3 Scotchmate Reclosable Fasteners SJ3526N and SJ3527N Family Nylon Hook and Loop Product Information June, 2006 3M Scotchmate Reclosable Fasteners offer closure alternatives to zippers, screws, snaps, Product Description hooks, bolts and more. They offer greater design flexibility, faster product assembly, smoother and cleaner exterior surfaces and improved product performance in many applications. The hook and loop fasteners consist of two strips of nylon fabric which engage to form a quick fastening attachment. Simply pull the strips apart by hand to disengage. The woven hook is covered with flexible J shaped hooks, about 300 hooks per square inch (46/sq. cm.) protruding up from a woven backing. The woven loop backing is covered with thousands of soft, pliable napped loops, providing for thousands of openings and closings (cycles). The hook and loop are preshrunk to insure maximum dimensional stability and flatness. These Scotchmate reclosable hook and loop fasteners are coated on the backside with a firm synthetic rubber pressure sensitive adhesive designed to function for indoor applications. This adhesive is especially suited for attachment to low surface energy substrates such as polyethylene, polypropylene, etc. The hook product is available with a marked product splice making splice identification easier, allowing splice removal if desired. The product number is SJ3526NFSR. These products are also available with a brown, 83 pound polykraft paper liner. The paper liner allows easier diecutting of pieces. The hook is available as SJ3526NP and the loop as SJ3527NP. When shorter lengths are desired for evaulation, prototypes or small jobs a mini-pack containing a 4.9 yards (4.5 meters) roll of each SJ3526N (hook) and SJ3527N (loop) is available as a single package, MP3526N/27N. Note: The following technical information and data should be considered representative Product Construction or typical only and should not be used for specification purposes. Fastener Products 3M Scotchmate Reclosable Fasteners Hook SJ3526N MP3526N SJ3526NP Loop SJ3527N MP3527N SJ3527NP Hook SJ3526NFSR Material of Construction Hook nylon 6 Loop nylon 6,6 Backing nylon 6 (a) Adhesive Transparent (b) Standard Colors Black, White, Beige (c) Thickness max. unmated Hook 3/32 (2.4 mm) Loop 4/32 (3.2 mm) (d) Selvedge Edge 3/32 (2.4 mm) In. (mm) 1/32 (0.8 mm) 4/32 (3.2 mm) for 4 wide 2 2 Weight: oz/in (g/cm ) without liner 2 2 Hook 0.013 oz/in (0.058 g/cm ) 2 2 Loop 0.015 oz/in (0.063 g/cm ) Liner White 3.0 mil polyethylene Brown 83 polykraft liner film with a silicone release with a silicone release coating and coating. No printing. 3M Scotchmate printed in red. a) The adhesive may produce a yellow tint to some light colored hook and loop products or adherends. b) Other fastener colors are available as special orders. 3M recommends the user to evaluate a color sample to see if it meets their color requirements. See your 3M authorized distributor or 3M representative for a color selection guide, minimum requirements and lead times. c) Thickness was measured using a 1/2 pressure foot supporting a 34 gram weight. Actual thickness depends upon the amount of compressional load on the pieces. d) See table on page 5 for selvedge edge and extended liner configurations. 3M Scotchmate Reclosable Fasteners SJ3526N and SJ3527N Family Nylon Hook and Loop Note: The following information is not product release requirements, nor product specifications. Rather Typical System this data represent typical performance using standard test methods. This is intended for use as a Performance guide to assist in selection of 3M Scotchmate Reclosable Fasteners for further evaluation. Characteristics Customer specifications should not be based solely on the data presented in this document. Unless stated, typical system performance characteristics were measured under controlled laboratory conditions of 72F (22C) and 50% relative humidity. The user should evaluate products in the actual application to ensure suitable performance for the intended use. (a) System Performance 3M Scotchmate Reclosable Fasteners SJ3526N Hook SJ3527N Loop engaged to engaged to (b) SJ3527N Loop Dual Lock SJ3540 2 TENSILE (Rigid to Rigid Adherends) lbs /sq inch (Newtons/cm ): F Dynamic Tensile Engagement Strength < 1.0 (0.69) < 1.0 (0.69) (c) Dynamic Tensile Disengagement 13.5 (9.3) 50.5 (34.8) 2 2 Static Tensile Holding Power Holds 1.1 /in (77.5 grams/cm ) for indicated time and temperature 100F 7,300 minutes 8,500 minutes 120F 1,000 minutes 2,800 minutes 158F 300 minutes 200 minutes 100F/100% RH 4,400 minutes 5,800 minutes 2 SHEAR (Rigid to Rigid Adherends) lbs /sq inch (Newtons/cm ): F (c) Dynamic Shear (1 x 1 overlap) 24.5 (16.9) 93.2 (64.3) 2 2 Static Shear Holding Power Holds 1.1 /in (77.5 grams/cm ) for indicated time and temperature 100F 10,000 minutes 10,000 minutes 120F 1,000 minutes 4,300 minutes 158F 400 minutes 400 minutes 100F/100% RH 10,000 minutes 10,000 minutes (c) INITIAL PEEL AND CLEAVAGE Pounds/inch width (grams/cm width) T Peel Strength (Flexible to Flexible) Ave 1.7 (300) 6.0 (1,070) 90 Peel Strength (Flexible to Rigid) Ave 1.5 (270) 4.9 (880) Cleavage Peel Strength (Rigid to Rigid) 7.9 (1,400) 31 (5,500) (d) ENGAGED THICKNESS (Nominal without liner) Inches (cm) 0.14 (0.36) 0.20 (0.51) (e) CLOSURE CYCLE LIFE 5,000 50 SHELF LIFE Eighteen months from date of manufacturing when stored in original packaging at 72F (21C) and 50% relative humidity. Note: Long Term Static Load: Conditions such as temperature variations, engagement area, closure pressure and vibrations or side to side movement after engagement or exposure to prolonged periods of moisture, ultraviolet or other environmental factors can affect the closure strength and long term static load performance. Reclosable fasteners may slip or creep in the direction of the static load forces when subjected to static loads at temperatures or weights greater than indicated. The user is responsible for designing the amount of fastening area based upon the specific conditions for the application. Four square inches of fastening area per pound (57.3 sq. cm/kilogram) of static load is suggested as a starting point for such evaluations. a) System performance tests are determined by measuring the performance of the entire mated reclosable fastener system consisting of two non-anodized aluminum plates joined together with the indicated fasteners. The T peel test only measures the closure performance per ASTM D5170 and was not adhered to aluminum panels. The 90 peel has one of the mated fasteners attached to a non-anodized aluminum plate while the other mated fastener is not attached to a adherend and is disengaged at a 90 angle. b) The use of 3M Scotchmate Loop Reclosable Fasteners engaged to 3M Dual Lock Reclosable Fasteners provides increased strength over standard Scotchmate reclosable fasteners, with a limited number of reclosures compared with Scotchmate systems. Due to the very high strength of Scotchmate reclosable fasteners mated to Dual Lock reclosable fasteners, extra care should be given to ensure the maximum bond strength is obtained to the adherends being joined. Failure to obtain bond strengths sufficiently high to the adherend may cause the fasteners adhesive to release from the adherend. c) 3M Scotchmate Reclosable Fasteners SJ3526N and SJ3527N and SJ3540 are engaged with firm pressure and disengaged, peeled or cleaved at the rate of 12 inches (305 mm) per minute. d) The engaged thickness was measured using a 0.5 diameter pressure foot supporting a 34 gram weight. Engaged thickness per given fastener area will decrease when compressed or increase with no load or when the engaged are separated in tensile. e) Cycle Life is the number of cycles (openings and closings) that the fastener is subjected to while maintaining 50% or greater of the initial peel value. - 2 -