LT550SG (LT288C-SG)


Shannon Thermal Blankets are a CAD designed, CNC produced, high quality pre-engineered insulation system designed to save energy, retain radiant heat, minimize insulation maintenance and improve the surrounding work environment. Shannon Thermal Blankets are weather and chemical resistant. Shannon Thermal Blankets are flexible, easy to install, remove and reinstall allowing quick and easy serviceability. The key benefit is re-usability.

Common Applications and Markets:
Shannon Thermal Blanket Applications include; Process Equipment, Extruder Barrels, Extruder Heads, Injection Molding, Blow Molds, Blow Heads/Dies.

Service: Plastic Extrusion Equipment
This design is to act as a Thermal Barrier (Thermal Efficiency & Safety) with a maximum service temperature of 550˚F (288˚C).

Product Components
The Outer Jacket is a 34.0 oz/yd² (1156 g/m²) HD Silicone Impregnated Fiberglass Cloth. The inner jacket consists of 24oz/yd² (816 g/m²) Heavy Duty – Plain Fiberglass Cloth. The Insulation Core Material is an 11 lb/ft3 (176.2 kg/m³ ) Fiberglass Needled Mat-Type E Fiber. The Fiberglass Mat is encapsulated by the outer Silicone Fiberglass Cloth & the Plain Fiberglass Cloth, sewn together, producing a Self-Contained Blanket System. The Shannon Thermal Blanket System includes Integral Fasteners for install & removal.

27” Extruder Barrel

Operating Temp
Surface Temp
Surface Temp
Surface Temp
232˚ C (450˚ F) 25 mm( 1″) 57.2˚ C (135.1˚ F) 40 mm( 1.5″) 47.8˚ C (118.0˚ F) 50 mm (2″) 42.3˚ C (108.2˚ F)
260˚ C (500˚ F) 25 mm( 1″) 62.5˚ C (144.5˚ F) 40 mm( 1.5″) 51.7˚ C (125.1˚ F) 50 mm (2″) 45.5˚ C (113.9˚ F)
287.8˚ C (550˚ F) 25 mm( 1″) 67.9˚ C (154.2˚ F) 40 mm( 1.5″) 55.8˚ C (132.4˚ F) 50 mm (2″) 48.9˚ C (119.9˚ F)

* The above referenced Cold Face Surface Temperatures should be used as guidelines for blanket insulation thickness design.
* The Cold Face Surface Temperature of the blanket should approach surrounding ambient temperature conditions.
* The economic thickness of the blanket should consider blanket cost, thermal performance and blanket design constraints.
* Heat loss calculations are based on a 21.1˚ C (70˚ F) ambient temperature using a flat surface condition.