Kao produced pump dispensers used as membrane for hair colouration

The Kao Germany produces pump dispensers out of thermoplastic elastomers manufactured by KRAIBURG TPE, owing to the chemical resistance and the elasticity of THERMOLAST K products.

This, in turn, is applied as membrane for the brand Goldwell’s hair colouration.

Goldwell is an exclusive supplier of hair care products and hair colourations to hairdressers.

They see to it that hairdressers can apply the hair colour uniformly by means of pressure on the membranes in a new pump dispenser even for the packaging, such as THERMOLAST K compound.

Kao Germany, owner of the brand Goldwell, Packaging Development manager Sebastian Kraus said owing to the chemical composition of the hair colourations as well as the high mechanical stress during the application, they needed a material for the membrane inside the application system, which is capable of withstanding these demands.

"At the same time, the materials have to meet European regulations concerning food contact, which also apply to our hair care products", said Kraus.

Kao Germany produces pump dispensers in a two-component injection moulding process.

This procedure saves time and production costs, unlike the conventional assembly types, claims the company.

"We have already collaborated successfully with KRAIBURG TPE in previous projects several times. That is why it did not take us long to choose the THERMOLAST® K product series as a suitable TPE for our application system."

KRAIBURG TPE in collaboration with Kao and the mould maker reasonably adjusted the production process to the injection moulding unit so that it could achieve a better adhesion to the hard component PP.