Adhesion: 96 ounces per inch (to stainless steel test panel)
3M Scotch SJ4570 Dual Lock Low Profile Reclosable Fasteners can replace conventional fasteners such as screws, clips, rivets, snaps, hook and loop and bolts in many applications where access or repositioning is needed. Amazingly thin and reclosable, yet strong, 3M Dual Lock Low Profile fasteners are thinner and more flexible than other reclosable fasteners. SJ4570 is backed with 3M 300 LSE Laminating adhesive, giving it an excellent bond to many substrates including polypropylene, polyethylene, metal, finished wood and many others. Used in POP (point of purchase), trade show exhibition and electronics, Dual Lock low profile reclosable fasteners attach ceiling tiles, carpet, seat cushions, trade show graphics, access panels, wall panels and small electronic devices. They are also great for attaching E-ZPass tags to car windshields. 3M typically recommends 4 square inches of fastener per pound of static load for their low profile dual lock products. The 10 foot sizes are cut from longer source rolls and come in a zip-lock bag (only the 5/8 inch x 10 foot size of SJ4570 which is specifically labeled as *retail-packaged comes in a package suitable for resale).
Dual lock only has one type of side; unlike Velcro where there is a separate hook and a loop side; so rolls are typically cut in half and then mated or connected so a 10 foot roll would be used as two 5-foot strips. Low profile dual lock has about 700 stems per square inch, but the stems are much shorter than standard dual lock which has either 170, 250 or 400 stems per square inch. They let you make a much thinner joint (an object being mounted would not stick out as far), but it doesn't have the holding power of standard dual lock. However for smaller, lightweight items it is ideal.
1 in. x 10 ft.
Most Helpful Customer Reviews
The fastener part has super-strong hold. As far as the adhesive part, that seems very strong, too, but I used it in a sew-on application, so I can't address that. It is indeed "low profile", but when they say "half the thickness of other fasteners" they mean other industrial strength fasteners. It's about the same thickness as the regular "fuzzy" hook and look fastener. Also, be aware that the tape has only one surface, which acts as both hook and loop. Therefore, 10 feet of tape provides only 5 feet of fastener.
This Dual Lock creates a great bond for even heavy things. I was using it on my guitar pedalboard with decent success. One warning though: the little mushroom / fingers are VERY easily bent just by pressing on them with your finger (for example: trying to stick down the adhesive to a surface). They deform and don't move back into place. If your application isn't semi-permanent, you are better off with another type of (more durable) Dual Lock like the black TB3870 250/250.
Clear base to this fastening method. When you make envelopes or boxes / little paper purses and so forth, you don't want gaudy Velcro as an enclosure. This is the answer! You don't need two different pieces either. In other words, with regular Velcro, you have the hook part and the loop part. With this, it hooks to itself! If you take two pieces of this very thin, but sturdy fastener material, press them together and wallllaaaaaa.... they lock. You only need the one roll. I love this material and have shared some with other crafters as a little goes a long way! This is the answer to inconspicuous enclosures for our craft projects!
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