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NEWSLETTER
AUGUST 2022
Dear <<First Name>>,
Welcome to the latest 4PLAS newsletter, this month we would like to highlight the our 4TECH® Polyamide grades developed for use in Thermoplastic Elastomer (TPE) overmoulding applications.

Overmoulded parts are made in two operations. The base moudling (in this case 4TECH® PA) is made as per standard injection moulding. The parts are then loaded into a second tool where the outer material (in this case ELASTRON TPE) is moulded onto the base. Typical overmoulding applications include seals, gaskets and soft touch tool handle grips overmoulded onto a polyamide base.

TPE's generally give little chemical bond when overmoulded on to Polyamide, so lugs and recesses are generally incorporated to give mechanical bonding instead. However this rarely provides 100% sealing against fluid ingress in a gasket or other seal type application.
As part of the continuing development of our 4TECH® range of high performance technical compounds, we have an ever increasing range of unfilled and glass fibre filled PA6 & PA66 grades which include bonding additives to provide far better chemical adhesion between the base and overmould.

Commercial applications include switches and pipe couplings, where the 4TECH® PA/TPE bond provides excellent sealing properties that standard PA overmoulded with the same TPE's failed to achieve.
For more information on the 4TECH® product range please visit our website. or should you wish to discuss material substitution, new projects, design issues or any of our existing products further, or wish to suggest any topics or specific applications you want us to cover please let us know and we will try and include them.
As always we at 4PLAS are here to discuss materials and offer support to you, our customer during these turbulent times. Please feel free to contact us at enquiries@4plas.com or call us on 0870 446 0424 and we would be happy to assist.
Copyright © 2022 4PLAS LTD, All rights reserved.


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