As clear as glass
PARAGLAS™ and COMOGLAS™
- General name
- Methacrylic resin sheets
- Sales format
- Sheets
- Examples
-
Kuraray’s PARAGLAS™ and COMOGLAS™ are methacrylic resin sheets. Methacrylic resin is sometimes called the “queen of plastics” in Japan because of its exceptional transparency and weather resistance compared with other plastics. These features make PARAGLAS™ and COMOGLAS™ popular choices in a wide range of fields. PARAGLAS™ is a cast sheet with excellent surface properties and high purity. It is made using Kuraray’s unique manufacturing technique of injecting a liquid monomer between two sheets of glass and directly curing it. Using batch production for easy toning, we offer a wide array of colored sheets. COMOGLAS™ is an extruded sheet made using Kuraray’s continuous production technologies. It features outstanding thickness precision, with easy bonding and thermoforming.
Applications
Billboards and signs for stores
Advertisement displays and fixtures
Frames for displays
Building materials, water tanks, basketball backboards
Bathtubs
Light guides and diffusers for LED lights
Front panels for automatic vending machines
In-vehicle front display panels
Characteristics
Transparency
Known as “the queen of plastics” for having greater transparency than even glass
Processability
Easily cut, trimmed and bonded. Can be processed into a variety of designs.
Optical properties
Use in liquid crystal-related optical fields due to its high light-transmittance
Weatherability
Can endure extended outdoor use due to its resistance to discoloring and damage
Standard grades and properties
| Properties | Test methods | Units | PARAGLAS™ | COMOGLAS™ | COMOGLAS™ KHC2 |
COMOGLAS™ HI70 |
|---|---|---|---|---|---|---|
| Total light transmittance | JIS K7361-1 | % | 93 | 93 | 93 | 91 |
| Visible light transmittance | JIS R3106 | % | 92 | 92 | 92 | 90 |
| Haze | JIS K7I05 | % | 0.2 | 0.2 | 0.2 | 0.7 |
| Refractive index | JIS K7105 | 1.49 | 1.49 | 1.49 | 1.49 | |
| Solar transmittance | JIS R3106 | % | 88 | 88 | 88 | 87 |
| Tensile strength | JIS K7113 | Mpa1 | 76 | 73 | 73 | 49 |
| Tensile strain at break | JIS K7113 | % | 6 | 5 | 5 | 20 |
| Flexural strength | JIS K7171 | Mpa1 | 120 | 113 | 113 | 74 |
| Young’s modulus in flexure | JIS K7171 | Mpa1 | 3200 | 3200 | 3200 | 2200 |
| Rockwell hardness | JIS K7202-2 | M scale | 100 | 97 | 97 | 61 |
| IZOD impact strength | JIS K7110 | KJ/m2 | 2.1 | 1.8 | 1.8 | 5.3 |
| Charpy impact strength | JIS K7111 | KJ/m2 | 18 | 17 | 17 | 80 |
| Specific heat capacity | JIS K7123 | J/g・ºC | 1.5 | 1.5 | 1.5 | 1.5 |
| Deflection temperature under load | JIS K7191-2 (Method A) | ºC | 105 | 92 | 92 | 84 |
| Linear expansion coefficient | JIS K7197 | ºC-5 | 7 x 10-5 | 7 x 10-5 | 7 x 10-5 | 7 x 10-5 |
| Surface resistivity | JIS K6911 | Ω | > 1016 | > 1016 | > 1016 | > 1016 |
| Half-life of electric charge | Static honest meter | sec | ∞ | ∞ | ∞ | ∞ |
| Taper abrasion2 | JIS K7204 | Haze (%) | 18 | 20 | 5 | - |
| Falling sand abrasion | ASTM D673 | Haze (%) | 50 | 52 | 3 | - |
| Specific gravity | JIS K7112 | 1.19 | 1.19 | 1.19 | 1.17 | |
| Water absorption rate | JIS K7209 | % | 0.3 | 0.3 | 0.3 | 0.35 |
Note: The above figures should be regarded as guide values only and not as binding minimum values.
1. 1MPa=10.2 kgf/cm2
2. Haze (fog) measurement after rotating a cylindrical grindstone (CS-10F) 100 times with a load of 500 g
Related website
Contact us
Click here for inquires (PARAGLAS™ and COMOGLAS™)- Sheets Marketing and Sales Department,
Methacrylate Division
Kuraray Co., Ltd. - Tokiwabashi Tower, 2-6-4, Otemachi, Chiyoda-ku, Tokyo, 100-0004, Japan
- Methacrylate Division
Kuraray Trading Co., Ltd. - Tokiwabashi Tower, 2-6-4, Otemachi, Chiyoda-ku, Tokyo, 100-0004, Japan
Tel.: +81-3-6701-2035
- Methacrylate Division
Kuraray Trading Co., Ltd. - Osaka Umeda Twin Towers North, 8-1, Kakudacho, Kita-ku, Osaka 530-8611, Japan
Tel.: +81-6-7635-1805
