What mounting methods are commonly used for hopper silicone heating blankets?

The mounting technique is essential for safety, performance, and functional life of the heater. Here are the most frequently used methods, starting from most common:

1. High-Temperature Hook and Loop (Velcro)
A flexible and convenient solution, and particularly useful for smaller hoppers or when the blanket needs to be taken on and off several times.
How it works: Strips of high-temperature rated hook and loop are sewn or adhered to the silicone blanket. The corresponding strip is either adhered to the wall of the hopper (with a high-strength adhesive) or mounted on the opposite ends of the blanket to allow it to wrap and fasten to itself.

Pros:

Easy Installation/Removal: Great option for applications that require frequent on-off cycles of the blanket.

Good Conformity: Adjusts well to shapes of the hopper.

Cons:

Temperature Limit: The hook and loop material must be rated for the maximum operating temperature of the heater (can be rated at 500°F / 260°C for most top quality types).

Adhesive Strength: If using adhesive backed strips on the hopper, the surface must be clean even for the adhesive to take properly.

Not secure: Not suitable for high-vibration environments.

2. High Temperature Adhesives
Used as a primary technique for small blankets, or as a supplement with the intention of improving heat transfer.

How it works: A high temperature silicone based adhesive is applied between the heater and the hopper surface. Some heater manufacturers build a pressure sensitive adhesive (PSA) into their heaters, protected with a peel-away liner.

Pros:

Excellent Thermal Contact: It eliminates air, providing maximum efficiency heat transfer.
Permanent Mount: It's a physically very secure, and clean looking alternative to other mounting techniques.

Cons:
Permanent: It will make removal later difficult, and will usually ruin the heater.
Surface Prep: The surface of the hopper must be completely clean and free of oxidation ('rust'), oil, grease, and dirt/stevil, to ensure it bonds appropriately.
Curing Time: Some (not PSA) adhesives will require a timely cure time.