| HS Code | 512084 |
| Product Name | Vinavil 2160L |
| Chemical Family | Vinyl Acetate-Ethylene (VAE) Copolymer Dispersion |
| Appearance | White milky liquid |
| Solid Content | 54 - 56 % |
| Viscosity | 3000 - 6000 mPa·s (Brookfield) |
| Ph | 4.0 - 5.5 |
| Density | 1.06 - 1.08 g/cm³ |
| Glass Transition Temperature Tg | About -5 °C |
| Minimum Film Forming Temperature Mfft | About 0 °C |
| Particle Size | 0.5 - 2.0 µm |
| Film Appearance | Flexible and transparent |
As an accredited Vinavil 2160L factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Vinavil 2160L is packaged in 25 kg pails, 200 kg drums, or 1000 kg intermediate bulk containers. |
| Container Loading (20′ FCL) | 20′ FCL loading of Vinavil 2160L: chemical drums/pails palletized and secured, meeting weight limits for safe transport. |
| Shipping | Vinavil 2160L is shipped in sealed drums, IBC totes, or bulk tankers. It should be kept frost-free, between 5–40°C, protected from freezing and contamination. Ensure containers remain upright and well-ventilated, away from heat sources. Non-hazardous per regulations, but standard PPE and spill containment are recommended during transport. |
| Storage | Store Vinavil 2160L in its original, tightly sealed containers in a cool, dry, well-ventilated area. Avoid direct sunlight, heat sources, and freezing—keep temperatures above 5°C. Protect from moisture and contamination. Keep containers upright and away from incompatible materials. Under proper conditions, shelf life is typically 12 months from production. Always check product technical data sheet. |
| Shelf Life | Shelf life is 12 months from production date when stored in original, unopened containers at recommended temperatures, protected from frost. |
Vinyl acetate homopolymer dispersion Vinavil 2160L functions as the primary binder in cold-press and clamp-carrier wood lamination when the wet film must transfer to hardwood and softwood capillaries without causing spring-back in the assembled stack. A starting formulation for beech and oak furniture panels uses 100 parts by weight Vinavil 2160L, 3–6 parts non-phthalate plasticizer, 0.2–0.5 parts defoamer, and 1–2 parts water when plant temperature exceeds 28 °C. Spread control is maintained at 120–180 g/m² per face with a glue spreader or rubber applicator roll. At 20–25 °C and 50–60 % RH, the open time before fibre drag drops below the minimum acceptable level is 5–8 min; beyond that the film skins over and ash fibre tear falls below the 50 % threshold required for panel lay-up. Assembly is pressed in a hydraulic cold press at 0.6–1.0 MPa for 20–40 min. Under EN 204:2016, the unhardened compound typically achieves D2, whereas D3 wet-service classification is obtained only after adding 4–6 parts of an acidic metal-salt hardener per 100 parts dispersion immediately before use. The catalyzed mix has a pot life of 45–60 min at 20 °C; batch sizes above 200 kg are not recommended in non-refrigerated mixing vessels because the accelerating pH shift produces an irreversible viscosity climb. Tensile shear strength of bonded beech, measured in accordance with EN 205:2016, should exceed 10 N/mm² for dry bond; D3 wet-conditioned values are typically above 2 N/mm² after the specified soak cycle. End products include laminated solid-wood panels, edge-glued furniture components, and window scantlings.
| Parameter | D2 unhardened | D3 catalyzed |
|---|---|---|
| Vinavil 2160L (parts by weight) | 100 | 100 |
| Non-phthalate plasticizer (parts) | 3–6 | 3–6 |
| Acidic metal-salt hardener (parts) | 0 | 4–6 |
| Spread rate (g/m² per face) | 120–180 | 120–180 |
| Press specific pressure (MPa) | 0.6–1.0 | 0.6–1.0 |
| Pot life at 20 °C (min) | not limited by hardener | 45–60 |
In radio-frequency edge pressing of decorative veneer or solid-wood edging onto MDF panels, Vinavil 2160L is processed at 100 parts without intentional water addition because the RF field couples with residual water in the adhesive line. The dispersion’s reported minimum film-forming temperature near 18 °C is not the controlling parameter; the critical variable is the moisture content of the board and adhesive. Boards conditioned below 8 % moisture lose water too rapidly from the bondline under RF, causing impedance instability in the generator and dielectric undercoupling that leaves undercured spots. Above 12 % board moisture, the adhesive line overheats and steam blisters form along the joint. Industrial RF presses operating at 27.12 MHz with hydraulic clamping at 0.3–0.5 MPa typically cure a 0.15–0.25 mm adhesive layer at 1.5–3 s/mm of line thickness. Plasticizer is reduced to 2–4 parts per 100 parts dispersion to minimize migration into the MDF surface; higher addition produces polymer softening at the joint interface and lowers heat resistance above 50 °C. The edge-banding machine applies the adhesive to melamine edge tape or solid-wood edging, and the final boards are converted into office furniture and kitchen cabinet doors. Published machine-power curves for Vinavil 2160L under RF cure are limited, so line validation requires destructively testing edge bonds for fibre pull at 60 °C after conditioning at 80 % RH for 24 h.
Spiral tube winding lines using medium-viscosity PVAc dispersions demand a binder that maintains a stable doctor-roll film at line speeds above 80 m/min. Vinavil 2160L is converted by adding 5–10 parts water per 100 parts dispersion and 8–12 parts phthalate-free ester plasticizer such as triacetin. The target application viscosity is 1800–2500 mPa·s at 25 °C when measured in accordance with ISO 2555 using a Brookfield RVT spindle 5 at 20 rpm. The adhesive is transferred to the kraft ply by a chrome-plated doctor roll running at a surface-speed ratio of 1:0.85 relative to the paper web; ratios above 1:0.9 induce sling and uneven edge penetration. Wet film pickup per ply is maintained between 12 g/m² and 16 g/m². Recirculation screens of 125 µm are installed in the return line to remove paper dust and coarse coagulum. The wound core must achieve a flat crush strength above 0.6 MPa when tested in accordance with ISO 11093-9; cores used for adhesive tape and stretch film should show no delamination after 24 h at 40 °C and 80 % RH. For cores that may contact food through paper overwrap, the formulated adhesive must comply with FDA 21 CFR 175.105. pH adjustment with alkaline buffers must be avoided; above pH 6.5 the dispersion flocculates and deposits hard sediment in the return pan and doctor-roll fountain. End products include paper cores, composite cans, and textile yarn carriers.
After milling and stacking the book block, Vinavil 2160L is compounded with 10–15 parts phthalate-free plasticizer and 2–4 parts water to a viscosity of 2000–3000 mPa·s at 25 °C before being charged to the spine-glue tank. The adhesive is applied by a rotating spine wheel to the milled book block at a wet film thickness of 0.15–0.25 mm; after cover application, the book is nipped at 0.4–0.8 MPa for 4–8 s. Destructive testing is delayed for 24 h at 23 °C and 50 % RH because the PVAc film surfaces dry quickly but full cohesive strength develops only as water migrates into the paper. Page-pull testing on 80 gsm uncoated paper using a tensile tester at 50 mm/min should yield values above 5 N/cm; testing after 1 h would understate performance, with values typically below 2 N/cm. For children’s books sold in the EU, the dried adhesive is assessed against the migration limits in EN 71-3:2019+A1:2021; the dispersion contains no intentionally added lead, cadmium, arsenic, or mercury, but the final laminate is still lot-verified. The main machine bottleneck is heat build-up in the spine-glue wheel; above 35 °C the viscosity drops below target and the adhesive penetrates the paper, reducing page-pull after trimming. End products include perfect-bound catalogues, softcover manuals, and tear-off notepads.
For folding-carton side seams produced on high-speed folder-gluers, Vinavil 2160L acts as the primary binder only when the film develops fibre tear on clay-coated solid bleached sulphate board before the carton reaches the compression belt. A side-seam compound is prepared from 100 parts Vinavil 2160L, 5–8 parts plasticizer, and 0.3–0.6 parts defoamer; application viscosity is kept between 1200 mPa·s and 1800 mPa·s at 25 °C. Folder-gluers running at 120–180 m/min require the adhesive to wet the folded side seam within 0.5–1.0 s; initial grab is sufficient only when the board surface energy exceeds 38 mN/m measured by dynes. The completed side seam must exhibit fibre tear above 70 % after 24 h at 23 °C and 50 % RH on clay-coated SBS board. For dry and fatty food cartons, the formulated adhesive is selected to comply with FDA 21 CFR 175.105 as an indirect food-contact adhesive, and for EU use with Regulation (EU) No 10/2011 when the adhesive is separated from food by a functional barrier. REACH Annex XVII phthalate limits and residual monomer content must be verified; published migration data for Vinavil 2160L in side-seam formulations is limited, so each converted lot is extraction-tested when no functional barrier is present. Below 12 °C the side-seam film cannot coalesce rapidly enough on high-speed lines, and above 30 °C the low viscosity causes squeeze-out that contaminates the compression belt. End products include cereal cartons, frozen-food sleeves, and pharmaceutical outer packaging.
| Application | Standard or regulation | Verification point |
|---|---|---|
| Cold-press wood lamination | EN 204:2016 | D3 wet-service classification |
| Paper core winding | FDA 21 CFR 175.105 | Indirect food-contact adhesive status |
| Bookbinding | EN 71-3:2019+A1:2021 | Heavy-metal migration from finished book |
| Carton side-seam | Regulation (EU) No 10/2011 | Migration test when no functional barrier |
| Paper-to-greyboard lamination | EN 71-3:2019+A1:2021 | Migration from finished laminate |
Lamination of printed paper to greyboard for game boards and hardcover covers uses Vinavil 2160L as a wet-bonding adhesive where the paper sheet must lie flat after drying without curl. The formulation is filled more heavily than wood or bookbinding compounds: 100 parts dispersion, 10–20 parts calcium carbonate with a D50 between 5 µm and 10 µm measured by laser diffraction in accordance with ISO 13320, 2–4 parts plasticizer, and 0.1–0.3 parts preservative. The compound is applied by roller coater at 30–50 g/m² on the board side and immediately nipped with the printed paper at 0.5–0.8 MPa line pressure. Water addition is limited to 3 parts per 100 parts dispersion to control paper expansion; the laminate is stacked under weight for 2–4 h at 20–25 °C. The dry laminate should show no blistering after 48 h at 40 °C and 60 % RH in a heat-aging cabinet; published data for this specific dispersion in greyboard lamination is limited. For game boards intended for children, the entire finished laminate is assessed under EN 71-3:2019+A1:2021 for heavy-metal migration, and the adhesive is chosen to avoid adding extractable metals above the limit. End products include rigid game boards, hardcover cases, and presentation folders.
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Vinavil 2160L is a surfactant-stabilized aqueous dispersion of vinyl acetate homopolymer. The product is supplied without external plasticizer, organic co-solvent, or formaldehyde-releasing preservative, and it is designed for formulation into one-part woodworking adhesives, paper converting compounds, and packaging laminations. The anionic emulsifier system produces a milk-white liquid with a lower-micrometer particle size distribution. The high polymer content and pseudoplastic flow distinguish the grade from low-solids general-purpose PVAc dispersions, while the homopolymer backbone distinguishes it from vinyl acetate-ethylene copolymers. The following table lists representative physicochemical parameters reported for the product; these are typical values, not batch specifications, and lot-specific certificates of analysis govern commercial use.
| Parameter | Test method | Representative value or range |
|---|---|---|
| Non-volatile content | ISO 3251:2019 | 60 ± 1 % |
| Apparent viscosity, Brookfield RVT spindle 6, 20 rpm, 25 °C | ISO 2555:2018 | 4000–8000 mPa·s |
| pH, as supplied | ISO 976:2013 | 4.5–6.0 |
| Density at 23 °C | ISO 2811-1:2016 | 1.07–1.09 g/cm³ |
| Minimum film-forming temperature | ISO 2115:1996 | 16–18 °C |
| Residual vinyl acetate monomer | ISO 13741-1:1998 | <0.1 % |
In production-scale wood assembly lines using direct roller coaters with chrome or EPDM application rolls, the high non-volatile content permits wet adhesive coat weights between 120 and 180 g/m² for beech and oak laminations. The reduced free-water content limits fibre swelling in thin veneers and shortens the dry-in period. Open time measured at 23 °C and 50 % relative humidity is typically between 6 and 10 min when evaluated according to DIN EN 827:2006. Pressing at 0.7–1.0 N/mm² for 25–45 min at 20 °C yields dry bond strengths above 10 N/mm² on beech tested according to DIN EN 205:2016; exact values depend on substrate moisture content and adhesive spread. For wet-service classification under DIN EN 204:2016, addition of a polymerizable isocyanate hardener at 5–10 wt% of the wet dispersion is required. D3 cold-water immersion criteria are not inherent to the unmodified dispersion and must be verified on the target wood species after crosslinker addition. Published data for this specific configuration is limited, so plant trials remain necessary.
Adhesion performance in water-resistant assemblies is dominated by the crosslink density at the interface. The unmodified homopolymer is re-emulsifiable and loses strength under prolonged water exposure. In D3 tests under DIN EN 204:2016, specimens are immersed in cold water at 23 °C for 4 h and tested wet; without crosslinker, bonds on beech typically fall below the 2 N/mm² wet strength requirement. With an isocyanate hardener at 5–10 %, the same formulations can exceed the threshold, but mixing must be sufficient to avoid hardener-rich islands. These operational boundaries explain why the product is specified for interior wood bonding and dry-service packaging rather than continuous water contact.
The dispersion exhibits pseudoplastic behaviour under increasing shear. Brookfield viscosity at 20 rpm is not a complete rheological fingerprint; cone-and-plate measurements show an apparent viscosity decrease of approximately one order of magnitude when the shear rate rises from 0.1 s⁻¹ to 100 s⁻¹. This shear-thinning supports clean transfer on roller coaters without stringing between cylinders. Viscosity recovery after shear removal occurs within 10–30 s, which is relevant for anti-migration performance in porous papers and open board. The polymer phase has a glass transition temperature in the range 28–33 °C; this contributes to the rigid film and the 18 °C minimum film-forming temperature. pH adjustment with a 10 % ammonium carbonate solution can raise the as-supplied pH from 4.5–6.0 to 6.5 without destabilization; strong bases or pH values above 7.5 should be avoided because the anionic surfactant system may lose colloidal stabilization. The minimum film-forming temperature is near 18 °C; below this temperature the dispersion does not form a continuous film unless a coalescing aid such as diethylene glycol dibenzoate is incorporated. In lamination processes, maintaining substrate temperature above 20 °C avoids discontinuous film formation and loss of fibre tear.
High-speed paper converting lines operating above 100 m/min typically use direct gravure or smooth-roll coating heads. The controlled high-shear viscosity and high solids of 2160L are suited to lamination of lightweight papers to board without strike-through. Adhesive pickup weights of 30–60 g/m² are typical in print-lamination applications; values outside this range may require dilution with water to 50–55 % solids or thickening with a cellulose ether. The absence of external plasticizer reduces migration into absorbent substrates after aging at 40 °C. For spiral winding of paper cores, formulations based on 2160L exhibit rapid tack development; however, published data for this specific configuration is limited, and line speed and open time must be established by plant trials.
Compared with vinyl acetate-ethylene copolymers, the homopolymer composition of 2160L produces a harder film with higher dry tensile strength and lower elongation at break. Tensile properties can be evaluated on cast films according to ISO 527-3:2018. Where low elongation and high creep resistance on porous substrates are required, the homopolymer is preferred; where low-temperature film formation and flexibility are required, VAE dispersions are selected. The unmodified homopolymer is not suitable for continuous immersion. D3 or D4 wet-service classifications require additional crosslinking or selection of a copolymer with a hydrophobic backbone. Compared with lower-solids PVAc dispersions, the polymer content near 60 % reduces water content per unit adhesive, shortens setting time, and permits higher coat weights without excessive soak-in. A lower-solids product may be preferable when open time must be extended or when low viscosity is needed for spray application. Compared with one-component polyurethane dispersions, the product has lower cost per kilogram and eliminates isocyanate handling, but water resistance and solvent resistance are lower. Tensile shear strengths and creep resistance should be compared only after the same test conditioning sequence according to DIN EN 204:2016.
A starting formulation for an interior wood-bonding adhesive may contain 100 parts Vinavil 2160L, 0.2–0.5 parts of a silicone-free defoamer, 20–30 parts of calcium carbonate, and 2–4 parts of a benzoate plasticizer when reduction of the minimum film-forming temperature is needed. The plasticizer addition lowers MFFT from near 18 °C to below 5 °C but reduces dry tensile strength; therefore, the selection of plasticizer level should be optimized using DIN EN 205:2016 lap-shear specimens. Mixing is carried out in a planetary mixer with a helical stirrer at 20–30 rpm for 15–20 min after filler addition to avoid temperature rise above 35 °C. For D3 formulations, the hardener is added last under slow agitation, and the adhesive is transferred to sealed containers to limit carbon dioxide interference with isocyanate crosslinking.
Formulation with fillers and crosslinkers on production mixing equipment requires controlled shear. The dispersion tolerates up to 30 wt% calcium carbonate with particle size 2–10 µm when added under a high-shear disperser at 500–1000 min⁻¹. Incorporation of filler increases viscosity; final adhesive viscosity can remain below 20,000 mPa·s when the filler is pre-slurried in water. Above 30 wt% filler, settling can occur in storage, and batch homogeneity must be confirmed by viscosity and density checks. Aluminum chloride or boric acid fixing agents used in paper tube production should be pre-diluted and added slowly under high-shear dispersion because rapid ionic coagulation can produce grit. Batch-to-batch viscosity variation is normally controlled within ±10 % of the target; this allows stable metering on gravure coating units. For D3 wood-bonding formulations, the polymerizable isocyanate hardener is added under slow agitation after the filler and defoamer have been dispersed, and pot life is typically limited to 4–8 h depending on temperature and hardener concentration.
Regulatory compliance is formulation-specific and must not be assumed from base dispersion composition alone. Adhesives containing Vinavil 2160L may be evaluated under FDA 21 CFR 175.105 for indirect food contact if other ingredients are suitable, but no certification applies to the as-supplied dispersion unless stated in writing. The polymer fraction is subject to the REACH polymer exemption under Regulation (EC) No 1907/2006; the vinyl acetate monomer is registered and residual monomer is controlled below 0.1 %. Testing for specific migration limits should follow Regulation (EU) 10/2011 where the formulated adhesive is used in food-contact laminates.
| Requirement | Standard or regulation | Applicability boundary |
|---|---|---|
| Dry lap-shear strength on beech | DIN EN 205:2016 | Formulated adhesive only |
| Wood adhesive classification | DIN EN 204:2016 | D3 requires crosslinker |
| Open time measurement | DIN EN 827:2006 | Roller coating operations |
| Food contact | FDA 21 CFR 175.105; Regulation (EU) 10/2011 | Formulation-specific migration testing |
| REACH polymer exemption | Regulation (EC) No 1907/2006 | Polymer fraction only; monomers registered |
Equipment cleaning should be initiated before the dispersion dries. Warm water at 40 °C and a 0.1 % sodium bicarbonate solution remove wet residues; dried films require mechanical removal or swelling with ethyl acetate because coalesced PVAc is not readily alkali-soluble. Stainless steel and polypropylene tanks are compatible; mild steel tanks should be avoided at pH below 6.0 due to corrosion and iron-ion contamination. The product should be stored in sealed containers at 5–35 °C. The manufacturer indicates a shelf life of 12 months from production in unopened containers; after opening, contamination with metal fines or cationic additives can produce grit and should be avoided. Freeze-thaw stability is not guaranteed; exposure to temperatures below 0 °C can produce irreversible coagulum. Aerobic preservation is optimized for normal storage; prolonged headspace temperatures above 35 °C may cause surface skinning and viscosity drift. At relative humidity above 60 %, dry-in of PVAc films is significantly retarded, and forced air movement at 25–30 °C is required to prevent delayed bond development in lamination lines.
