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| | | Heater Installation | | |
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| | | Versatile Thermofoil heaters allow a variety of mounting methods. Proper installation is crucial to heater performance. The heater must be in intimate contact with the surface beneath, as any gaps can block heat transfer and cause a hot spot resulting in premature heater failure. Pressure-sensitive adhesive(PSA) | | |
| | | Proper installation ensures good heat flow from the heater to the heat sink | | Voids or bubbles beneath the heater cause localized hot spots which can result in premature heater failure | | |
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| | | | | | | | | | | | Description | Temperature rating | Comments | Installation Instruction* | | | | Acrylic PSA 0.002" (0.05 mm) acrylic film | See heater ordering information | • NASA approved for outgassing • Flat surfaces only, unless aluminum backed | EI 138 | | | | #12 PSA 0.002" (0.05 mm) silicone film | • Flat or slightly curved surfaces | EI 266 | | | | | | | | Description | Temperature rating | Comments | Engineering Instruction* | | | | #6 RTV cement Room temperature vulcanizing silicone for rubber heaters | -45 to 235°C -49 to 455°F | • Distance from center of heater to edge must be less than 5" (127 mm) • 3 oz. (85 g) tube covers 8001300 in2 (5000-8000 cm2) | EI 117 | | | | #15 epoxy 2-part epoxy for Polyimide heaters | -70 to 115°C -94 to 239°F | • NASA approved for outgassing • Bi-pack covers 150-300 (900-1800 crrf) | EI 507 | | | | | | | | | | | |
| | | With factory-applied PSA, you simply remove the backing paper and press the heater in place. | | |
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| | | Epoxy and cement | | |
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| | | Liquid adhesives require more care in application than PSA, but generally provide higher temperature/wattage performance. | | |
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| | | Easy installation methods for cylindrical surfaces | | |
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| | | | | | | | | | | | Description | Temperature rating | Comments | Engineering Instruction* | | | | BM3 shrink band Polyester strip | -73 to 149°C -100 to 300°F | • To order, specify band width and cylinder diameter | EI 103 | | | | BK4 shrink band Polyimide strip | -73 to 177°C -100 to 350°F | | | | #20 stretch tape Self-fusing silicone tape | -51 to 200°C -60 to 392°F | • Comes in 6 or 36ft (1.8 to 11 meters) rolls, 1" (2.54 cm) wide. Figure 25% overlap when calculating length required. | EI 124 | | | | | | | | | | | |
| | | Built-to-order shrink bands are pre-stretched strips of film with adhesive coated ends. Wrap around the heater and heat to shrink. Stretch tape installs quickly with no heat required. | | |
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| | | *Engineering Instructions available at www.minco.com/heaterei/ Clamping Mechanical clamping is required for mica heaters, optional for polyimide, but not recommended for rubber. Call Minco and ask for Minco Installation Instruction EI 347 or go to www.minco.com/heaterei/. | | |
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| | | Factory vulcanization and lamination See page 13 for information on high-performance bonding of heaters to mating parts. | | |
| | | Specifications subject to change | | |
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| | | Access: Minco Sal es and Support | | |
| | | Americas: 763.571.3121 | Europe: (33) 5 61 03 24 01 | Asia Pacific: (65) 6511 3388 | | |
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