| HS Code | 709109 |
| Material | PEVA (Polyethylene Vinyl Acetate) |
| Appearance | Transparent film |
| Color | Clear/Transparent |
| Thickness | 0.05-0.20 mm (typical) |
| Width | 1.0-2.0 m (typical) |
| Length | 50-200 m/roll (typical) |
| Density | 0.92-0.93 g/cm³ (typical) |
| Tensilestrength | ≥10 MPa (typical) |
| Elongationatbreak | ≥200% (typical) |
| Lighttransmittance | ≥85% (typical) |
| Haze | ≤10% (typical) |
| Softeningpoint | 70-80 °C (typical) |
| Temperatureresistance | -20-60 °C (typical) |
| Surfacefinish | Smooth/Glossy (typical) |
| Waterresistance | Yes |
| Ecofriendly | Yes |
As an accredited Huabao PEVA Film EVA001 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
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On high-speed disposable medical converting lines, EVA001 film is introduced as a cast web with a thickness of 0.035–0.080 mm, and the downstream addition ratio is therefore a layer-structure variable rather than a resin-blending variable. Unsupported table covers use the film at 100% of the barrier layer; laminated bed protectors pair an EVA001 web of 18–35 g/m² with a polypropylene spunbond carrier of 12–15 g/m², bonded at 3–6 g/m² of reactive polyolefin hot-melt. This structure is selected only after the final converted article is evaluated against ISO 10993-5:2009 and ISO 10993-10:2010 for cytotoxicity, irritation, and sensitization, with the technical file supported by ISO 13485:2016 manufacturing documentation. Where the film is claimed as an indirect food-contact packaging component, 21 CFR 177.1350 is referenced for the ethylene-vinyl acetate copolymer, and for European placing on the market the finished device must satisfy Annex I, section 10.2 of EU 2017/745 on physicochemical and biological risks. Processing records from production-scale lines show that slit rolls with a width tolerance of ±1.0 mm and consistent unwind tension are required to prevent elastic necking before ultrasonic welding. The film is produced by flat-die cast extrusion, with an inline matte embossing station and corona treatment to 38–42 mN/m where adhesive lamination follows; seal seams are formed by ultrasonic welding at 20–35 kHz with horn pressure 0.2–0.4 MPa or by impulse sealing at 0.3–0.5 MPa with 0.5–1.5 s dwell. Converted article types include examination table covers, dental chair barriers, fluid-resistant aprons, and bed protectors. The operational boundary is that EVA001 is not rated for steam autoclave exposure above 60°C; dimensional shrinkage near the softening range requires process validation before any heat-based sterilization cycle.
| Requirement | Standard/regulation | Clause or test method | Limiting value |
|---|---|---|---|
| Cytotoxicity | ISO 10993-5:2009 | Extraction method | Not cytotoxic |
| Irritation and sensitization | ISO 10993-10:2010 | Skin irritation and sensitization testing | No erythema or edema |
| Liquid barrier | AAMI PB70:2022 | Hydrostatic pressure and synthetic blood penetration | Classified barrier level as declared |
| Quality system | ISO 13485:2016 | Clause 7.5 production and service provision | Traceable production records |
| Phthalates | REACH Annex XVII | Entries 51 and 52 | ≤0.1% by mass |
In infant-care converting plants, the barrier layer is laminated to a nonwoven substrate rather than melt-blended as a pellet, and the most common structure places an EVA001 film web of 14–25 g/m² on a polypropylene spunbond carrier of 12–18 g/m², with hot-melt adhesive add-on controlled at 3–6 g/m². The film surface intended for adhesion is corona-treated to 38–42 mN/m; the opposite side carries an embossed matte finish to limit blocking on high-speed rewinds. This configuration is used for non-breathable backsheet applications where chlorine-free chemistry is preferred. Compliance documentation for the converted article references CPSIA Section 108, which prohibits DEHP, DBP, and BBP in child care articles above 0.1% by mass, and DINP, DIDP, and DNOP above 0.1% for toys and child care articles, as well as EU REACH Annex XVII entries 51 and 52 for phthalates. Production conversion includes automatic roll splicing, slitting to ±0.5 mm width tolerance, and a two-layer lamination nip with engraved roll pressure 0.4–0.6 MPa. The film is then fed into diaper backsheet lines, training-pant overshell lines, and disposable changing-pad lines. End products include disposable baby diaper backsheets, pant-type training undergarment outer covers, waterproof changing mats, and disposable pet pad backing. Published comparative data for EVA001 at film weights below 0.05 mm under dynamic urine penetration after repeated flexing is limited, so trial validation is required for high-loading absorbent articles.
Shower curtain converting changes the processing lens from lamination to continuous impulse welding, and the critical variables are dwell time, seal-bar temperature, and film thickness variation. The EVA001 web is supplied at 0.08–0.12 mm thickness, with a serrated or embossed surface on the reverse to reduce roll blocking. For a two-layer laminated curtain, the film is combined with a polyester woven carrier of 80–100 g/m² using a reactive hot-melt at 5–8 g/m²; in single-layer lines, the film constitutes 100% of the structure and is hemmed by thermal impulse sealing rather than radio-frequency welding. Seam quality data collected on multi-station impulse sealers indicate a stable window at 120–140°C, dwell 1–2 s, and jaw pressure 0.3–0.5 MPa, provided the film thickness tolerance is held below ±0.008 mm. Above 145°C, the EVA phase begins to flow excessively and seam thinning is observed. Compliance records for bathroom products cite REACH Annex XVII entries 51/52 for phthalates at ≤0.1%, and packaging heavy metals below 100 ppm under EU Directive 94/62/EC. Printable topcoats should keep ink laydown below 1.5 g/m² because solvent-heavy overlacquers can weaken the seal edge; ketone-based inks are incompatible. Finished product types include single-layer shower curtains, weighted-hem curtains, two-layer laminated hotel bathroom curtains, and transparent liners.
Printed food-contact tablecovers prepared from EVA001 are designed around migration limits rather than mechanical seam demands. The film is used at 0.08–0.15 mm, either as a printed surface film or as the top membrane thermally laminated to a lightweight paper or nonwoven backing. The application ratio for the barrier layer is typically 100% of the food-contact side, with a laminating adhesive at 4–8 g/m² only on the reverse. Compliance is established under Regulation (EU) No 10/2011 Annex I Table 1, where vinyl acetate monomer carries a specific migration limit of 12 mg/kg, and Annex III establishes an overall migration limit of 10 mg/dm² for plastic food-contact materials. The United States reference is 21 CFR 177.1350, which lists ethylene-vinyl acetate copolymers for food-contact use. The film should be qualified for aqueous, acidic, and low-alcohol foods at or below 40°C; fatty food simulants and hot-fill conditions above 40°C are outside the recommended range because EVA copolymers may swell in high-fat media. Downstream conversion includes flat-die cast extrusion, matte embossing, corona treatment to 38–40 mN/m, water-based flexographic or gravure printing, and rotary die cutting. End products are disposable tablecloths, placemats, shelf liners, refrigerator mats, and counter protectors. Slip agent loading is monitored at the film production stage to prevent migration haze after printing; a post-print coefficient of friction below 0.4 is typical for high-speed stack feeding.
| Requirement | Standard/regulation | Clause or test method | Limiting value |
|---|---|---|---|
| Specific migration of vinyl acetate | Regulation (EU) No 10/2011 | Annex I Table 1 | 12 mg/kg |
| Overall migration | Regulation (EU) No 10/2011 | Annex III | 10 mg/dm² |
| Ethylene-vinyl acetate copolymer | 21 CFR 177.1350 | Food-contact polymer listing | Compliant as specified |
| Heavy metals in packaging | 94/62/EC | Heavy metal concentration limits | ≤100 ppm combined |
| Phthalates | REACH Annex XVII | Entries 51 and 52 | ≤0.1% by mass |
Transparent stationery and cosmetic pouch production uses EVA001 film at 0.10–0.20 mm thickness because puncture resistance during zip insertion and repeated flexing is more important than barrier. The film is usually corona-treated on both sides to 38–42 mN/m to accept water-based flexographic print on one side and to permit adhesive-free zipper welding on the other. In formulation terms, the transparent film is the dominant layer at 100%; any color masterbatch is limited to 2–4% by mass in the seal layer if used, since higher loading reduces seal initiation. Additive migration is controlled by using no plasticizer and avoiding amide slip agents above 800 ppm. Production processes include slitting at ±0.2 mm, multi-station impulse sealing at 120–145°C with 0.6–1.5 s dwell and 0.25–0.4 MPa jaw pressure, and zipper insertion via heated profile tooling. Compliance for packaging articles references 94/62/EC heavy metal limits of ≤100 ppm for lead, mercury, cadmium, and hexavalent chromium combined, and REACH Annex XVII entries 51/52 for phthalates in child-appealing products. End products include transparent stationery zip bags, cosmetic travel pouches, document holders, pencil cases, and gift card sleeves. The processing boundary is that prolonged storage above 55°C may produce blocking in printed stacks; non-silicone release liners should be specified where rolls are stored at warehouse temperatures above 35°C.
Mattress protection laminates impose continuous compression and shear at the quilted seams, so the EVA001 web is selected at 0.12–0.20 mm and laminated to a polyester terry top layer of 180–220 g/m² using a spray or slot-applied reactive hot-melt at 8–12 g/m². The film forms the central liquid barrier; a third layer of knitted polyester may be added to the underside for slip resistance. Production lines run at lower lamination speeds than thin-film apparel lines because the heavier web needs tension-compensated unwinds and a nip pressure of 0.5–0.8 MPa to prevent adhesive strike-through. Quilting is performed after lamination with ultrasonic or thermal quilting stations at 100–200 mm stitch spacing, and edge binding is welded rather than sewn through the barrier to avoid creating leak paths. Compliance for the finished article is assessed under 16 CFR 1633 for mattress flammability only after assembly, because the final mattress protector may affect fill material ignition; California TB 117-2013 is referenced for upholstered furniture components. Heavy metals and phthalates are controlled to 100 ppm and 0.1% respectively under 94/62/EC and REACH Annex XVII. End products include mattress protectors, pillow protectors, upholstery underlay sheets, and sofa barrier liners. The operational limit is that thin spots below 0.10 mm are not recommended for quilted applications because seam fatigue under repeated loading produces pinhole leakage; a minimum puncture elongation test is performed to ISO 527-3 or equivalent internal method.
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As a non-chlorinated ethylene-vinyl acetate copolymer film, Huabao PEVA Film EVA001 is supplied in roll form for converter processes including sheeting, die cutting, thermal lamination, and pouch sealing. The model designation EVA001 identifies a specific film grade within the Huabao PEVA series; where product-specific certificate-of-analysis values are not published in this document, the stated ranges represent the general PEVA film class with vinyl acetate content of 14–18 wt% and must be confirmed against the batch certificate before process qualification. The product is evaluated in flexible barrier packaging, personal care and consumer films, medical device overwrap, and temporary containment applications in which chlorine-free composition, absence of external plasticizer, and low-temperature toughness are specified.
For EVA001-class film with vinyl acetate content of 14–18 wt%, the comonomer disrupts polyethylene lamellar thickness and lowers the peak melting endotherm to 72–85°C when measured by differential scanning calorimetry at a heating rate of 10 K/min under nitrogen per ASTM D3418. This thermal profile is operationally significant for sealing: heat-seal initiation occurs at 65–75°C on a constant-heat jaw sealer at 0.3 MPa jaw pressure and 1.0 s dwell, whereas LDPE of equivalent thickness typically initiates above 105°C. Seal strength at 90°C jaw setpoint for 0.10 mm film is 4–6 N/15 mm when tested at 300 mm/min crosshead speed per ASTM F88. Melt flow index at 190°C/2.16 kg is 2.0–3.5 g/10 min by ISO 1133-1:2022; capillary rheometry on similar EVA grades shows apparent viscosity of 1.0–1.4 kPa·s at 190°C and 100 s⁻¹. The seal temperature window is narrow: at 60°C jaw setpoint, seal strength may fall below 1.5 N/15 mm, while at 105°C jaw setpoint, film distortion and edge thinning occur on rotary equipment. These thresholds require closed-loop temperature control with variation not exceeding ±5°C.
Optical properties of unpigmented EVA001 film are governed by crystallite size and additive compatibility. Typical light transmittance is 88–92% and haze is 2–6% for 0.10 mm film measured by ASTM D1003. Surface energy before corona treatment is 31–34 mN/m; inline corona discharge increases it to 38–42 mN/m for solvent-based lamination and printing. The treatment decays with storage; at 30°C and 60% RH, treated surface energy decreases by 2–4 mN/m within 48 hours. Mechanical properties include tensile strength at break of 15–25 MPa and elongation at break of 400–700% by ASTM D882; Elmendorf tear strength of 35–70 N/mm by ASTM D1922; and dart impact strength of 150–300 g for 0.10 mm film by ASTM D1709. These values are thickness-dependent and general class values unless confirmed on an EVA001 batch certificate.
On cast film lines using a 90 mm 30:1 L/D barrier screw and 1,200 mm width die, the recommended melt temperature for EVA001 is 175–195°C. Die temperature should be held within ±5°C of the setpoint to maintain thickness profile; deviations above 200°C initiate deacetylation of vinyl acetate units with acetic acid evolution, gel formation, and yellowing. Production-scale observations on similar PEVA grades indicate that residence times exceeding 12–15 min at 200°C produce measurable color shift and increased extractable content. The chill roll should be controlled at 15–25°C; lower temperatures can produce condensation-induced haze, while higher temperatures reduce release and increase blocking tendency. Neck-in at 150–250 m/min line speed is 8–12% of die width for melt index 2.0–3.5 g/10 min PEVA, necessitating air knife and edge-trim equipment. Gravimetric feeding with mass flow rate tolerance of ±0.5% is used to reduce gauge variation. Pre-drying is required when ambient relative humidity exceeds 60%; residual moisture on pellets or recycled edge trim creates bubble defects and die lines. During shutdown, a purge with low-melt-index LDPE is recommended to displace EVA from barrel sections, and the screw should not remain static at temperature above 160°C for more than 20 min.
Film winding tension must be adjusted to prevent blocking and telescoping. For 0.10–0.20 mm gauges, winding tension is typically 10–25 N/m of web width, with taper tension of 20–30% from core to outer roll. Static dissipation equipment is required; surface charges above 3 kV disrupt roll formation and attract airborne particulates. Storage of master rolls at 20–25°C and 50% RH in original packaging prevents blocking and additive bloom.
Medical device packaging is one conversion discipline for EVA001. The film is formed into chevron pouches and header bags using rotary sealers with 10–20 mm seal width at 80–100°C jaw setpoint. Seal strength after ethylene oxide sterilization at 55°C and 70% RH for 4 hours is validated per ASTM F88; autoclave or retort exposure is not recommended because the film softens above 65°C and can deform under internal pressure. For drape and cover applications, elongation at break of 400–700% by ASTM D882 permits folding without orientation-induced whitening. Contact with ketones, aromatic solvents, and high-boiling esters should be avoided; 24-hour immersion in these agents can reduce tensile strength by more than 20% because of swelling.
In shower curtain and tablecover converting, EVA001 is cut and grommeted at thicknesses of 0.15–0.20 mm. The absence of external plasticizer avoids the tack and migration mechanism observed in flexible PVC; however, the PEVA surface is more prone to soap-scum adhesion. Cleaning with dilute nonionic surfactant at pH 6–8 is preferred. Low-temperature conversion requires qualification by cold-crack testing at −20°C per ASTM D1790. Published data for this specific configuration is limited; converters should qualify each laminate and print specification separately because corona treatment level decays with storage time and humidity. Dynamic coefficient of friction is maintained at 0.3–0.6 by ASTM D1894 for automated feeder systems, with slip additive selection constrained by food-contact or medical regulations where applicable.
In applications where flexible PVC is excluded by chlorine content or plasticizer migration limits, EVA001 is evaluated as a non-chlorinated replacement. The comparative data below are general class values; EVA001-specific values from the supplier certificate of analysis govern. Compared with EVA copolymers of 28–33 wt% vinyl acetate, EVA001 has higher modulus and lower surface tack; compared with LDPE, it has lower seal initiation temperature and better low-temperature toughness. Compared with plasticized PVC, EVA001 has lower density, no halogen content, and no external plasticizer, but also lower barrier to oxygen and moisture in unpigmented film.
| Property and Method | EVA001 PEVA Film | Plasticized PVC Film | LDPE Film |
|---|---|---|---|
| Chlorine content by ASTM D808 | <0.1 wt% | 50–56 wt% | <0.1 wt% |
| Density by ASTM D792 | 0.935–0.945 g/cm³ | 1.25–1.45 g/cm³ | 0.918–0.940 g/cm³ |
| Tensile strength at break by ASTM D882 | 15–25 MPa | 10–20 MPa | 20–40 MPa |
| Elongation at break by ASTM D882 | 400–700% | 150–400% | 300–600% |
| Low-temperature brittleness by ASTM D746 | < −40°C | −5 to −20°C | < −60°C |
| Heat-seal initiation | 65–75°C | Not applicable without RF welding | 105–115°C |
| External plasticizer content | 0 phr | 25–50 phr | 0 phr |
| Combustion gas profile | CO₂, H₂O, acetic acid; no HCl | HCl, CO₂, H₂O | CO₂, H₂O |
These differences impose converter-level adjustments. Because EVA001 has a lower melting range than PVC, heat-sealing equipment setpoints are lower. Because EVA001 is not inherently RF-active, radio-frequency welding used for PVC shower curtains is generally replaced by thermal sealing or modified dielectric welding. Because the PEVA surface has higher coefficient of friction than rigid PVC, slip management and static elimination are controlled in high-speed converting. Because EVA001 contains no halogen, the acute inhalation hazards associated with hydrogen chloride release during combustion are reduced; however, acetic acid release during thermal decomposition still requires adequate ventilation and equipment corrosion protection.
Compliance statements for EVA001 should be obtained from the manufacturer’s certificate of compliance and safety data sheet. General PEVA film may be evaluated under the following references; EVA001-specific migration or documentation limits depend on thickness, additive package, and intended food-contact matrix.
| Regulatory Reference or Test Method | Scope | Verification Condition |
|---|---|---|
| FDA 21 CFR 177.1350 | Ethylene-vinyl acetate copolymers for food contact | Extractable and compositional limits; supplier food-contact letter |
| EU Regulation 1935/2004 | Framework for food contact materials | Overall migration ≤ 10 mg/dm² per EN 1186 for general food contact |
| EU Regulation 10/2011 | Plastics in food contact | Specific migration limits; simulant selection according to food matrix |
| RoHS Directive 2011/65/EU | Electrical and electronic materials | Pb ≤ 0.1 wt%, Hg ≤ 0.1 wt%, Cd ≤ 0.01 wt%, Cr(VI) ≤ 0.1 wt%, PBB ≤ 0.1 wt%, PBDE ≤ 0.1 wt%; screening per IEC 62321 |
| REACH Regulation 1907/2006 | SVHC declaration | Article 33 communication if threshold exceeded |
| ASTM F88 | Seal strength of flexible barrier packaging | Seal strength 4–6 N/15 mm at defined jaw conditions |
Continuous service temperature for EVA001 is limited to 55–60°C in unstressed film. Exposure to outdoor UV without carbon-black or hindered amine stabilizer leads to embrittlement; indoor use is typical. Storage conditions of 20–25°C and 50% RH in original packaging prevent blocking and additive bloom. The film should not be incinerated without appropriate acid gas scrubbing, because even non-halogenated PEVA releases acetic acid during thermal decomposition. Machinery contact surfaces should be evaluated for resistance to low-molecular-weight acetic acid vapor during high-temperature processing.
