Installation of Adhesive Backed Silicone Rubber Sheet

The installation of adhesive backed silicone heaters will be most successful with the following procedure:

  • Surface must be unified, dry and free of contaminants
  • Firm pressure must be applied to silicone rubber sheet in order to maximize surface contact
  • Time and temperature will increase the surface contact and adhesion values

Recommended surface temperature is 70ºF to 100ºF (21ºC to 38ºC). Temperatures below 50ºF (10ºC) is not recommended for installation of adhesive backed rubber sheet.

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What to Look for in a Silicone Rubber Heater Manufacturer

When purchasing a flexible silicone rubber heater, it’s important to truly evaluate silicone rubber heater manufacturers to ensure that you will receive a high quality product which is well-suited to providing the heating solution you seek.

Key Considerations

Good quality silicone rubber heater manufacturers will have answers for the following considerations:

1. Thermal Analysis

Silicone rubber heater manufacturers should have the ability to perform a thermal analysis for your project. Many times a customer knows the temperature they need to heat the materials to but perhaps doesn’t to know how much power is required. For example, if a 20 lb. stainless steel vessel contains 16 pounds of liquid and the target temperature is 230F, silicone rubber heater manufacturers need to be able to calculate the required power to ensure the heater can accomplish the heating task. This is especially true when you need your heater to be able to reach a target temperature within an allocated amount of time. You simply don’t want to be waiting all day for the process to begin!

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Heated Silicone Rubber Sheet Uses

CHR has provided silicone rubber heaters for a wide variety of applications including US Military industrial, petro-chemical, food processing, tank heating, battery warming, electronics (particularly telecommunications), composite repair for the aerospace industry, satellite dish snow melting, and anti-condensation.

The range of silicone rubber sheet uses is really unlimited; here at CHR we can assist you to find the proper high temperature silicone sheets for your heating needs.

CHR silicone heating sheets have been the heating solution ranging from the North Pole to Outer Space!

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How a Silicone Heating Pad Works

Silicone style heaters are versatile and can be used in a wide variety of applications. Silicone rubber, which is used to produce flexible silicone heater pads, has a low thermal mass, excellent electrical insulation and rugged construction.

When you need heat to be a precise temperature, silicone heating pads provide the best solution. Applying heat directly to the item can be accomplished by either strapping the heater on via hooks-n-springs or separate straps or utilizing our All Weather, High Temperature PSA (Pressure Sensitive Adhesive). CHR utilizes a propriety PSA which was created by Nitto Denko Corp. and allows our silicone heater pads to be installed in areas with complex shapes and have excellent direct contact. This makes the heating process very efficient. This is especially useful when working with a high watt density heater and ensuring intimate contact with the object to be heated.

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Silicone Rubber Properties of Silicone Rubber Heating Blankets

Silicone rubber is ideally suited for the production of heater mats with its low thermal mass and superb electrical insulation properties, it allows high power densities with fast response to temperature control.

One of the important properties of silicone rubber is that it has a wide temperature range tolerance of – 60°C to 230°C. It’s also thin and lightweight, which gives it a distinct advantage over other forms of heating elements. Where direct precise and intimate heating is required, a silicone heating blanket is the ideal solution.

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Grounding Screen for Silicone Heaters

Grounding Screen for Silicone Rubber Heaters

Custom Heaters and Research Inc. can manufacture flexible silicone heaters with an integrated Grounding Screen (earth screen) that offers protection in case of puncture of the outer insulation layer resulting in contact with the live heating circuit. The full coverage Grounding Screen(earth screen) provides continuity of any ground fault back to the protection device of the electrical supply such as residual current device (RCD) or ground flow circuit interrupter (GFCI). Any electrically conductive surface that the heater is fitted to should be grounded separately.

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Heaters are formed to go around the individual battery cells

Battery Heating Solutions

CHR Inc. offers Battery Heating Elements that can meet the requirements to keep batteries warm for the applications described below as well and many other applications.

  •   Aircraft batteries while the plane sits in cold areas
  •   Batteries of airport runway lights which serve as back-up should there be a power outage
  •   Batteries on Cell Phone Towers which serve as back-up
  •   Batteries on US Military equipment in the field (CHR Inc, is ITAR Registered)

Rugged, powerful and efficient Custom Heaters and Research Inc. can create the proper solution to your battery heating needs.  

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Etch Foil Heater

Etch Foil Heater

Wire Wound Ready to Seal

Wire Wound and Etched Foil Heating Elements

Etched Foil – custom heating elements patterns are created by our Design & Engineering Staff.  These patterns can be very precise and include accurately place holes/cut-outs, and even have certain areas have more power (higher watt density) that other areas if needed.  These intricate patterns are then manufactured using various foils which have different electrical resistances, these are literally “etched away” by an acid process leaving behind only the desired heating element pattern to create the exact power/watt desired.

Wire Wound – hand made on custom manufactured jigs, these are excellent for prototypes and low volume needs or when the heaters will be “man handled” in their use, such as 55 Gallon Drum Heaters. These only incur a lower cost Design and Small Tooling fee as there is not the cost of creating the tooling for the Etched Foil Heating Element.

Wire wound:  37” wide x 120” long (can be longer if coiled in the vulcanizing oven for added cost)

  • Better for low volume (less than 20) because there is not the cost of creating the Etched Foil Heating Element Tooling Fee needed to create the Foil element
  • Better at being flexed and bent in a rugged or abusive way

Etched Foil:  23.4” wide x 120” long (this is as wide as we can create the heating track)

  • Much lower cost for higher volumes due to more automated process
  • NOT as good for being flexed and handled in a rugged or abusive manner (it can be flexed if not abusive)
  • More heating area coverage – most even heating

Etched foil single heater

Wire Wound Jig

Wire wound heater QC

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