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Description for 3M Dual Lock Reclosable Fastener SJ3540
Positive locking, hidden fasteners designed for use in a variety of attachment solutions.Brand Bumpon Application Type Bond 1 Part or 2 Part 1-Part Material Form Bumpons Substrate Fabric, Paper, Polyethylene, Rigid Vinyl, Polystyrene, Glass, Bare and Painted Metal, Plastics, Polycarbonate, Polypropylene, Sealed Wood, Low surface energy, Cardboard Industry Attaching accessories to computer monitors, Window valences, General purpose Manufacturer 3M Chemistry Polypropylene, Synthetic Rubber, Acrylic, Polyethylene, Rubber based PSA foam backing, Non-woven Cure Method Pressure-Sensitive Color Black High Temperature Resistance (°C) 60 Can Be Used In Conjunction With These Materials Liquid, Epoxies, Hot melt, Sealants -
Technical Data for 3M Dual Lock Reclosable Fastener SJ3540
Overview
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Application Type
- Adhesive - Bond
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1 Part or 2 Part
- 1-Part
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Material Form
- Bumpons
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Substrate
- Low Surface Energy
- Glass
- Metal - Bare and Painted Metal
- Plastic - Plastics
- Polyethylene (LDPE, HDPE) - Polyethylene
- Vinyl - Rigid Vinyl
- Polystyrene (PS) - Polystyrene
- Polycarbonate
- Polypropylene
- Wood - Sealed Wood
- Fabric
- Paper - Cardboard
- Other - Rigid Substrates, Powder Coated Paints
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Industry
- Storage & Graphics - Attaching accessories to computer monitors
- Industrial - Decorative trim attachment
- General Purpose
- Construction Window - Window valences
- Furniture / Wood-Working - Kick plates on office partitions
- Other - Indoor applications, Access panels on exercise equipment, Interior signage, Decorative trim attachment, Use in a variety of attachment solutions
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Chemistry
- Synthetic Rubber
- Acrylic
- Other - Polypropylene, Polyethylene, Rubber based PSA foam backing, Non-woven
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Application Method
- Contact
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Cure Method
- Pressure Sensitive (min) - Pressure-Sensitive
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Color
- Black
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Can Be Used In Conjunction With These Materials
- Epoxies
- Hot melts - Hot melt
- Other - Liquid, Sealants
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Brand
- Bumpon
Specifications
Bond Strength
General Bond Strength (psi) Maximum Test Method Peel Strength (piw) 6.1 (Pounds/inch), 4.1 (Pounds/inch), 1.2 N/cm width, 2.5 N/cm width, 3.3 N/cm width, 2.6 N/cm width, 2.6 N/cm width, 5.4 N/cm width, 8.1 N/cm width, 8.1 N/cm width Test Method Shear Strength (psi) 124 (lbsF/sq inch), 77.5 (grams/cm2), 77.5 (grams/cm2), 77.5 (grams/cm2), 77.5 (grams/cm2), 7, 10, 10, 28 Test Method Cleavage Strength (psi) 14 (Pounds/inch), 21 N/cm width, 35 N/cm width, 42 N/cm width, 56 N/cm width Test Method Tensile Strength (psi) 77.5 (grams/cm2), 77.5 (grams/cm2), 77.5 (grams/cm2), 77.5 (grams/cm2), <1, 35, 6, 10, 10, 15, 13, 13, 20, 20, 29 Test Method Material Resistance
High Temperature Resistance (°C) 60 Business Information
Shelf Life Details Shelf life is from date of manufacture when stored in original packaging at 72°F (22°C) and 50% relative humidity., To obtain best performance, use this product within 18 months from date of manufacture. Shelf Life Temperature (°F) 72 Shelf Life Type From date of manufacture, From date of manufacture Shelf Life (mon) 18, <18 Not Good For
Don't Use With Type 170 to 170, Type 400 to 400 -
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Best Practices for 3M Dual Lock Reclosable Fastener SJ3540
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Surface Preparation
Generally 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 surface should be cleaned to remove any surface contaminants with an appropriate cleaning method for the customer’s substrate, type and quantity of surface contaminants that need to be removed.
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Application
Ease of Assembly: Dual Lock fasteners can be used to attach components before they enter the final assembly plant, reducing the number of parts and the assembly time. No tools are required.
Attachment Methods: The wide varieties of Dual Lock fasteners allow a design engineer exibility to be able use and attach Dual Lock to just about any substrate or application. Peel and stick pressure sensitive adhesive backed is quick and easy yet strong and secure. Non-woven backed can be used with a variety of adhesive choices such as hot melt, liquid, epoxies, sealants, etc. We have parts that can be attached with a screw or rivet
rigid and plain backed for developing your own special device.
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Curing
The pressure-sensitive adhesive bonds to the substrate on contact and parts can be handled immediately. Adhesive bond strength increases with time, pressure and temperature. A minimum of one hour dwell is recommended before applying a load or disengaging assembled parts. Recommended time to achieve maximum bond strength is 24 hours.
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Comparable Materials for 3M Dual Lock Reclosable Fastener SJ3540
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Shear Strength Test Methods
Shear Strength | Type | Substrate | Test Time | Test Temperature | Test Humidity | Test Method |
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124 (lbsF/sq inch) | Dynamic shear strength | Rigid to Rigid Substrates | 22°C | 50 % | (1" x 1" overlap), Dual Lock SJ3540, SJ3541, SJ3542 and Scotchmate SJ3527 were engaged with firm pressure and disengaged, at the rate of 12 inches (305 mm) per minute. | |
77.5 (grams/cm2) | Static shear strength | Rigid to Rigid Substrates | 600,000 sec | 38°C | 100 % | Holds minimum 1.1 #/in2 for indicated time and temperature |
77.5 (grams/cm2) | Static shear strength | Rigid to Rigid Substrates | 600,000 sec | 49°C | 50 % | Holds minimum 1.1 #/in2 for indicated time and temperature |
77.5 (grams/cm2) | Static shear strength | Rigid to Rigid Substrates | 600,000 sec | 60°C | 50 % | Holds minimum 1.1 #/in2 for indicated time and temperature |
77.5 (grams/cm2) | Static shear strength | Rigid to Rigid Substrates | 60,000 sec | 70°C | 50 % | Holds minimum 1.1 #/in2 for indicated time and temperature |
7 psi | Dynamic Shear | Type 170 to 250 | ||||
10 psi | Dynamic Shear | Type 170 to 400 | ||||
10 psi | Dynamic Shear | Type 250 to 250 | ||||
28 psi | Dynamic Shear | Type 250 to 400 |
Tensile Strength Test Methods
Tensile Strength | Type | Substrate | Test Time | Test Temperature | Test Humidity | Test Method |
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77.5 (grams/cm2) | Static Tensile Strength | Rigid to Rigid Substrates | 20,000 min | 100°C | 100 % | Holds minimum 1.1 #/in2 for indicated time and temperature |
77.5 (grams/cm2) | Static Tensile Strength | Rigid to Rigid Substrates | 20,000 min | 120°C | 50 % | Holds minimum 1.1 #/in2 for indicated time and temperature |
77.5 (grams/cm2) | Static Tensile Strength | Rigid to Rigid Substrates | 10,000 min | 140°C | 50 % | Holds minimum 1.1 #/in2 for indicated time and temperature |
77.5 (grams/cm2) | Static Tensile Strength | Rigid to Rigid Substrates | 1,000 min | 158°C | 50 % | Holds minimum 1.1 #/in2 for indicated time and temperature |
<1 psi | Dynamic Tensile Strength | Rigid to Rigid Substrates | 22°C | 50 % | Engagement Strength | |
35 psi | Dynamic Tensile Strength | Rigid to Rigid Substrates | 22°C | 50 % | Disengagement, Dual Lock SJ3540, SJ3541, SJ3542 and Scotchmate SJ3527 were engaged with firm pressure and disengaged, at the rate of 12 inches (305 mm) per minute. | |
6 psi | Dynamic Tensile (Engage) | Type 170 to 250 | ||||
10 psi | Dynamic Tensile (Engage) | Type 170 to 400 | ||||
10 psi | Dynamic Tensile (Engage) | Type 250 to 250 | ||||
15 psi | Dynamic Tensile (Engage) | Type 250 to 400 | ||||
13 psi | Dynamic Tensile (Engage) | Low Profile to Low Profile | ||||
13 psi | Dynamic Tensile (Disengage) | Type 170 to 250 | ||||
20 psi | Dynamic Tensile (Disengage) | Type 170 to 400 | ||||
20 psi | Dynamic Tensile (Disengage) | Type 250 to 250 | ||||
29 psi | Dynamic Tensile (Disengage) | Type 250 to 400 |
Peel Strength Test Methods
Peel Strength | Type | Substrate | Test Temperature | Test Humidity | Test Method |
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6.1 (Pounds/inch) | 90° Peel Strenth | Flexible to Rigid | 22°C | 50 % | Dual Lock SJ3540, SJ3541, SJ3542 and Scotchmate SJ3527 were engaged with firm pressure and disengaged, at the rate of 12 inches (305 mm) per minute, width |
4.1 (Pounds/inch) | T-Peel Strength | Flexible to Flexible | 22°C | 50 % | Dual Lock SJ3540, SJ3541, SJ3542 and Scotchmate SJ3527 were engaged with firm pressure and disengaged, at the rate of 12 inches (305 mm) per minute, width |
1.2 N/cm width | T-Peel Adhesion | Type 170 to 250 | Flexible from Flexible | ||
2.5 N/cm width | T-Peel Adhesion | Type 170 to 400 | Flexible from Flexible | ||
3.3 N/cm width | T-Peel Adhesion | Type 250 to 250 | Flexible from Flexible | ||
2.6 N/cm width | T-Peel Adhesion | Type 250 to 400 | Flexible from Flexible | ||
2.6 N/cm width | 90° Peel Adhesion | Type 170 to 250 | Flexible from Rigid | ||
5.4 N/cm width | 90° Peel Adhesion | Type 170 to 400 | Flexible from Rigid | ||
8.1 N/cm width | 90° Peel Adhesion | Type 250 to 250 | Flexible from Rigid | ||
8.1 N/cm width | 90° Peel Adhesion | Type 250 to 400 | Flexible from Rigid |
Cleavage Strength Test Methods
Cleavage Strength | Substrate | Test Temperature | Test Humidity | Test Method |
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14 (Pounds/inch) | Rigid to Rigid Substrates | 22°C | 1 % | Dual Lock SJ3540, SJ3541, SJ3542 and Scotchmate SJ3527 were engaged with firm pressure and disengaged, at the rate of 12 inches (305 mm) per minute, width |
21 N/cm width | Type 170 to 250 | Rigid backed from Rigid backed | ||
35 N/cm width | Type 170 to 400 | Rigid backed from Rigid backed | ||
42 N/cm width | Type 250 to 250 | Rigid backed from Rigid backed | ||
56 N/cm width | Type 250 to 400 | Rigid backed from Rigid backed |
General Bond Strength Test Methods
General Bond Strength | Cure Time |
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Maximum | 1,440 min |

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