Product Description
3M™ Dual Lock™ Reclosable Fasteners consist of a continuous polyoleɥn ɥlm backing with mushroom shaped stems protruding up from the backing. When pressed together these mushroom shaped stems interlock to provide you with a strong reliable attachment. There are three diɢerent stem densities (170, 250 and 400) oɢered with these fasteners, referring to the approximate number of stems per square inch.

This 3M™ Dual Lock™ Reclosable Fastener SJ3441, has no adhesive backing and is used in specialty applications where unique attachment methods are necessary. 3M™ Dual Lock™ Reclosable Fasteners were developed and work best when held rigid and ɦat therefore all data provided in this document is typical data for when the product is securely anchored, held rigid and lays ɦat. The strength will vary depending on the applications and how well the fastener is attached. It is up to the end user to determine if this product meets the application needs. This black fastener is most commonly attached by applying hot melt, epoxy or liquid adhesive.

This 3M™ Dual Lock™ Reclosable Fastener can be mated in the following combinations of increasing closure strength: type 170 to type 250; type 170 to type 400 and type 250 to type 250 are about the same strength; and type 250 to type 400. For high tensile and shear strength applications, the 3M™ Dual Lock™ Reclosable Fasteners can combine with 3M™ Loop Fastener to form a limited use closure (about 25).