Is EVOH a moisture barrier?
By using multilayer technology to manufacture our packaging products, the EVOH layer is protected from moisture by other layers and offers the ultimate oxygen barrier – even under extremely humid conditions inside or outside the packaging.
What is an EVOH barrier?
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).
What is EVOH used for?
EVOH is extensively used for atmosphere packaging where a certain atmosphere is needed inside the package to improve the shelf life of food products. In other words, EVOH film is frequently used for fresh produce when minimal permeability is needed.
Is EVOH soluble in water?
EVOH consists of hydrophobic ethylene and hydrophilic vinyl alcohol segments, has good solubility in DMSO. It has also been shown that EVOH is only soluble in solvent mixtures such as THF/methanol and DMSO/n-propanol(13).
Why is EVOH a good oxygen barrier?
The advantages of EVOH packaging The sophisticated molecular, crystalline structure makes EVOH an extremely effective and powerful barrier against oxygen and other gases such as nitrogen, carbon dioxide and helium. The supply of oxygen is almost completely cut off.
What is EVOH made of?
Ethylene vinyl alcohol (EVOH) is a formal copolymer of ethylene and vinyl alcohol. Because the latter monomer mainly exists as its tautomer acetaldehyde, the copolymer is prepared by polymerization of ethylene and vinyl acetate to give the ethylene vinyl acetate (EVA) copolymer followed by hydrolysis.
What is EVOH made from?
Is EVOH a good water barrier?
When compared to other common films, EVOH is considered to have superior barrier properties. For this reason, EVOH is often used in a multilayer co-extruded film structure with materials such as HDPE, PP and PET, all of which have superior moisture barrier properties.
Why is EVOH a good barrier?
EVOH is known for having some of the best barrier resistance to gases such as oxygen, nitrogen, and carbon dioxide which makes it particularly suited for packaging food, drugs, cosmetics, and other perishable products. When compared to other common films, EVOH is considered to have superior barrier properties.
Is EVOH environmentally friendly?
Scanfills materials with EVOH barrier is an environmentally friendly alternative with high barrier properties and great possibility to choose colors and surface structure on your packaging. They are environmentally friendly and recyclable materials with good barrier properties.
Who makes EVOH?
EVAL™ (resins and film) As a world first, in 1972 Kuraray developed and subsequently started manufacturing EVAL™, an ethylene vinyl alcohol copolymer (EVOH) resin. Featuring superior gas barrier properties unmatched by any other plastic, EVAL™ is used widely in food packaging containers.
Is EVOH food Safe?
What kind of barrier is an EVOH barrier?
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).
What are the properties of gantrade’s EVASIN™ EVOH oxygen barrier?
What are the properties of Gantrade’s Evasin™ EVOH oxygen barrier products? Grade 1) Ethylene Content Density Tm Tg Grade 1) Mole % g/cm 3 °C °C EV2751F 27 1.19 190 63 EV2904 F or V 29 1.2 188 65 EV2951 F or V 29 1.2 188 65
Which is the world leader in the production of EVOH?
More function, less waste Kuraray Co., Ltd. is the world leader in the production and development of EVOH (ethylene vinyl alcohol copolymer) barrier plastic raw materials. It is available worldwide under the name EVAL™, either in pellet form for coextrusion and coinjection, or as film for lamination.
What can EVOH be used for in food packaging?
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.