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1. (WO2003076504) EVA POLYMER COMPRISING CHARCOAL AND METHOD TO MANUFACTURE THE SAID EVA POLYMER

Pub. No.:    WO/2003/076504    International Application No.:    PCT/KR2002/000562
Publication Date: Sep 18, 2003 International Filing Date: Mar 29, 2002
IPC: C08J 9/00
Applicants: PARK, Ho Sam
Inventors: PARK, Ho Sam
Title: EVA POLYMER COMPRISING CHARCOAL AND METHOD TO MANUFACTURE THE SAID EVA POLYMER
Abstract:
The EVA polymer according to the present invention, which is manufactured by blending charcoal powder with ethylenevinylacetate at the certain proportion, can absorb sweat, remove bad smell of foot, and further prevent dermatophytosis and humid tetter due to the charcoal when it is applied to the manufacture of insoles. The method to manufacture the EVA polymer comprises: step (a) of admixing charcoal powder to ethylenevinylacetate with the charcoal powder's ratio ranging from 5 wt % to 30 wt % and blending them; step (b) of admixing crosslink agent and foaming agent to the mixture and blending them with the 22-inch roller; step (c) of descending the mixture using the 18-inch roller; step (d) of sheeting the mixture by calendering process using the 12-inch roller and cooling it; and step (e) of putting the cooled sheet into the mold and pressing it to foam with the pressure of 3.5kg/cm2 to 6.5kg/cm2.