ASK A 3M EXPERT April, 2014 3M Loop Fastener SJ3571 Product Description 3M Hook and Loop Fasteners o er advanced closure alternatives to zippers, screws, snaps, hooks and more. They o er greater design exibility, faster product assembly, smoother and cleaner exterior surfaces and improved product performance in many applications. 3M hook and loop fasteners consist of hooks and loops which engage to form a quick fastening attachment. Simply pull the strips apart by hand to disengage. Product Features The woven nylon hook has exible, self-supporting inverted j-hooks protruding up from the backing with approximately 300 hooks per square inch (46 hooks/square cm). The woven nylon loop has thousands of soft, pliable napped loops protruding above the backing, providing for thousands of openings and closings (cycles). Both the hook and loop are preshrunk to insure maximum dimensional stability and atness. Standard colors available are black, white and beige, with several custom colors available with extended delivery times and additional costs. SJ3571 is coated with high performance acrylic pressure sensitive adhesive which has high temperature resistance and resistant to many environmental and chemical conditions. Commonly paired with 3M Hook Fastener SJ3572, this loop fastener can also engage with other 3M Hook Fasteners.3M Loop Fastener SJ3571 Technical Information Note The following technical information and data should be considered representative or typical only and should not be used for speci cation purposes. Typical Physical Properties Thickness Test Condition 3.2 mm 125 mil Unmated without liner 0.33 mm 140 mil Mated without liner Property: Thickness notes: Using 1/2 pressure foot with 34 gram weight Property Values Material Loop- Woven Nylon Backing High Performance Acrylic PSA Liner Polyole n with embossed 3M logo Liner Thickness 0.1 mm 4 mil Liner Color Clear Weight 0.062 g/cm 0.014 oz/in Typical Performance Characteristics Property Values Substrate Notes Dynamic Tensile 7.6 N/cm 11 lb/in Nylon Hook to Nylon Run at 12 inches per minute Loop Dynamic Shear 15.2 N/cm 22 lb/in Nylon Hook to Nylon Run at 12 inches per minute Loop Cleavage Strength 13.1 g/cm width 7.5 lb/in width Nylon Hook to Nylon Loop T-Peel Adhesion 3.5 g/cm width 2 lb/in width Nylon Hook to Nylon Run at 12 inches per minute Loop 90 Peel Adhesion 3.9 g/cm width 2.2 lb/in width Nylon Hook to Nylon Run at 12 inches per minute Loop Cycle Life 5000 Nylon Hook to Nylon Number of closures before losing 50% of original Loop strength