| HS Code | 802883 |
| Appearance | milky white liquid |
| Solid Content | 55 ± 2% |
| Viscosity | 3000 - 6000 cps (Brookfield) |
| Ph | 4.5 - 6.5 |
| Density | 1.05 - 1.10 g/cm³ |
| Shelf Life | 6 months from date of manufacture |
| Storage Temperature | 5 - 35°C |
| Application Temperature | 10 - 40°C |
| Minimum Film Forming Temperature | 5°C |
| Drying Time | fast setting, 10 - 20 minutes at room temperature |
| Residual Monomer | < 0.1% |
| Food Contact Compliance | FDA 21 CFR 175.105 compliant |
| Freeze Thaw Stability | stable up to 3 cycles |
| Film Clarity | clear on drying |
As an accredited Eco-B Non-Phenol VAM (Food Contact Packaging Adhesive) factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied in 50 kg HDPE drums with tamper-evident seals, ensuring safe, hygienic handling of Eco-B Non-Phenol VAM food-contact adhesive. |
| Container Loading (20′ FCL) | Container Loading (20′ FCL): Eco-B Non-Phenol VAM adhesive in sealed drums, palletized, and braced securely within container for safe transit. |
| Shipping | Ship via sealed, approved containers with proper hazardous material labeling if applicable. Store away from food, heat, and moisture. Use dedicated transport to prevent contamination, secure loads to avoid spills, and include Safety Data Sheets. Comply with local and international shipping regulations for adhesives and food-contact chemicals. |
| Storage | Store Eco-B Non-Phenol VAM in its original, tightly sealed container in a cool, dry, well-ventilated area, ideally between 5°C and 35°C. Keep away from direct sunlight, heat sources, sparks, and open flames. Avoid moisture and contamination. Use within the manufacturer’s specified shelf life, ensuring proper labeling and handling per food-contact safety guidelines. |
| Shelf Life | Shelf life is 12 months from manufacture when stored unopened, sealed, and at recommended temperatures. |
In flexible packaging for single-serve dry food sachets, Eco-B Non-Phenol VAM is copolymerized with ethylene at 15–30 wt% vinyl acetate content to produce a VAE dispersion used as a paper-to-polyethylene laminating adhesive. The formulated adhesive is diluted to 38–42% non-volatile content and applied on a gravure cylinder with 60–80 lines/cm cell depth. Dry coat weight is controlled at 2.0–3.0 g/m². Line speed on a Cerutti rotogravure press is typically 180–240 m/min, with oven zones set at 70°C/80°C/90°C. The laminated structure is 18 µm OPP / adhesive / 40 µm LDPE. Rheology after dilution is measured with a Brookfield LV viscometer, spindle 2 at 60 rpm, and is held at 200–600 mPa·s at 25°C to prevent gravure cell void and back-trap. In converter trials, web tension above 140 N on 20 µm OPP caused necking and adhesive streak, while tension below 80 N led to tunnel formation at the nip. T-peel adhesion after 24 h cure is verified according to ASTM D1876; records from converting trials show 2.5–4.0 N/15 mm before film break. Residual vinyl acetate in the polymer is below 0.05 wt%, meeting FDA 21 CFR 175.105 and EU 10/2011 migration limits for vinyl acetate of 12 mg/kg simulant. Avoid amine-based pH buffers above 0.1 wt% because they destabilize the vinyl acetate ester group. The terminal product is a single-serve sugar, salt, or instant beverage sachet. At relative humidity above 70%, open time on the laminator shortens; converter logs indicate edge tack increases within 15 min and thinning to 35% solids avoids roll blocking.
Powdered beverage canister spiral winding uses a polyvinyl acetate homopolymer adhesive with Eco-B Non-Phenol VAM as the main building block. A semicontinuous emulsion polymerization with ammonium persulfate initiator at 0.3–0.5 wt% on VAM is used; monomer addition time is 4–5 h to prevent thermal runaway. The VAM feed is polymerized at 75–80°C under reflux to reach a weight-average molecular weight near 2.5×10⁵ g/mol. The final adhesive has solids 50–55%, viscosity 2500–5000 mPa·s at 25°C per ISO 2555. Application on the canister winding line is by disc roller at 0.08–0.12 g/m² dry basis per paper ply. The adhesive must satisfy FDA 21 CFR 176.170 and 176.180 because the inner surface may contact dry beverage powder. Binders are tested for low molecular weight phenol residues by HPLC-MS with detection limit 0.01 µg/dm². Do not combine with borax at more than 0.5 wt% on solids; it increases tack but reduces water resistance after the canister passes through a humid filling room. The terminal product is a 400 g paperboard canister for powdered milk or coffee substitute. If adhesive solids exceed 55%, spiral winding speed above 40 m/min produces stringing; if below 50%, ply bond strength falls below 0.6 N/mm as per TAPPI T 833.
Typical formulation ranges are summarized in the following table.
| Application | Resin base | VAM content (wt%) | Application solids / coat weight | Process temperature |
|---|---|---|---|---|
| Dry food sachet lamination | VAE dispersion | 70–85 | 38–42% solids; 2.0–3.0 g/m² dry | 70–90°C |
| Paperboard canister liner | PVAc homopolymer | 100 | 50–55% solids; 0.08–0.12 g/m² dry | ambient |
| Foil lidding seal | VAM-acrylic copolymer | 50–80 | 28–32% solids; 5–7 g/m² wet | 140–160°C |
| Freezer case sealing | EVA hot melt | 18–28 | 100% solids; 0.03–0.06 g/lineal m | 150–170°C |
| Dehydrated soup sachet | VAM-acrylate dispersion | 85–92 | 45–50% solids; 1.5–2.5 g/m² dry | 23–35°C cure |
| Chilled meat flow pack | VAM-modified polyol | 10–18 | 100:60–100:85 ratio; 1.0–1.8 g/m² | 35–60°C |
Aluminium foil lidding for cultured dairy cups uses a heat-seal lacquer formulated from Eco-B Non-Phenol VAM in an acrylic acid or maleic anhydride copolymer. The resin is dissolved in ethyl acetate/methyl ethyl ketone at 28–32% solids. The coating is applied to 40 µm soft-tempered foil at 5–7 g/m² wet, then dried through a forced-air oven at 140–160°C for 3–5 s. Hot tack plateau is observed between 180°C and 210°C; below 170°C seal strength falls below 4 N/15 mm and above 220°C foil discoloration and polymer decomposition occur. Seal strength to polypropylene or polystyrene cup rims is tested per ASTM F88; target burst force is not lower than 8 N/15 mm after sealing at 190°C, 0.4 MPa, 1.0 s. The VAM-based polymer contains no alkylphenol ethoxylate surfactants; NMR analysis of the extracted coating shows nonylphenol below 0.1 mg/kg. Compliance is assessed under EU 10/2011 food simulant D1 for aqueous dairy contact, with overall migration below 10 mg/dm² and vinyl acetate-specific migration below 12 mg/kg. Avoid high-acid monomers below pH 3.5; acetic acid evolution accelerates during drying and may corrode aluminium. The terminal product is a foil lid for single-serve yoghurt or quark cups. Field data from a rotary die-cut lid line indicate that elastomer-free VAM copolymers with Tg above 35°C avoid ghosting on stack-feed magazines. Published data for fatty simulant D2 with this exact non-phenol VAM grade are limited; filling plants typically qualify using aqueous simulant D1 for cultured dairy products.
Secondary packaging for frozen food requires EVA-based hot melts containing Eco-B Non-Phenol VAM. Vinyl acetate content in the copolymer is maintained between 18 wt% and 28 wt%; higher VA content lowers the glass transition to below −20°C and improves adhesion to clay-coated cartonboard at −18°C freezer storage. The hot melt is compounded with tackifier and microcrystalline wax at 150–170°C, then applied through a pneumatic nozzle at 0.03–0.06 g/lineal m on a case erector running 25–40 cases/min. Brookfield viscosity at 180°C is 1000–3000 mPa·s; if tackifier content exceeds 60 wt%, cold flexibility deteriorates and fibre pick from printed cartons increases. Open time is 3–8 s; compression pressure of 0.2–0.5 MPa is held for 5–10 s. The terminal product is a sealed corrugated case for frozen fish fillets or prepared potato products. The formulation is tested for low-temperature brittleness per ASTM D3111; converters report acceptable fibre tear at −25°C when VA content stays above 20 wt%. For incidental food contact, FDA status under 21 CFR 175.105 is supported because the adhesive is not intended to contact food directly and is applied to the outer side of the primary polyethylene bag. Avoid prolonged tank hold times above 8 h at 170°C; VAM chain scission raises melt index and acetic acid release. If the line uses a tank temperature above 180°C, acetic acid evolution from VAM thermal degradation rises above 50 ppm and must be controlled by local exhaust.
The compliance summary matrix is shown below.
| Application | Primary regulation | Test method | Typical control limit |
|---|---|---|---|
| Dry food sachet lamination | FDA 21 CFR 175.105; EU 10/2011 | ASTM D1876 | ≥2.0 N/15 mm; VAM SML <12 mg/kg |
| Paperboard canister liner | FDA 21 CFR 176.170/176.180 | TAPPI T 833 | Ply bond ≥0.6 N/mm; nonylphenol <0.1 mg/kg |
| Foil lidding seal | EU 10/2011; FDA 21 CFR 175.105 | ASTM F88 | Seal strength ≥8 N/15 mm; OML <10 mg/dm² |
| Freezer case sealing | FDA 21 CFR 175.105 | ASTM D3111 | No cracking at −25°C; fibre tear at −25°C |
| Dehydrated soup sachet | EU 10/2011; FDA 21 CFR 176.170 | ASTM F904 | Bond ≥0.9 N/mm; residual VAM <0.02 mg/dm² |
| Chilled meat flow pack | FDA 21 CFR 177.1350; EU 10/2011 | ASTM D1876 | Bond ≥2.0 N/15 mm; PAA <0.01 mg/kg |
For paper/polyethylene laminate sachets used with dehydrated soup mixes, a VAM-acrylate copolymer dispersion at 45–50% solids is applied by an air-knife coater onto 30–40 g/m² machine-glazed kraft paper before extrusion lamination with 25 µm LDPE. The VAM monomer content in the copolymer is 85–92 wt%. Dry adhesive add-on is kept at 1.5–2.5 g/m². The combined web is cured at 23–35°C for 48 h. Package bond strength after cure is checked according to ASTM F904 and is required above 0.9 N/mm; production data from a pilot laminator show values of 1.1–1.4 N/mm. Residual VAM in the dried adhesive film is below 0.02 mg/dm² when extracted with 10% ethanol at 40°C for 10 d under EU 10/2011 simulant A condition. At coating room relative humidity above 65%, the VAM-acrylate dispersion skims over and requires a wetting agent addition below 0.1 wt% to maintain leveling. Do not use zinc stearate above 0.3 wt%; seal strength decreases after 7 d storage. The terminal product is a 45 g pouch for instant noodle seasoning or dried vegetable mix. In high-speed filling at 90–120 pouches/min, the laminate track must be below 0.5 N/cm film-to-film coefficient of friction; additives to the VAM dispersion can raise slip but must not exceed 0.5 wt% on solids to avoid migration failure.
Chilled processed meat flow-pack uses a two-component solventless adhesive whose polyol component is synthesized with Eco-B Non-Phenol VAM at 10–18 wt% of the prepolymer. The adhesive is mixed in a 100:60 to 100:85 polyol:isocyanate ratio by volume at 35–45°C. Coat weight is 1.0–1.8 g/m² on 12 µm PET, followed by lamination to 50 µm PE at nip temperature 50–60°C and pressure 3–5 bar. Reaction exotherm in the meter-mix unit is below 10°C per 100 kg batch at 40°C; accelerator level above 0.05 wt% shortens pot life below 20 min. The laminate is aged for 5–7 d at 25–30°C before slitting. Lamination bond strength is tested per ASTM D1876; target exceeds 2.0 N/15 mm, and typical measured range is 2.3–3.6 N/15 mm. Primary aromatic amine and residual VAM are controlled below 0.01 mg/kg in 10% ethanol and 3% acetic acid simulants, consistent with EU 10/2011 and FDA 21 CFR 177.1350 where applicable. The terminal product is a modified-atmosphere pack for fresh poultry portions. Because VAM monomer can react with isocyanate under high moisture, the plant requires a dry air supply at dew point below −40°C for the metering unit. Avoid open humidity above 30% RH; isocyanate-NCO reacts with VAM ester hydrolysis products and forms carbamate species that increase viscosity. If the adhesive bath temperature exceeds 50°C, viscosity drops below 800 mPa·s and roller transfer may become unstable.
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For food-contact laminates produced on high-speed gravure and roller lines, the aqueous vinyl acetate-ethylene copolymer dispersion designated Eco-B Non-Phenol VAM 7042 is formulated without alkylphenol ethoxylate surfactants and without phenol-based co-solvents. The ready-to-use adhesive is supplied at a nominal solids content of 52.0 ± 1.5 wt%, a Brookfield RVT viscosity of 1,800–2,800 mPa·s at 25°C, and a pH of 4.5–5.5. Regulatory coverage includes FDA 21 CFR 175.105 for food-contact adhesives and FDA 21 CFR 176.170 for paper and paperboard components, with overall migration tested under EN 1186-1:2002 to remain below 10 mg/dm² in 10% ethanol and 3% acetic acid simulants. The grade is intended for indirect food contact, where a functional barrier or intervening layer prevents direct contact with aqueous, acidic, or fatty foods.
On multi-station dry laminators, application typically occurs at dry coating weights of 3.0–8.0 g/m² on corona-treated OPP, PET, and aluminium foil. In production-scale runs on a 9-station laminator operating at 140 m/min with three-zone oven temperatures of 60°C / 75°C / 85°C, paper-polyester T-peel values reached 2.4–3.1 N/15 mm after 24 h conditioning at 23°C and 50% RH when tested according to ASTM D1876-08. The minimum dry film weight required on aluminium foil is 2.5 g/m²; below this value, cratering and channeling defects have been observed when the laminate passes through a heated nip at 70°C and 0.4 MPa squeeze pressure. The product’s surface tension after dilution to 40 wt% solids is 36–38 mN/m, which allows wetting of film substrates without addition of external surfactants that would otherwise increase water sensitivity in the cured bond.
In conventional VAM homopolymer and vinyl acetate-ethylene copolymer food packaging adhesives, nonylphenol ethoxylates frequently serve as emulsifiers and wetting agents at 0.5–1.5 wt% of the liquid product. These alkylphenol ethoxylates are considered substances of very high concern under REACH due to endocrine-disrupting properties in aquatic compartments. In the Eco-B Non-Phenol VAM 7042 formulation, the wetting function is provided by a phosphate ester-compatibilised linear alcohol ethoxylate with a cloud point of 42°C, which does not require nonylphenol for latex stability. The replacement is not a simple one-to-one surfactant exchange; the phosphate ester changes the particle charge density from approximately −18 mV in the conventional system to −25 mV in the Eco-B system, as measured by electrophoretic mobility at pH 5.0. This higher negative zeta potential reduces shear-induced coagulation on gravure cylinders but increases sensitivity to multivalent cations such as calcium and magnesium in dilution water. Consequently, dilution water hardness should be maintained below 150 mg/L as CaCO₃ to avoid viscosity drift during long recirculation runs.
Each production lot is released against the following certificate-of-analysis matrix; all values are measured on undiluted adhesive unless otherwise stated.
| Property | Value / Limit | Test Method |
|---|---|---|
| Solids content | 52.0 ± 1.5 wt% | ISO 3251:2019 |
| Brookfield viscosity | 1,800–2,800 mPa·s | ISO 2555:2018 |
| pH | 4.5–5.5 | ISO 976:2013 |
| Density | 1.06 ± 0.02 g/cm³ | ISO 2811-1:2016 |
| Residual vinyl acetate monomer | < 100 mg/kg | GC-MS, internal method based on EN 13628-1 |
| Nonylphenol + nonylphenol ethoxylates | < 10 mg/kg | LC-MS/MS, internal method based on EPA 1650A |
| VOC content | < 0.1 wt% | EPA Method 24 |
| Minimum film formation temperature | 5°C | ISO 2115:2000 |
| Storage stability | ≥ 6 months at 5–30°C | Internal colloid stability |
Across 12 production lots, batch-to-batch variation was ± 3% relative standard deviation for solids and ± 6% for Brookfield viscosity, which is narrow enough to maintain consistent gravure transfer without repeated press viscosity adjustment. During a 4-week storage test at 40°C, viscosity increased by 18% from initial, with no skinning or coagulum. The product’s minimum film formation temperature of 5°C permits ambient coalescence in cold lamination rooms, but the adhesive film should not be exposed to freezing conditions before cure; freeze-thaw resistance is limited to 3 cycles from −5°C to 20°C.
When cured films of Eco-B Non-Phenol VAM 7042 were extracted in 10% ethanol for 10 days at 40°C, the measured overall migration was 7.8 ± 0.9 mg/dm² in three independent batches; in 3% acetic acid, the value was 8.4 ± 1.1 mg/dm², both below the EU 10 mg/dm² limit. The conventional VAM homopolymer tested under the same conditions produced 11.2–14.6 mg/dm² in 10% ethanol, driven by nonylphenol ethoxylate migration into the simulant. Specific migration of vinyl acetate monomer from the Eco-B film was below 0.5 mg/kg when tested by GC-MS according to EN 13130-5:2004, compared with 1.8–3.2 mg/kg for the conventional grade. These measurements are relevant to packaging converters because regulatory audits increasingly require full migration documentation for adhesives used in multi-layer laminates even when the adhesive is behind a barrier layer.
In sensory evaluation following ISO 13302:2003, packaging laminates made with Eco-B adhesive showed a flavour score of 1.2 on the 0–2 scale, where 0 indicates no detectable off-odour; the conventional APEO-containing adhesive scored 1.8. Because the grade contains no formaldehyde-donor biocide, free formaldehyde measured by ISO 14184-1:2011 was below 16 mg/kg in the liquid. For converters using mixed-product inventories, the cleaning requirement between conventional VAM and Eco-B is the same as standard water-based adhesive changeover: a 20 min rinse with warm water at 40°C followed by a 10 min circulation with 1 wt% aqueous ammonia has been sufficient to prevent cross-contamination of APEO at levels above 10 mg/kg.
Comparative values for a typical conventional APEO-containing VAM are provided for audit support.
| Parameter | Eco-B Non-Phenol VAM 7042 | Conventional VAM | Test method |
|---|---|---|---|
| Nonylphenol ethoxylates in dry film | < 10 mg/kg | 180–650 mg/kg | LC-MS/MS based on EPA 1650A |
| Overall migration, 10% ethanol, 10 days, 40°C | 7.8 ± 0.9 mg/dm² | 11.2–14.6 mg/dm² | EN 1186-1:2002 |
| T-peel paper-PET | 2.4–3.1 N/15 mm | 2.0–2.7 N/15 mm | ASTM D1876-08 |
| Free formaldehyde | < 16 mg/kg | 25–45 mg/kg | ISO 14184-1:2011 |
| Viscosity after 4 weeks at 40°C | + 18% | + 32% or gel | ISO 2555:2018 |
Aluminium foil presents a higher energy substrate but a lower porosity than paper, meaning all water removal must occur through evaporation from the coated surface during oven dwell. In a production trial on a laminator with 2.4 m web width and 0.8 m oven length per zone, the Eco-B adhesive was applied at 2.2 g/m² dry on 7 µm aluminium foil laminated to 30 µm cast polypropylene at 110 m/min. With first-zone air temperature set at 65°C and second-zone at 82°C, the residual moisture in the adhesive layer measured by Karl Fischer titration was 0.8 wt% at the nip, and no blisters were observed after 30 min in-line ageing at 40°C. At 130 m/min, the residual moisture increased to 2.3 wt%, producing intermittent tunnels between the foil and film; the corrective action was to raise the second-zone temperature to 90°C and reduce line speed to 120 m/min. This illustrates the drying-rate boundary for low coating weight applications: a minimum air impingement velocity of 15 m/s in the final oven zone is required to maintain residual moisture below 1.0 wt% when line speed exceeds 100 m/min.
Before ambient relative humidity exceeds 60%, wood-fiber substrates should be pre-dried at or below 70°C, because water absorption into paper can depress the effective solids at the nip and lower initial tack. The adhesive should not be combined with cationic starch or polyamine-based defoamers; the anionic phosphate ester stabiliser forms insoluble aggregates at pH below 4.0 or above 9.5, and this incompatibility has been observed as a rapid increase in Brookfield viscosity from 2,200 mPa·s to over 10,000 mPa·s within 30 min when 0.2 wt% of a cationic polyamine was added to the stirred tank. The product is also not recommended for direct wet contact with liquid foods because it is not formulated as a direct food contact material. Storage should be in sealed HDPE or stainless-steel vessels at 5–30°C; sustained exposure to temperatures above 40°C will accelerate molecular weight growth and may shift peel values by more than 15% after 4 weeks.
