
Polyethylene Naphthalate (PEN) Resin Teonex®
Introduction and Features
Polyethylene naphthalate (PEN) resin became popular in various fields after U.S. company Amoco Chemicals started commercial production of naphthalenedicarboxylic acid (NDC) , a raw material of PEN, in 1995. In 1964, 31 years before that, Teijin started development of PEN and commercialized as Teonex®. Since then, Teonex® has been popular as a functional material for industrial parts and wrapping materials for food and drugs, and still steadily increasing the area of applications. Teonex® is a crystalline thermoplastic polyester, a polycondensate of NDC as an acid component and ethylene glycol as a glycol component, manufactured in a process similar to that of polyethylene terephthalate (PET), a typical polyester. The property of Teonex® is considered superior to that of PET. Teonex® is crystalline resin, crystallized slowly, making it easier to shape transparent molded products. Teonex® has a superior chemical and scratch resistance compared to polycarbonate (PC) resin, a typical resin used in transparent molded products.
Features

- 1.High transparency.
- 2.+50℃ of thermal resistance compared to PET.
- 3.Higher hydrolysis resistance and longer life than PET.
- 4.Higher chemical resistance than PET and PC.
- 5.Reduces the concern for contamination thanks to low levels of outgassing and adsorption of organic materials.
- 6.Absorbs ultraviolet radiation (up to 383nm) and protects contents inside.
Usage examples for application fields
- Returnable bottles
- Cosmetic containers
- Plateware
- Medical product containers
- Blending materials to improve PET performance (moisture barrier, gas barrier, heat resistance, UV ray absorption, etc.)
- Components that requires transparency, heat resistance, or chemical resistance
Grade Lists
Properties
Property | Unit | Measurement method | Measurement condition | Teonex® | PET | Panlite® | |
---|---|---|---|---|---|---|---|
TN-8050SC | TN-8065S | L-1250Y | |||||
MVR | m3/10min | ISO 1133 | 300℃, 1.2kgf | 18 | 5 | - | 8 |
Density | kg/m3 | ISO 1183 | - | 1,330 | 1,330 | 1,330 | 1,200 |
Tensile modulus | MPa | ISO 527-1 and ISO 527-2 |
1mm/min | 2,200 | 2,200 | 2,300 | 2,400 |
Tensile yield strength | MPa | 50mm/min | 80 | 80 | 58 | 61 | |
Tensile yield strain | % | 50mm/min | 7 | 7 | 4 | 6 | |
Tensile stress at break | MPa | 50mm/min | 38 | 40 | 28 | 75 | |
Tensile strain at break | % | 50mm/min | 15 | 50 | >200 | >50 | |
Flexural modulus | MPa | ISO 178 | 2mm/min | 2,250 | 2,200 | 2,500 | 2,300 |
Flexural strength | MPa | 2mm/min | 99 | 98 | 81 | 91 | |
Charpy impact strength | kJ/m2 | ISO 179 | Un-notched | 98 | NB | NB | NB |
Notched | 2.0 | 2.8 | 3.5 | 76 | |||
Temperature of deflection under load | ℃ | ISO 75-1 and ISO 75-2 |
1.80MPa | 91 | 92 | 65 | 129 |
0.45MPa | 105 | 107 | 68 | 142 | |||
Rockwell hardness | - | ASTM D 785 | M scale | 107 | 107 | 80 | 67 |
- Japan
- Comply with the various notifications of Food Sanitation Act, and comply with the positive list of Japan Hygienic Olefin and Styrene Plastics Association.
- EU
- Grade TN8065S and TN8050SC comply with European Commission Regulation (EU) No 10/2011
Engineering Service
Characteristics
- Crystalline properties
- Optical properties
- Pencil hardness test
- Frictional properties
- Chemical resistance
- Permeability to gases
- Adsorption
- Anti-hydrolysis
- Mold shrinkage
- Flow properties
Design and molding
- Processing molded product