| HS Code | 147597 |
| Vinyl Acetate Content | 28 wt% |
| Melt Flow Rate | 55 g/10 min |
| Density | 0.95 g/cm³ |
| Melting Point | 67 °C |
| Vicat Softening Point | 46 °C |
| Tensile Strength At Break | 8 MPa |
| Elongation At Break | 800 % |
| Shore A Hardness | 85 |
| Glass Transition Temperature | -40 °C |
| Brittleness Temperature | -60 °C |
| Refractive Index | 1.48 |
As an accredited PRIMEVA P40055 EVA Copolymer Resin,Adhesive & Sealant Grade factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied in 25 kg bags, PRIMEVA P40055 EVA copolymer resin pellets are packaged for safe handling and efficient adhesive/sealant processing. |
| Container Loading (20′ FCL) | Container loading of 20′ FCL with PRIMEVA P40055 EVA copolymer resin, adhesive and sealant grade, packed securely for safe transport. |
| Shipping | PRIMEVA P40055 EVA Copolymer Resin ships as non-hazardous pellets in sealed multi-wall bags or supersacks. Protect from moisture, heat, and direct sunlight during transit. Store in a dry, ventilated area. Avoid sharp impacts to prevent bag rupture. Standard truck or container shipping is suitable. |
| Storage | Store PRIMEVA P40055 EVA Copolymer Resin in a cool, dry, well-ventilated area away from direct sunlight, heat, and ignition sources. Keep containers tightly sealed to prevent moisture pickup and contamination. Avoid dusty conditions; use proper grounding to prevent static accumulation. Under recommended conditions, shelf life is typically maintained for up to two years. |
| Shelf Life | PRIMEVA P40055 has a shelf life of two years when stored in original packaging in a cool, dry place. |
In corrugated case and carton converting, PRIMEVA P40055 is introduced as a high-vinyl-acetate backbone resin in hot-melt formulations where fiber-tearing adhesion at -18 °C per ASTM D1876-19 and case-erector line speeds above 200 m/min are specified. The nominal vinyl acetate content of 40 wt% and melt mass-flow rate of 55 g/10 min under ISO 1133-1:2022 at 190 °C/2.16 kg increase polarity toward coated recycled board and clay-coated stock, while addition ratio governs cohesive strength and cold flexibility. Typical formulation addition for PRIMEVA P40055 in case and carton sealing ranges from 22 wt% to 38 wt% of total adhesive mass, with rosin ester tackifier at 35–50 wt% and Fischer-Tropsch wax at 10–20 wt%. For food-contact case sealing, the compounded adhesive is evaluated under FDA 21 CFR 175.105; where the filled carton contacts fatty or aqueous food, EU Regulation 10/2011 migration testing is performed on the finished laminate. Processing is carried out in heated melt tanks of 50–200 kg capacity using platen or gear-pump transfer at 160–175 °C, followed by deposition through multi-line slot nozzles or wheel applicators at 170–180 °C. Adhesive viscosity is maintained within the range 800–1,800 mPa·s at 180 °C per ASTM D3236-88(2021), and ring-and-ball softening point is controlled at 85–105 °C per ASTM E28-18. Equipment operators observe that tank charring accelerates above 195 °C if oxygen exclusion is inadequate; therefore nitrogen blanketing or sealed melt reservoirs are specified in continuous converting operations. Finished articles include corrugated shippers, ream wrap closures, folded carton side seams, tray erecting, and case-in-case packaging.
The function of PRIMEVA P40055 in perfect binding is to lower the glass-transition influence of conventional EVA grades in spine hinge areas while retaining sufficient melt viscosity to avoid excessive penetration into uncoated paper stock. In this segment, PRIMEVA P40055 is compounded at 30–45 wt%, with rosin or hydrocarbon tackifier at 30–40 wt% and microcrystalline wax at 12–20 wt%; open time is adjusted to 5–10 s and setting time to 3–6 s on a 15-clamp perfect binder. Application runs at 160–170 °C for the spine coat and 175–185 °C for side glue, with 0.2–0.4 MPa nipping pressure. Standards include ASTM D4498-07 for heat-fail temperature and ASTM D1876-19 for T-peel resistance; EU compliance is maintained under REACH 1907/2006, with FDA 21 CFR 175.105 where overwrap contacts food. Finished articles include perfect-bound paperbacks, catalogs, annual reports, and thread-sewn book blocks.
On high-speed edge-banding lines for melamine-faced MDF and particleboard, PRIMEVA P40055 is formulated at 20–35 wt% with EVA-compatible tackifier at 25–40 wt%, Fischer-Tropsch or paraffin wax at 10–18 wt%, and ground calcium carbonate filler at 15–30 wt%. Processing occurs on edge-banding machines with heated reservoirs at 180–200 °C, roller or slot application units, and pressing rollers operating at 15–30 m/min; open time below 0.5 s at line speeds above 25 m/min produces insufficient wet-out, while stoppages longer than 2 s generate char above 200 °C. Block shear strength is tested per ASTM D4501-01(2014), peel adhesion per ASTM D1876-19 after 24 h conditioning at 23 °C/50% RH, and indoor VOC emissions per ISO 16000-6:2021 for EU furniture. Finished articles include kitchen cabinet panel edges, office desking, wardrobe components, and retail fixture panels.
PRIMEVA P40055 is utilized in automotive interior adhesives where low-pressure forming of decorative coverstock to polypropylene door panel substrates requires delayed crystalline set and high polar wetting. The resin is incorporated at 15–30 wt% of the adhesive compound, alongside styrenic block copolymer or amorphous poly-alpha-olefin modifiers at 20–35 wt%, hydrogenated tackifier at 25–40 wt%, and paraffinic process oil at 5–12 wt%. Adhesive application is performed with heated slot-die coaters having shim thickness of 150–250 µm or roll coaters at 140–160 °C; coverstock lamination proceeds through heated nip rolls at 0.2–0.5 MPa and line speeds of 5–18 m/min. Nip face temperature is monitored with infrared pyrometers at 90–130 °C to prevent surface film cooling below the crystalline set point, and coat weight is controlled between 20 g/m² and 60 g/m² to prevent soak-through on PET felt while maintaining bond strength. Because untreated polypropylene exhibits surface energy below 32 mN/m, corona or flame treatment to 40–46 mN/m is required before adhesive transfer; omission of pre-treatment results in adhesive transfer failure at the substrate interface. Qualification protocols for interior assemblies include VDA 278:2011 for VOC and FOG emissions, ISO 6452:2007 for fogging characteristics of trim materials, and ASTM D1002-10(2019) for lap shear strength of metal-to-metal test specimens as a batch consistency check. Supply-chain documentation under IATF 16949:2016 supports PPAP submissions for automotive-tier adhesive compounds. Finished article types include door panel inserts, headliner edges, seat back pockets, floor carpet attachment, and instrument panel wrap-lamination. Published data for the specific PRIMEVA P40055 formulation in this configuration is limited; process validation is therefore conducted on production-scale laminating lines with instrumented nip temperature monitoring.
| Application segment | Standard designation | Test or assessment target | Application condition |
|---|---|---|---|
| Corrugated case/carton sealing | FDA 21 CFR 175.105; ASTM D3236-88(2021) | Food-contact adhesive status; hot-melt viscosity at 180 °C | Food-contact or non-food shipper closure |
| Perfect-bound books | ASTM D4498-07; ASTM D1876-19 | Heat-fail temperature in shear; T-peel adhesion | Paperstock and cover stock qualification |
| Edge banding | ASTM D4501-01(2014); ISO 16000-6:2021 | Block shear on wood assemblies; indoor VOC emission | Furniture panel production |
| Automotive interior lamination | VDA 278:2011; ISO 6452:2007 | VOC/FOG emission; fogging of trim materials | PP and ABS interior panels |
| Bituminous waterproofing | ASTM D1970-21; ASTM D903-17 | Self-adhering underlayment performance; peel adhesion to primed concrete | Roofing underlayment and flashing tape |
| HVAC filter assembly | ASTM D4498-07; ISO 5011:2020 | Heat-fail temperature; filter element performance | Pleated panel filter construction |
In bituminous self-adhered waterproofing membranes and sealing tapes, PRIMEVA P40055 acts as a thermoplastic modifier that adjusts low-temperature flexibility and reduces cold-flow at service temperatures above 40 °C. Compounding addition is lower than in hot-melt adhesive applications, typically 5–15 wt% of the bituminous adhesive compound, with oxidized bitumen at 45–60 wt%, styrene-butadiene-styrene or styrene-butadiene rubber at 8–15 wt%, mineral filler at 15–30 wt%, and aromatic or naphthenic process oil at 0–8 wt%. Blending is executed in high-shear mixers or heated kneaders at 170–190 °C under vacuum or inert gas; the modified compound is then coated onto HDPE or polyester carrier film through slot-die or roller coating at 160–180 °C, followed by silicone release liner application and cooling. Adhesive layer thickness is controlled in the 0.5–1.5 mm range to balance peel strength and cold-flow resistance. Important operational boundary: exceeding 18 wt% EVA content without sufficient aromatic process oil produces phase separation and a drop in peel adhesion to primed concrete, particularly below 5 °C. Conformity assessment for the finished membrane references ASTM D1970-21 for self-adhering polymer-modified bituminous sheet materials used as steep-roofing underlayment, ASTM D903-17 for 180° peel adhesion to primed concrete, and EN 13707:2004 for flexible sheets for waterproofing where EU construction product regulation applies. Finished articles include self-adhered roofing underlayments, below-grade waterproofing membranes, pipe penetration tapes, and window flashing tapes.
The specification of PRIMEVA P40055 in filter frame assembly hot melts is driven by the need for fast set on aluminum, polyester, and polyurethane filter media while maintaining sufficient cohesion under differential air pressure. Addition levels in this segment range from 20–35 wt% of the adhesive formulation, with hydrocarbon tackifier at 30–45 wt%, microcrystalline wax at 10–18 wt%, and anti-oxidant stabilizer at 0.1–0.3 wt%. Application equipment includes pneumatic or gear-pump hot melt guns and bead extrusion heads operating at 150–170 °C; adhesive is applied as interrupted beads of 1–3 mm diameter to pleated media packs before frame placement and compression at 0.1–0.3 MPa for 2–5 s. The primary failure mode observed on production lines is cohesive splitting at the bond line when wax content exceeds 20 wt% or when tackifier softening point drops below 95 °C; conversely, a tackifier softening point above 115 °C reduces wet-out on low-surface-energy polyester media. Batch release testing for filter adhesives cites ASTM D1876-19 for T-peel adhesion, ASTM D4498-07 for heat-fail temperature in shear, and ISO 5011:2020 for air cleaner element performance where product claims involve filtration efficiency and pressure drop. EU regulatory compliance is maintained under REACH 1907/2006; UL 900 flammability classification applies to the complete filter assembly rather than the adhesive alone. Finished article types include pleated HVAC panel filters, cabin air filters, vacuum cleaner exhaust filters, and paint booth intake filters.
Competitive PRIMEVA P40055 EVA Copolymer Resin,Adhesive & Sealant 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!
PRIMEVA P40055 is an ethylene-vinyl acetate copolymer resin supplied as pelletized raw material for hot-melt adhesive and sealant compounding. The grade is classified as a high vinyl acetate, medium melt flow product: nominal vinyl acetate content is 40 wt% and nominal melt flow rate is 55 g/10 min at 190 °C under 2.16 kg load according to ISO 1133-1:2022. These two parameters define the primary functional position of the resin. The elevated comonomer content suppresses crystallinity, broadens the melting interval, and increases polarity relative to conventional packaging EVA copolymers containing 18–28 wt% vinyl acetate. The medium melt flow rate permits application at moderate temperatures while retaining sufficient cohesive strength after solidification.
Typical physical property values reported for this grade category in industrial technical literature are summarized in Table 1. Specimens are conditioned at 23 ± 2 °C and 50 ± 5 % relative humidity for 40 h according to ISO 291:2008 unless otherwise specified. Actual values on a certificate of analysis may vary within the manufacturer’s accepted lot-to-lot range.
| Property | Test Standard | Typical Value | Unit |
|---|---|---|---|
| Vinyl acetate content | ASTM D5594 | 40 | wt% |
| Melt flow rate at 190 °C / 2.16 kg | ISO 1133-1:2022 | 55 | g/10 min |
| Density at 23 °C | ISO 1183-1:2019 | 0.97 | g/cm³ |
| Peak melting point, second heating | ISO 11357-3:2018 | 55–62 | °C |
| Shore A hardness | ISO 868:2003 | 75–80 | — |
| Tensile strength at break | ISO 527-2:2012 | 4–6 | MPa |
| Elongation at break | ISO 527-2:2012 | 700–850 | % |
The combination of 0.97 g/cm³ density and 55 g/10 min melt flow rate places PRIMEVA P40055 between high-viscosity packaging EVA grades and low-viscosity sprayable assembly grades. The resin is therefore selected for adhesive and sealant systems that require controlled open time, moderate application viscosity, and strong adhesion to polar or plasticized substrates without the excessive penetration associated with very low melt viscosity copolymers.
In adhesive systems based on PRIMEVA P40055, the 40 wt% vinyl acetate level changes thermal and mechanical response compared with lower-VA copolymers. Increased comonomer content disrupts polyethylene crystallinity and reduces the crystalline fraction to a level typically below 15 % by differential scanning calorimetry, depending on cooling rate. The result is a peak melting point of 55–62 °C, a broad melting interval, and a glass transition temperature near -30 °C. These characteristics translate into higher peel energy on polar substrates such as corona-treated polyethylene terephthalate, aluminum foil, and rigid PVC when evaluated according to ASTM D1876. Formulated adhesives containing P40055 and rosin ester tackifiers at resin-to-tackifier ratios between 1.0:0.8 and 1.0:1.5 are used in low-temperature packaging lines where ambient storage can reach -20 °C. The limiting constraint is reduced elevated-temperature shear resistance relative to lower-VA, higher-crystallinity copolymers; high-VA formulations generally show lower shear adhesion failure temperature unless combined with high-melting waxes or higher-molecular-weight base polymers.
Because the comonomer content is high, segmental mobility remains sufficient at sub-zero temperatures, which reduces brittle failure in sealant beads. Low-temperature elongation measured on compression-molded films according to ISO 527-2:2012 is generally retained at -30 °C, although exact values depend on tackifier type and plasticizer level. The absence of long crystallizable ethylene sequences also lowers modulus, which improves wet-out on rough or porous surfaces but reduces tensile yield stress relative to 18–28 wt% VA grades. Published data for this specific configuration is limited where absolute peel strength on a particular substrate is required, so industrial validation on the intended surface remains necessary.
In continuous hot-melt production, PRIMEVA P40055 is introduced into a co-rotating twin-screw extruder with a barrel L/D ratio of 40:1 to 48:1. Typical zone settings begin at 120–140 °C in the feed section, increase to 160–180 °C in the melting and mixing zones, and drop to 150–160 °C at the discharge and gear pump interface. Screw speed is commonly held between 150 rpm and 250 rpm, with specific mechanical energy input of 0.10–0.18 kW·h/kg. Because EVA of this vinyl acetate content is shear-sensitive, excessive screw speed or restrictive die plates can raise melt temperature above 200 °C and initiate deacetylation. A vacuum devolatilization port at -0.08 MPa to -0.09 MPa gauge removes residual moisture and volatile acetic acid. Filtration through a retainer-type melt filter with screen pack 100/60/20 mesh is standard to remove gels and unmetled particles. The melt is strand-pelletized through a water bath maintained at 20–40 °C. In-line rheometry or periodic laboratory MFR checks control batch-to-batch variation in pellet moisture and melt flow.
The EVA backbone is subject to autocatalytic deacetylation when held above 200 °C for extended periods. In adhesive production, this degradation releases acetic acid, lowers pH in wet scrubbers, darkens the formulation, and increases gel formation. The reaction is accelerated by acidic residues, chlorinated species, and excessive mechanical shear. Processing guidelines therefore specify a maximum melt temperature of 200 °C, with optimum hold-up time below 20 min at 180 °C. If a line requires extended shutdown, the melt should be purged with low-MFR polyolefin or a dedicated purge compound rather than held at temperature for prolonged periods. A nitrogen blanket on the feed hopper is recommended when ambient relative humidity exceeds 60 %, because absorbed moisture hydrolyzes vinyl acetate units and increases acetic acid formation. Downstream equipment in contact with the melt should be constructed from 316 stainless steel or hardened chrome-plated tool steel to resist corrosion from acetate by-products.
For sealed storage, PRIMEVA P40055 should be kept in a dry area at 15–30 °C and 40–60 % relative humidity. Pellets are prone to blocking in uninsulated silos or containers above 40 °C. Regrind from start-up may be reincorporated up to 15 wt% without significant shift in melt flow rate if the regrind has not experienced multiple heat histories or visible yellowing. Pre-drying at 60 °C for 4 h in a desiccant dryer is required when the resin has been exposed to ambient humidity above 60 % for more than 24 h.
For case sealing and carton erection, formulated hot melt based on P40055 is applied by wheel, jet, or slot nozzle systems. Application temperature ranges from 150 °C to 170 °C at gun pressure 5–15 MPa, depending on nozzle diameter and line speed. Open time is controlled by adding wax and adjusting the resin-to-tackifier ratio; typical open times for carton sealing systems fall between 2 s and 8 s at 160 °C. Compression of board flutes occurs within 0.5–2 s before adhesive solidification. In bookbinding spine glue lines, a similar formulation is applied by roller or extrusion, with covering performance tested by page-pull methods based on ASTM D1876 or fold-pull procedures. For profile wrapping and edge banding, P40055-containing adhesives are applied to preheated PVC or ABS edge bands, where the high vinyl acetate content improves adhesion to plasticized PVC and prevents edge lift at temperatures near 0–10 °C. Sealant applications include removable caulks and temporary protective sealants where medium cohesion and low-temperature flexibility are required. Ring-and-ball softening point of a formulation containing 35 wt% P40055, 40 wt% rosin ester, and 25 wt% wax is typically 95–115 °C by ASTM E28-99(2017), although the value shifts with wax melting point and tackifier softening point.
Substitution of a conventional EVA packaging grade by PRIMEVA P40055 changes five processing and performance variables: melt viscosity profile, adhesion to low-energy plastics, low-temperature ductility, hardness, and high-temperature creep resistance. The comparative ranges in Table 2 are compiled from industrial EVA adhesive-grade categories and are presented as expected directional changes, not as direct experimental results for P40055 unless confirmed on a specific formulation.
| Parameter | Lower-VA packaging EVA 28 wt% VA, MFR 6–25 g/10 min | PRIMEVA P40055 category | Higher-MI assembly EVA 33 wt% VA, MFR 150–400 g/10 min |
|---|---|---|---|
| Melt viscosity at 180 °C | Higher; requires higher application temperature | Medium; suitable for wheel and jet application at 150–170 °C | Lower; suitable for low-pressure spray or fine-line application |
| Polar substrate adhesion | Moderate; less wet-out on corona-treated PET and aluminum | High; improved T-peel on polar substrates per ASTM D1876 | Moderate-high; lower cohesive strength may limit peel |
| Low-temperature flexibility | Reduced below -10 °C; may exhibit brittle failure | Retained below -30 °C depending on tackifier | Better than low-VA, but higher melt flow may reduce cold cohesion |
| Suitable application temperature | 170–190 °C | 150–170 °C for many assembly and packaging lines | 130–150 °C for some low-melt systems |
| Primary limitation | Limited adhesion to plasticized PVC and aluminum foil | Reduced shear resistance at 60 °C without high-melt wax or crosslinking | Low viscosity may lead to bleed-through on porous board |
Formulators replacing a low-VA packaging EVA with P40055 should reduce application temperature by 10–20 °C and may need to increase wax content to shorten open time. When replacing a higher-MI assembly EVA, the formulation may require additional plasticizer or lower-viscosity tackifier to maintain nozzle flow, while gaining higher cohesive strength at room temperature. The difference is most evident in heat resistance: high-VA EVA formulations soften more readily at 50–70 °C, and this must be addressed by selecting tackifiers with softening points above 100 °C or by adding Fischer-Tropsch wax with a congealing point above 90 °C.
PRIMEVA P40055 is compatible with rosin ester tackifiers, aliphatic and alicyclic hydrocarbon resins, microcrystalline wax, Fischer-Tropsch wax, and paraffin wax in typical hot-melt proportions. Rosin ester levels between 30 wt% and 50 wt% produce stable single-phase melts with the EVA when mixed at 160–180 °C. Excessive wax above 25 wt% can phase separate in low-shear storage, especially with high-melting paraffins above 70 °C melting point. Plasticizing oils such as naphthenic or paraffinic process oils are incorporated at 5–15 phr to reduce melt viscosity and shift low-temperature flexibility, but each 1 phr of oil generally reduces ring-and-ball softening point by 1–2 °C. Antioxidant packages based on hindered phenols or phosphite co-stabilizers are normally added at 0.2–0.5 wt% to protect the high-VA polymer and the tackifier during extended melt hold-up.
Fillers such as calcium carbonate or talc can be used below 20 wt%; higher loadings increase viscosity and reduce wet-out but may be acceptable for gap-filling sealants. The grade should not be combined with amine-based antistatic additives, certain lead or zinc stearate stabilizers, or strongly alkaline fillers because these agents can accelerate ester cleavage and deacetylation. For food-contact adhesive compliance under FDA 21 CFR 177.1350, the formulated adhesive must be tested for extractives and migration because the polymer resin alone does not confer food-contact approval. The product is not recommended for continuous exposure to hot water above 60 °C or UV-intensive outdoor service without additional protection, because high-VA EVA copolymers can hydrolyze and undergo photo-oxidative embrittlement. Users should consult the safety data sheet for decomposition products at processing temperatures and ensure local exhaust ventilation is rated for acetic acid and light hydrocarbon volatiles.
Bulk handling of P40055 in outdoor silos requires dry-air purge and transfer lines maintaining pellet temperature below 50 °C. In-line moisture monitoring and sintered-metal filters on conveying air are recommended to avoid contamination with fines. Published data for this specific configuration is limited where application-specific peel values and long-term aging performance are concerned; therefore, site-specific validation on production substrates remains necessary before line qualification.
