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Surlyn and K-Resin are transparent thermoplastics commonly considered for perfume caps, but they provide different balances of appearance, durability, processability, and cost. Surlyn is an ionomer based on an ethylene–methacrylic acid copolymer whose acid groups are partially neutralized with metal ions. These ionic interactions enhance toughness and influence stiffness, impact resistance, and melt behaviour (Spencer […]

For perfume caps, “acrylic” normally refers to poly(methyl methacrylate) (PMMA). PMMA is preferable when luxury appearance is the priority. Forte et al. (2021) identify transparency, tensile strength, and processability as important advantages. PMMA can therefore create glass-like walls, optical depth, saturated colours, and sharply moulded decoration. Its feasibility is demonstrated by a patented three-dimensionally embossed

  Outside View A perfume sprayer looks simple. A finger presses the actuator, and a tiny side opening releases fragrance. Inside that opening is the atomizing nozzle. Below the actuator, a dip tube reaches into the perfume. Each press moves a small quantity of liquid from the bottle to the nozzle and turns it into