookfield viscometer according to ISO 2555:2018. Bond performance is assessed under EN 204:2016 durability classes for non-structural wood adhesives. The thermoplastic dispersion alone typically meets D1 conditions for interior use with moisture content below 15 %; D2 or higher water-resistance classifications require addition of a compatible crosslinker and are validated by the specified soak and boiling cycles of EN 204:2016. Casein or starch extension should be avoided unless compatibility is confirmed because salt sensitivity of the polyvinyl alcohol-stabilized dispersion can produce coagulum. Production experience indicates that batch-to-batch variation in adhesive open time is more influenced by factory temperature and substrate moisture than by the dispersion itself, provided that the solids content is adjusted to the working range of 50–55 %.
Formulations serving indoor environments increasingly require low volatile organic compound emissions and freedom from phthalate plasticizers. VINAVIL EVA 479-RS is positioned for these systems because the film-forming function is achieved through ethylene comonomer content rather than through 2–10 phr of dibutyl phthalate or benzyl butyl phthalate, which are subject to authorization and restriction under REACH Annex XVII and may require specific migration testing under EU Regulation 10/2011. The aqueous dispersion contributes a low residual free monomer level; industrial practice monitors vinyl acetate monomer by headspace gas chromatography using ISO 13773:1999, and formulators generally specify a residual monomer ceiling of 0.1 % for sensitive applications, although the relevant technical data sheet value should be confirmed for the specific batch. Low-VOC compliance is not an intrinsic property of the dispersion alone; finished formulation emissions are measured according to ISO 16000-6:2021 or chamber methods such as EN 16516:2017 and depend on defoamers, coalescents, and preservatives added by the downstream compounder. The product is supplied as an aqueous dispersion and should be stored above 5 °C to avoid freezing; because it is polyvinyl alcohol-stabilized, repeated freeze-thaw cycling is not recommended and may produce irreversible grit formation. Conservative storage practice keeps containers sealed to reduce skin formation, and material transferred to day tanks should be filtered through a 100–150 μm screen before roll coating.
| Dispersion parameter | Typical range | Test method |
|---|---|---|
| Non-volatile matter | 55 ± 1 % | ISO 3251:2019 |
| pH | 4.0–5.5 | ISO 976:2013 |
| Brookfield RVT viscosity, 20 rpm, 25 °C | 2500–5000 mPa·s | ISO 2555:2018 |
| Minimum film forming temperature | 0 °C | ISO 2115:1996 |
| Density at 23 °C | 1.07 g/cm³ | ISO 2811-1:2023 |
Paper saturation and coating trials with EVA 479-RS use engraved rod or gravure coating heads; the dispersion is diluted with demineralized water to 20–35 % solids and applied at coat weights of 8–20 g/m² dry depending on end-use porosity. Drying is performed in hot-air tunnel or infrared-assisted dryers with web surface temperatures held at 90–110 °C for 30–60 s; lower-temperature profiles may be used when the substrate is heat-sensitive, but insufficient film coalescence will produce a hazy, weak surface. The PVA-stabilized polymer surface provides oil and grease resistance in saturated paper; barrier performance is measured by Cobb water absorption according to ISO 535:2023 and by oil penetration tests such as TAPPI T 559. On high-speed paper carriers, the dispersion exhibits the expected shear-thinning response; however, single-point Brookfield viscosity does not fully predict roll-transfer behavior at coating speeds above 100 m/min. A high-shear viscometer or capillary rheometer operating at 10 000 s⁻¹ is used to determine the apparent viscosity relevant to metering rod zones. Foam generation during recirculation is controlled with mineral-oil or silicone defoamers at 0.1–0.3 % on total formulation; overdose of silicone defoamer can produce fisheyes in transparent film applications.
Viscosity recovery after shear is a more sensitive process variable for EVA 479-RS than the initial Brookfield value. On roll coaters with chrome-plated steel rolls, a formulation entering the nip at 2500–5000 mPa·s may be sheared to 200–800 mPa·s at application speed, and the time needed to rebuild viscosity determines whether the transferred film remains uniform or flows into the valleys of the substrate. For this reason, converting trials often include a three-stage rheometer test: low shear at 1 s⁻¹, high shear at 1000 s⁻¹ for 60 s, and recovery at 1 s⁻¹ for 120 s. The polyvinyl alcohol stabilization provides a structured colloid network that rebuilds after high-shear disruption; formulators monitoring batch-to-batch consistency use the ratio of recovered viscosity to initial viscosity as an inbound quality indicator. On gravure lines where the coating is doctored at low coat weights, excessive structure can lead to ribbing or splitting at the doctoring blade; adjustment of dilution water and addition of a polyurethane or acrylic thickener in the 0.05–0.2 % range modifies the high-shear response. Equipment at pilot scale should include a positive-displacement pump with variable frequency drive, a return line with submerged entry to prevent air entrainment, and a magnetic flowmeter to maintain coat-weight repeatability. Published production data for this specific grade on eight-colour central-impression presses is limited, so initial trials are normally designed as a factorial over coat weight and drying temperature using a representative production substrate.
Compatibility with co-binders and additives is pH- and ion-sensitive because the polymer is stabilized with polyvinyl alcohol. Acidic additives that depress pH below 3.5 can destabilize the dispersion, while highly alkaline additions above 9.0 may increase viscosity and accelerate hydrolysis of vinyl acetate units. Solvent addition is generally unnecessary; if coalescing solvents are introduced for specific substrate penetration, quantities above 5 % of polymer solids should be pre-tested for shock stability. Borated or aluminum-containing rheology modifiers interact strongly with the PVA stabilizer and can create irreversible gels; this incompatibility is evaluated by mixing plant-scale batches at 100 kg or larger before full production. Zinc oxide and certain reactive pigments may sequester acetate groups and produce grittiness, so dispersion is checked through a 75 μm Hegman grind gauge or filter test after compounding. If the emulsion is accidentally frozen, the coagulum cannot be fully redispersed by agitation, and the thawed material should not be returned to the main storage tank without filtration. Because the polymer is thermoplastic, cured adhesive films soften at elevated temperature; applications requiring sustained thermal resistance above 80 °C require crosslinker systems and post-cure validation by elevated-temperature shear testing, for example EN 14257:2019 for heat resistance of wood adhesives.
