Material And Manufacturing Process Of Lotion Bottles: A Combination Of PETG Plastic And Blow Molding Technology

Apr 10, 2026

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Emulsion bottles are the core containers for packaging liquid products such as cosmetics and skincare products. Their materials, manufacturing processes, and designs directly affect the product's seal, user experience, and aesthetic appearance.

 

The mainstream material for emulsion bottles is PETG (polyethylene terephthalate-1,4-cyclohexanediol), a thermoplastic environmentally friendly plastic characterized by high transparency, strong impact resistance, and chemical corrosion resistance. It also meets food-grade contact standards, making it suitable for storing cosmetic concentrates, emulsions, and other ingredients. The primary manufacturing process is blow molding-a heated plastic preform is placed in a mold, and compressed air is blown in to conform it to the mold's inner wall. After cooling, a hollow container is formed. This process allows for precise control of the bottle wall thickness, ensuring an error within 0.5mm, while also supporting mass production, with a daily output of up to 10,000 bottles.

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