Heavy-Metal-Free Polyester Chip
What is the 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.
Examples of applications
► Pet goods
► Food packages
► Medical devices
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
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.
► Increased productivity Deposition of foreign matter around the socket is minimized to
lenghthen the interval of cleaning work several folds.
► Quality improvements 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.
Polymer products lineup
|Copolymer type||Low melting point||0.65||-||220|
*1: This chip is patented for Teijin's unique technology.
*2: A heavy metal is defined as a metal having a specific gravity of 5 or more.
*3: 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.
Raw Materials & Polymers Business Planning and Sales Department, Teijin Ltd.