Bostik Automotive


Supergrip® 1578-164

SG1578-164 is a solvent-free, one-component, moisture curing hot melt, automotive urethane adhesive. This product is supplied in a solid form and is applied like that of a bulk hot melt adhesive. Once dispensed, the automotive exterior adhesive will react with ambient moisture to yield a cross-linked thermoset adhesive. Heat is not required for cure to occur.

    Where to use:
  • Trunk Liner Bonding
  • Package Tray Attachment
  • Exterior Trim Piece Bonding
Pillar Technology

Elastic Bonding (EB)


Reactive One Component (R1K)


Hot-melt Polyurethane (Reactive Hot Melt)

Key Features

  • Excellent green strength and quick tack
  • Excellent creep resistance
  • Long open time

Key Benefits

  • Quick processing of assembly fixtures
  • Easy repositioning and handling
  • Bonds well to a wide variety of substrates

Shelf Life

The shelf life of SG1578-164 is twelve months at 23°C (73°F) in unopened factory sealed containers. Due to product moisture sensitivity, shipping containers must be kept tightly sealed and opened just prior to product use.

Health and Safety Precautions

SG1578-164 contains di-isocyanate, it is preferable to avoid contact with the skin and with food products. This precaution only applies to non-cured adhesive in its delivered state. Refer to the product Safety Data Sheet (SDS) prior to use for complete cautionary information.

Application Techniques

The typical application temperature range for SG1578-164 is 110°C – 120°C (230°F – 248°F). Refer to the product SDS prior to use at temperatures greater than 120°C (248°F). Adhesive application is best conducted using direct pail or drum melting systems. These systems may be equipped for adhesive application via bead extrusion, swirl spray, or roll coating methods. Adhesive cure rate is dependent upon substrate type and moisture permeability, relative humidity, and temperature. The optimal curing conditions are 50% relative humidity and 21°C (70°F). SG1578-164 will develop adhesive properties within 24 hours. Under optimal conditions, the adhesive will achieve final properties after seven days.

Cleanup Procedure

Since SG1578-164 is applied at elevated temperatures, it is advisable to clean the equipment regularly with an appropriate cleaning agent such as Supergrip® PURGE

Basic Uses

SG1578-164 can be used in a variety of general product assembly applications. Additional uses include rigid panel bonding and laminating, seating applications, and door panel laminating.

Typical Physical Properties
Thermosel Viscosity15,000 cP (120°C)
Density9.6 lb/gallon (1.15 g/cm³)
Green Strength (3 min., ambient conditions)60 psi (410 kN/m²)
Open Time5 – 9 min. for a 10 mil film at ambient conditions
ApplicationTemperature110°C – 120°C
Typical Properties of cured film
Cure Conditions7 days @ 25°C, 50% RH
Tensile at Break1,050 psi (7,240 kN/m²)
Elongation at Break830 %
Water / Chemical ResistanceExcellent
Heat Resistance379°F (193°C)

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