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
- Adhesive - Bond, Hold
1 Part or 2 Part
- 1 Part or 2 Part - 1 Part
- Tape - Double-Coated Tape
- Industrial - Films Tapes, Foils, Polishing pads
- Splicing - Splicing of films
- Other - Natural Rubber, Polyester
- Dispenser - Lamination equipment
- Pressure Sensitive (min) - Pressure Sensitive
Application Temperature (°F) 70 to 100
General Bond Strength (psi) 70 (Oz./in.), 53 (Oz/in), 56 (Oz/in), 70 (Oz/in) Test Method
High Temperature Resistance (°C) 66, 82
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
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.
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|