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D/W
211
PRODUCT DESCRIPTION
D/W 211 is a film, skived from virgin PTFE, that has been etched on
one side with sodium ammonia (D/W 216), after which a primer has been
applied to enhance bonding to elastomers and pressure sensitive adhesives.
This surface treatment allows PTFE, which normally exhibits very poor
adhesion, to be bonded to other materials. In some applications, sodium
ammonia etched materials exhibit somewhat higher strengths than those
etched with sodium naphthalene (D/W 212).
APPLICATION INFORMATION
Applications for sodium etched PTFE include bonding to elastomers to
produce laminated diaphragms, as well as the application of pressure
sensitive adhesives in the production of PTFE pressure sensitive tapes.
In all of the above applications, the lamination or adhesive application
is usually accomplished with a primer that is specific to the material
being applied.
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