Hardman/Kalex #04022 Double Bubble Urethane Adhesive D50 User Manual

1. Product Overview

This manual provides instructions for the Hardman/Kalex #04022 Double Bubble Urethane Adhesive D50. This two-component, extra-fast setting structural adhesive is designed for bonding and repairing various materials.

It offers good peel and shear strength, fatigue, and impact resistance. Each packet contains 3.5 grams of adhesive.

Image: Front and back view of the Hardman Double Bubble Urethane Adhesive D-50 packet, showing product name, work time, handling strength, and a mixing stick.

Key Features:

• Semi-rigid, extra-fast setting (3-5 minutes work time).
• Handling strength achieved in 1 hour.
• High lap shear and peel strength.
• Shore hardness: D-50.
• Dries Beige in color.
• Viscosity similar to light syrup.
• Recommended for bonding engineering thermoplastics, SMC, laminated surfaces, and for quick repairs of sporting goods (e.g., skis, snowboards, golf clubs).

2. Setup and Preparation

Proper surface preparation is crucial for optimal adhesive performance. Ensure all surfaces are clean, dry, and free from dirt, oil, grease, and other contaminants.

Surface Preparation Guidelines:

• Cleaning: Use an appropriate solvent or cleaner to remove any residues. Allow surfaces to dry completely.
• Roughening: For best adhesion, especially on smooth or non-porous surfaces, lightly abrade the bonding area with sandpaper or an abrasive pad. This creates a mechanical key for the adhesive.
• Dust Removal: After abrading, remove all dust particles using compressed air or a clean, dry cloth.

Adhesive Packet Preparation:

Image: A four-panel diagram illustrating the steps to prepare and mix the adhesive: 1. Fold pack in half, 2. Cut open one end with scissors, 3. Push out contents with wooden stick, 4. Thoroughly stir combined mixture.

1. Fold Packet: Fold the DOUBLE/BUBBLE package along the center seal. This helps to separate the two components.
2. Snip End: Carefully snip one end of the packet with scissors.
3. Dispense: Squeeze out the contents onto a clean, disposable mixing surface (e.g., a piece of cardboard or plastic).
4. Mix Thoroughly: Using the provided mixing stick or a suitable tool, mix the two components thoroughly until a uniform color is achieved. This is critical for proper curing.

3. Operating Instructions

Once mixed, the adhesive has a limited work time. Apply the adhesive promptly to the prepared surfaces.

Application:

• Apply a thin, even layer of the mixed adhesive to one of the prepared surfaces.
• Bring the two surfaces together within the specified work time (3-5 minutes).
• Apply firm, even pressure to the bonded parts. Clamping or fixturing may be necessary to maintain contact during the initial curing phase.

Curing Times:

• Work Time: Approximately 3-5 minutes at room temperature (72°F / 22°C). This is the time you have to apply and position the parts after mixing.
• Handling Strength: Achieved in approximately 60 minutes (1 hour). At this point, the bonded assembly can typically be handled without disturbing the bond.
• Full Cure: Full strength is typically achieved within 24 hours. Allow the adhesive to cure completely before subjecting the bonded assembly to full stress or load.

Note: Curing times may vary depending on ambient temperature and humidity. Higher temperatures will accelerate curing, while lower temperatures will slow it down.

4. Maintenance and Storage

Storage:

• Store unopened packets in a cool, dry place away from direct sunlight and extreme temperatures.
• Optimal storage temperature is typically between 65°F and 75°F (18°C and 24°C).
• Ensure packets are sealed to prevent exposure to air and moisture.

Cleanup:

• Uncured adhesive can be cleaned with solvents like isopropyl alcohol or acetone. Always test solvents on a small, inconspicuous area first to ensure compatibility with the substrate.
• Once cured, the adhesive is very difficult to remove and may require mechanical means.
• Dispose of used packets and mixing tools according to local regulations.

5. Troubleshooting

Common Issues and Solutions:

6. Specifications

Image: Hardman Double Bubble Selector Guide table, showing compatibility with various metals, plastics, and other substrates for different adhesive types, including urethanes like D-50.

For detailed material compatibility, refer to the Hardman Double Bubble Selector Guide. The D-50 Urethane is suitable for a wide range of materials including various plastics and metals.

7. Safety Information

Always refer to the Safety Data Sheet (SDS) for complete safety information before using this product. General safety precautions include:

• Use in a well-ventilated area.
• Wear appropriate personal protective equipment (PPE), such as gloves and eye protection.
• Avoid contact with skin and eyes. In case of contact, flush immediately with plenty of water and seek medical attention if irritation persists.
• Keep out of reach of children and pets.
• Do not ingest.

8. Support and Contact

For further assistance, technical support, or inquiries regarding the Hardman/Kalex #04022 Double Bubble Urethane Adhesive D50, please contact the manufacturer:

Manufacturer: Royal Adhesives

Please refer to the product packaging or the manufacturer's official website for the most current contact information and support resources.

Website: www.royaladhesives.com