Raw Materials & Polymers
Heavy-Metal-Free Polyester Chip
A polyester chip*1 that does not contain any heavy metal*2 (antimony-free) and comprises a titanium-based catalyst developed using Teijin's unique technology.
The chip does not contain any antimony-based catalyst*3 (listed as a substance subject to the regulations by Japan's PRTR Law) , which is commonly used for textile polyesters.
No harmful heavy metals are eluted even in post-processing steps such as dying and alkali volume reduction.
The component catalyst does not dissolve even when the chip comes in contact with food etc.
Deposition of foreign matter around the socket is minimized to lenghthen the interval of cleaning work several folds.
The heavy-metal-free polyester chip used
A chip comprising an antimony-based catalyst used
Figure：A photograph of socket hole after spinning at 295℃ for 48hours
The chip is effective not only in improving polyester dyeability, but also in improving yarn processability.
Environmental load reduction
The metal content ratio is low at one-tenth of that of antimony catalyst, thus reducing the amount of metal contained in the finished product.
Examples of applications
- Pet goods
- Food packages
- Medical devices
Polymer products lineup
|Copolymer type||Low melting point||0.65||–||220|
These physical properties may be adjusted to meet your demand.
This chip is patented for Teijin's unique technology.
A heavy metal is defined as a metal having a specific gravity of 5 or more.
Diantimony trioxide is used as an antimony-based catalyst, and listed as a Substance to Undergo an Extensive Risk Assessment, specified by Japan's Ministry of Health, Labor and Welfare as of FY2011.