Polyester , one of the three major synthetic fibers , is a fiber with such features as high tenacity, low moisture absorbency, heat plasticity, and acid resistance.
Kuraray offers high quality polyester fiber suitable for specialty paper use.
- Wet strength
- Hardly influenced by water.
- Acid resistance
- Has excellent resistance against acid.
- Heat resistance
- Compared with other general-use fibers, it has a stable property even under high temperature.
- A various lineup of fineness
- We have a lineup of matrix fibers from 0.35 dtex to 3.1 dtex, and binder fibers from 1.0 dtex to 5.6 dtex. Availability with these varieties of fiber sizes, makes it possible to adjust the pore size of paper.
- Lineup of two types of binder fibers
- Two types of binder fibers : PET 100% binders and co-PET binders.
PET 100% binders can be used to create PET 100% papers by combining with PET matrix fibers.
Ⅰ．Matrix fibers
| Item | Fineness (dtex) |
Diameter (μm) |
Cut length (mm) |
Remarks | Cross-section |
|---|---|---|---|---|---|
| EP023 | 0.35 | 5 | 5 | Ultrafine | ○ |
| EP043 | 0.55 | 7 | 3・5・10 | Fine | ○ |
| EP053 | 0.84 | 9 | 3・5 | Fine | ○ |
| EP133 | 1.45 | 12 | 5・6・15 | Regular | ○ |
| EP203 | 2.1 | 14 | 5・10 | Regular | ○ |
| EP303 | 3.1 | 17 | 5・10 | Regular | ○ |
Ⅱ．PET 100% binder fiber
| Item | Fineness (dtex) |
Diameter (μm) |
Cut length (mm) |
Remarks | Cross-section |
|---|---|---|---|---|---|
| EP101 | 1.4 | 11 | 5 | Regular | ○ |
| EP201 | 2.4 | 15 | 5 | Regular | ○ |
Ⅲ．Co-PET binder fiber
| Item | Fineness (dtex) |
Diameter (μm) |
Cut length (mm) |
Remarks | Cross-section |
|---|---|---|---|---|---|
| N720F | 1.0 | 10 | 5 | Bonding temperature：110deg C Co-Pes/PET Ultrafine |
◎ Core sheath ratio 5：5 |
| N720 | 2.2 | 14 | 5・10 | Bonding temperature：110deg C Co-Pes/PET |
◎ Core sheath ratio 5：5 |
| N720H | 2.3 | 15 | 5 | Bonding temperature：130deg C Co-Pes/PET |
◎ Core sheath ratio 5：5 |
| N721 | 1.7 | 13 | 5 | Bonding temperature：110deg C Co-Pes/PET |
◎ Core sheath ratio 4：6 ≪Highly bonded type≫ |
| N701Y | 5.6 | 23 | 5 | Bonding temperature：130deg C Co-Pes |
○ |
■Kuraray Co.,Ltd. Web page about Polyester.
