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HomeMaterials By SICTouchscreens, Graphic Overlays & Membrane Switches (3575-TS)

Touchscreens, Graphic Overlays & Membrane Switches (3575-TS)

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Touchscreens, Graphic Overlays & Membrane Switches (3575-TS)
A membrane touch switch is a momentary electrical on/off switch for activating and de-activating a circuit. The appearance of these graphic overlays is integral to the operator's view of the equipment. Embossing can be used with either tactile or non-tactile switches but pillow embossing alone does not give a tactile response. A membrane switch is a touch sensitive device created by the printing, cutting and laminating of precision thin film plastic materials. A variety of overlay materials are used in membrane switch applications. Polycarbonate is a commonly used material because it is easy to print on, die cut and emboss – making it a very cost effective alternative. The disadvantage of polycarbonate is that it begins to show signs of wear sooner than some of the alternate materials. In most applications polycarbonate overlays will last a minimum of 100,000 cycles during life cycle testing. Uncoated polycarbonate is also susceptible to damage from a variety of chemicals. If a polycarbonate overlay is going to be in an environment that will subject it to chemicals, a hardcoat should be used to protect the overlay. Polyester is a more robust material that has superior life cycle and chemical resistance properties. In life cycle testing, polyester shows no signs of wear at 1,000,000 cycles. However, polyester, due to its memory properties, frequently requires hydroforming rather than embossing. Hydroforming is more expensive for both tooling and unit cost. Polyester is also more difficult to die cut resulting in more frequent reblading of steel rule dies. Both polyester and polycarbonate are available with a variety of textures and hardcoats. In their uncoated glossy form both materials are very susceptible to scratching. For this reason we recommend that gloss materials receive a hardcoat.

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Acrylite® Resist
(HIS-HIPS) High-Impact Polystyrene - HIPS
High-Impact Polystyrene - HIPS
(POLYCARBONATE AR) Polycarbonate Sheet - A/R Abrasion Resistant
Polycarbonate Sheet - A/R Abrasion Resistant
(Makrofol DE 7-2) Makrofol DE 7-2 Polycarbonate Film
Makrofol DE 7-2 Polycarbonate Film
(BAYFOL CR) Bayfol® CR Polycarbonate Film
Bayfol® CR Polycarbonate Film
(Vinyl-PVC FILMS) PVC Films - Rigid and Flex Vinyl Film
PVC Films - Rigid and Flex Vinyl Film
(PHENOLIC PAPER X) Phenolic - Grade X Paper
Phenolic - Grade X Paper
(Makrofol DE1-1) Makrofol DE1-1 Polycarbonate Film (Gloss/Gloss)
Makrofol DE1-1 Polycarbonate Film (Gloss/Gloss)
(Polycarbonate ESD - Tec 2000) Tec 2000 - Hard-Coated Plastic Sheets
Tec 2000 - Hard-Coated Plastic Sheets
(PETG - UltraTuf™ SG) PETG - UltraTuf™ SG
PETG - UltraTuf™ SG
(Polycarbonate GP Sheet) Polycarbonate Sheet - GP Glazing Grade
Polycarbonate Sheet - GP Glazing Grade
(ProLens Sheet for Aircraft Windows) ProLens® Aircraft Grade Polycarbonate
ProLens® Aircraft Grade Polycarbonate
(ACRYLIC AR SHEET) Acrylite® AR - Abrasion Resistant Sheet
Acrylite® AR - Abrasion Resistant Sheet
(KAPTON HN FILM) Kapton® HN Polyimide Film
Kapton® HN Polyimide Film
(ACETAL COPOLYMER) Acetal Sheets & Rods (Copolymer)
Acetal Sheets & Rods (Copolymer)
(Makrofol PCVE) Makrofol PCVE - Velvet/Gloss
Makrofol PCVE - Velvet/Gloss
(ACRYLIC FILM) Acrylic Film - Impact Modified
Acrylic Film - Impact Modified
Vivak® PETG Sheet
(MYLAR) Mylar® Polyester Film
Mylar® Polyester Film
(Makrofol® EPC films) Makrofol® EPC films (PC-PVF)
Makrofol® EPC films (PC-PVF)
(G-10 FR4 SHEET) G-10/FR-4 Sheets
G-10/FR-4 Sheets

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