• Description for 3M SJ4570

    It can replace conventional fasteners, such as screws, clips, rivets, snaps, hook and loop and bolts in many applications where access or repositioning is needed.

    *See Terms of Use Below

    Application Type Bond
    1 Part or 2 Part 1 Part
    Material Form Strips
    Substrate Acrylic, Aluminum, Structural Composites, Polystyrene, Rigid Vinyl, Glass, Fiberglass, Bare Metals, Many Plastics, Polycarbonate, Polypropylene, Stainless Steel, Sealed Wood, Painted Metals, ABS, Metal
    Industry Small electronic devices, Electronics
    Manufacturer 3M
    Chemistry 300 LSE (Acrylic), Polypropylene
    Cure Method Pressure Sensitive
    Color Clear
    High Temperature Resistance (°C) <70
    Low Temperature Resistance (°C) -29
  • Technical Data for 3M SJ4570

    Overview
    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 1 Part
    • Material Form
      • Strip - Strips
    • Substrate
    • Industry
    • Chemistry
      • Acrylic - 300 LSE (Acrylic)
      • Other - Polypropylene
    • Application Method
      • Contact
    • Cure Method
      • Pressure Sensitive (min) - Pressure Sensitive
    • Color
      • Clear / Transparent - Clear
    Specifications
    Bond Strength
    Peel Strength (piw) 6.0 (Lbs/inch), 8.0 (Lbs/inch), 7.0 (Lbs/inch), 5.0 (Lbs/inch), 3.5 (Lbs/inch), 7.0 (Lbs/inch), 5.0 (Lbs/inch), 6.0 (Lbs/inch), 6.0 (Lbs/inch), 8.0 (Lbs/inch), 5.0 (Lbs/inch), 6.0 (Lbs/inch), 1.2 (Lbs/inch) Test Method
    Shear Strength (psi) 32, 2, 2, 2, 1, 1, 1 Test Method
    Tensile Strength (psi) 2, 2, 2, 1, 1, 1, 26, 42 Test Method
    Material Resistance
    High Temperature Resistance (°C) <70
    Low Temperature Resistance (°C) -29
    Hardness
    Flexibility Flexible
    Business Information
    Shelf Life Details Storage: Store in original package at 72°F (22°C) and 50% relative humidity.;If stored under proper conditions, product retains its performance and properties for two years from date of manufacture.
    Shelf Life Temperature (°F) 72
    Shelf Life Type From date of manufacture.
    Shelf Life (mon) 24
  • Best Practices for 3M SJ4570

    *See Terms of Use Below

    1. Design

      As a general rule, four square inches of fastener area per pound (57.3 square centimeters per kilogram) of static load to be supported is suggested as a starting point for evaluation. More or less area may be needed depending on specific conditions or end use applications

    2. Surface Preparation

      These adhesive backed fasteners should be applied to surfaces that are smooth, dry and free of oils, mold release agents or other surface contaminants.

      The substrate should be cleaned with an appropriate cleaning method for the customers substrate(s) and surface contaminant(s) and amount that need to be removed.

      NOTE: Be sure to follow the manufacturer’s precautions and directions for use when using solvents, or other cleaning method

    3. Application

      There are typically 6 different methods for attaching Dual Lock low profile reclosable fasteners to various surfaces. The most important technique for Dual Lock low profile reclosable fastener SJ4570 is summarized below. For complete details on techniques and options for attaching 3M™ Scotchmate™ or 3M™ Dual Lock™ Reclosable Fasteners please see the technical bulletin “Attachment of 3M™ Scotchmate™ and 3M™ Dual Lock™ Reclosable Fasteners.”

      Pressure Sensitive Adhesive attachment: The fasteners and substrate surfaces should have equilibrated for a minimum of 1 hour at temperatures of 68°F (20°C) or greater before application.

      The liner is removed and without touching the adhesive, the fastener is applied to the surface using firm roller pressure to help ensure complete adhesive contact to the substrate. The pressure-sensitive adhesive bonds on contact and parts can be handled immediately. Adhesive bond strength increases with time, pressure and temperature.

    4. Curing

      A minimum of twenty four (24) hours dwell is recommended before applying a load or disengaging. Recommended time to achieve maximum bond strength is 72 hours (3 days)

    5. Clean-Up

      The substrate should be cleaned with an appropriate cleaning method for the customers substrate(s) and surface contaminant(s) and amount that need to be removed.

      NOTE: Be sure to follow the manufacturer’s precautions and directions for use when using solvents, or other cleaning method.

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    *See Terms of Use Below

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Shear Strength Test Methods
Shear Strength Type Substrate Test Time Test Temperature Test Humidity Test Method
32 psi Dynamic shear strength 1" x 1" overlap
2 psi Static shear strength Stainless Steel 600,000 sec -29°C
2 psi Static shear strength Stainless Steel 600,000 sec 22°C 50 %
2 psi Static shear strength Stainless Steel 70°C
1 psi Static shear strength Stainless Steel 600,000 sec -29°C 50 %
1 psi Static shear strength Stainless Steel 600,000 sec 22°C
1 psi Static shear strength Stainless Steel 600,000 sec 70°C
Tensile Strength Test Methods
Tensile Strength Type Substrate Test Time Test Temperature Test Humidity Test Method
2 psi Static Tensile Strength Aluminum 10,000 min -29°C
2 psi Static Tensile Strength Aluminum 10,000 min 22°C 50 %
2 psi Static Tensile Strength Aluminum 70°C
1 psi Static Tensile Strength Aluminum 10,000 min -29°C 50 %
1 psi Static Tensile Strength Aluminum 10,000 min 22°C
1 psi Static Tensile Strength Aluminum 10,000 min 70°C
26 psi Dynamic Tensile Strength Engagement
42 psi Dynamic Tensile Strength Disengagement
Peel Strength Test Methods
Peel Strength Type Substrate Test Time Test Temperature Test Humidity Test Method
6.0 (Lbs/inch) 90° Peel Strength Stainless Steel 1.00 min Peeled at the rate of 12 inches (305 mm) per minute., width, initial (1 minute dwell)
8.0 (Lbs/inch) 90° Peel Strength Stainless Steel 10,080 min 22°C 50 % Peeled at the rate of 12 inches (305 mm) per minute., width, after 1 week at 72°F/50% relative humidity
7.0 (Lbs/inch) 90° Peel Strength Stainless Steel 10,080 min 70°C Peeled at the rate of 12 inches (305 mm) per minute., width, after 1 week at 158°F
5.0 (Lbs/inch) 90° Peel Strength Polypropylene 10,080 min 37°C 100 % Peeled at the rate of 12 inches (305 mm) per minute., width, after 1 week at 100°F/100% relative humidity
3.5 (Lbs/inch) 90° Peel Strength Polypropylene 1.00 min Peeled at the rate of 12 inches (305 mm) per minute., width, initial (1 minute dwell)
7.0 (Lbs/inch) 90° Peel Strength Polypropylene 10,080 min 22°C 50 % Peeled at the rate of 12 inches (305 mm) per minute., width, after 1 week at 72°F/50% relative humidity
5.0 (Lbs/inch) 90° Peel Strength ABS 10,080 min 70°C Peeled at the rate of 12 inches (305 mm) per minute., width, after 1 week at 158°F
6.0 (Lbs/inch) 90° Peel Strength ABS 10,080 min 37°C 100 % Peeled at the rate of 12 inches (305 mm) per minute., width, after 1 week at 100°F/100% relative humidity
6.0 (Lbs/inch) 90° Peel Strength ABS 1.00 min Peeled at the rate of 12 inches (305 mm) per minute., width, initial (1 minute dwell)
8.0 (Lbs/inch) 90° Peel Strength 22°C 50 % Peeled at the rate of 12 inches (305 mm) per minute., Width, after 1 week at 72°F/50% relative humidity
5.0 (Lbs/inch) 90° Peel Strength 10,080 min 70°C Peeled at the rate of 12 inches (305 mm) per minute., Width, after 1 week at 158°F
6.0 (Lbs/inch) 90° Peel Strength 10,080 min 38°C 100 % Peeled at the rate of 12 inches (305 mm) per minute., Width, after 1 week at 100°F/100% relative humidity
1.2 (Lbs/inch) T-Peel Strength 90° Angle, width
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