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Polyester

What is polyester

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.

Features

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.

Fiber items for high performance papers

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.

For inquiries concerning this fiber and high performance paper, please contact the following: