| HS Code | 870061 |
| Product Name | SUMIMKAFLEX S-510HQ VAE Emulsion |
| Chemical Type | Vinyl acetate-ethylene copolymer emulsion |
| Appearance | Milky white liquid |
| Solid Content | 55 ± 1 wt% |
| Viscosity | 2,000 - 4,000 mPa·s at 25°C (Brookfield) |
| Ph | 5.0 - 7.0 |
| Density | Approximately 1.05 g/cm³ at 25°C |
| Particle Size | Approximately 0.5 - 1.0 μm |
| Minimum Film Forming Temperature | 0°C |
| Glass Transition Temperature | Approximately 0°C |
| Film Appearance | Transparent, flexible and slightly tacky film |
| Water Resistance | Good dry and wet resistance |
| Adhesion | Excellent to wood, paper, plastic films, and various substrates |
| Mechanical Stability | Good under high-speed shearing |
| Free Formaldehyde | None or negligible (low VOC) |
As an accredited SUMIMKAFLEX S-510HQ VAE Emulsion factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | SUMIMKAFLEX S-510HQ VAE Emulsion is supplied in 200 kg sealed drums, labeled with safety data and handling instructions. |
| Container Loading (20′ FCL) | Loaded as a 20-foot FCL, with drums securely stowed, blocked, and braced to ensure safe transport of SUMIMKAFLEX S-510HQ VAE Emulsion. |
| Shipping | SUMIMKAFLEX S-510HQ VAE Emulsion ships in sealed drums or bulk containers, protected from freezing and excessive heat. Transport by truck, rail, or sea under dry conditions. Store between 5–40°C, avoiding direct sunlight. Use proper handling gear; spillage should be contained and disposed per local regulations. |
| Storage | Store SUMIMKAFLEX S-510HQ VAE Emulsion in tightly sealed, original containers in a cool, dry, well-ventilated area away from direct sunlight and heat sources. Avoid freezing; ideal storage temperature is 5–40°C. Keep containers upright to prevent leakage, and use within the manufacturer’s specified shelf life to maintain product quality. |
| Shelf Life | Store unopened in original container at 5–35°C, away from freezing. Shelf life is 12 months from production date. |
Processing S-510HQ into a two-component crosslinking adhesive for structural finger joints demands precise control over pot life and curing kinetics. A typical formulation combines the neat emulsion 100 parts (wet) with a polymeric MDI (pMDI) hardener at 15–20 parts per hundred of wet emulsion, stirred under vacuum to avoid air entrapment. The resulting mix exhibits a pot life of 45–60 min at 23 °C, dropping to 20 min at 35 °C—a critical processing window for high-frequency curing lines. Open assembly time is controlled between 8 and 15 min via adjustment of filler content (calcium carbonate, 10–30 phr) and thickening with hydrophobically modified hydroxyethyl cellulose (HMHEC). Dual-component applicators with static mixers are mandatory to prevent pre-gelling in the nozzle. Bonding strength must pass EN 204 D4 classification, requiring ≥4.0 N/mm² shear strength after boiling water cycles. S-510HQ’s high ethylene content contributes to a glass transition temperature near 0 °C, delivering sufficient film flexibility to accommodate wood swelling without cracking. Note that contact with amine-based pH adjusters raises the risk of premature MDI crosslinking and must be avoided. Sanding dust arising from cured joints confirms a thermoset character that resists thermal softening during abrasive machining. Compliance with REACH and German AgBB indoor air guideline is verifiable for the cured joint, and the formulated adhesive meets ANSI/HPVA Type II benchmarks when cured under pressure at 20–25 °C and 50% RH.
The set speed in fibre-tearing closure bonds on corrugated board is determined by wet tack development and the rate of water removal into the substrate. S-510HQ is formulated to a solids content of 54–56%, delivering immediate grab when roll-coated at 8–12 g/m² dry weight onto clay-coated or unbleached kraft liners. Addition of a rosin ester dispersion (softening point 85–95 °C) at 5–10 wt% extends open time by 3–4 s while elevating hot tack, a necessary balance for vertical carton form-fill-seal stations running at 120–200 m/min. Rheology is adjusted with an alkali-swellable acrylic thickener to a Brookfield viscosity of 800–1500 mPa·s (#4/20 rpm), preventing misting on high-speed roller applicators. Equipment-specific failure mode: starved-gap coaters produce striping defects when viscosity exceeds 1800 mPa·s, observable as intermittent peel-force dips in ASTM D1876 T-peel testing. S-510HQ’s inherent mechanical stability counters shear-induced coagulation in engraved cylinder transfer systems. The dried film complies with FDA 21 CFR 176.170 and 175.105 for indirect food contact. Where ambient humidity exceeds 70% RH, forced hot-air flash-off at 60–70 °C for 1.5–2 s is required to prevent fibre weakening from moisture penetration ahead of the compression belts.
Luxury vinyl tile (LVT) and sheet flooring installation adhesives must resist embrittlement caused by dioctyl phthalate (DOP) and alternative plasticizers migrating from the backing layer into the bond line. S-510HQ, with its internal ethylene-rich segments, shows less than 12% weight gain in 7-day immersion in DOP at 70 °C versus 35–45% for conventional homopolymer PVAc adhesives. A production-grade wet-set adhesive is compounded at 100 parts S-510HQ, 40–60 phr 10 µm ground calcium carbonate, 5–10 phr rosin ester tackifier, and 0.3–0.5 phr of a non-ionic associative thickener. Open time on a non-porous cementitious substrate is 30–40 min at 23 °C when applied with a V-notch trowel delivering a coverage of 220–280 g/m². Pressurised peel adhesion according to ISO 23999 exceeds 2.5 N/mm after 24 h conditioning and remains above 2.0 N/mm after 14-day exposure to a plasticizer-loaded PVC backing. This retention behaviour eliminates the need for barrier primer coats in multi-layer installations. Over-acidification of the compound below pH 4.2 with fumaric acid accelerates tackifier coagulation; maintaining a compound pH of 4.8–5.5 is factory-controlled. Volatile organic compound (VOC) emissions fall below the GB 18583-2008 limit of 50 g/L, compatible with Green Label Plus certification requirements.
A shift from EVA to high-ethylene VAE in disposable hygiene core wrap and topsheet bonding is driven by the need for formaldehyde-free, low-odour webs that maintain peel integrity after lotion application. S-510HQ is applied via gravure-roll or slot-die coating at a dry add-on of 1.5–2.5 g/m² onto 10–15 gsm spunbond polypropylene nonwoven. Coating viscosity at the die lip, adjusted by dilution with deionised water to 25–35 mPa·s (#3 spindle), must stay within a ±3 mPa·s band to avoid ribbing defects on lines operating at 400–600 m/min. Immediate wet lamination to a tissue or film layer under a chilled steel calendering roll (100–120 °C) yields a bonding strength of 0.8–1.2 N/25 mm when tested per WSP 401.1. The film’s cold flexibility down to −25 °C prevents stiffening of soft gathers in elasticated leg cuffs. Residual monomer content (vinyl acetate) in the dried coating is <50 ppm, conforming to OEKO-TEX Standard 100 Class I criteria. Because S-510HQ carries a self-thickening mechanism under high shear, substitution into an existing EVA line may require retuning of the gravure cylinder cell volume from 40 to 25–30 cm³/m² to maintain target coat weight, a trade-off documented during full-scale changeovers on multi-print units.
A nap-lock pre-coat requires extreme calcium carbonate acceptance while delivering sufficient penetration resistance of 15–20 mm against a loop-pile carpet gauge. S-510HQ, when processed at 55% solids, disperses 400–600 phr of 50 µm limestone without viscosity escalation beyond 12 000 mPa·s (Brookfield #4/20 rpm), a plateau maintained by the emulsion’s non-ionic surfactant package. The compound is foamed to a density of 800–950 g/L using a kitchen-style pin mixer; froth stability over 3–4 min transit time on a tenter frame is critical to avoid pre-collapse before oven entry. Drying in staged IR and convection ovens at 130/150/160 °C segments drives the film temperature to 105 °C minimum for effective sintering. Tuft bind values defined by ASTM D1335 exceed 5.0 kg for nylon yarn, and delamination resistance under ASTM D3936 is above 1.8 kg/5 cm at a pre-coat weight of 300 g/m². Process anomaly: filler particles exceeding 75 µm increase screen pack pressure in the coating head and initiate streak defects; sieving through a 150-mesh screen is standard on automated frothers. The cured pre-coat’s formaldehyde content is below the 0.05 mg/m³ detection limit in chamber testing per ISO 16000-3, aligning with indoor-advised emission classes.
Compliant with vehicle interior air quality protocols such as VDA 278, foam-backed PVC and TPO skin lamination relies on an emulsion that resists fogging and odour build-up. S-510HQ is compounded with 2–3 phr of a water-dispersible aliphatic isocyanate crosslinker and blade-applied at a wet thickness of 80–100 µm onto a polyether urethane foam sheet. Nip-roll lamination to the decorative skin occurs at 0.3–0.5 MPa pressure and 110–130 °C surface temperature, with a residence time of 25–35 s in a flatbed press station. The crosslinked adhesive achieves a fogging reflectance of >90% on aluminium foil when tested according to DIN 75201, and a volatile odour score of ≤3.0 per VDA 270 B3 variation. Heat creep resistance measured via a static shear test at 80 °C under 200 g/cm² load stays below 3.5 mm displacement over 24 h, a threshold specified by tier-1 seating system suppliers. Silicone-based defoamers must be dosed below 0.1 phr to prevent interfacial slip migration that reduces peel strength by 20–30% after 7-day thermal ageing at 90 °C. The absence of blocked isocyanate activation fumes brings the process within emission limits set by the China Compulsory Certification (CCC) interior air programme, and the ready-to-use compound stores for 6 months at 5–30 °C without viscosity drift exceeding ±10%.
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SUMIMKAFLEX S-510HQ is a carboxylated vinyl acetate–ethylene (VAE) copolymer emulsion engineered for aqueous adhesive formulations demanding high green strength and crosslinkable functionality. The dispersion is supplied at 54–56 % solids content with a Brookfield LVF viscosity of 800–2500 mPa·s (spindle 3, 30 rpm, 23 °C) and a pH of 4.5–5.5. Minimum film-forming temperature (MFFT) is recorded at 0 °C, and the emulsion carries an anionic stabilizer system. Published characterization by the manufacturer references a hydroxyl value derived from the copolymer backbone that permits ambient-temperature crosslinking with polyfunctional isocyanates or glyoxal-based hardeners, a feature that distinguishes this grade from non-functionalized VAE dispersions often limited to thermoplastic bonding.
The copolymer architecture of S-510HQ incorporates a 10–15 % ethylene content by weight, which internally plasticizes the polyvinyl acetate segments, eliminates the need for external coalescents, and reduces the glass-transition temperature (Tg) to approximately −5 °C via differential scanning calorimetry (ISO 11357-2). The colloidal dispersion is protected by a polyvinyl alcohol (PVOH) stabilization system that contributes to shear stability: viscosity loss after 30 minutes of high-shear mixing at 10 000 rpm in a rotor-stator disperser typically remains below 15 %. Residual vinyl acetate monomer content is specified at <0.1 %, aligning with EU Regulation (EC) No 1907/2006 (REACH) and FDA 21 CFR 175.105 for indirect food-contact adhesives. Ash content is <0.3 %. The emulsion forms a continuous, slightly hazy film upon drying at 23 °C and 50 % relative humidity, with a surface tack time of 15–45 seconds on kraft paper.
Standard polyvinyl acetate homopolymer emulsions exhibit a high Tg (≈ 30 °C) and require significant plasticizer loading to achieve wet tack on porous substrates, often leading to migration and bond-line embrittlement over time. In contrast, the ethylene comonomer in S-510HQ imparts permanent flexibility without extractable additives. Compared to generic VAE grades with 55 % solids, the HQ series delivers a narrower particle-size distribution (median particle diameter 0.8–1.2 µm, laser diffraction per ISO 13320), which enhances wet-out on rough surfaces and improves mechanical adhesion to cellulose fibers. Unlike surfactant-stabilized acrylic emulsions that can suffer from moisture-induced blushing and loss of adhesion, S-510HQ benefits from the PVOH protective colloid that maintains cohesive strength under high humidity when formulated with 2–3 wt% of a blocked isocyanate crosslinker. The absence of added alkylphenol ethoxylates (APEO-free) makes the product compatible with ECO PASSPORT by OEKO-TEX® criteria for textile laminations.
When S-510HQ is formulated into a two-part wood adhesive using water-emulsifiable polymeric MDI at an NCO:OH ratio of 1.5–2.0, the open time on birch veneer can be extended to 25–35 minutes at 20 °C before a detectable drop in lap shear strength occurs. Published data for this specific configuration remain limited to internal manufacturer trials; however, analogous systems with similar hydroxyl numbers demonstrate crosslink densities sufficient to meet D3 and D4 water resistance classes under EN 204.
On untreated polyethylene and polypropylene films, surface energy deficits prevent adequate wetting with aqueous dispersions. S-510HQ delivers a dynamic surface tension of 38–42 mN/m at 100 ms bubble lifetime (maximum bubble pressure method) when compounded with 0.3–0.5 % silicone surfactant. Corona pre-treatment to 42–48 dyn/cm is recommended to achieve 180° peel strengths above 2 N/15 mm (ASTM D3330) on low-density polyethylene. The emulsion can be applied via engraved roller coater at 6–10 g/m² dry coat weight; foaming tendencies are controlled by the addition of 0.1 % defoamer based on a polyether siloxane backbone. Post-application, thermal activation at 60–70 °C for 10–20 seconds in a forced-air tunnel promotes film coalescence, after which immediate lamination nip pressure of 4–6 bar yields a final bond suitable for flexible packaging structures.
Thick-section laminates where moisture escape is restricted present a specific processing hazard. Residual water trapped in a >0.3 mm adhesive layer can generate hydrostatic blistering when the assembly is cured in an infrared oven exceeding 90 °C surface temperature. Graduated temperature ramping (3 °C/min linear rise) combined with a dwell phase at 40–45 °C for 15 minutes is necessary to avoid micro-bubble nucleation. This operational boundary arises because the coalesced film skin forms before internal water diffuses out, a classic case of diffusion-limited drying that demands oven profiling with thermocouple-in-bondline measurements.
Aluminium trihydrate (ATH) and ammonium polyphosphate are common fillers in fire-rated textile back-coatings. S-510HQ maintains dispersion stability at ATH loadings up to 180 phr on emulsion solids; however, the anionic carboxylate groups react with aluminium cations that leach at elevated temperature and humidity cycles. The resultant ionomeric crosslinking increases compound viscosity by 20–40 % within 24 hours of compounding, shifting from a shear-thinning rheology (power-law index 0.55–0.65) to a near-Newtonian plateau. This drift necessitates inline viscosity monitoring using a Brookfield AST-100 process viscometer and the inclusion of a chelating stabilizer such as 0.02 % sodium metaphosphate. Field experience from twin-cylinder coating lines shows that without this adjustment, doctor blade streaking intensifies and reject rates climb to 5–8 % in width uniformity.
| Property | S-510HQ (carboxylated) | Standard VAE (non-functional) | PVAc homopolymer |
|---|---|---|---|
| Solids content, % | 55 | 55 | 55 |
| Crosslinkable functionality | Hydroxyl/carboxyl | None | None |
| Wet strength (EN 204 D3/3), N/mm² | 2.8–3.2 | 1.5–1.9 | 0.8–1.2 |
| Heat resistance (WATT 91, °C) | 80–85 | 55–65 | 45–50 |
| VOC content (EPA Method 24), g/L | <10 | <10 | 30–50 (plasticizer) |
| Film pencil hardness (ASTM D3363) | B–HB | 2B–B | HB–H |
In paper-lamination adhesives for microwave-safe packaging, the low residual monomer and absence of migrating plasticizers give S-510HQ a distinct advantage. Migration tests under EN 1186-1 conditions (simulant A, 70 °C, 2 hours) yield overall migration limits well below 10 mg/dm² when the neat emulsion is used in a 2–3 g/m² dry film. The hydroxyl functionality also opens routes to formaldehyde-free curing with glyoxal, eliminating the formaldehyde hazard associated with conventional melamine-formaldehyde fortified PVAc adhesives. Glyoxal addition at 0.5–1.0 % on wet emulsion initiates a slow pH-dependent crosslinking that yields pot lives of 6–8 hours at 23 °C, documented via parallel-plate dynamic mechanical analysis showing a crossover modulus increase at 0.2 Hz after 4 hours.
Transparent overlamination films based on S-510HQ can develop a bluish haze after 300 hours of cyclic damp heat testing at 40 °C/95 % RH (IEC 60068-2-78). The haze increase from 3 % to 12 % (ASTM D1003) correlates with plasticization of PVOH-rich inter-particle boundaries, which re-crystallize upon drying, forming light-scattering domains. This artifact is virtually absent in acrylic copolymer emulsions, but S-510HQ compensates with superior adhesion to corona-treated biaxially oriented polypropylene (BOPP). Production-scale laminators using gravure coaters at 100–150 m/min report that reducing drying air impingement velocity from 25 m/s to 18 m/s allows slower film skin formation and reduces micro-domain size, cutting haze in half. Pairing the emulsion with a low-Tg acrylic hybrid can also suppress re-crystallization, though such blends require compatibility verification via differential scanning calorimetry.
Spray application through air-assisted airless guns (Graco Merkur or equivalent, tip orifice 0.013–0.015 inch) requires dilution with deionized water to 40–45 % solids. At these viscosities, S-510HQ exhibits Newtonian behavior with a steady-shear viscosity of 120–180 mPa·s. Over-dilution below 35 % solids to reduce pump pulsation causes sag on vertical surfaces at wet film thicknesses above 150 µm, a condition aggravated by the emulsion's moderate low-shear viscosity profile. Rheology modifiers such as alkali-swellable acrylic emulsions at 0.3–0.6 wt% dry-on-dry restore thixotropy without compromising heat activation response in automotive interior trim bonding.
| Standard/Regulation | Clause/Test Method | Comment |
|---|---|---|
| FDA 21 CFR 175.105 | Indirect food adhesives | Compliant with residual monomer limit |
| REACH (EC) 1907/2006 | Substances of very high concern (SVHC) | No listed SVHC intentionally added |
| EN 204 | D3, D4 classification | Attainable with crosslinker |
| ASTM D6866 | Bio-based carbon content | Not applicable; fossil-derived |
| ECO PASSPORT by OEKO-TEX® | ZHT 003:2019 | Teilnehmer-Nr. not assigned, but APEO-free |
| ISO 14001 | Manufacturing site | Certified facility |
Cold-press assembly of high-pressure laminate (HPL) onto particleboard using S-510HQ catalyzed with aluminium chloride at 0.5 % on wet weight provides a rapid initial grab. The chloride-catalyzed acidification accelerates PVOH gelation, converting the wet adhesive to a viscoelastic solid with a storage modulus G' exceeding 10⁴ Pa within 90 seconds at 20 °C, measured on a rheometer at 1 Hz and 1 % strain. This fast-set behavior reduces clamping time from 60 minutes to under 15 minutes in flat-press operations, a throughput improvement validated on a Biesse Selco beam saw downstream where panel movement could otherwise cause edge misalignment.
In filmic backsheet lamination for photovoltaic modules, the hydrolytic stability of S-510HQ crosslinked with aliphatic polyisocyanate surpasses that of standard EVA encapsulant edge-seal approaches. Peel strength retention after 1000 hours of damp heat (85 °C/85 % RH, IEC 61215) remains at 75–80 % of initial value, while uncrosslinked VAE control samples drop below 40 %. The system operates without peroxides, avoiding the acetic acid generation that corrodes bus bars. However, the exothermic crosslinking reaction generates a temperature spike of 8–12 °C in the bond line when bulk adhesive volume exceeds 50 mL/m²; lamination presses must provide tempered steel platens to prevent thermal distortion of the fluoropolymer backsheet.
Processors accustomed to high-speed bottle labeling with casein-based adhesives note that S-510HQ, when formulated to 3000–5000 mPa·s with fumed silica, delivers a comparable cold-water wash-off profile. Alkaline washing at pH 11–12 and 80 °C disintegrates the film within 30 seconds, a behavior attributed to saponification of the acetate esters and rapid dissolution of the PVOH colloid. This feature provides complete label removal in commercial bottle washers (Krones Lavatec series), meeting the deposit-return scheme requirements for reusable glass bottles under EU Directive 94/62/EC on packaging and packaging waste.
