Prodn. of rubber shoe and boots at lower cost - comprises putting elastic, non-calendered fabric on outside of aluminium former in shape of boot, cutting elastic fabric and sowing to obtain tubular lining, etc.

摘要

Prodn. of rubber shoes or boots comprises putting an elastic, non-calendered fabric on the outside of an aluminium former in the shape of the boot; cutting the elastic fabric and sowing to obtain a tubular lining of the same shape as the former; spray applying a layer of glue to the outside of the lining; applying a layer of glue that will obtain a good union of the lining to the following rubber; apply to the prepared surface a layer of rubber that will form the outside of the boot; applying the sole, bands and joint covers; and curing the assembly in an autoclave at 140[deg]C. and pressure of 3 kg/cm2.