Although the exact period of time for humans to start wearing shoes is unknown, since mankind invented needle and made clothes to wear 25,000 years ago, we can estimate that shoes made appearances around this time.
Just as clothes were invented to protect our bodies from the cold and hot sunlight, shoes were first developed in cold areas and hot desert areas to protect our feet from freezing or heat from the surface.
Shoes originated from tying and wrapping our feet using a bark, grass, animal skin, or animal hair, and slowly transformed into a fixed shape, and shoes are currently evolving into more functional form, which is more excellent than basic functions of basic shoes.
It prevents feet from slipping or sinking into the snow.
It is usually made by using vine of bower actinidia, ash tree, or Pollack tree.
It was usually worn at the time of rain, and it is for both male and female use.
shoes woon wet grounds due to rain
An overshoe which prevents coldness in times of rain and snow, or which protects shoes
Shoes designed to keep the feet warm by inserting cotton between fabric
All products of Nanotech Ceramics Co. acquire A class from Occupational Safety Authority!
Properties | Units | Results | Inspection Methods | |
Hardness | - | A68/S | KS M 6784:2009 | |
tensile strength | MPa | 22.1 | KS M 6782:2009 | |
300% tension | MPa | 5.4 | KS M 6782:2009 | |
Elongation | % | 610 | KS M 6782:2009 | |
tearing resistance | N/mm | 47.8 | KS M 6783:2009 | |
specific gravity | - | 1IJ4 | KSM 6519:2008 | |
NBS | % | 166 | KS M 6625:2003 | |
DIN | Hoss | 131.6 | KS M ISO 4649:2007 | |
oil resistance | Variation of Hardness | - | -2 | KS M 6784:2009 #3oil (95±) C, 70hours |
volume change factor | % | +0.6 |
Water (Slip Resistance Level in water)
Detergent (Slip Resistance Level in Detergent)
Oil (Slip Resistance Level in Oil)
Company : NANOTECH CERAMICS CO., LTD
Address : 42, Noksansaneopjung-ro 167beon-gil, Gangseo-gu, Busan, Republic of Korea
Tel : +82 51.831.2468 I Fax : +82 51.831.2472
sticokorea@naver.com