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H.B. Fuller EV Bond 720

H.B. Fuller EV Bond 720 is designed to set quickly and strengthen within 3-4 minutes. Fully moisture-cured material displays excellent high temperature strength, tested up to 120°C. Rapid shipment of bonded parts is possible, as H.B. Fuller EV Bond 720 will not flow or expulse at 120°C, preserving bonded geometry at high temperatures before fully moisture-cured. This patented reactive hot melt moisture curing material is a one component polyurethane, 100% solid adhesive. Excellent adhesion strength is achieved within 10 seconds to 3 minutes after dispensing. This product has aggressive hot tack and cures in the presence of moisture into a tough bond. It works well in bonding various plastics, woods, metals, and primed glass substrates.

Product Type: 1K (1 component) Adhesive, Hot Melt Reactive Adhesive, Solvent free (100% Solids) Adhesive

Compatible Substrates & Surfaces: Glass, Glass, Primed, Metal, Plastics, Wood

Chemical Family: Polyurethanes (PU)

Features: Dimensional Stability, Excellent Initial Seal Strength, Fast Setting, Good Adhesion, Good Thermal Stability, High Temperature Strength, Hot Tack Strength, Low Outgassing, Low Temperature Flexibility, No Expulsion During Application, No Flow During Application, Quick Strengthening

Technical Data Sheet
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Enhanced TDS

Identification & Functionality

Chemical Family
Polyurethanes (PU)
Product Type
1K (1 component) Adhesive,
Hot Melt Reactive Adhesive,
Solvent free (100% Solids) Adhesive
Technologies
Adhesives & Sealants
Product Families
Adhesives & Sealants — Bonding Technology
Hot Melt Reactive Adhesives

Features & Benefits

Ready-to-Use Product Features
Dimensional Stability,
Excellent Initial Seal Strength,
Fast Setting,
Good Adhesion,
Good Thermal Stability,
High Temperature Strength,
Hot Tack Strength,
Low Outgassing,
Low Temperature Flexibility,
No Expulsion During Application,
No Flow During Application,
Quick Strengthening
Key Attributes
  • Fast initial set strength, building 50% of its maximum cured strength within the 3-5 minutes after bond allowing short wait for pressure testing.
  • Rapid Dimensional Stability
  • Good low temperature flexibility
  • One component requires no mixing
  • Low outgassing
  • Excellent manufacturing thermal stability

Applications & Uses

Compatible Substrates & Surfaces
Glass,
Glass, Primed,
Metal,
Plastics,
Wood
Cure Method
Moisture Cure
Application Instructions
  • H.B. Fuller EV Bond 720 is designed to be used with heated platen-style melting machine that transfers material from pails or drums to a nozzle enough to form a bead and dispense into the housing.
  • Substrate surface must be clean, dry, and free from oils and dust.
  • Non-polar substrates must be surface treated (e.g. plasma treated) prior to adhesive application.
  • If the equipment is to be shut down for extended periods of time, we suggest purging the system with H.B. Fuller Swift®Clean 9037.

Properties

Color (Properties)
Black
Physical Form
Solid
Cured Properties
ValueUnitsTest Method / Conditions
Hardness90 - 95-ASTM D2240, Shore A
Ultimate Tensile Strength18.0MPaASTM D638, Type V
Elongation (at Break)150 - 200%ASTM D638, Type V
Young's Modulus200 - 250MPaASTM D638, Type V
Lap Shear Strength (at 23°C)7.0MPaASTM D3163 (Polycarbonate to Polycarbonate)
Lap Shear Strength (at -30°C)1.85MPaASTM D3163 (Polycarbonate to Polycarbonate)
Lap Shear Strength (at 120°C)1.89MPaASTM D3163 (Polycarbonate to Polycarbonate)
Processing Properties
ValueUnitsTest Method / Conditions
Application Temperature160 - 180°C-
Viscosity (at 163°C, 10 rpm)13,000 - 18,000mPa.sASTM D1084, Spindle 27
Specific Gravity1.16g/cm³HBF Internal: TMHM-017
Open Time90.0secondsASTM D3163, Adhesive Bead
Clamping/Fixture Time3 - 4minutesHBF Internal
Over-Lap Shear Initial Strength (at 3 minutes)1.3MPaASTM D3163 (Polycarbonate to Polycarbonate)

Technical Details & Test Data

Curing Profile

Under standard conditions (23°C, 50% RH), full cure will take approximately 14 days. Any deviation from standard conditions will change the cure rate. Additionally, cure rates and completeness of cure will vary with adhesive thickness and the substrate's moisture permeability.

Packaging & Availability

Country Availability
USA
Packaging Type
Drums,
Pails
Regional Availability
  • Europe
  • USA
Typical Packaging
  • 286mm diameter pails (USA size)
  • 280mm diameter pails (Europe size)
  • 55 gallons / 200-liter drums

Note: Packaging may contain liners.

Storage & Handling

Shelf Life
12 months
Storage Conditions
  • Product should be stored in a clean and dry condition in an original and unopened container between 10°C and 35°C.
  • Shelf Life: 12 months from date of manufacture, in original unopened container at 23°C.