| HS Code | 312717 |
| Vinyl Acetate Content | 28 wt% |
| Melt Index 190 C 2 16 Kg | 400 g/10 min |
| Density | 0.954 g/cm³ |
| Melting Point Dsc | 67 °C |
| Ring Ball Softening Point | 96 °C |
| Glass Transition Temperature | -41 °C |
| Tensile Strength At Break | 5.0 MPa |
| Elongation At Break | 800 % |
| Hardness Shore A | 80 |
| Brittleness Temperature | -50 °C |
| Crystallinity | 18 % |
| Vicat Softening Point | 54 °C |
As an accredited Ateva 2842AC EVA Copolymer Resin,28% VA,400 MI,Hot Melt Adhesive Grade factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied as free-flowing pellets in 25 kg multiwall paper bags, palletized and stretch-wrapped for safe transport and storage. |
| Container Loading (20′ FCL) | 20' FCL loaded with 25kg bags of Ateva 2842AC EVA resin, approximately 20 metric tons per container, secure and dry. |
| Shipping | Ateva 2842AC EVA resin is shipped as free-flowing pellets in moisture-protective 25 kg bags, octabins, or bulk sacks. Keep dry, away from direct sunlight, heat, and ignition sources. Standard non-hazardous handling applies; avoid dust accumulation. Ensure containers are sealed during transit to prevent contamination. |
| Storage | Store Ateva 2842AC EVA Copolymer Resin in a cool, dry, well-ventilated area, away from direct sunlight, heat sources, and open flames. Keep containers tightly sealed to prevent moisture absorption and contamination. Maintain moderate temperatures to avoid softening or agglomeration. Use FIFO rotation; protect from physical damage and store separately from incompatible materials. |
| Shelf Life | Store in a cool, dry area away from heat, sunlight, and moisture. Shelf life is one year from date of manufacture. |
On high-speed case erecting and packing lines running at 45–60 cartons per minute, flap spring-back before the compression station remains a failure point tied to insufficient hot tack on clay-coated recycled linerboard. Ateva 2842AC, a 28% vinyl acetate copolymer with a melt mass-flow rate of 400 g/10 min at 190 °C/2.16 kg under ISO 1133-1:2022, is compounded at 30–38 wt% with hydrogenated rosin ester tackifier at 35–42 wt%, Fischer-Tropsch wax at 20–28 wt%, and hindered phenolic antioxidant at 0.5–1.0 wt%. The first-stage batch mixer runs at 150–170 °C jacket temperature under a nitrogen blanket to minimize oxidative gel formation; subsequent transfer through heated hose to an air-actuated slot nozzle is maintained at 150–165 °C. On a case erector, adhesive add-on for top and bottom major flaps is typically 0.8–1.5 g/m per flap pair, with open time on recycled corrugated board at 8–12% moisture limited to 4–8 s. Set time under compression pressure of 0.1–0.3 MPa drops below 2 s, allowing immediate palletizing. Compliance for food packaging closure is covered by FDA 21 CFR 175.105 and EU Regulation EC No 1907/2006; REACH SVHC declarations are required for the tackifier and wax fractions. Terminal finished product types include single-wall and double-wall corrugated cases, die-cut mailers, litho-laminated folding cartons, and bag-in-box outer shells. The operational boundary is a bulk adhesive temperature above 180 °C: hold times exceeding 8 h at this temperature can generate char and gel particles that plug the nozzle and produce intermittent skip-bonding at line speeds above 60 m/min. These addition ratios are starting windows; compatibility with recycled board coatings and wax-grade changes must be validated on the production line because published adhesion data for coated linerboard is limited.
| Component | Typical addition | Process function | Overdose/underdose failure mode |
|---|---|---|---|
| Ateva 2842AC | 30–38 wt% | Cohesive strength, wet-out on clay-coated linerboard | Overdose raises open time and stringing; underdose lowers peel adhesion |
| Hydrogenated rosin ester tackifier | 35–42 wt% | Adhesion to recycled board and mineral coatings | Overdose increases tackifier bleed; underdose reduces hot tack |
| Fischer-Tropsch wax | 20–28 wt% | Set speed, viscosity reduction | Overdose causes cold flex cracking; underdose extends compression time |
| Hindered phenolic antioxidant | 0.5–1.0 wt% | Thermal stabilization during hold time | Overdose can migrate to surface; underdose increases gel formation |
In disposable hygiene converting, continuous film application would compromise breathability and hand feel; the adhesive is therefore delivered as a spiral-spray pattern from a slot die. Ateva 2842AC at 20–28 wt% of the hot melt provides the low-viscosity backbone because its 400 g/10 min melt index permits fiber elongation under nozzle air pressure of 0.06–0.12 MPa without excessive film tearing. The compounded formulation is held at 138–152 °C in a melt reservoir, filtered through a 100–200 μm screen, and dispensed through solenoid air-open modules across a web speed of 300–600 m/min. Add-on is controlled in the range 1.5–3.5 g/m² per spiral line, because below 1.0 g/m² bond strength falls sharply on polyethylene backsheet and above 4.5 g/m² squeeze-through and stiff spots appear. Compliance rests on REACH EC No 1907/2006 and, where the finished article is classified as a medical device, EN ISO 10993-5 and 10993-10 cytotoxicity and skin irritation assessments. Some converters also require absence of rosin ester and methacrylate sensitizers in the formulation. Terminal finished product types include infant diaper elastic attachment, adult incontinence core stabilization, feminine hygiene cuff and acquisition layer bonding, and disposable underpads. The primary production bottleneck is nozzle degradation from high adhesive temperature; hold times above 8 h at 150 °C can increase char formation and produce spiral pattern breakdown.
Perfect binding lines cycling at 8,000–12,000 books per hour impose two adhesive requirements: rapid set for the spine glue and retained flexibility in the hinge after trimming and cooling. Ateva 2842AC is formulated into the hinge adhesive at 30–38 wt% with a tall oil or hydrogenated rosin ester tackifier at 34–42 wt% and a crystallizing wax at 20–28 wt%. The adhesive is applied at 150–168 °C through a wheel applicator or closed nozzle, followed by side gluing and cover attachment, then nipping at 0.2–0.6 MPa for 3–6 s. Cooling tunnels operating at 2–4 °C bring the spine below the wax crystallization transition before stacking. Compliance varies by product class: children’s books frequently require migration limits under EN 71-3; general softcover books are assessed under REACH EC No 1907/2006; and cold flex performance is confirmed by a hinged-mandrel test adapted from ISO 178:2019, with most specifications requiring no visible spine crack after 50 opening cycles at −20 °C. Terminal finished product types include perfect-bound paperbacks, catalogs, annual reports, training manuals, and magazines. A known limitation is that Ateva 2842AC-based body adhesives are not suited to UV-cured binding lines; converters needing lay-flat performance should evaluate a separate primer layer because published page-pull data for this specific single-shot configuration is limited.
A slot-die PSA coating line handles Ateva 2842AC differently from styrenic block copolymers because it cannot be crosslinked by UV/EB and its high-temperature shear resistance is lower than SIS/SBS systems. In this application, Ateva 2842AC is compounded at 20–30 wt% with a C5/C9 tackifier at 30–45 wt%, naphthenic or paraffinic oil at 20–30 wt%, and 0–5 wt% wax. The blend is metered through a gear pump at 150–180 °C onto a silicone-coated release liner or directly onto a corona-treated polypropylene film at 20–60 g/m² coat weight. Laminating to facestock occurs downstream in a chilled nip before slitting. Compliance for food-contact labels is covered under FDA 21 CFR 175.105 provided the adhesive layer does not directly contact food in a way exceeding the intended conditions; direct food contact is not supported. Peel adhesion and loop tack are evaluated under PSTC-101 and PSTC-16; users should request supplier-specific data because published values for this specific Ateva grade are limited for barrier facestocks. Terminal finished product types include box sealing tape, general-purpose label stock, protective masking films for appliances, and double-sided tissue tabs. The upper service temperature of such PSA is generally limited to 50 °C; exposure beyond that results in cohesive failure under shear loads.
Pre-coated edgebanding is reactivated for profile wrapping at a surface temperature of 180–200 °C, a window that requires the adhesive to melt quickly but not sag from the banding before contact. Ateva 2842AC at 30–40 wt% is combined with a rosin ester tackifier at 30–40 wt%, calcium carbonate filler at 15–25 wt%, and wax at 5–10 wt% to generate the required cohesive strength after cooling. The pre-coating process uses a slot die or heated roller running at 20–45 m/min, after which the edgebanding is cooled and wound. At the furniture plant, activation occurs by a hot air or infrared tunnel, followed by pressure rollers at 0.2–0.8 MPa on medium-density fibreboard or particleboard edges. For filled pre-coat granules, compounding in a co-rotating twin-screw extruder with an L/D of 40:1 at 130–150 °C melt temperature avoids localized thermal degradation caused by high filler surface area. Compounded filled granules should be pre-dried at 60 °C for 2 h when storage relative humidity exceeds 60% to prevent foaming in the coater. Compliance does not derive from structural wood adhesive standards because edgebanding is nonstructural; the operative chemical restrictions are RoHS Directive 2011/65/EU and REACH EC No 1907/2006. Terminal finished product types include kitchen cabinet doors, office desk edges, wardrobe side panels, and retail fixture shelves. This filled system is not suitable for exterior exposure or prolonged water immersion because ester linkages in EVA and rosin ester are susceptible to hydrolysis under sustained high humidity.
Interior trim lamination requires a low-odor adhesive film or web that can bond polyethylene nonwoven, open-cell polyurethane foam, and crosslinked polyethylene foam without collapsing the substrate. Ateva 2842AC is incorporated at 25–35 wt% with a fully hydrogenated tackifier and a high-melting synthetic wax to balance flow control. The adhesive film is extruded at 5–20 g/m², then laminating occurs in a vacuum or flatbed thermoforming press at 130–150 °C for 20–40 s, followed by cooling in a contoured die to retain shape. Compliance is dominated by the OEM odor and fogging protocol based on VDA 278 thermal desorption, with limits typically set per platform; the adhesive supplier is expected to report total VOC and FOG emissions rather than claim blanket compliance. REACH EC No 1907/2006 and the EU End-of-Life Vehicle Directive 2000/53/EC also require declaration of heavy metals and restricted substances. Terminal finished product types include automotive headliners, door panel inserts, seat back map pockets, and parcel shelf covers. Batch-to-batch viscosity drift is a known production issue on gravure coating lines; incoming melt index should be verified under ISO 1133-1:2022 and held within agreed limits to avoid film thickness variation. Ateva 2842AC is not combined with acid-modified adhesion promoters or amine-based processing aids in this application because ester linkage cleavage can compromise long-term laminate integrity.
Competitive Ateva 2842AC EVA Copolymer Resin,28% VA,400 MI,Hot Melt Adhesive Grade 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!
| Property/response | Ateva 2842AC | Lower MI EVA with similar VA | Processing consequence |
|---|---|---|---|
| Melt index ASTM D1238 | 400 g/10 min | 25–150 g/10 min | Lower application viscosity and lower pump pressure |
| Melt viscosity at 180°C | lower | higher | Thinner coating, shorter open time, higher penetration |
| Shear adhesion failure temperature ASTM D4498 | typically lower | typically higher | Reduced hot-load resistance |
| Green strength | develops more slowly in some formulations | faster | Longer compression or cooling time |
| Tackifier compatibility | high | high | Similar polar tackifier range |
| Standard/regulation | Scope | Typical test condition |
|---|---|---|
| ASTM D1238 | Melt flow rate | 190°C, 2.16 kg |
| ISO 1133-1:2022 | Melt mass-flow rate | 190°C, 2.16 kg |
| ASTM D3418/ISO 11357-3 | DSC melting and crystallization | 10°C/min heating/cooling |
| FDA 21 CFR 177.1350 | EVA copolymers for food contact | Formulation- and migration-specific |
| EU 10/2011 | Food-contact plastics | Overall and specific migration |
| REACH | Registration and SVHC compliance | Grade-specific substance identity |
