| 摘要 |
The skin, after retanning, is treated on its surface which is intended to constitute the outer face of the uppers in order to form, there, a multiplicity of superposed layers, each of which is chosen in order to adhere to the underlying layer and to permit, without prior carding or scouring of the skin thus treated, either the direct injection of soles made from PU, TR, PVC, etc., or the welding of a prefabricated sole. |
