2-2-25-SJ4575

ASK A 3M EXPERT June, 2014 3M™ Dual Lock™ Low Pro le Reclosable Fastener SJ4570 Product Description 3M™ Dual Lock™ Reclosable Fasteners are positive locking, hidden fasteners designed for use in a variety of attachment solutions. They consist of continuous strips of polyole n stems with a mushroom shaped top protruding up from the backing. When snapped together the mushroom shaped caps interlock producing a strong reliable Fastener. 3M™ Dual Lock™ Reclosable Fastener SJ4570 Low Pro le is designed for indoor use and low to medium temperature performance. This product o ers temperature resistance up to 158°F and can be used with metals such as aluminum and stainless steel; as well as glass, many plastics (polypropylene, polyethylene, polycarbonate, ABS) powder coated paints and medium to low surface energy materials. The Dual Lock Low Pro le has one stem density of approximately 705 stems per square inch and they interlock to themselves. The low pro le products are not intended to mate to the standard size Dual Lock. There are a variety of pressure sensitive adhesives available with Dual Lock to cover most application needs. The pressure sensitive adhesive makes the Dual Lock easy to use, simply remove the liner, place the Dual Lock and apply rm consistent pressure to assure good contact with the substrate you are adhering. We also o er non-adhesive backed Dual Lock for applications where the PSA does not meet your needs. Product Features • Clear, low pro le, polyole n fastener is half the thickness of standard 3M™ Dual Lock™ Reclosable Fasteners and is self-mating • Interlocking mushroom-shaped heads provide strong, reliable and durable fastening that can be opened and closed multiple times • Low surface energy acrylic adhesive bonds well to a variety of substrates including metals, powder-coated paints and a broad range of plastics • Strong fastener secures with an audible snap, verifying closure • An alternative to screws and bolts, this hidden fastener provides a snug t and smooth aesthetic appearance • Features good temperature resistance of 158°F (70°C) • Best suited for indoor use 3M™ Dual Lock™ Low Pro le Reclosable Fastener SJ4570 General Information This product is half the thickness of standard 3M™ Dual Lock™ Reclosable Fasteners, providing a low pro le attachment. An alternative to screws and bolts, this hidden fastener provides a snug t and smooth aesthetic appearance. 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 Property Values Adhesive Color Clear Backing Color Clear Material Polypropylene Adhesive 300 LSE (Acrylic) Liner 86# Polycoated Kraft Liner Thickness 0.17 mm 6.5 mil Weight 0.044 g/cm² 0.012 oz/in² Thickness Test Condition 1.63 mm 64.5 mil Unmated 2.489 mm 98 mil Engaged Property: Thickness Typical Performance Characteristics Property Values Substrate Notes Service Temperature Range 29 to 70 °C -20 to 158 °F Dynamic Tensile (Disengage) 27.5 N/cm² 40 lb/in² Low Pro le to Low Pro le Dynamic Shear 28.2 N/cm² 41 lb/in² Low Pro le to Low Pro le Cleavage Strength 7.1 N/cm width 4 lb/in width Low Pro le to Low Pro le Rigid backed from Rigid backed T-Peel Adhesion 0.9 N/cm width 0.5 lb/in width Low Pro le to Low Pro le Flexible from Flexible 90° Peel Adhesion 2.9 N/cm width 1.7 lb/in width Low Pro le to Low Pro le Flexible from Rigid Table continued on next page 3M™ Dual Lock™ Low Pro le Reclosable Fastener SJ4570 Typical Performance Characteristics (continued) Property Cycle Life Values Substrate Notes 150 Low Pro le to Low Pro le Number of closures before losing 50% of original strength Design Considerations • As a general rule, four square inches of fastener area per pound of static tensile or shear load to be supported is suggested as a starting point for evaluation. More or less area may be needed depending on speci c conditions or end use applications. • Whenever possible design one side of the Dual Lock reclosable fasteners to be larger than the mating side. This will allow for variability or mismatch in Dual lock alignment positions, and ensure 100% fastening area contact. Another approach would be to design two rectangular shaped fastener pieces so that they can be engaged in a cross web/perpendicular pattern (crossed). • Dual Lock disengagement strength/performance is strongest in direct tensile. Peel/cleavage mode is where it is most easily removed. • Final product performance depends upon a combination of factors: the substrate and its surface characteristics, the fastener selected, the application method and conditions, the time and environmental conditions required for the application. Because these factors are unique to each application, the user must evaluate Dual Lock and do any testing required to determine Dual Lock’s suitability for the user’s desired end use. Family Group SJ4570 SJ4575 SJ4580 Thickness (mm) Test Condition: Unmated 1.63 1.63 Thickness (mm) Test Condition: Engaged 2.489 2.489 2.997 Material Polypropylene Polypropylene Polypropylene Adhesive 300 LSE (Acrylic) 300 LSE (Acrylic) High Temperature Acrylic Liner 86# Polycoated Kraft 86# Polycoated Kraft Red, non-silicone liner Liner Thickness (mm) 0.17 0.17 References 1. 3m.com Product Page Url: https://www.3m.com/3M/en_US/company-us/all-3m-products/~/3M-Dual-Lock-Low-Pro le-Reclosable-Fastener-SJ4570? N=5002385+3293242261&rt=rud 2. Safety Data Sheet Url: https://www.3m.com/3M/en_US/company-us/SDS-search/results/?gsaAction=msdsSRA&msdsLocale=en_US&co=ptn&q=SJ4570 ISO Statement This Industrial Adhesives and Tapes Division product was manufactured under a 3M quality system registered to ISO 9001 standards. 3M™ Dual Lock™ Low Pro le Reclosable Fastener SJ4570 Technical Information The technical information, recommendations and other statements contained in this document are based upon tests or experience that 3M believes are reliable, but the accuracy or completeness of such information is not guaranteed. Product Use Many factors beyond 3M’s control and uniquely within user’s knowledge and control can a ect the use and performance of a 3M product in a particular application. Given the variety of factors that can a ect the use and performance of a 3M product, user is solely responsible for evaluating the 3M product and determining whether it is t for a particular purpose and suitable for user’s method of application. Warranty, Limited Remedy, and Disclaimer Unless an additional warranty is speci cally stated on the applicable 3M product packaging or product literature, 3M warrants that each 3M product meets the applicable 3M product speci cation at the time 3M ships the product. 3M MAKES NO OTHER WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OR CONDITION OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR ANY IMPLIED WARRANTY OR CONDITION ARISING OUT OF A COURSE OF DEALING, CUSTOM OR USAGE OF TRADE. If the 3M product does not conform to this warranty, then the sole and exclusive remedy is, at 3M’s option, replacement of the 3M product or refund of the purchase price. Limitation of Liability Except where prohibited by law, 3M will not be liable for any loss or damage arising from the 3M product, whether direct, indirect, special, incidental or consequential, regardless of the legal theory asserted, including warranty, contract, negligence or strict liability. Industrial Adhesives and Tapes Division 3M Center St. Paul, MN 55144-1000 800-362-3550 www.3m.com Please recycle. © 3M 2018. All Rights Reserved. The brands listed above are trademarks of 3M.