4″ wide A Patch Kits/Plastic | repair Plastic & Metal Pipes & Tanks.

4″ wide A Patch Kits provide strong, lasting repairs on Plastic & Metal pipes and tanks. These patches use our proven Polymer Bonding Process (Process) to bond the patch material to the damaged pipe or tanks. The Process works by preparing the surface of the tank to form a molecular bond between the patch and the tank. The result is a permanent repair that will not peel, crack, or fall off.

You can use these Tech Patches on tanks that hold fuel, water, or chemicals. They bond to HDPE, polypropylene, steel, copper, iron, cement, aluminum, etc., tanks. Each kit includes the patch and the Performance Tools needed to make the repair. A heat gun is required.

Instructions

Step-by-Step Process for Permanent Bonding of a Tech Patch to a Plastic, Metal, PVC or Cement Tank or Pipe.

Surface Prep – surface prep is critical

1. Prepare the Surface
   Start by roughing the damaged area of the tank. For metal surfaces, sand thoroughly to a near-white or polished finish. For poly (plastic) surfaces, fought the surface to “below the sheen.” This is critical — failure to do so is a known fail point.
   Next, clean the area completely to remove any dust or residue.
2. Saturate the Poly Surface to “below the sheen”. Clean, remove all residue.
3. The Accelerator
   Spray a light mist of the Accelerator across the prepped tank surface.
   Allow it to dry fully. The Bonding Agent will be applied to the patch.
   

4″ wide A Patches/Plastic

Applying 4″ wide A Patches to a plastic tank.

1. Application Process
2. Apply the Bonding Agent
   Using small, concentric circles, apply the Bonding Agent directly to the patch, not to the tank. The coat must be thorough but not heavy.
   Run a bead of the Bonding Agent along the edge around the entire perimeter.
3. Position the Patch
   Grab the patch by the corners and press it firmly onto the tank.
   Immediately use the glue squeegee to apply pressure from the center outward.
   This step is essential — you’re working to squeeze out every bit of excess Bonding Agent.
   Excess adhesive is the #1 cause of bond failure.  Trapped adhesive =’s failed bond.
4. Apply Heat
   Warm the patch gently until you reach approximately 120 °F (49 °C) — just below “hot” by touch.
   Within seconds, the patch will begin to generate heat on its own. The patch will become hot, reaching a temperature around 135 °F (57 °C), give or take.
   You’ll feel the heat for several minutes — that’s your confirmation the molecular bond is activating.
5. Top Coat Application (Ventilation or a fan required)
   When the patch cools down to about 120 °F (49 °C), apply three coats of the Bonding Agent on top of the patch.  For each coat, run beads of the Bonding Agent on the patch.  Use the glue squeeqee (once per application) to spread the adhesive for each layer.  Again three layers of adhesive are required.
   Spray a light mist of the Activator/Accelerator to the Bonding Agent.  A light mist is all that is needed.

Final Check

1. Final Check
   Inspect carefully. There must be no folds or creases — they will cause the bond to fail.
   In most cases, the repair is complete in under 30 minutes. After the thirty minutes, the tank can be refilled.

Application Notes

• For gas tanks, consider adding a second patch on top of the first if the hole is 3 inches or larger.
• Once bonded, the patch becomes rigid and durable, designed to withstand heat, pressure, and movement.
• Tech Patches are proven in the field. When you follow these directions, they work — every time.

Material Strength

Each Tech Patch is made from PTFE-coated e-glass fabric.
This high-performance composite combines:

• The strength and stability of e-glass,
• The chemical, heat, UV, and abrasion resistance of PTFE,
• A low-friction surface that handles demanding environments.

Critical Fit Reminder

Your patch or wrap must extend at least one inch beyond the entire perimeter of the damage.
This is non-negotiable — failure to extend the patch far enough is a known fail point.

[External article on PTFE-coated fabric] (https://www.heaterk.com/info-detail/applications-of-ptfe-coated-fabric)

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