New sponge insole and preparation method thereof

Abstract

The invention relates to a new sponge insole and preparation method thereof. Preparation method of the invention comprises steps of: 1) first placing standard rubber to a rubber open mill to plasticate and to thin until plasticity reaches 0.6 to 0.65, stopping, cooling, checking for spare use; 2) casting the plasticated standard rubber to a rubber mixer to plasticize for 1 min to 2 min, adding accelerator M, accelerator DM, zinc oxide, stearic acid and antiager RD, stopping the mixer; after plasticizing for 2min, adding hemp and softening oil to plasticize adequately, then adding brimstone and foaming agent H; discharging after plasticizing for 30s and tabletting, cooling and checking for spare use after turning evenly on a flat-bed machine; 3) squeezing, calendaring plasticized sponge gelatine and die cutting the same to rubber pieces, then adhering insole on the rubber pieces, packing the same to a flat vulcanizing machine to vulcanize; 4) finally combining the vulcanized sponge insole with other parts of the rubber shoes via a rubber shoe forming device to vulcanize by hot air in a digestor.

Description

technical field

[0001] The invention relates to a sponge midsole for making rubber shoes, in particular to a novel sponge midsole and a manufacturing method thereof. Background technique

[0002] The sponge midsole is an essential part of rubber shoes. On the one hand, some inorganic fillers, such as clay and calcium carbonate, are used in the previous sponge midsole rubber formula, which has a large proportion and increases the weight during wearing. The human burden, walking the same distance, tends to consume more energy of the human body and make people prone to fatigue. On the other hand, under normal circumstances, during the wearing process of rubber shoes, due to the heat generated by sports friction, the soles of the feet are prone to sweating, and the sponge midsole absorbs sweat poorly, resulting in damp inside the rubber shoes, which will produce odor after a long time, and bacteria in dark and humid places It is easy to reproduce in the environment, which makes...