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The background to this development is the global movement toward "anti-fluorination".

In order to maintain "water resistance" and "stain-proof" performance a "fluorine compound"*1 has been used on fiber for several decades. Nowadays this chemical is becoming a matter for concern over an adverse effect on the human body and natural environment. Around 2000, this matter had begun to be discussed in all countries of the world and since 2001 the use of this chemical substance has been restricted under the terms of the Stockholm Convention.

*1: Fluorine compound; long chain perfluorinated compound which contains FOA (Perfluorooctanoic acid) and C8 (perfluorooctyl group) compound.


PHOTOS : 1. Miyuki Keori Yokkaichi mill / 2. Water resistant test (spray method, JIS L1092) / 3. Newly developed C-Zero water resistant agent.

What is C-Zero; fluorine free water resistant finish?

This water resistant finish was enabled through the use of a newly developed "C-Zero" water resistant agent and a new processing technique. This agent doesn't contain a "fluorine compound" which causes an adverse effect on the human body as well as the natural environment. It is a healthy, eco-friendly water resistant agent.

As for the initial performance result and durability of the water resistant test, the conventional fluorine free water resistant processing did not achieve sufficient performance. However this newly developed "C-Zero" water resistant agent gives excellent results for both functions. Using this agent, the initial performance result is measured at "grade 5" which is the top level of the function of water resistance. Furthermore, after dry cleaning 10 times, the level is still "grade 3" which shows enough ability to repel water.

*The test result is the average value calculated after a series of tests at Miyuki Yokkaichi mill.


1. At the early stage of "C-zero" water resistance agent application, we can see a clear & beautiful water drop on the fabric.
2. At the early stage of conventional fluorine free water resistant agent application, the water drop doesn't have a spherical shape and we can see a slight dampness in the fabric.

The change in the handle of the fabric is minimised so that the use of the original wool touch is retained.

With their full understanding of wool, Miyuki’s use of the “C-Zero” water resistant agent never harms the fabric handle; the soft bulkiness and smooth drapey touch of the original wool is protected.

To control and minimise adverse effects which can result from the additional finishing with a chemical substance, our long years of development efforts enable us to achieve a fabric which tailors brilliantly and gives great comfort when wearing.

*C-zero doesn't contain an oil repellent function.
*Test results do not ensure this function performs uniformly under all the environments and conditions.
*Test results may change according to the type of base fabric.

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