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Flame retardant film is a kind of hot melt adhesive film with flame retardant function. As a polymer material, hot melt adhesive film needs to put forward flame retardant functional requirements for adhesive products, so that the finished product has a higher fire retardant grade and increases the safety of its use. In the production process of flame retardant film, flame retardant is equipped in its raw material formula, and the flame retardant and raw material particles are blended and granulated. The prepared particles are then put into the film production machine, and the flame retardant film is produced by coating or casting.