H.B. Fuller AT-2

H.B. Fuller AT-2 very high-bond strength acrylic tape is a pressure-sensitive, gray, foam core acrylic tape system. It is designed to provide a superior bond between a wide variety of substrates. The tape possesses a uniform, high-tack acrylic adhesive on both surfaces and will bond to most clean, dry, oil-free substrates.

Chemical FamilyAcrylics & Acrylates

Product TypeFoam Tape, Pressure Sensitive Adhesive, Tape

Application AreaAppliances, Automotive Interior Trim, Furniture

FeaturesEasy To Apply, Excellent Surface Tack, Flexible, Good Adhesion, Good Moisture Resistance, Good Moldability, Good Weather Fastness, Low Brittleness, Shock Resistant, Vibration Resistance

Technical Data Sheet

Enhanced TDS

Identification & Functionality

Backing Material Type
Chemical Family

Features & Benefits

Features and Benefits

AT-2 offers numerous advantages including increased compressibility, a waterproof bond, ease of application, and the ability to withstand thermal movement.

  • Pressure sensitive bonding
  • Compressible with foamed core
  • Moisture resistant
  • Excellent weathering properties
  • Maintains adhesion at sub-zero temperatures
  • Hardening or brittle resistant with age
  • Flexible - conforms to intricate shapes

Applications & Uses

Typical Applications
  • Automotive trim attachment
  • Signs
  • Graphics
  • Window muntin bar attachment
  • Furniture
  • Appliances
  • Many other manufacturing and construction applications toreplace mechanical fasteners and welds
General Instructions

1.Substrate Evaluation: Acrylic adhesive is suitable for bonding avariety of substrates, including many plastic composites, sealedwood, and metals. Low surface energy materials such aspolyethylene, polypropylene, silicones and PTFE can be difficult tobond to. Thorough evaluation is recommended when bonding toany questionable surface. An adhesion promoter (primer) for usewith pressure sensitive acrylic adhesives may be necessary tofacilitate proper bonding, and is available from H.B. Fuller.

2.Preparation of Substrate: The substrate to be bonded should becleaned with an appropriate solvent, preferably isopropanol (IPA).The acrylic adhesive backed part should be applied within 15minutes of cleaning. To ensure removal of all contaminants withoutleaving any residue, use a clean, lint-free wiping cloth or disposablewipe. Never use recycled rags. Other solvents such as hexane,heptane, or methanol may be suitable for cleaning varioussubstrates after thorough evaluation. The substrate must becompletely dry through evaporation of the solvent with radiantheat, hot air dryers, or with time before bonding acrylic adhesivebacked parts.

3.Adhesive Promoter Application-If necessary: Apply the AP-1Adhesion Promoter to the substrate(s) either with a lint-freeapplicator or foam brush. Apply the Adhesion Promoter in a “wet”laydown thickness range of 1-8 mils. Allow the Adhesion Promoterto dry approximately 5 minutes. Don’t touch the AdhesionPromoter.

4.Application of Adhesive Backed Part to the Substrate: Removethe protective release liner from the acrylic tape immediately priorto applying the part to be bonded, being careful not to contaminatethe acrylic adhesive. Apply within 15 minutes after surfacepreparation. Apply the part to be bonded without entrapping airbetween the tape and the substrate with a recommendedminimum application pressure of 15 pounds per inch of tape widthto achieve adhesive to substrate contact and maximum bond

Properties

Color
Technical Data
ValueUnitsTest Method / Conditions
Elongation900.0%ASTM D412 Die C
Dynamic Shear415.0kPaASTM D3163
Tensile Strength960.0MPaASTM D412 Die C
Service Temperature- 34 - 93°C
Application Temperature10 - 38°C

Technical Details & Test Data

Technical Data
Property Typical Value Test Method
Static Shear Passes at 74°F
Passes at158°F
WSB-M3G138-B (1000g, 1 in², 100hrs)
90° Peel Adhesion 4 N/mm ASTM D3330
UV Resistance Maintains minimum 90% of initial strength 2 weeks UV-A at 140°F
  • Thickness ranges from 0.64mm to 1.5mm (0.025” to 0.060”)
  • Width ranges from 6mm to 457mm (0.25” to 18”)

Packaging & Availability

Regional Availability
  • Africa
  • Asia Pacific (Excluding Russia)
  • Europe (Excluding Russia)
  • India
  • Latin America
  • Middle East
  • North America

Storage & Handling

Shelf Life
24 Months
Storage Conditions

Store material in original unopened packaging at temperatures between 4°C to 38°C (40°F to 100°F). Shelf life is 24 months when stored as recommended.