Acrylic (PMMA) Versus Polypropylene in Perfume Caps
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
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