• Description for 3M 442KW

    Double coated film tape features a thin polyester film carrier, with firm rubber adhesive 830

    *See Terms of Use Below

    Application Type Bond, Hold
    1 Part or 2 Part 1 Part
    Material Form Double-Coated Tape
    Substrate Fabrics, Glass, Metal, ABS, Polycarbonate, Polyester, Polypropylene, Rubber, Stainless Steel, Paper, Al foil, Plastics
    Industry Splicing of films
    Manufacturer 3M
    Chemistry Natural Rubber, Polyester
    Cure Method Pressure Sensitive
    Color White
    Relative Solvent Resistance Chemical Resistance: Good solvent resistance
    High Temperature Resistance (°C) 66, 82
  • Technical Data for 3M 442KW

    Cure Specs
    Application Temperature (°F) 70 to 100
    Bond Strength
    General Bond Strength (psi) 70 (Oz./in.), 53 (Oz/in), 56 (Oz/in), 70 (Oz/in) Test Method
    Material Resistance
    High Temperature Resistance (°C) 66, 82
    Flexibility Firm
    Business Information
    Shelf Life Details Store in original cartons at 70°F (21°C) and 50% relative humidity.;To obtain best performance, use 3M™ Double Coated Polyester Tapes 442F and 442DL within 18 months from date of manufacture, and 3M™ Double Coated Polyester Tapes 442KW and 442W within 12 months from date of manufacture. Shelf life may be extended by keeping tape poly bagged and refrigerated at or below 50°F (10°C)..
    Shelf Life Temperature (°F) 70
    Shelf Life Type from date of manufacture
    Shelf Life (mon) 12
  • Best Practices for 3M 442KW

    *See Terms of Use Below

    1. Surface Preparation

      To obtain optimum adhesion, all substrate surfaces must be clean and dry. A typical cleaning solvent is an isopropyl alcohol/water solution with a mixture ratio of 50:50 (rubbing alcohol). Be sure to follow solvent manufacturer’s precautions and directions for use when using solvents.

    2. Application

      Bond strength is dependent upon the amount of adhesive-to-surface contact developed. Firm application pressure helps develop better adhesive contact and improves bond strength.

      Ideal tape application temperature range is 70°F to 100°F (21°C to 38°C). Initial tape application to surfaces at temperatures below 50°F (10°C) is not recommended because the adhesive becomes too firm to adhere readily. However, once properly applied, low temperature holding is generally satisfactory.

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General Bond Strength Test Methods
General Bond Strength Substrate Test Time Test Temperature Test Method
70 (Oz./in.) Al foil 4,320 min 25°C ASTM D3330 - 180 degree
53 (Oz/in) Stainless Steel 15 min 25°C ASTM D3330 - 90 degree
56 (Oz/in) Stainless Steel 4,320 min 25°C ASTM D3330 - 90 degree
70 (Oz/in) Stainless Steel 4,320 min 70°C ASTM D3330 - 90 degree