Circular Looms Membrane Switch

Membrane switch printing process

Membrane switch is a switch made by printing contact circuit with conductive paste on flexible polycarbonate or polyester film, and it is a kind of contact switch.

Membrane switch is a plane type, multi-layer combination, sealed structure, which is an assembly of electronic complete machine control system integrating key switch, panel function marking, reading display transparent window, indicator light window hole and circuit.

(1) Durability

The life of the membrane switch can generally reach more than one million times. The reason for such a long life is that the action of the switch is only realized by the vertical direction of the elastic membrane. Although the elastic film has undergone millions of times of creep, the creep range is very small, only 0.1~0.3mm (that is, the switching stroke), and the rationality of material selection is far from reaching the yield limit of the film. Therefore, the film material Can withstand more than one million times of life without deformation. On the other hand, the contacts of the switch are in vertical contact, and the amount of wear is very small; while the screen-printed contacts can form a sufficient thickness, and a layer of conductive carbon is printed on the silver paste contacts to achieve high The purpose of wear-resistant and self-lubricating, so the life of the membrane switch is dozens of times higher than that of the mechanical contact switch.

(2) Good sealing performance

Since the membrane switch is an integrally sealed structure, the contacts of the switch are not eroded by harmful gases and are not easily oxidized; it has the characteristics of waterproof and dustproof, so it is more suitable for use in various harsh environments.

(3) Small size, light weight and reliable structure

Membrane switches can be arranged and combined into membrane keyboards in design, with high setting density, and it is a sealed sheet structure composed of multiple layers of membranes. Completed, the total thickness is 1~3mm, so the volume is reduced, the mass is reduced, and the reliability is improved.

(4) Rich colors and beautiful appearance

According to the user's design concept, the membrane switch can reflect the individuality in the design of the color pattern, and the comprehensive characteristics of the beauty of the material, the beauty of the decoration and the beauty of the craftsmanship in the decorative effect.

(5) Reduce the supporting cost of electromechanical products

Traditional mechanical switches need to be welded or even fitted with fixed brackets during installation. The installation of the membrane switch is a sticker type, as long as the adhesive tape is removed, it can be firmly pasted on the surface of the whole machine, and its lead outlet is inserted into the socket of the rear circuit of the whole machine, and the circuit can be connected in an instant. It saves labor and materials, and reduces the supporting cost of the whole machine.

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