Highest level of gas barrier properties of any plastic
EVAL™ (resins and film)
- General name
- Ethylene vinyl alcohol copolymer
- Sales format
- Pellets and single-layer film
- Examples
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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. It is being used increasingly in a wide variety of applications, such as for pharmaceuticals, cosmetics, agricultural produce and industrial products. EVAL™ is also adopted in automotive plastic fuel tanks.
Applications
Food packaging materials, medical packaging materials, automotive plastic fuel tanks, under-floor heating pipes, containers for agrochemicals, soil fumigating film, vacuum insulation panels, districted energy pipes, etc.
Characteristics
Gas barrier properties
Excellent barrier properties against the permeation of gases including oxygen
Solvent/chemical substances barrier
Blocks solvents and chemical substances
Aroma retention
Excellent barrier for flavor and aroma preservation
Transparency
Transparent package for content visibility
Chemical resistance
Minimal absorption of solvents
Low thermal conductivity
Low thermal conductivity compared with aluminum foil
Standard grades and properties
| Grade | Ethylene content (mol%) |
Density1 (g/cm3) |
MFR2 (g/10 min) |
Melting point (ºC) |
Glass transition point3 (ºC) |
Oxygen transmission rate4 (cm3・20μm/m3・day・atm) |
Applications |
|---|---|---|---|---|---|---|---|
| L171B | 27 | 1.21 | 4.05 | 190 | 63 | 0.1 | High barriers |
| F101B | 32 | 1.19 | 1.6 | 183 | 60 | 0.3 | Fuel tanks, bottles, tubes |
| F171B | 32 | 1.19 | 1.6 | 183 | 60 | 0.3 | Bottles, sheets, film, tubes |
| H171B | 38 | 1.17 | 1.7 | 172 | 56 | 0.7 | Bottles, sheets, film, tubes |
| E105B | 44 | 1.14 | 5.5 | 165 | 53 | 1.9 | Sheets, film, tubes |
| G156B | 48 | 1.12 | 6.4 | 157 | 50 | 3.7 | Stretch film, shrink film |
1. 20ºC 2. 190ºC, 2,160 g 3. Dry 4. 20ºC×65%RH, ISO14663-2 annex C 5. 210ºC, 2,160 g
| Grade | Ethylene content (mol%) |
Density1 (g/cm3) |
MFR2 (g/10 min) |
Melting point (ºC) |
Glass transition point3 (ºC) |
Oxygen transmission rate4 (cm3・20μm/m3・day・atm) |
Applications |
|---|---|---|---|---|---|---|---|
| L104B | 27 | 1.21 | 8.05 | 190 | 63 | 0.1 | L-type low-viscosity type |
| F104B | 32 | 1.19 | 4.4 | 183 | 60 | 0.3 | F-type low-viscosity type |
| E171B | 44 | 1.14 | 1.7 | 165 | 53 | 1.9 | E-type high-viscosity type |
1. 20ºC 2. 190ºC, 2,160 g 3. Dry 4. 20ºC×65%RH, ISO14663-2 annex C 5. 210ºC, 2,160 g
| Characteristics | Differences from the standard grade | Grades |
|---|---|---|
| Improved processability | Improved thermo-formability and stretchability in sheet forming | SP series, J171B |
| Flexibility | Excellent flex-resistance and crack-resistance | FS201B |
| Improves impact resistance | Improved grade for impact resistance | LA170B |
| Pipes | Improves durability for pipes such as under-floor heating pipes | FP101B, EP105B |
| Retort | Reduced whitening and delamination in retort process | FR101B, LR171B |
We offer special grades for various applications and processing methods. Please contact us for more information.
Related website
Contact us
Click here for inquires (EVAL™ (resins and film))- EVAL Division
Kuraray Co., Ltd. - Tokiwabashi Tower, 2-6-4, Otemachi, Chiyoda-ku, Tokyo, 100-0004, Japan
Tel.: +81-3-6701-1489
E-mail: eval.jp@kuraray.com
- EVAL Europe N.V.
- Keetberglaan 1B - Haven 1087 B-9120 Melsele, Belgium
Tel.: +32-3-250-97-33
E-mail: eval.eu@kuraray.com
- Kuraray America, Inc.
- EVAL Business Unit
3700 Bay Area Boulevard, Suite 680, Houston, Texas, 77058, U.S.A.
Tel.: +1-800-423-9762
E-mail: eval.us@kuraray.com
- Kuraray Asia Pacific Pte. Ltd.
- 250 North Bridge Road, #10-01/02 Raffles City Tower, Singapore 179101
Tel.: +65-6337-4123
E-mail: eval.jp@kuraray.com
- Kuraray China Co., Ltd.
- Unit 2207, 2 Grand Gateway, 3 Hongqiao Road, Xuhui District, Shanghai 200030, China
Tel.: +86-21-6119-8111 (ext. 2205)
E-mail: eval.jp@kuraray.com
