| HS Code | 748355 |
| Appearance | milky white liquid |
| Solid Content | 45-55% |
| Viscosity | 500-3000 mPa·s |
| Ph | 5.0-7.0 |
| Glass Transition Temperature | -10 to 10 °C |
| Minimum Film Forming Temperature | 0-10 °C |
| Particle Size | 0.2-1.0 μm |
| Density | 1.02-1.06 g/cm³ |
| Surface Tension | 35-45 mN/m |
| Residual Monomer | <0.1% |
| Storage Life | 6 months |
| Storage Temperature | 5-35 °C |
| Film Clarity | transparent |
As an accredited VAc-Acrylate Emulsion for Textile Adhesives factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | VAc-Acrylate Emulsion for Textile Adhesives is supplied in 200 kg polyethylene-lined drums, ensuring safe storage and easy handling. |
| Container Loading (20′ FCL) | Load palletized drums or IBCs of VAc-Acrylate Emulsion into 20ft container; brace securely, protect from freezing and direct sunlight. |
| Shipping | Ship as non-hazardous aqueous emulsion in sealed drums, IBCs, or flexitanks. Protect from freezing and direct sunlight; store between 5–35°C. Use dedicated pumps and clean, dry tanks. Avoid contamination, excessive agitation, or prolonged high temperatures. Ensure proper labeling and documentation for road, sea, or rail transport. |
| Storage | Store VAc-Acrylate Emulsion in tightly sealed containers in a cool, dry, well-ventilated area away from direct sunlight and heat sources. Protect from freezing; ideal storage temperature is typically 5–35°C. Keep away from strong oxidizers and incompatible materials. Follow manufacturer’s shelf-life guidelines and stir gently before use. |
| Shelf Life | Shelf life is typically 6–12 months when stored sealed in a cool, dry place, avoiding freezing and direct sunlight. |
In paste printing of fusible interlinings, a VAc-acrylate dispersion at 40–48% solids is thickened with an alkali-swellable acrylic associative rheology modifier to 8,000–25,000 mPa·s measured on a Brookfield RV spindle 6 at 20 rpm. The paste is printed through a 100–125 µm dot gravure cylinder onto woven cotton or polyester-cotton base cloth at 20–35 g/m² dry add-on. Engraved dot diameter is held between 0.5 mm and 1.2 mm, with center spacing of 1.0–2.5 mm; insufficient cavity release produces variable dot weight and poor fabric penetration. The dried coating remains non-blocking up to 35 °C warehouse storage and reactivates on a flat-bed fusing press at 125–150 °C, 2.0–4.0 bar, and 10–20 s dwell. For durability through 60 °C aqueous laundering, a blocked isocyanate crosslinker is optionally post-added at 1.5–3.0 phr on dry polymer; this shortens usable pot life from 6 months to 8–12 weeks at 25 °C. Dry-cleaning resistance is a limiting boundary: after three perchloroethylene cycles according to ISO 3175-2, bonded shell-to-interlining strength may decline by 40–60% because the VAc-acrylate film is partially swollen by the solvent. As a result, this grade is specified for launderable shirting and blouses rather than dry-clean-only tailored outerwear. The terminal parts include collar, cuff, front facing, and waistband assemblies.
The qualification matrix for gravure-printed fusible interlining adhesive includes:
| Control point | Method | Configuration |
|---|---|---|
| Dry peel adhesion after fusing | ASTM D2724-19 | 180° peel on 5 cm strip |
| Accelerated laundering durability | AATCC 61-2A | 3 successive cycles, visual delamination assessment |
| Dry-cleaning durability | ISO 3175-2 | Perchloroethylene, 3 cycles, change in peel force recorded |
| Dimensional stability after fusing | ISO 5077 | Maximum change 1.5% in warp and weft |
Electrostatic flocking lines for automotive glove boxes and interior storage trays use a high-viscosity VAc-acrylate adhesive at 35,000–60,000 mPa·s on a Brookfield RV spindle 6 at 4 rpm. The paste is applied by knife-over-roll at wet film thickness 80–150 µm to flame-treated polypropylene or ABS, then passed through an electrostatic field at 60–90 kV and 50–60% relative humidity. Nylon flock of 0.8–1.2 mm fibre length and 1.5–2.2 dtex fineness is embedded to 60–80% of its length; embedding below 50% reduces abrasion resistance, while embedding above 85% creates a stiff surface. The emulsion is self-crosslinked with diacetone acrylamide and adipic dihydrazide at 0.4–0.8 wt% dihydrazide on dry polymer, cured in forced-air ovens at 130–150 °C for 2–4 min. Abrasion testing is conducted on a Wyzenbeek apparatus according to ASTM D4157 with cotton duck for 15,000 double rubs, and crock fastness is evaluated by AATCC 8 wet and dry. Interior flammability is assessed by FMVSS 302 horizontal burn rate, and the compound is screened against REACH Annex XVII entries for restricted azo amines and phthalate plasticizers. The principal operational boundary is hydrolytic ageing: continuous exposure at 85 °C and 85% relative humidity for 500 h can raise surface tack and increase flock loss above 5%. Terminal components are glove box linings, armrest trays, and decorative interior flap surfaces.
For tufted broadloom pre-coat and lightweight carpet tile backing, a VAc-acrylate emulsion is loaded with dry-ground calcium carbonate at 300–500 phr on total dry polymer, producing a filled compound with 78–84% total solids and 20,000–40,000 mPa·s viscosity measured on a Brookfield RV spindle 6 at 20 rpm. Carboxylic acid comonomer content between 1.5 wt% and 2.5 wt% is required for mineral dispersion; below 1.0 wt%, filler settles in a recirculation trough within 4 h. The compound is applied after tufting by lick-roll or knife-over-roll at wet add-on 500–900 g/m², then dried in a four-zone stenter at 120–150 °C for 5–12 min to a dry add-on of 300–600 g/m². Tuft withdrawal force is evaluated by ISO 4919, with automotive floor-mat acceptance commonly above 3.5 kg per tuft. Wet tuft retention after 24 h water immersion at 23 °C remains 60–75% of dry strength, a limitation caused by plasticization of the vinyl acetate-rich phase. The pre-coat is not specified for exterior marine carpet or poolside tile because repeated exposure to pH 10–11 cleaning solutions accelerates hydrolysis of acetoxy groups and reduces filler binding. VOC emission of finished carpet is assessed by chamber testing according to ISO 16000-6 after 28 days loading. Terminal grades include automotive floor mats, residential wall-to-wall carpet, and secondary-backed carpet tiles.
On automotive seat foam lamination lines running 20–30 m/min, a VAc-acrylate emulsion is diluted to 45–52% solids and 150–350 mPa·s Brookfield RVT viscosity at 25 °C for air-assisted spray application through 0.8–1.2 mm nozzles. The adhesive is applied to polyether polyurethane foam at 8–15 g/m² dry, dried at 70–90 °C in a 5–8 m tunnel, and immediately married to the cover stock by compression rollers at 1.0–2.5 bar. Dry film thickness is controlled between 10 µm and 25 µm; thicker films soften foam edges and increase fogging. For heat resistance at 120 °C for 500 h, a water-dispersible aliphatic polyisocyanate crosslinker is added at 1.0–2.0 wt% on latex solids. The resulting two-component mixture has a working pot life of 4–6 h, and spray nozzles must be rinsed with dilute ammonia solution to prevent carbamate crust formation. VOC and fogging behaviour is measured by VDA 278 thermodesorption; published data for this specific configuration is limited, but emission controls focus on residual monomer, coalescent-free formulations, and the absence of solvent-borne tackifiers. Plasticized PVC skins present an operational boundary: after ISO 188 ageing at 90 °C for 500 h, monomeric plasticizer migration above 30% by weight in the skin can reduce bond strength by 25–50%. Terminal applications are seat side bolster cover mounts, headliner edge wraps, and door panel armrest inserts.
In pleated HVAC panel filters and automotive cabin air filters, a VAc-acrylate emulsion can replace hot-melt EVA bead adhesives only where continuous operating temperature remains below 60 °C. Above 70 °C, creep of the vinyl acetate phase leads to pleat height loss and potential media contact. The emulsion is prepared at 40–45% solids and 300–800 mPa·s Brookfield RVT viscosity at 25 °C for rotary fiberization through 1.0–2.0 mm nozzle spacing. Adhesive is deposited at 1.5–3.0 g/m of linear bead, followed by air impingement drying at 110–130 °C for 2–5 min. Polyester and polypropylene media require corona pretreatment at 38–42 mN/m; without surface activation, the wet adhesive forms discrete droplets and peels cohesively after pleating. Clean pressure drop is measured by ASTM D737 at 125 Pa on a 30 cm × 30 cm panel, and adhesive bead placement is limited to less than 2% of media surface to maintain classification under ASHRAE 52.2. Embrittlement below -5 °C is a limitation; cold-climate cabin filters may require blending with 10–20% of a lower-Tg acrylic ester copolymer. Standard VAc-acrylate grades do not contain flame retardants required for UL 900 class-rated exhaust or high-temperature duct liners. Terminal products include MERV 8–13 commercial HVAC panel filters, cabin intake filters, and vacuum cleaner exhaust filters.
Competitive VAc-Acrylate Emulsion for Textile Adhesives 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!
VAc-acrylate emulsion for textile adhesives is a carboxylated vinyl acetate-acrylic ester copolymer dispersion supplied as a waterborne anionic textile laminating grade. In commercial form the product is not a polyvinyl acetate homopolymer and not a vinyl acetate-ethylene dispersion; it is co-polymerized with an acrylic ester such as butyl acrylate or 2-ethylhexyl acrylate to produce a soft film without external plasticizer. The product designation covers soft and medium textile laminating variants; the soft variant is adjusted by acrylic ester content to a minimum film-forming temperature below 5 °C and a glass transition temperature between −5 °C and +10 °C. Incoming specification usually requires non-volatile content 50–55 wt% by ISO 3251, pH 4.5–5.5 by ISO 1148, Brookfield RVT viscosity 800–1500 mPa·s at 20 rpm and 25 °C, average particle size 0.20–0.45 μm by ISO 22412, density 1.06–1.09 g/cm³, and residue on 40 mesh screen below 100 ppm. Free vinyl acetate monomer is controlled below 0.1 wt% using ISO 13741-1; formaldehyde release on the dried film is below 16 ppm under EN ISO 14184-1. The product is free of alkylphenol ethoxylates under REACH Annex XVII entry 46a; typical APEO content is not detected above 10 ppm by LC-MS/MS. The emulsion is stabilized with an anionic/nonionic surfactant system and carries carboxylic acid functionality for pH-triggered thickening and improved adhesion to polyethylene terephthalate, polyamide, regenerated cellulose, and urea-formaldehyde-treated nonwovens.
The product is intended for textile adhesive applications including foam-to-fabric lamination for automotive interiors, nonwoven scrim bonding, flocking, garment interlinings, and mattress ticking. It can be applied by knife-over-roll, slot die, rotary screen, spray, or mechanical frothing. The selection over polyvinyl acetate homopolymer is made when the laminate must retain softness and peel strength below 10 °C and when migratory plasticizers such as dibutyl phthalate, benzoate esters, or triacetin are unacceptable. Compared with all-acrylic emulsions, VAc-acrylate offers a lower monomer cost and often higher wet tack on polar textiles, but it gives a narrower hydrolytic and UV service window and is not recommended for continuous exterior exposure or prolonged hot-water laundering. Compared with vinyl acetate-ethylene dispersions, the acrylate ester segment provides higher ambient-temperature cohesive strength and better adhesion to synthetic fiber finishes, although vinyl acetate-ethylene may offer lower glass transition temperature and greater low-temperature extensibility at equivalent solids.
For flocking, the emulsion is thickened to 3500–5000 mPa·s and applied through a 1.0–1.5 mm rounded-edge doctor or rotary screen onto the substrate; electrostatic flocking with nylon or viscose fibers of 3.3–6.7 dtex and 0.5–1.0 mm length is common. Dry add-on after tunnel drying at 110–130 °C is 60–90 g/m². Abrasion resistance measured by ISO 12947-2 cycles to failure is often specified at 10,000–25,000 rubs for automotive or footwear flocked surfaces. In garment interlining applications the product is printed as a dot-coat at 20–30 g/m² dry and fused at 130–140 °C for 10–20 s under 2–3 bar platen pressure; bond strength is evaluated by ISO 11339 T-peel rather than ASTM D903 at 180° for two flexible adherends.
On a knife-over-roll line, coating weight depends on low-shear viscosity and blade gap. The as-supplied pH of 4.5–5.5 maintains the carboxylate groups in a low-swelling acid form; raising pH to 7.0–7.5 with 10% aqueous ammonia expands the polymer particles and raises Brookfield viscosity from roughly 900 mPa·s to 2400 mPa·s in typical batches. The resulting shear-thinning curve permits slot-die application at line speeds of 15–40 m/min, but low-shear viscosity above 12,000 mPa·s at 25 °C is a critical limit: on a 1.8 m wide knife-coating line, the viscosity excursion produces edge doctoring defects, streaks, and non-uniform add-on because excess material cannot return to the metering gap. Production plants usually add an associative polyurethane thickener as a dilute predispersion at 0.2–0.5 wt% under slow sweep agitation; introducing the same thickener under high-speed dispersion entrains microfoam that collapses to pinholes after drying. For rotary-screen foam bonding, the emulsion is mechanically frothed to a wet density of 0.25–0.45 g/cm³ in a continuous rotor-stator mixer at 2.0–3.5 bar air pressure; squeegee angle and 40–60 mesh screen are selected to deposit 45–65 g/m² wet add-on. Froth viscosity decay and half-life depend on pH, surfactant type, and air injection ratio; processes that pre-neutralize to pH 6.8–7.2 before frothing give better foam stability but may reduce final film water resistance if ammonia is retained.
Batch-to-batch pH drift of more than ±0.2 units is a common plant bottleneck. Without pre-neutralization, thickener demand shifts by 5–10% for the same target viscosity, which is large enough to change coating weight on continuously running lines. Incoming material is therefore standardized against pH, solids, and viscosity before thickener addition; conductivity and particle-size data are used to identify surfactant overdosing or residual initiator.
Dryer zoning also influences film integrity. In a three-zone forced-air oven, the first zone is typically held at 80–100 °C with air velocity 1.5–2.5 m/s to remove surface water without skinning; the final zone reaches 130–150 °C for coalescence and crosslinker activation. Excessively high first-zone temperatures above 120 °C cause surface skinning and micro-blisters because water vapour becomes trapped below a coalesced skin. Residual water in the film above 1.0 wt% reduces peel strength and increases fogging in automotive interior laminates; inline near-infrared or Karl Fischer extraction is used on some production lines to confirm dry add-on.
The principal difference is internal plasticization. Polyvinyl acetate homopolymer has a glass transition temperature between 28 °C and 39 °C and commonly requires 5–15 phr of dibutyl phthalate, benzoate, or triacetin to produce acceptable textile hand. Those plasticizers migrate to the fabric surface, lower peel strength after aging, increase soiling, and are restricted by certain juvenile product standards. A carboxylated VAc-acrylate copolymer lowers Tg by copolymerizing vinyl acetate with an acrylic ester; the textile laminating grade is typically adjusted to a Tg of −5 °C to +10 °C and an MFFT below 5 °C without any external plasticizer. The dry film retains tensile strength of 3–8 MPa and elongation at break of 300–600% when measured by ISO 527-3 at 23 °C. In 180° peel testing on polyester/cotton fabric per ASTM D903, laminates at 50 g/m² dry add-on commonly show 8–15 N/25 mm, whereas unplasticized polyvinyl acetate homopolymer tends to fail cohesively at low temperatures. The acrylic ester segment also improves specific adhesion to polyester and nylon; polar ester groups interact with fiber finishes and terminal groups, reducing the need for external adhesion promoters. The carboxylated polymer can be thickened with dilute ammonia, but overdosing above pH 8.0 should be avoided because slow hydrolysis of the acetate ester releases acetic acid and reduces storage stability.
Comparative property ranges from supplier technical data are summarized as follows. The table is intended for grade selection and is not a specification for a single lot.
| Property | VAc-acrylate textile grade | PVAc homopolymer adhesive | All-acrylic textile binder | VAE dispersion |
|---|---|---|---|---|
| Solids content | 50–55 wt% | 50–55 wt% | 45–55 wt% | 50–55 wt% |
| Glass transition Tg | −5 to +10 °C | +28 to +39 °C | −40 to +10 °C | −20 to +5 °C |
| Minimum film-forming temperature | <5 °C | 15–18 °C | 0–5 °C | 0 °C |
| External plasticizer | not required | 5–15 phr typical | not required | not required |
| Dry-film water whitening | moderate | severe | low | moderate |
| Peel adhesion to polyester/nylon | high | low to moderate | high | moderate to high |
| Hydrolysis and UV resistance | moderate | low | high | moderate |
Solvent-borne urethane and chloroprene adhesives may provide higher heat resistance or dry-clean durability, but they require explosion-proof coating areas and airborne VOC controls. VAc-acrylate emulsion is selected where waterborne lower-VOC processing is required under EU Directive 2010/75/EU and where the production line lacks solvent recovery. The film is not crosslinked unless functional crosslinkers are added, so it does not match thermoset polyurethane in hot-peel resistance above 100 °C.
Water resistance of the dry film controls backing selection in interlinings, printed nonwovens, and automotive interior trim. VAc-acrylate films have a lower water-whitening tendency than polyvinyl acetate homopolymer because the acrylic ester comonomer disrupts the continuous polyvinyl acetate phase, but the polymer is still more hydrophilic than all-acrylic or vinyl acetate-ethylene films. After 24 h immersion in deionized water at 23 °C, film water absorption is generally 10–25 wt%, and wet peel strength retention on polyester nonwoven may remain at 55–75% of the dry value. For nonwoven scrim bonding, dry peel strength measured by ISO 9073-4 is typically 3–6 N/50 mm at 10–15 g/m² add-on; greater add-on stiffens the laminate and changes hand. The product is suitable for foam-to-fabric bonding with polyether polyurethane foam and brushed polyester or cotton-based face fabrics. Closed-cell foam surfaces require mechanical pre-treatment or the addition of 0.3–0.8 wt% of a silicone-free wetting agent to prevent pinhole holidays and irregular adhesive transfer. In high-humidity lamination environments above 70 % RH, predrying of hygroscopic fabrics is required because retained moisture raises the local dew point and can cause micro-blisters in the adhesive film.
Although the product is often called a thermosetting textile binder when a crosslinker is added, the standard uncrosslinked VAc-acrylate emulsion forms a thermoplastic film. Curing at 120–150 °C for 2–5 min removes water and promotes particle coalescence but does not by itself produce extensive covalent crosslinking. Self-crosslinking textile grades may incorporate diacetone acrylamide and adipic dihydrazide or an added blocked isocyanate; in those systems, crosslinker dosage is usually 0.5–1.5 wt% and a minimum cure temperature of 130 °C is required for insolubility. Ammonia-neutralized thickener residues contribute to film yellowing at 150 °C; volatile amines are preferred over sodium hydroxide where water resistance matters. Prolonged humid aging at 85 °C and 85 % RH for 500 h can reduce tensile retention of uncrosslinked films to below 60% because of ester hydrolysis. The operational boundary is therefore indoor automotive, footwear, or apparel use that does not require continuous wet service or exterior UV exposure. Incompatibility with multivalent metal salts is a practical issue: aluminum sulfate or alum-based coagulants used in process water or latex dipping will gel the carboxylated polymer if local pH falls to 4.0 or lower. Strong acidified wash water and cationic quaternary ammonium cleaning agents can also precipitate the anionic dispersion in narrow feed lines.
Harmonized incoming QC and lot-release checks for this product class are shown below. Values are typical acceptance ranges, and a specific lot certificate of analysis should be used for production setup.
| Parameter | Method or instrument | Acceptance range |
|---|---|---|
| Non-volatile content | ISO 3251 | 50–55 wt% |
| pH | ISO 1148 | 4.5–5.5 |
| Brookfield RVT viscosity | ISO 2555 | 800–1500 mPa·s at 20 rpm and 25 °C |
| Minimum film-forming temperature | ISO 2115 | <5 °C |
| Average particle size | ISO 22412 | 0.20–0.45 μm |
| Free vinyl acetate monomer | ISO 13741-1 | <0.1 wt% |
| Free formaldehyde | EN ISO 14184-1 | <16 ppm |
| APEO content | LC-MS/MS internal | not detected above 10 ppm |
| Grit on 40 mesh screen | wet filtration | <100 ppm |
| Density | ISO 2811 | 1.06–1.09 g/cm³ |
Because the product is anionic, equipment wash water should contain a compatible nonionic surfactant rather than cationic quaternary ammonium compounds; cationic species cause rapid coagulation in narrow-diameter feed lines and rotary-screen mesh cells. Storage in closed totes at 5–35 °C avoids freeze-thaw instability; a single freeze cycle at −5 °C can produce irreversible grit and coagulum. Under those storage conditions, the typical shelf life from manufacture is 6 months, with periodic low-shear mixing recommended to prevent sedimentation.
