DuPont: High-gloss, soft-touch or antistatic surfaces using packaging polymers from DuPont

Packaging materials from DuPont provide a range of high-quality surfaces for ‘tottles’ (a combination of the words tube and bottle). Used for the outer-skin, DuPont Surlyn® offers a high-gloss finish, DuPont Elvaloy® AC creates a soft-touch surface, whilst DuPont EntiraAS provides durable antistatic properties. ‘Tottles’ enable the producers of bodycare products to communicate specific marketing messages by means of the packaging, providing a cost effective alternative for product differentiation. This new packaging concept, initially created by DuPont, has been implemented in cooperation with Kautex Textron GmbH & Co. KG, Bonn, Germany.
‘Tottles’ with Surlyn provide a scratch-resistant, high-gloss surface, without the need for additional lacquering – as would be required for other materials such as PE-HD. Furthermore, they are easily printable using all current processes. Thanks to the high transparency of Surlyn®, the overprint provides an appealing ‘depth effect’ on top of the opaque background of the PE-HD inner-skin. Semi-gloss or matte surfaces can be created by using special textures in the moulding tool. The use of Elvaloy® AC acrylate copolymer for the outer-skin creates a softtouch, non-slip silk like and easily printable surface. Its hardness is determined through the selection of the Elvaloy® AC grade. Despite their anti-slip surfaces, the ‘tottles’ can be filled in standard production lines as they do not stick to each other – a common problem with ‘tottles’ made with rubber surfaces.
DuPont EntiraAS (the new brand name for a permanent antistatic additive) is a non-migrating static inhibitor, which is compatible with polyolefins. ‘Tottles’ with a PE-HD outer-skin and EntiraAS exhibit long-term resistance to both dirt and dust attraction, and can be easily printed or adhered to.
The ‘tottles’ are coextrusion blow moulded with PE-HD as the base material. Commonly they consist of 90 to 95 percent PE-HD and 5 to 10 percent Surlyn, Elvaloy® AC or Entira. When using Surlynand Entira AS, the additional use of DuPont Bynel® is required. Possible further developments of the ‘tottle’ concept include the use of transparent polymers for the base material and an outer-skin of Surlyn.

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