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UNI-ALU

https://www.multitaskindustries.be/web/image/product.template/1181/image_1920?unique=65fab5b
  • PU-based mounting adhesive
  • Miter adhesive
  • Tough-elastic adhesive joint
  • Joint filler
  • Foams during curing
  • VOC emission class A+

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14.34 € \ Piece

Internal Reference: D511111

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Textual description

UNI-ALU – Strong 1K PU Adhesive & Assembly Sealant

UNI-ALU is a powerful one-component polyurethane adhesive, ideal for structural bonding and assembly.

The product creates a strong, durable bond and is suitable for a wide range of materials.

Features:

  • High adhesion – extremely strong and long-lasting bond
  • 1K PU formula – easy to apply, no mixing required
  • Moisture-curing – cures into a durable, elastic adhesive layer
  • Wide application range – suitable for metal, wood, concrete, ceramics, and more

With UNI-ALU, you achieve a professional, strong, and durable assembly – perfect for installers and maintenance technicians who need reliable bonding performance.
Use

For bonding corner joints in aluminum windows and doors. UNI-ALU is an ideal mounting and adhesive sealant for the manufacturing of aluminum windows and doors. Suitable for various industrial applications.
Instructions for use

Preparation

  • Let the product acclimatize before use.
  • Ensure that the surfaces to be bonded are dry, clean, and free from dust and grease.
  • Check whether sanding or priming improves the bond, depending on the material.
  • Polyolefins (e.g. PE, PP) cannot be bonded.
  • For corrosion protection on aluminum: apply MTSEAL to the bare cut edges before bonding.

Bonding

  • Apply the adhesive on one side in a bead shape.
  • For non-absorbent materials (moisture content
  • Join and fix/press parts together within skin formation time until adhesion is achieved.
  • Remove excess adhesive immediately.
  • Bond lines > 2.5 mm: longer curing, pressing, and setting times.
  • Bond lines > 5 mm: avoid.

Bonding Metals

  • Aluminum, copper, and brass: bond only on chemically treated or painted surfaces.
  • Aluminum requires specific pretreatment → always test.
  • Anodized surfaces vary greatly → prior testing is essential.
  • Stainless steel: clean with solvent, sand or blast, then clean again for optimal adhesion.

General Information

  • Paint bonded parts only after full curing (risk of blistering if not).
  • Moist adhesive joints must be sealed with a suitable sealant.
  • For materials with different thermal expansion: consider long-term stress from temperature changes.
  • Cured adhesive may discolor due to UV exposure, but strength remains unaffected.
  • Viscosity at +15°C is twice as high as at +25°C.
  • Prefer processing at a stable temperature.
  • Skin formation time, joint, press, and processing times vary greatly depending on material, temperature, humidity, thickness, etc. → always perform your own tests.
  • Product cures through air humidity.

Cleaning

  • Fresh adhesive: remove with MTCLEANER.
  • Cured adhesive: only removable mechanically.

Storage

  • Store in closed original packaging, dry, and at +15°C to +25°C.
  • Protect from direct sunlight.
  • Transport temperature resistance: -30°C to +35°C.
  • Shelf life: 12 months (unopened).
  • During storage: viscosity increases, reactivity decreases.

Important Notes

  • For use only by trained personnel in specialized companies.
  • All usage instructions and technical data are general guidelines and not guarantees.
  • Due to the wide variety of applications, the user must always perform their own tests.
  • Always consult the safety data sheets.
Basis 1K moisture-curing polyurethane
Color White
Viscosity Average viscosity - pasty
Density 1520 kg/m³
Skin formation Approximately 7 minutes (dosing quantity 500 µm-PE/PVC) under dry conditions
Skin formation Approximately 4 minutes (dosing quantity 500 µm-PE/PVC) under wet conditions
Curing time (23°C / 50% RH) 2-3mm/24u
Adhesion Approx. 20 minutes (depending on the application at 20°C)
Dosage amount Approximately 150-200 g/m² (depending on the substrate)
Processing temperature +7°C to +30°C
Tensile strength 7.3 kN at +80°C after 15 hours
Andere info

IFT Rosenheim rapport No. 21-003101-PR01 (PB-K20-09EN-01)