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W-386 is an emulsion-type adhesive with excellent bonding strength, retention, and curved surface bonding properties.


  • Environmentally-friendly emulsion type adhesive.
  • Excellent bonding strength, retention, and curved surface bonding properties. Of those, excels in heat-resistant retention.
  • Superb bonding properties for various forms.
  • Can be used as a one-component type. Cross-linking agent formulation unnecessary.


Item Base material Measured value
Peel strength (N/20 mm) SUS 21.6
PP 19.0
Polyester-based urethane foam 2.6
Retention SUS Over 24 hours
Constant load SUS 8 mm
PP 15 mm
Curved application 1 SUS Did not peel
PP Did not peel
Curved application 2 SUS Did not peel
PP Did not peel
Ball tack 10
: Peeling at the surface between the adhesive layer and subject
Tape production conditions
: Core backing: Rayon NWF (14 g/m2), Coating amount: single-side 60 g/m2, Curing: 40°C x 2 days
Peel strength
: 180° Peel strength, width 20 mm
: Applied surface area 20 mm x 20 mm, Load: 1 kg, Temperature: 70°C
Constant load
: Applied surface area 10 mm x 50 mm, applied with 2 kg roller run over back/forth twice, 40°C x 1 hour, 300 g load applied in the 90° direction, measured the peeled distance after 3 hours
Curved application
: Applied double-coated tape and a foam sheet, cut a specimen to 40 x 40 mm, wrapped that around a 2 mm thick base material. Measured the peeled distance on the end of the specimen after 24 hours at both 23°C and 80°C. Curved application 1 is ether-based PU foam (6 mm thick, 0.02 g/cm3 density). Curved application 2 is ester-based PU foam (6 mm thick, 0.03 g/cm3 density)
Ball tack
: J. Dow method (23°C, 50% RH)


: Milky-white emulsion
Nonvolatile content
: 50%
: 12,000 – 16,000 mPa·s (@25°C)
: 7.5-8.5
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