Bag In Cosmetic Bottles

- January 01, 2016 -

DuPont™ Surlyn® is lending its creative freedom to the production of cosmetic bottles and tubes, building on proven benefits in perfume caps and closures. The compatibility of Surlyn® with many of today's cosmetic products opens up new design potential in their packaging. Surlyn® offers the transparency of glass, without the weight and fragility, It can also be frosted, faceted or finished to obtain special effects, or easily colored to create elegant translucency.

Its warm, sensual touch, coupled with functional benefits such as toughness, freedom from chipping and breaking and chemical resistance, is helping Surlyn® gain recognition as a material of choice for the rigid packaging of cosmetic and luxury goods.

The ‘bag in the bottle’ is an innovative and intelligent packaging concept for cosmetics and pharmacy products, developed by the German company Gaplast GmbH and using Dow packaging resins. The outer-bottle, made from a stiff thermoplastic, such as PET, encloses a flexible bag of Dow™ Surlyn®.

An innovative packaging concept, particularly suited for sensitive cosmetic products such as natural cosmetics or active formulas, consists of a flexible bag of Surlyn® attached inside a stiff thermoplastic bottle for dispensing the product. During product dispensing, the inner bag of Surlyn® contracts and separates evenly from exterior bottle wall, creating an air gap and reducing air contact with the sensitive inner bag content. Patented by the German company, Gaplast, the cosmetic bottles can be designed to convey the brand image and maintain its shape despite the contraction of the inner bag.

A further development from Dowoffering designers greater creative potential, and opening further market opportunities for producers of luxury packaging, is the company's Thick-Wall-Bottle technology: a functional inner layer compatible with the contents is combined with a thick-walled outer layer which optimizes properties such as safety-in-use and appearance. Suitable candidates for the barrier layer include various grades of Surlyn® and combinations with other materials, such as polypropylene, polyethylene, and ethyl vinyl alcohol (EVOH). This technology allows a packaging designer to combine transparency with translucency, opacity and different colored layers, as well as frosted surfaces.