Patent ID: 8808809

Claim:
A method for applying hot melt adhesive powder onto a sole or shoe part comprising the steps of: applying a cleaning agent onto a surface of a to-be-bonded shoe; placing the to-be-bonded shoe in a irradiation chamber and irradiating the surface of the to-be-bonded shoe which has been treated by the previous step with UVC and ozone; applying conductive liquid which has a conductivity at least 100 times higher than purified water having a conductivity of 5.5·10 −6 S/m onto the surface of the to-be-bonded shoe which has been treated by the previous steps; placing the to-be-bonded shoe in a spraying chamber and spraying charged hot melt adhesive powder on the surface of the to-be-bonded shoe which has been treated by the previous steps to make the charged hot melt adhesive powder attached onto the to-be-bonded area of the to-be-bonded shoe; and heating the surface of the to-be-bonded shoe which has been treated by the previous steps by placing the to-be-bonded shoe in a heating chamber to melt the hot melt adhesive powder.