Elastomer products formulated for bondability
A
RTP Company product story
Edited by the Engineeringtalk editorial team
Mar 17, 2004
The first in a new series of functional thermoplastic elastomer compounds are formulated for specific properties and optimised performance.
Specialty compounder RTP company has introduced the first in a new series of functional thermoplastic elastomer compounds that are formulated for specific properties and optimised performance.
The first commercial grades to be released - RTP 6002 and RTP 6003 - have been specifically developed for improved bonding in two-shot or insert overmoulded applications.
Each of these new products is available in hardnesses of 45, 55 and 75 shore A.
"Overmoulding with elastomers is a way to add value and functionality to an application", explained Paul Killian, Product Manager for Elastomers at RTP Company.
"The addition of an elastomer can provide better grip performance, improve aesthetics, or provide sound/vibration dampening, as well as offer protection from impact and/or drop forces to an application.
In any overmoulding process, however, the critical element is the bond between the soft elastomeric material and the rigid substrate.
This property is essential for part success and a long life cycle for the application in the field".
RTP Company has used its broad portfolio of elastomer resin systems to develop these products that are optimised for bonding to different substrates.
RTP 6002 is formulated for improved bonding to PC, ABS, and PC/ABS, whereas RTP 6003 offers better bonding to PC/PBT and PC/PMMA.
"These two products have been developed to bond to standard off-the-shelf substrates as well as with RTP Company's custom compounds and precoloured materials", added Killian.
A major benefit of these new products is that they offer moulders a comfortable processing window.
Explained Killian: "For a successful bond to occur during over- moulding it's critical to have the proper processing and design conditions.
Many injection moulders are very aware of this.
However, some are not.
One of our goals during development was to be able to offer products that have the widest possible processing window for the injection moulder".
In addition to its elastomer technologies, RTP Company also has extensive experience developing rigid substrate materials.
"This is a real competitive advantage for us", said Killian.
"Bringing this combination of know-how to the table enables RTP Company to work with customers on both the rigid substrate and the overmould material in order to optimise the combination for overall performance and bondability".
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