Attività

Thin and compact profile: Each plastic layer of a OCA membrane switch can have a thickness of about 0.005 to 0.040 inches. They typically have three to six layers depending on the design. Even applying the conductive and graphic inks and installing other components such as the metallic domes and EMF screens, the final thickness still results in only a fraction of an inch. This makes them suitable for household appliances and equipment controllers with small form factors.

Simple graphic interface construction: The preparation process for the graphic overlay is a straightforward process. The graphics design or artwork can be made from software such as AutoCAD, SolidWorks, and Adobe Illustrator. After creating the artwork, it is digitally printed onto the overlay. There is no need for additional machining processes such as embossing, engraving, or stamping. These additional processes are only done to improve aesthetics and tactile quality. However, digital printing is not the only method of creating graphic overlays. Screen printing is also used by many companies in the industry.

Highly resistant against external elements: One popular advantage of membrane switches is their sealed construction. Sealing is achieved by pressure-sensitive adhesives or heat seals. Plastics such as polyesters and polycarbonates provide a sufficient barrier against moisture and chemicals, without reducing the visibility of the artwork. There are no cavities where hazardous liquids or gases can enter or accumulate. Membrane switches are the desired type of human-machine interface for devices with high protection ratings.

Easy cleaning and maintenance: Since there are no cavities where water, dust, and contaminants can accumulate, membrane switches are easy to clean. The overlay can easily be wiped to remove any dirt. Their complete seal allows them to be subjected to equipment washdowns without any risk of damaging the control circuit. Moreover, because of very few moving parts, membrane switches require almost no maintenance.

Sufficient tactile feedback: When compared to touch screen interfaces, membrane switches have an advantage because of their capability to provide tactile feedback. Tactile feedback is useful in applications where there is a risk of equipment malfunction or shutdown. This is possible when the wrong sequence of keys is pressed. Tactile feedback helps the operator know that the key is pressed.