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The requirement of hot melt adhesive film on metal flow rate

2016/3/11Click:


The requirement of hot melt adhesive film on metal flow rate. Melt flow rate of hot melt adhesive film (MI) of numerical from macroscopic innermost diologue EVA polymer rheology, mechanical properties and the relationship between the stress cracking resistance. MI decided the EVA under the molten state of liquidity, it and polymer relative molecular mass are closely linked, can serve as a basis for characterization of the size of the relative molecular mass. The increase of melt index, polymer liquidity increases under the molten state; Viscosity, molecular weight, stress cracking resistance, tensile strength, toughness, and the elongation at break and hardness and intensity constant, therefore, in the sealing side of hot melt adhesive film formula, melt index as a reference data is particularly important. Generally melt index, relative molecular mass would be relatively small, that EVA melt viscosity is lower, the preparation of hot melt adhesive film will lower viscosity, liquidity will be better, benefit to the wood surface diffusion penetration, therefore, from the bonding process


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antistop:hot melt adhesive film


Tags: EVA - Vinyl Acetate TPU - Polyurethane



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