Dual Lock Low Profile SJ-4570 : May 2000 : Product Description such as, screws, clips, rivets, snaps and bolts in many applications where items need to of continuous strips of plastic backing, with tiny plastic mushroom shaped stems protruding up from the backing strip. When two pieces of Dual Lock low profile reclosable creating an audible snap which announces that the fastener is locked. The Dual Lock low profile reclosable fastener is thinner allowing it to be more flexible than similar reclosable fasteners. In addition, the Dual Lock low profile reclosable fastener offers intermediate fasteners, with all of the advantages of a self-mating product. Product Construction Construction Backing Colour Clear Acrylic Liner 0.31 grams/1 (25mm) Weight -20F (29 C) and up to 158 F (70 Operating Temperature Engaged Thickness 0.067 in. 1.7 mm Cycle Life is the number of cycles (openings and closings) that the fastener is subjected to while maintaining 50% of the original values for tensile, shear or peel. 12 months from date of manufacture when stored in Shelf Life original package at 72F (21 C) and 50% relative humidity. Closure Cycle Life 25-100 Plasticiser Resistance No 15% (without liner) Range C) Not for specification purposes Physical Properties Paper, Diecuttable Adhesive Clear Material of Polypropylene strength between regular Dual Lock reclosable fasteners and 3M Scotchmate reclosable fasteners are pressed together, thousands of mushroom heads interlock with one another be accessed or repositioned frequently. Dual Lock low profile reclosable fasteners consist 3M Dual Lock Low Profile Reclosable Fasteners can replace conventional fasteners New Supersedes Updated Preliminary Product Data Sheet Reclosable Fastener2 Date : Reclosable Fastener SJ-4570 Dynamic Tensile 25.9 lbs./sq. inch (kN/ m) Engagement Strength Dynamic Tensile 42.4 lbs./sq. inch (kN/m) Strength 45.4 lbs./sq. inch (kN/m) overlap) Strength 25.9 lbs./inch width (N/100mm) Dynamic Tensile 42.4 lbs./sq. inch (kN/m) Strength Dual Lock low profile reclosable fastener SJ-4570 was disengaged, peeled or cleaved at the rate of 12 inches (305mm) per minute. Note : In long term static load applications, conditions such as temperature variation, jarring, vibration etc. can affect long term performance. The user should design the amount of fastening area based on the specific conditions in the application. Four square inches of fastening area per pound of static load is suggested as a starting point for such evaluations. Surfaces must be smooth, thoroughly cleaned and free of oil and surface contamination Application Techniques and dry. In some exceptional cases (contamination by mould release, rough or porous surfaces etc.) it may be necessary to sand or lightly abrade the surface. It is solution (50/50) and allowed to dry before application of fastener. Note : When using solvents, be sure to follow the manufacturers precautions and directions for use when handling such materials. liner (avoid contamination of adhesive) and apply with uniform, firm pressure for intimate surface contact to the substrate. Allow 72 hours dwell for maximum bond strength prior to General Information The adhesive system on SJ-4570 provides reliable bonding to a wide variety of materials including but not limited to those listed below : Many Plastics : Acrylic Glass Rigid Vinyl Structural Composites Powder Coated Paints Sealed Wood Polystyrene Fibreglass Polycarbonate Painted Metals ABS Bare Metals PRESSURE SENSITIVE ADHESIVE ATTACHMENT : be recessing the Dual Lock low profile reclosable fastener or by rounding the corners. testing or stressing the adhesive bond. Improved resistance to edge peel can be provided Apply when fastener and surface temperatures are above 68F (20C). Remove protective recommended that the substrate be cleaned with a solvent such as isopropanol/water Disengagement Adhesive Performance Not for specification purposes Adhesion Characteristics Dynamic 90 Peel Performance Dynamic Shear (1 x 1 Disengagement Closure Performance Not for specification purposes Characteristics Performance Low Profile Dual Lock May 2000