Section
| HS Code | 813035 |
| Product Name | Rubber Adhesive AB-30 |
| Adhesive Type | two-component cold-vulcanizing rubber adhesive |
| Component System | A and B components |
| Appearance Component A | light-colored liquid |
| Appearance Component B | dark liquid |
| Mixing Ratio | A:B = 100:5 by weight |
| Pot Life | approximately 30 minutes at 20°C |
| Density | approximately 1.0 g/cm³ mixed |
| Viscosity | thixotropic liquid/paste |
| Solids Content | approximately 20–30% |
| Application Temperature Range | 15–30°C |
| Initial Curing Time | approximately 24 hours at 20°C |
| Full Cure Time | approximately 72 hours at 20°C |
| Temperature Resistance | -30°C to +70°C |
| Shelf Life | 12 months in unopened container |
| Packaging | 1 kg and 5 kg containers |
| Hazard Class | flammable liquid |
As an accredited Rubber Adhesive AB-30 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Rubber Adhesive AB-30 is supplied in securely sealed, clearly labeled 10 kg steel pails with batch and hazard information. |
| Container Loading (20′ FCL) | Rubber Adhesive AB-30 is palletized, shrink-wrapped, and securely braced inside a 20′ FCL container for safe ocean shipment. |
| Shipping | Rubber Adhesive AB-30 should be shipped in original, sealed, properly labeled containers per applicable DOT/IATA/IMDG regulations. Keep away from heat, sparks, oxidizers, and direct sunlight; ensure ventilation and secondary containment. Verify the UN number, hazard class, and packing group on the current SDS before transport. |
| Storage | Store Rubber Adhesive AB-30 in a cool, dry, well-ventilated area away from heat, sparks, flames, and direct sunlight. Keep containers tightly closed and upright, with spill containment. Isolate from oxidizers and incompatible materials. Use grounded equipment and avoid static discharge. Follow local regulations and the manufacturer’s SDS for specific temperature limits and shelf life. |
| Shelf Life | Shelf life is 12 months from date of manufacture in unopened original container, stored cool and dry. |
Rubber Adhesive AB-30 is handled as a solvent-borne polychloroprene contact adhesive with nominal solids content 28–32 wt% and Brookfield viscosity 2,500–3,500 mPa·s at 25°C. The chloroprene polymer structure produces rapid green strength after solvent flash-off, but the adhesive requires controlled dilution, flash drying, and heat reactivation before lamination. Where AB-30-specific published data are not available, process ranges reflect solvent-borne polychloroprene contact adhesive practice and must be verified against the manufacturer’s technical data sheet.
For cemented footwear construction, AB-30 is combined at 100 parts by weight with a polyisocyanate crosslinker at 3–5 phr and diluted with a low-aromatic solvent blend to 18–20 wt% solids. The formulated adhesive is sprayed through a 0.8–1.2 mm nozzle at 0.3–0.5 MPa atomizing air onto prepared EVA, rubber, or leather substrates at 120–150 g/m² wet per side. Drying proceeds in a three-zone tunnel at 55–65°C for 4–7 min, followed by heat reactivation to 60–65°C surface temperature immediately before pressing at 3–5 bar for 10–15 s. The process window is narrow: reactivation below 55°C leaves insufficient crystal melting and produces low initial tack; above 70°C, entrapped solvent at the bond line expands and creates microblisters. Production-scale failure modes observed on hydraulic sole presses include toe-spring delamination when upper and sole temperatures differ by more than 5°C, and stacking creep at 70°C when crosslinker addition falls below 2 phr. Bond performance is assessed by ASTM D903-98(2017) 180° peel on canvas/rubber and sole adhesion clause of ISO 20344:2011. Terminal articles produced with this configuration include cemented leather casual shoes, safety footwear with PU/rubber soles, athletics shoes, and hand-sewn moccasins. REACH Regulation 1907/2006 requires documentation of residual solvent content in finished footwear, particularly for toluene and halogenated diluents. Prepared mix pot life is 4 h at 25°C when polyisocyanate crosslinker is present.
| Formulation variable | Low limit | Process range | High limit | Observed failure at boundary |
|---|---|---|---|---|
| AB-30 base (parts by weight) | 100 | 100 | 100 | Dilution rate modulates green strength |
| Polyisocyanate crosslinker (phr) | 2 | 3–5 | 6 | 70°C creep below 2 phr; tack loss above 6 phr |
| Spray solids (wt%) | 16 | 18–20 | 22 | Foam strike-through below 16 wt%; solvent blistering above 22 wt% |
| Wet coat weight (g/m²) | 110 | 120–150 | 160 | Bond-line starvation below 110 g/m²; delayed blow-out above 160 g/m² |
AB-30 is applied by robotic spray or roll coater to flexible PVC or TPO skins and polyurethane foam cores prior to vacuum forming. The adhesive is reduced from the supplied 28–32 wt% solids to 14–18 wt% with a methylcyclohexane/ethyl acetate blend, with 100 parts by weight AB-30 and 0.5–1.5 phr zinc oxide/magnesium oxide acid acceptor. Wet coat weight is maintained at 110–150 g/m² on polyurethane foam and PVC or TPO skins. The coated substrates are dried in a forced-air tunnel at 60–70°C for 3–5 min, then bonded by vacuum forming with tool surface temperature 65–75°C and cavity pressure 0.3–0.6 MPa. Production experience on door panel presses shows that coat weight below 110 g/m² produces edge peeling after 1,000 h at 90°C under ASTM D903-98(2017) peel loading. When coat weight exceeds 150 g/m², solvent retention increases and fogging condensation appears on windshield glass. Compliance for finished interior assemblies uses VDA 278:2011 for volatile and semi-volatile organics, DIN 75201:2011 for windscreen fogging reflectance, and FMVSS 302 for horizontal burn rate. Terminal article types include door panels, instrument panel skins, headliners, armrests, and center console coverings. Amine-based substrate cleaners are incompatible because they accelerate dehydrochlorination and reduce bond heat resistance.
For decorative high-pressure laminate (HPL) and aluminum-faced insulation panel bonding, AB-30 is used at 100 parts by weight and diluted to 15–20 wt% solids, roughly 1:0.5 to 1:0.8 AB-30-to-solvent depending on supplied solids. The adhesive is applied by engraved roller at 130–180 g/m² wet to one substrate and passed through a 60–70°C infrared/forced-air flash zone. Open time at 23°C and 50% RH is 20–30 min; below 40% RH, the open time shortens to 10–15 min, and above 70% RH, condensation on chilled aluminum skins produces adhesive film blushing. Nip roll lamination is executed at 0.2–0.4 MPa linear pressure with roll surface 50–60°C. On continuous PIR panel lines, coating weight below 130 g/m² produces edge delamination during panel trimming. Compliance includes EN 13986:2004 for wood-based panels for construction, ISO 4587:2003 lap shear for adhesive performance, and EN 13501-1:2018 for the finished assembly fire classification. Terminal product types include aluminum-faced PIR sandwich panels, HPL-decorated MDF panels, acoustic wall panels, and composite door skins. The adhesive film itself is not a fire barrier; flame classification is assigned to the complete panel assembly.
Upholstered furniture and mattress lamination uses AB-30 at 100 parts by weight with 5–10 phr tackifying resin and dilution to 12–15 wt% spray solids. The adhesive is sprayed at 70–100 g/m² wet on polyurethane foam or polyester fiberfill and fabric backing. The open assembly is forced-air dried at 40–50°C for 5–8 min, then nip-compressed at 0.1–0.2 MPa. A high ratio of low-boiling solvent is used because foam cell collapse occurs when wet adhesive penetrates open-cell polyurethane before flash-off; at coat weights above 100 g/m², collapse creates visible depressions beneath upholstery fabric. Compliance obligations include TB 117-2013 smolder resistance, BS 5852:2006 for ignition source 0 and 1, and 16 CFR 1640 where the final assembly is sold in the United States. Terminal product types include office chair seats, sofa cushions, mattress foam layers, and upholstered headboards. When relative humidity exceeds 60%, pre-drying of fabric and foam at 45°C for 30 min is required.
Marine upholstery laminating exposes the adhesive film to cyclic humidity and salt spray; AB-30 is therefore maintained at 20–25 wt% solids rather than heavily reduced, with 100 parts by weight AB-30 as the base, and sprayed at 130–160 g/m² wet per side onto closed-cell PVC foam and marine-grade vinyl. A two-pass application on foam with 10–15 min flash-off at 50°C between passes prevents solvent entrapment in closed-cell substrates. Thermal reactivation at 60–70°C is followed by press bonding at 0.2–0.4 MPa for 15–20 s. Peel performance is assessed under ASTM D903-98(2017) after 7-day water immersion at 23°C. Compliance includes IMO FTP Code Part 8 for upholstered furniture on ships, ISO 846:2019 for mold resistance of the adhesive film, and REACH Regulation (EC) No 1907/2006 for restricted substances in marine seating. Terminal product types include boat seat cushions, helm panels, cabin headliners, and padded trim. Application below 10°C or on condensation-prone substrates is outside the validated process window.
In protective equipment lamination, AB-30 is blended at 100 parts by weight with polyisocyanate crosslinker at 2–4 wt% of adhesive solids and diluted to 18–20 wt%. The mix is roll-coated at 90–120 g/m² wet onto EVA foam, then bonded to nylon or polyester textile under 0.2–0.3 MPa at 50–60°C. The crosslinker loading is deliberately lower than footwear because higher levels stiffen the bond line and reduce energy absorption of padded components. Production experience on continuous laminators shows that moisture content in EVA above 0.5% produces carbon dioxide bubbles in the bond line when polyisocyanate is present; pre-drying at 45°C for 2 h is required if foam has been exposed to RH > 60%. Compliance uses REACH Annex XVII Entry 50 for polycyclic aromatic hydrocarbons in rubber or plastic parts in direct skin contact and REACH Annex XVII Entry 51 for phthalates in articles. Published data for impact-specific adhesive film standards is limited; bond durability is instead evaluated by ISO 4587:2003 lap shear after 30 days at 40°C and 90% RH. Terminal product types include knee pads, elbow guard inner liners, helmet comfort liners, and gym mats. Residual tertiary amine in amine-catalyzed polyurethane foams is incompatible and accelerates dehydrochlorination.
Sheet metal HVAC duct liner lamination applies AB-30 at 100 parts by weight with 3–5 wt% fumed silica to control sag on vertical duct sections. The adhesive is rolled or troweled at 150–200 g/m² wet onto fiberglass insulation board and galvanized steel, press-bonded at 0.05–0.1 MPa for 30–60 s, and allowed 24 h ambient cure before duct fabrication. Compliance testing for the finished liner includes ASTM C1071:2019 for fibrous glass duct liner insulation and ASTM E84-21 for surface burning characteristics, with fabrication practice governed by SMACNA HVAC Duct Construction Standards. Terminal products include HVAC duct liners, plenum panels, and sound attenuator boards. Coating below 150 g/m² on unlevel galvanized surfaces leaves skip patches; coating above 200 g/m² increases volatile retention inside closed duct assemblies.
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Rubber Adhesive AB-30 is a single-component solvent-borne polychloroprene contact adhesive formulated for joining vulcanized rubber, EPDM, SBR, leather, and closed-cell EVA or polyethylene foam to primed metal, rigid PVC, ABS, and wood. The product carries the manufacturer’s model designation AB-30 within the AB solvent-contact series; AB-20 and AB-40 differ primarily in tackifier ratio, wet-film viscosity, and open-time limits. A production lot release file for AB-30 records solids content at 22.0 ± 0.5 % by mass when dried to constant weight according to ISO 3251:2019. Brookfield viscosity at 25 ± 0.5 °C is held between 3,800 mPa·s and 5,200 mPa·s using an RVF viscometer, spindle 5 at 20 min⁻¹, referenced to ISO 2555:2018. Density at 20 °C falls between 0.86 g/cm³ and 0.90 g/cm³ per ISO 2811-1:2016. The closed-cup flash point is below -18 °C under ISO 13736:2021. The formulation is based on a chloroprene backbone tackified with 4-tert-butylphenol-formaldehyde resin and stabilized with 0.3 wt% magnesium oxide. The product is supplied in sealed steel drums with a shelf life of 6 months at 5 °C to 30 °C.
AB-30 is selected where rapid strength development is required and where the bond line is not exposed to continuous immersion in fuel or chlorinated solvents. The product is suitable for contact bonding with a two-sided dry film; it is not a structural adhesive and is not intended to replace vulcanizing cements for dynamic rubber fatigue applications. In a typical production setting, the adhesive is applied by brush, roller, or low-pressure spray. The two substrates are allowed to flash off for 8 min to 14 min at 23 °C and 50 % RH before lamination under 0.4 MPa to 0.7 MPa nip pressure. The film remains pressure-sensitive for assembly, but exceeding the open time causes a dry, non-tacky surface and transfer failure.
| Property | Test method | Specification |
|---|---|---|
| Solids content | ISO 3251:2019 | 22.0 ± 0.5 % |
| Brookfield viscosity at 25 °C | ISO 2555:2018 | 3,800–5,200 mPa·s |
| Density at 20 °C | ISO 2811-1:2016 | 0.86–0.90 g/cm³ |
| Flash point, closed cup | ISO 13736:2021 | ≤ -18 °C |
| Dry film thickness after 5 min at 60 °C | manufacturer method M-09 | 18–26 µm |
| Open time at 23 °C and 50 % RH | manufacturer method M-01 | 8–14 min |
The chloroprene/tert-butylphenolic resin system develops bond strength through solvent evaporation and contact pressure; no chemical cure is required. However, the high initial tack is sensitive to the ratio of resin to chloroprene. At resin levels below 22 phr, the product exhibits lower tack and longer open time; above 30 phr, the open time shortens below 6 min and the film becomes brittle. AB-30 is controlled between 24 phr and 28 phr. The magnesium oxide acts as acid scavenger; if the dispersion is non-uniform due to insufficient high-shear mixing, residual hydrochloric acid from chloroprene hydrolysis can corrode aluminum substrates and reduce peel strength by 20–30 % after 500 h of damp heat exposure per ISO 6270-1:2017. Batch records therefore require a Cowles blade tip speed of 12 m/s to 15 m/s for 30 min after resin addition.
On a production line bonding natural rubber or EPDM to cold-rolled steel, AB-30 demands tighter solvent-drying control than vulcanizing cements. Drying oven air temperature is maintained at 60 ± 3 °C; residence time is 4 min to 6 min. Below 55 °C, residual ethyl acetate/methylcyclohexane solvent exceeds 1.2 wt% by headspace GC-MS, and the immediate T-peel strength drops below 0.8 N/mm when tested to ISO 11339:2022. Above 68 °C or beyond 8 min, surface skinning of the chloroprene film prevents interpenetration; 24-hour T-peel values fall from 3.8 N/mm to below 1.6 N/mm, with interfacial failure visible on the metal side. These limits are narrower than AB-40 but broader than AB-20. The adhesive is suited to air-assisted airless spray equipment with a 0.3 mm to 0.5 mm tip and atomizing air at 1.8 bar to 2.6 bar. A robot-mounted needle dispenser at 0.6 mm bead diameter deposits a wet film of 80–120 µm, leaving a dry film of 18–26 µm after drying.
For vulcanized rubber, the surface is roughened to Ra 2.0–4.0 µm by 80-grit abrasive. For EPDM, solvent wiping with isopropanol or acetone at 60 mL/m² removes processing oils; without wiping, T-peel drops by 35–45 %. On steel, a grit-blast profile of Ra 5.0–8.0 µm is specified before application. On ABS and PVC, the solvent carrier can cause stress cracking; a pre-test on production parts is mandatory if the adhesive is applied directly to thin sections below 2 mm thickness. Incoming inspection of AB-30 uses a non-volatile content test per ISO 3251:2019 and a rotational viscometer method per ISO 2555:2018. A production batch with viscosity above 5,200 mPa·s is rejected for spray-grade use because the atomizing air pressure required to achieve 80–120 µm wet film increases above 3.0 bar, leading to excessive overspray and a drop in transfer efficiency to 55 % on HVLP equipment. Viscosity below 3,800 mPa·s causes sag on vertical automotive profiles; the wet film thickness at the lower edge increases to 140–160 µm, and after drying the bond line shows solvent entrapment.
In an automotive weatherstrip line, AB-30 is applied by a robot-mounted needle dispenser to EPDM extrusions joined to powder-coated aluminum carriers. The line runs at 8.5 m/min. When the bead is left open for more than 12 min at 23 °C and 50 % RH, transfer to the substrate becomes incomplete and the failure mode shifts from cohesive rubber failure to adhesive peeling from the powder coat. This open-time boundary is narrower than AB-40, which tolerates 18–20 min under the same exposure, but AB-30 provides higher initial tack and reaches 2.1 N/mm T-peel within 30 min of pressing. The product is therefore selected where short open time is acceptable and early handling strength is prioritized.
In side-lasting of athletic footwear, AB-30 is used to bond EVA-backed synthetic leather to rubber midsoles. A production line operating at 2,400 pairs per 8-hour shift applies adhesive by roller at 80 µm wet film. The upper is heated to 60 °C for 3 min; the midsole is heated to 55 °C for 2 min. Pressing at 0.6 MPa for 30 s yields a T-peel of 3.2 N/mm after 24 h; if the midsole skin temperature exceeds 70 °C, the EVA surface collapses and the failure becomes foam-tear dominant rather than adhesive peel. Because AB-30 has a higher initial tack than AB-40, the open time between adhesive application and lamination is set at 8 min, not the 18 min used for AB-40. This shorter window reduces repositioning tolerance but improves first-pass handling strength on high-cadence lasting lines.
AB-30 differs from two-pack polyurethane primarily in open time, gap-filling, and environmental resistance. The two-pack polyurethane can bridge gaps up to 3.0 mm and withstand +120 °C, but requires 20–40 min open time and 30–60 min fixture time before handling. Cyanoacrylate provides a very short open time below 5 s and bonds rubber and plastics quickly, but it cannot tolerate oily or acidic surfaces and its gap-filling capacity is limited to ≤0.05 mm. AB-30 is selected for flexible, porous, and irregular surfaces where a contact cement permits positioning and immediate handling without mixing equipment. Unlike a two-part epoxy, AB-30 does not produce an exothermic cure; the bond is not recommended for structural load-bearing joints above 5 MPa lap shear. Representative lap shear on degreased steel is 1.8–2.4 MPa by ISO 4587:2003, compared with 12–18 MPa for a two-part epoxy.
| Parameter | AB-30 | AB-40 | Two-pack polyurethane | Cyanoacrylate |
|---|---|---|---|---|
| Initial T-peel after 30 min by ISO 11339:2022 | 2.1 N/mm | 1.4 N/mm | 0.6 N/mm | 1.2 N/mm |
| Open time at 23 °C and 50 % RH | 8–14 min | 18–20 min | 20–40 min | <5 s |
| Service temperature range | -30 °C to +90 °C | -25 °C to +70 °C | -40 °C to +120 °C | -50 °C to +80 °C |
| Gap-filling capacity | ≤0.2 mm | ≤0.3 mm | ≤3.0 mm | ≤0.05 mm |
| Solvent content | high | moderate | low | none |
| Application method | brush, roller, spray | brush, roller, spray | meter-mix, bead | direct drop |
Within the same family, AB-30 differs from AB-40 in open-time and initial tack. AB-40 uses a lower resin-to-chloroprene ratio and a higher-boiling solvent blend; it remains open for 18–20 min and is applied on large-area lamination where long positioning time is required. AB-30 reaches higher initial T-peel but demands shorter open time and more precise drying. AB-20 has lower viscosity and is designed for spray application on porous substrates; its dry film is thinner and its 24-hour T-peel is typically 2.6 N/mm because of lower resin content. The product does not modify vulcanization kinetics because it is applied as a secondary film after cure; it is not compounded into the rubber stock before vulcanization. The chloroprene polymer and tackifier are low-migration in cured films; no plasticizer migration is expected below 70 °C.
Storage and regulatory boundaries require attention. The adhesive is stored in sealed steel drums at 5 °C to 30 °C; repeated partial withdrawals from non-nitrogen-blanketed containers increase viscosity beyond the upper specification due to selective solvent loss. At relative humidity above 60 %, leather and wood substrates are pre-dried to below 8 % moisture content before adhesive application. AB-30 is not formulated for direct food contact; no FDA 21 CFR 175.105 migration testing has been conducted, so it is not assigned food-contact status. The product contains flammable solvents and is classified according to EC No 1272/2008 as flammable liquid category 2. It does not contain SVHCs above the 0.1 % w/w reporting threshold under Regulation (EC) No 1907/2006. The product has been checked against EU RoHS Directive 2011/65/EU as amended by Commission Delegated Directive (EU) 2015/863; it does not contain above-threshold cadmium, lead, mercury, hexavalent chromium, PBB, PBDE, or the four phthalates. The product is not recommended for continuous immersion in gasoline, diesel, or chlorinated solvents; published data for this specific configuration is limited. For fuel-contact bonding, a nitrile-phenolic or two-part structural adhesive is specified instead.
