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LOCTITE® HHD 3597 – Polyurethane Hot Melt Adhesive – Automotive display structural bonding

  • Item Name: LOCTITE® HHD 3597
  • Manufacturer: Henkel Corporation
  • Product category: Reactive Polyurethane Hot Melt Adhesive
  • Technologies: Polyurethane Hot Melt Technology
  • Applications: Device assembly
  • Color: Black Solid
  • Cure type: Solidification and Moisture cure
  • Package size: Contact to Techniq VN for details.
  • Shelf life: Contact to Techniq VN for details.

1. Product Overview

LOCTITE® HHD 3597 is a one-part, polyurethane-based reactive hot melt adhesive. It provides high impact strength and solidifies upon cooling, then fully cures via moisture exposure.

  • Technology: Polyurethane Hot Melt
  • Appearance: Black Solid
  • Solids Content: 100%
  • Cure Method: Solidification and Moisture
  • Application: Device assembly

2. Applications

LOCTITE® HHD 3597 is suitable for bonding applications requiring:

  • High impact strength
  • Fast initial handling strength
  • Compatibility with automated dispensing (e.g., heating cartridge guns, syringe-type melters)

3. Typical Properties

Uncured Material

Property Value Test Method
Viscosity @ 100°C 6,000 mPa·s Brookfield, Spindle 27
Density @ 25°C 1.1 g/cm³

Curing Performance

Property Value
Open Time @ 25°C 1 – 2 min
Preheating Schedule 20 – 30 min @ 100°C
Application Temperature 90 – 110°C
Final Cure Time 1 – 5 days (moisture-dependent)

Cured Material (7 days @ 22°C, 50% RH)

Property Value Test Method
Lap Shear Strength (Glass to SUS) 8.5 N/mm² (1,230 psi) ISO 4587

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