Brand Bumpon Application Type Bumpons 1 Part or 2 Part 1 Part Material Form Strip Substrate Acrylic, Glass, Bare Metals, ABS, Polycarbonate, Sealed Wood, Polystyrene, Rigid Vinyl, Painted Metals Manufacturer 3M Chemistry Acrylic PSA Cure Method Pressure-Sensitive Color Black, Beige, White Chemical Resistance Chemical High Temperature Resistance (°C) 93 Low Temperature Resistance (°C) -29 Key Specifications CID (United States Government Commercial Item Description): A-A-55126A: Type II, Class 1, Mil-Spec (United States Military Standard): F-21840: MIL-F-21840, Type IA, II and III Class 3; CID A-A-55126A, Type II, Class 1
Technical Data for 3M SJ3572
1 Part or 2 Part
- 1 Part or 2 Part - 1 Part
- Acrylic - Acrylic PSA
- Pressure Sensitive (min) - Pressure-Sensitive
- Brown - Beige
- CID (United States Government Commercial Item Description): A-A-55126A: Type II, Class 1
- Mil-Spec (United States Military Standard): F-21840: Type IA, II and III Class 3 - MIL-F-21840, Type IA, II and III Class 3; CID A-A-55126A, Type II, Class 1
Peel Strength (piw) 1.8 (Pounds/inch), 1.3 (Pounds/inch), 2.6 (lb./inch) Test Method Shear Strength (psi) 4.8 (lbsf/sq inch), 10 (pounds force/square inch), 2.2 (#/in2), 2.2 (#/in2), 2.2 (#/in2) Test Method Tensile Strength (psi) 2, 2, 2, <1, 8, 8, 8 Test Method
Chemical Resistance Chemical Environmental Resistance Environmental resistance High Temperature Resistance (°C) 93 Low Temperature Resistance (°C) -29
Shelf Life Details Shelf Life when stored in original packaging at 72°F (22°C) and 50% RH Shelf Life Temperature (°F) 72 Shelf Life Type From date of manufacture Shelf Life (mon) 24
Best Practices for 3M SJ3572
Highly textured surfaces may reduce the ultimate adhesion levels and care should be given to minimize the surface texture or roughness. Adhesive backed fasteners should be applied to surfaces that are clean, dry and free of oil, grease, dust, mold release agents or surface contaminants that could reduce the adhesion. It is recommended to remove any surface contaminants that may reduce adhesion by using a method suited for the type and quantity of surface contaminants present. Isopropal alcohol is a good general use solvent for cleaning contaminants from surfaces for example.
In exceptional cases, especially when removing silicone mold release agents or on rough, porous surfaces, it may be necessary to lightly abrade the surface, use an adhesion promoter, or surface sealer to optimize the adhesive bond to the substrate. The selection of abrasion, priming or sealing methods will depend upon the substrates and the environmental conditions the product will be exposed to during use.
Attachment Procedure: To obtain optimum bond to any surface, both the fasteners and the target surfaces should have equilibrated for a minimum of one hour at temperatures between 68°F (20°C) to 100°F (38°C) before application. The liner protecting the adhesive is removed and preferably without touching the adhesive, the fastener is applied to the substrate. Exposure of the adhesive to ambient conditions without the protective liner, before applying to the surface, should be minimized as initial adhesive tack may decrease. Flexible materials should be lying on a hard flat surface so as to permit uniform adhesive contact with the surface. Use of a rubber hand roller, press platen or similar device is recommended to ensure full adhesive contact or wetout with the substrate surface. Approximately 4.5 pounds of force per square inch, (310 grams per square centimeter) is recommended to increase adhesive contact, improving bond strength. For all adhesive applications, it is important to ensure that the edges are rolled down to reduce the chance of edge lifting.
Plain backed: The plain backed 3M hook and loop fasteners are most commonly sewn into their applications. Liquid or hot melt adhesives and staples are other forms of attachment that can be utilized.
Sewing: Although the selvedge edge was initially developed for stitching on, customers often find that they get better anchorage when stitching through the 3M hook and loop portions of the fastener – this may be application dependant. The type of thread and stitch type is also best determined based on individual application, however, the fastener should be stitched on all edges for the best seam strength. Typically, special machine adjustments are not necessary when using our 3M hook and loop fasteners.
Comparable Materials for 3M SJ3572
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Peel Strength Test Methods
|Peel Strength||Type||Substrate||Test Method|
|1.8 (Pounds/inch)||90° Peel Strenth||Flexible to Rigid||Flexible to Rigid, width|
|1.3 (Pounds/inch)||T-Peel Strength||Flexible to Flexible||width|
|2.6 (lb./inch)||Dynamic T-Peel Strength||ASTM D5170, width|
Tensile Strength Test Methods
|Tensile Strength||Type||Test Time||Test Temperature||Test Humidity||Test Method|
|2 psi||Static Tensile Strength||100 min||70°C||Holds 2.2#/in2 (155 grams/cm2) for indicated time and temperature|
|2 psi||Static Tensile Strength||100 min||93°C||Holds 2.2#/in2 (155 grams/cm2) for indicated time and temperature|
|2 psi||Static Tensile Strength||100 min||38°C||100 %||Holds 2.2#/in2 (155 grams/cm2) for indicated time and temperature|
|<1 psi||Dynamic Tensile Strength||Engagement Stength|
|8 psi||Dynamic Tensile Strength||Disengagement 3M™ Scotchmate™ Reclosable Fasteners SJ3571/72 and 3M™ Dual Lock™ SJ3560 are engaged with firm pressure and disengaged, peeled or cleaved at the rate of 12 inches (305 mm) per minute.|
|8 psi||Dynamic Tensile Strength||closure|
|8 psi||Dynamic Tensile Strength|
Shear Strength Test Methods
|Shear Strength||Type||Test Time||Test Temperature||Test Humidity||Test Method|
|4.8 (lbsf/sq inch)||Dynamic shear strength||(1" x 1" overlap) M™ Scotchmate™ Reclosable Fasteners SJ3571/72 and 3M™ Dual Lock™ SJ3560 are engaged with firm ressure and disengaged, peeled or cleaved at the rate of 12 inches (305 mm) per minute.|
|10 (pounds force/square inch)||Dynamic shear strength||ASTM D5169|
|2.2 (#/in2)||Static Shear Strength||600,000 sec||70°C||Holds 2.2#/in2 (155 grams/cm2) for indicated time and temperature|
|2.2 (#/in2)||Static Shear Strength||600,000 sec||93°C||Holds 2.2#/in2 (155 grams/cm2) for indicated time and temperature|
|2.2 (#/in2)||Static Shear Strength||600,000 sec||38°C||100 %||Holds 2.2#/in2 (155 grams/cm2) for indicated time and temperature|