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EVA = ETHYLENE-VINYL ACETATE
VINAVIL EVA 204 is a vinyl acetate-ethylene aqueous dispersion, with 60% solid content.
VINAVIL EVA 204 is an ethylene-vinyl acetate aqueous dispersion with excellent mechanical stability.
VINAVIL EVA 204 has polivinyl alcohol as emulsifying system.
VINAVIL EVA 204 provides quick setting time, excellent adhesion to plastic materials and a high cohesive strength.
VINAVIL EVA 204 shows a pseudo-plastic rheological behavior, which makes VINAVIL EVA 204 particularly suitable for high speed machines.
VINAVIL EVA 204 exhibits resistance to high and low temperatures.
VINAVIL EVA 204 offers increase in viscosity of the emulsion and improves adhesion at low temperature without significantly lowering heat and creep resistance.
VINAVIL EVA 204 can be modified by adding plasticizers or coalescing agents.
VINAVIL EVA 204 applications include bonding plastic foils to wood, fiberboard and absorbent substrates for automatic packaging, bookbinding, automatic lamination of paper and board with plastic and metal foils.
VINAVIL EVA 204 can be used to prepare adhesives suitable for wood lamination with 3D press system.
VINAVIL EVA 204 can also be used to glue paper with plastic sheets and overlacquered papers, also with high-speed machines.
VINAVIL EVA 204 can be formulated with mineral fillers, such as calcium carbonate and calcium sulphate.
VINAVIL EVA 204 is especially compatible with thickeners (cellulosic and acrylic nature), plasticizers (benzoic acid esters, polymer based, triacetin, acetyltributylcitrate), tackifiers resins (natural and modified colophony, coumarone-indene, terpenes, hydrocarbons) and natural latex rubber.
VINAVIL EVA 204 has a shelf life of 6 months.
Applications of VINAVIL EVA 204:
VINAVIL EVA 204 can be used for bonding plastic foils to wood and fiberboard.
Adhesives like VINAVIL EVA 204 is used to bond plastic foils to absorbent substrates for automatic packaging, bookbinding, automatic lamination of paper and board with plastic and metal foils.
VINAVIL EVA 204 can be used to prepare adhesives suitable for wood lamination with 3D press system.
Uses Of VINAVIL EVA 204:
Wood Lamination / Pvc-mdf
3D Vacuum Forming
Packaging
Paper Converting
Recommended use of VINAVIL EVA 204:
Polymer for industry
Uses advised against of VINAVIL EVA 204:
Data not available
Compatibility of VINAVIL EVA 204:
VINAVIL EVA 204 has an excellent compatibility with other products used in vinyl-ethylene copolymer water dispersion for adhesives formulations.
VINAVIL EVA 204 is especially compatible with:
Thickeners, cellulosic and acrylic nature,
Plasticizers like benzoic acid esters, polymer based, triacetin, acetyltributylcitrate,
Tackifiers resins like natural and modified colophony, coumarone-indene, terpenes, hydrocarbons;
Natural latex rubber with VINAVIL EVA 204 previously treated with ammonia to a value of pH around 9.
VINAVIL EVA 204 is also compatible with other:
VINAVIL dispersion products.
Anyway, VINAVIL EVA 204 should be first verified the compatibility of the additives.
Handling, Transport And Storage of VINAVIL EVA 204:
VINAVIL EVA 204 has a shelf life of 6 months starting from the dispatch date, if stored in the original, unopened containers at temperatures between 5 and 40°C and if stored and transported hygienically, avoiding frost and direct sunlight.
An indoor warehousing is highly suggested for product delivered in packed conditions.
Skins or lumps can be formed during storage and transport of the dispersion, due to VINAVIL EVA 204 film forming nature and weathering conditions.
A filtration or sieve process is recommended before further processing.
For bulk storage, regular stirring is suggested.
For IBCs or drums, product tends to film on the top of the surface of the packaging, therefore VINAVIL EVA 204 should be stored indoor, avoiding direct sunlight and carefully transported.
The dispersion contains some initial quantity of bactericide, according to the state of the art and to actual Regulatory laws.
However, VINAVIL EVA 204 is highly suggested to post-add further quantities of biocides to avoid problems with microorganisms, especially after the first opening of drums, IBCs, tanks or other storage facilities.
All tanks and pipework, as well as hoses and pipes of the tankers, should be kept adequately clean.
In case of storing in unstirred tanks, a layer of preservative-containing water should be sprayed onto the surface of the dispersion to prevent the formation of unwanted skins and possible attack by microorganisms.
Proper procedures, periodic tank cleaning and sanitization, must be set up in order to prevent microbial attack.
All water based finished products, manufactured from polymer dispersions, usually require preservation, too.
For more information, please contact your biocide representative.
We recommend using VINAVIL EVA 204 under safety precautions, as described in the SDS.
Also About Ethylene Vinyl Acetate:
Ethylene-vinyl acetate (EVA), also known as poly (ethylene-vinyl acetate) (PEVA), is the copolymer of ethylene and vinyl acetate.
The weight percent of vinyl acetate usually varies from 10 to 40%, with the remainder being ethylene.
There are three different types of EVA copolymer, which differ in the vinyl acetate (VA) content and the way the materials are used.
The EVA copolymer which is based on a low proportion of VA (approximately up to 4%) may be referred to as vinyl acetate modified polyethylene.
Ethylene-vinyl acetate is a copolymer and is processed as a thermoplastic material – just like low density polyethylene.
Ethylene-vinyl acetate has some of the properties of a low density polyethylene but increased gloss (useful for film), softness and flexibility.
Ethylene-vinyl acetate is generally considered non-toxic.
The EVA copolymer, which is based on a medium proportion of VA (approximately 4 to 30%), is referred to as thermoplastic ethylene-vinyl acetate copolymer and is a thermoplastic elastomer material.
Ethylene-vinyl acetate is not vulcanized but has some of the properties of a rubber or of plasticized polyvinyl chloride particularly at the higher end of the range.
Both filled and unfilled EVA materials have good low temperature properties and are tough.
The materials with approximately 11% VA are used as hot melt adhesives.
The EVA copolymer which is based on a high proportion of VA (greater than 60%) is referred to as ethylene-vinyl acetate rubber.
EVA is an elastomeric polymer that produces materials which are "rubber-like" in softness and flexibility.
The material has good clarity and gloss, low-temperature toughness, stress-crack resistance, hot-melt adhesive waterproof properties, and resistance to UV radiation.
EVA has a distinctive vinegar-like odor and is competitive with rubber and vinyl polymer products in many electrical applications.
Applications of Ethylene-Vinyl Acetate:
Hot melt adhesives (such as hot glue sticks) and top-of-the-line soccer cleats are usually made from EVA, generally with additives like wax and resin.
EVA is also used as a clinginess-enhancing additive in plastic wraps.
Craft-foam sheets are made of EVA and are popularly used for children's foam stickers.
EVA is also used in biomedical engineering applications as a drug-delivery device.
The polymer is dissolved in an organic solvent (such as dichloromethane).
Powdered drug and filler (typically an inert sugar) are added to the liquid solution and rapidly mixed to obtain a homogeneous mixture.
The drug-filler-polymer mixture is then cast into a mold at −80 °C and freeze-dried until solid.
These devices are used in drug delivery research to slowly release a compound.
The polymer does not biodegrade within the body, but is quite inert and causes little or no reaction following implantation.
EVA is one of the materials popularly known as expanded rubber or foam rubber.
EVA foam is used as padding in equipment for various sports such as ski boots, bicycle saddles, hockey pads, boxing and mixed-martial-arts gloves and helmets, wakeboard boots, waterski boots, fishing rods and fishing-reel handles.
Ethylene-vinyl acetate is typically used as a shock absorber in sports shoes, for example.
Ethylene-vinyl acetate is used for the manufacture of floats for commercial fishing gear such as purse seine (seine fishing) and gillnets.
In addition, because of Ethylene-Vinyl Acetate buoyancy, EVA has made its way into non-traditional products such as floating eyewear.
Ethylene-vinyl acetate is also used in the photovoltaics industry as an encapsulation material for crystalline silicon solar cells in the manufacture of photovoltaic modules.
EVA slippers and sandals are popular, being lightweight, easy to form, odourless, glossy, and cheaper compared to natural rubber.
In fishing rods, EVA is used to construct handles on the rod-butt end.
EVA can be used as a substitute for cork in many applications.
EVA copolymers are adhesives used in packaging, textile, bookbinding for bonding plastic films, metal surfaces, coated paper and as redispersible powders in plasters and cement renders.
In recent years, EVA foam has seen popular use in cosplay communities, largely in part due to Ethylene-Vinyl Acetate ease to work with, durability, and comfort in comparison to traditional plastic-based costumes.
Flower-making foam is a thin sheet made of EVA, which is flexible, and is used by artists and craft makers to make artificial flowers.
These foams are presented as raw sheets and they can be cut into the desired petal shape and then can be formed by ironing to assemble artificial flowers by putting these petals together.
EVA is also used in coatings formulation of good-quality interior water-borne paints at 53% primary dispersant.
Hydrolysis of EVA gives ethylene vinyl alcohol (EVOH) copolymer.
Other Uses of Ethylene-Vinyl Acetate:
EVA is used in orthotics, surfboard and skimboard traction pads, car mats and for the manufacturing of some artificial flowers.
Ethylene-vinyl acetate is used as a cold flow improver for diesel fuel and as a separator in HEPA filters.
EVA can easily be cut from sheets and molded to shape.
Ethylene-vinyl acetate is also used to make thermoplastic mouthguards that soften in boiling water for a user-specific fit.
Ethylene-vinyl acetate is also used for conditioning and waterproofing leather.
EVA finds application in the making of nicotine transdermal patches, since the copolymer binds well with other agents to form gel-like substances.
EVA is also sometimes used as a material for some plastic model kit parts.
Specific Properties of VINAVIL EVA 204:
VINAVIL EVA 204 is a vinyl acetate-ethylene copolymer with excellent adhesion to plastic materials and high cohesive strength.
These features make VINAVIL EVA 204 suitable for preparing adhesives used for bonding plastic foil to wood.
VINAVIL EVA 204 fiberboards where high and low temperatures resistance as well as creep are required.
VINAVIL EVA 204 shows a pseudo-plastic rheological behavior, which makes VINAVIL EVA 204 particularly suitable for high speed machines.
VINAVIL EVA 204 can be modified by adding plasticizers or coalescing agents.
The addition of such additives brings to an increase in viscosity of the emulsion and improves adhesion at low temperature without significantly lowering heat and creep resistance.
VINAVIL EVA 204 can be formulated with mineral fillers, such as calcium carbonate and calciumsulphate, without significant performance reductions.
Due to the quick setting time, VINAVIL EVA 204 can be used for gluing either paper with plastic sheets and overlacquered papers, also with high-speed machines.
Chemical-Physical Properties of VINAVIL EVA 204:
Solid Content: %: 60±1
Viscosity Mpa*s: 4500±1000
Ph: 5.0±0.5
Tg °c: +7
Emulsifying System: Pvoh
Key Features: High Pu Compatibility
Typical Values of VINAVIL EVA 204:
Minimum film-forming temperature °C: 0 UNI 8490-14
Glass transition temperature °C: 7 MVANS 01
Particle size distribution µm: 0.4÷2.0 MVANS 20
Emulsifying System: Polivinyl alcohol MVANS 10
Mechanical stability: Excellent MVAT 013
Density at 23°C Kg/dm³: 1.1 MVPF 18
Sales Specifications of VINAVIL EVA 204:
Solid content: % 60±1 MVPF 01
Brookfield: Viscosity RVT 20 rpm, spindle 4, 23°C mPa·s 4500±1000 UNI EN ISO 2555
pH: 5.0±0.5 ISO 976
Safety and Environmental Considerations of VINAVIL EVA 204:
VINAVIL EVA 204 has recently become a popular alternative to polyvinyl chloride because VINAVIL EVA 204 does not contain chlorine.
As of 2014, VINAVIL EVA 204 has not been found to be carcinogenic by the NTP, ACGIH, IARC or OSHA, and has no known adverse effect on human health.
Like many plastics, VINAVIL EVA 204 is difficult to biodegrade.
One study suggested VINAVIL EVA 204 may have adverse effects on living organisms, but VINAVIL EVA 204 effect on humans has not been determined.
First Aid Measures of VINAVIL EVA 204:
In case of skin contact:
Wash with plenty of water and soap.
In case of eyes contact:
Wash immediately with water.
In case of Ingestion:
Do not induce vomiting, get medical attention showing the SDS and the hazard label.
In case of Inhalation:
Remove casualty to fresh air and keep warm and at rest.
Exposure controls of VINAVIL EVA 204:
Eye protection:
Not needed for normal use.
Anyway, operate according good working practices.
Protection for skin:
No special precaution must be adopted for normal use.
Protection for hands:
Suitable materials for safety gloves.
EN ISO 374:
Polychloroprene - CR: thickness >=0,5mm.
Breakthrough time >=480min.
Nitrile rubber - NBR: thickness >=0,35mm.
Breakthrough time >=480min.
Butyl rubber - IIR: thickness >=0,5mm.
Breakthrough time >=480min.
Fluorinated rubber - FKM: thickness >=0,4mm.
Breakthrough time >=480min.
Respiratory protection:
Personal Protective Equipment should comply with relevant CE standards (as EN ISO 374 for gloves and EN ISO 166 for goggles), correctly maintained and stored.
Consult the supplier to check the suitability of equipment against specific chemicals and for user information.
Not needed for normal use.
Anyway, operate according good working practices.
