Abstract

It was found that the type of adhesive used to bond the shavings affected the hot pressing process and the properties of the finished product. The neoprene adhesive is directly poured into the chrome leather shavings, and the slab needs to be dried and activated in the oven at 60ºC for 2~4min. The optimal hot pressing process conditions are 20% sizing, 7ºC, 5min, 3MPa. Pure water should be added to the natural latex adhesive to dilute it, and then the chrome leather shavings are added into the emulsion, the slab does not need to be dried and activated, the best hot pressing process conditions are 21% sizing, water application ratio of 2.5:1, 100ºC, 4min, 5MPa. Due to the obvious differences in molecular weight, chemical composition, glass transition temperature, surface free energy and microscopic morphology of the two adhesives, the water absorption and surface wettability of RL (leather fibres) /Natural Latex are higher than that of RL/Neoprene Adhesive but the air permeability and water vapour permeability are lower than that of RL/NA. The mechanical strength of RL/NA is better than that of RL/NL (regenerated leather / Natural Latex).