Aluminium mould sealant tape is a specialized sealing material commonly used during the installation of medium and high voltage cable joints. Its primary function is to create a moisture-proof, pressure-resistant, and formable moldaround the joint area during resin or gel filling, ensuring the correct shape and containment for the filling compound.

Key Features and Properties:

1. Aluminium Foil Backing:

• Provides formability and mechanical strength, allowing the tape to maintain shape during the casting process.
• Acts as a barrier against moisture, heat, and resin leakage.
• Reflects heat, aiding in the curing process for heat-activated or thermosetting resins.

1. Sealant Adhesive Layer:

• Backed with a pressure-sensitive, mastic-like or butyl-based sealant.
• Offers excellent adhesion to cable surfaces (PVC, XLPE, rubber, etc.) and other joint components.
• Ensures tight sealing, preventing resin leakage and moisture ingress during the jointing process.

1. Flexible and Conformable:

• Can be easily shaped around complex joint geometries, cable contours, and irregular surfaces.
• Compatible with both heat shrink and cold shrink jointing methods.
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Applications in Cable Joints:

1. Forming a Resin Mould:

• Commonly used to create a temporary mold around a joint area before pouring or injecting joint resin.
• Ensures the resin remains in place and cures in the desired shape.

1. Sealing of Entry/Exit Points:

• Used at cable entry/exit points of joint kits or enclosures to prevent resin leakage and moisture intrusion.

1. Mechanical Protection:

Acts as a protective barrier during installation and curing, preventing damage to inner components and maintaining pressure inside the mold.