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3M™MicroTouch™ System DST2270DX Integration Guide
3M Touch Systems, Inc. Proprietary Information – TSD-25739
Do not place constant stress on the flex tail during handling or integration. Do not expose
the flex tail to mechanical stresses because of the integration design. Provide adequate
slack to ensure there is no straining on the flex tail. Avoid lateral pulls that may
overstress the outermost electrical contacts on the glass.
The sensor flex tail is designed to be flexible, and it may be creased once in a single
direction, in multiple locations along the flex tail and then secured in position with a
light adhesive tape. Avoid angular creases (45°) to the flex tail directly in the area of the
bond and tape strain relief.
The sensor flex tail should not move freely after assembly. Apply tape or another light
adhesive to secure the flex tail in a manner that does not apply stress to the flex tail.
Apply tape or other insulating material to exposed sharp edges to protect the flex tail.
Route the flex tail away from sharp edges whenever possible. If this cannot be avoided,
secure the tail so it does not move.
Sealing Gasket to Bezel
Proper gasketing is critical to any successful sensor integration. All displays, regardless
of environment, will be exposed to dust, dirt, spills, and grime and should be sealed with
gaskets. Gasketing is relatively simple and straightforward.
3M Touch Systems strongly recommends that you use single-sided 3M vinyl foam tape
4508 for the full-perimeter bezel sealing gasket. This product has been tested and
qualified for this application. 3M 4508 is a durable, flexible closed cell vinyl tape that
can help seal out dust, light and moisture when placed under 30% compression. This
vinyl tape offers excellent aging characteristics and will remain flexible when exposed to
elevated temperatures and UV light. It is essential that the user evaluate any alternative
gasket product to determine whether it is suitable for their particular purpose and method
of application.
Single-sided tapes, adhered to the bezel, make for easy sealing of the sensor. Simply
align and adhere the tape to the bezel edge. Gaskets should contact the sensor perimeter
to ensure a good seal without interfering with the viewing area.
Note:
The compression must be evenly distributed to the glass surface. Be aware of and
follow material manufacturer’s recommended compression specifications.
