EVA Special Mould

We're specialized in manufacturing all kinds of extremely complicated shoe moulds, which is designed through computer 2d,3d software and adopt dmu50 evolution 5 shaft linkage process center and cnc assembling to complete high-precision five- sides process flexibly and make bottom part, mould ring and lasts in conformity. Reconditioning,mould closing and finishing. After the mould is carried out cnc processed finishing it will be completed through electric grinding fine arrangement, electric polishing, erosive design, computer lettering, shoe last coordination, and surface technology treatment. Assembly and mould testing. The molding size of product is in accordance with design requirements, and each size realizes the coordinati onuniformly. The size of bottom mold , side ring mold and last of each mold is in conformity with customer requirements. Quality mould regulation. The moulds are carried out strict inspection when leaving company, and they are in accordance with the requirements of receiving inspection. The cavity, core and hardness test is more than hr80centidegree. After the mould is formed, if baked under 400 centidegree high temperature, there is no transformation and no deterioration.
EVA resin is characterized by good softness, rubber-like elasticity, good flexibility at -50C, good transparency and surface gloss, good chemical stability, good anti-aging and ozone resistance strength , Non-toxic. Good blending with fillers, good coloring and molding processability.
It has a great relationship with vinyl acetate content, molecular weight and melt index. When the melt index (MI) is fixed and the content of vinyl acetate (VAC) increases, its elasticity, flexibility, compatibility, transparency, etc. will also increase. When the VAC content is reduced, the performance is close to that of polyethylene, the rigidity is increased, and the wear resistance and electrical insulation are improved. If the VAC content is fixed at a certain time, when the melt index increases, the softening point will decrease, the processability and surface gloss will improve but the strength will decrease. Otherwise, with the decrease of MI, the molecular weight will increase, and the impact performance and environmental stress crack resistance will increase. . The polarity of acetate increases elasticity and viscosity, decreases crystallinity and electrical properties, and dissolves in hydrocarbon solvents and oils.