Spacer film for membrane switches

It separates the layers of a membrane switch and maintains the spacing required for its switching function. Cutouts in the film define where contact can occur when the switch is pressed. The manufacturer describes different polyester carriers and adhesive constructions for this purpose. Suitable geometry and thickness depend on the actual switch design; the film alone does not determine how the complete assembly performs.

The number of adhesive sides determines whether the spacer film bonds to one or both adjacent layers. The range includes versions with adhesive on both sides and single sided adhesive polyester films. Before selecting a product, establish which layer needs to be fixed and how the film will be aligned during assembly. Check the adhesive side and liner of the specific product record.

It affects the spacing between the membrane switch layers. For selection, use the total thickness of the specific product without its liner; the carrier and adhesive layers both contribute to that figure. The manufacturer's information shows different constructions, so carrier thickness must not be treated as total thickness. Check the required gap against your design and the actual product.

A drawing of the outer shape and cutouts, the layer construction, required spacing and both adjacent surfaces will help. Include the preferred supplied format and your planned processing step. Krückemeyer GmbH can cut suitable materials or process them into die cut parts. We assess whether the chosen spacer film and geometry suit your application against the specific requirements.