Nor-cote and 3M have developed a UV-cured, screen-printable adhesive for
a variety of applications in the electronics, membrane switch and
automotive industries. The liquid PU-acrylate SP-7514 adhesive is
suitable for both flatbed and rotary screen-printing, and can be
processed faster and more consistently than solvent or water-based
materials. After curing, it behaves like a typical pressure-sensitive
adhesive tape, and can be laminated immediately or protected with a
release liner for later use.
The material is particularly useful for intricate applications such as
keypads or automotive instrument panels. Outlines of less than 25um
thickness can be printed and, unlike die-cut adhesive films, no tooling
is required and no cutting waste is generated. As the adhesive will not
dry on the screen, processing equipment does not need to be periodically
cleaned. Combined with the fast UV curing, this can increase overall
productivity by as much as 40%.