What EVOH barrier grades does Gantrade offer?

Gantrade offers the following EVOH barrier grades: EV2751F, EV2904F/V, EV2951F/V, EV2951FR, EV3251F/V, EV3251FT, EV3851F/V, EV4405F/V, and EV4451F/V. Grades labeled 'F' contain lubricant, while those labeled 'V' do not.

EVOH Barrier FAQ | Gantrade

Q: What is an EVOH Barrier?

Ethylene vinyl alcohol copolymer (EVOH) barriers are extrudable plastic materials known for their excellent barrier properties against oxygen and various other gases and volatile substances. Gantrade markets the Evasin™ family of EVOH extrudable plastic barrier materials from Taiwan’s Chang Chun Petrochemicals.

Q: What is EVOH used for?

Due to its excellent gas barrier properties, EVOH is coextruded with or laminated to polyolefin resins for food packaging and industrial applications. It's also utilized in agricultural films and serves as a fuel barrier layer in low-emission fuel tanks for automobiles and portable gas containers, owing to its chemical and oil resistance.

Q: What are the properties of Gantrade’s Evasin™ EVOH oxygen barrier products?

Gantrade's Evasin™ EVOH products vary in ethylene content, density, melting point, glass transition temperature, melt flow index, and oxygen transmission rate. For instance, EV2751F has 27 mole% ethylene content, a density of 1.19 g/cm³, a melting point of 190°C, a glass transition temperature of 63°C, a melt flow index of 4 g/10 min, and an oxygen transmission rate of 0.1 cc 20µm/m²·day·atm. Other grades have different specifications tailored to various applications.

Q: What are the attributes of EVOH barriers?

EVOH barriers offer several advantages, including excellent oxygen barrier properties, high transparency, flavor preservation, low gel formation, weather resistance, oil and solvent resistance, high rigidity, and easier processability with lower back pressure.

Q: What are the packaging options for EVOH?

Gantrade provides EVOH packaging in two formats: Gaylord boxes and 25 kg bags.

Q: How do manufacturers apply EVOH barriers?

Manufacturers apply EVOH barriers using various fabrication methods, including blown or cast co-extrusion, co-extrusion lamination, and co-extrusion coating. These processes are used to form products like bottles, sheets for thermoforming, films, pipes, tubes, or fibers. Selecting the appropriate grade of EVASIN® resins optimizes packaging performance.

Q: How is EVOH processed with resins?

EVOH resins are processed using several methods, such as monolayer film extrusion (blown or cast), co-extruded film extrusion (blown or cast), sheet co-extrusion, co-extrusion blow molding, co-extrusion coating, laminating, and injection molding.

What is an EVOH Barrier?

Ethylene vinyl alcohol copolymer (EVOH) barriers comprise a family of extrudable plastic barrier materials with excellent barrier properties for oxygen and a variety of other gases and volatile products (flavor barrier). Gantrade is proud to market the Evasin™ family of EVOH extrudable plastic barrier materials from Taiwan’s Chang Chun Petrochemicals.

Gantrade offers the following EVOH barrier grades:

EV2904F/V
EV2951F/V
EV2951FR
EV3251F/V
EV3251FT
EV3851F/V
EV4405F/V
EV4451F/V

*F -without lubricant. V - with lubricant.

What is EVOH used for?

Based on its excellent gas barrier properties, manufacturers may coextrude with or laminate EVOH to polyolefin resins for food packaging and industrial applications. EVOH barrier grades are also great for applications in food packaging and agricultural film sectors among others. EVOH copolymer also has excellent chemical and oil resistance that enables it to be used as the fuel barrier layer in low emission fuel tanks for automobiles and portable gas containers.

What are the properties of Gantrade’s Evasin™ EVOH oxygen barrier products?

Grade¹⁾	Ethylene Content	Density	Tm	Tg	MFI	OTR ³⁾	Application ⁴⁾
Grade¹⁾	Mole %	g/cm³	°C	°C	g/10 min²⁾
EV2904 F or V	29	1.2	188	65	8.5	0.3	Cast film, Pipe, Bottles
EV2951 F or V	29	1.2	188	65	3	0.3	Cast Film, Blown Film, Pipe, Bottles
EV2951FR	29	1.17	188	62	1.8-4.2	0.5	Retort Grade, Film, Bottles
EV3251 F or V	32	1.19	183	62	1.6	0.4	Cast film, Blown film, Sheet, Blow molding, Tube
EV3251FT	32	1.17	183	57	4.3	0.5	Sheet & Thermoforming
EV3851 F or V	38	1.17	173	58	1.6	0.7	Cast film,Blown film, Sheet, Blow molding
EV4405 F or V	44	1.14	165	55	1.14	1.5	Sheet, Film, Tubes
EV4451 F or V	44	1.14	167	56	2	1.35	Film, Molding, Thermoforming

1) F: EVOH with Lubricant ; V: EVOH without Lubricant
2) 210°C, 2160g for EV2904 F/V and EV2951FR; 190°C, 2160g for the rest of grades
3) 20 °C, 65%RH, ISO14663-2, unit: cc 20um/m²-day-atm
4) Food contact regulatory status EVASIN contains no heavy metals or other harmful substances, and meets the standards of FDA 21, C.F.R. Section 177.1360. / European Commission Directive No. 10/2011

What are the attributes of EVOH barriers?

EVOH barriers have several advantages that make them the preferred choice for applications as diverse ads food packaging, agricultural film, and fuel tanks in the automotive industry:

Excellent Oxygen Barrier
High Transparency
Flavor Barrier
Low Gel Performance
Weather Resistance
Oil/Solvent Resistance
High Rigidity
Easier Processability - Lower back pressure

What are the packaging options for EVOH?

Packaging for EVOH comes in two options from Gantrade:

Gaylord boxes
25 kg bags

How do manufacturers apply EVOH barriers?

Manufacturers typically apply EVOH barriers with different kinds of ethylene content in various barrier products by the fabrication process methods of blown or cast co-extrusion, co-extrusion lamination, or co-extrusion coating to form bottles, sheet for thermoforming, films, cast films, pipes, tubes or fibers. Manufacturers can process polymers and resins, and packaging performance can be optimized by selecting the appropriate grade of EVASIN® resins.