3M Dual Lock Reclosable Fastener SJ3550CF
The 3M Dual Lock Reclosable Fastener SJ3550CF is a Type 250 reclosable fastener, supplied as a roll. The product is designed for assemblies that need to be opened and closed repeatedly, and it is specified with 250 stems per square inch, equivalent to 39 stems/cm². The engaged thickness is 5.74 mm.
The construction consists of a polypropylene backing with a clear, pressure-sensitive acrylic adhesive and a silicone-treated polyolefin liner. This construction is relevant when working with a solution where both the mounting structure and subsequent reclosing need to be known and consistent. The 3M Dual Lock Reclosable Fastener SJ3550CF is supplied with an overall width of 25 mm and a roll length of 45.7 m.
The datasheet indicates a typical long-term temperature resistance of 93°C (200°F) and a cycle life of 1,000 closures before the original peel strength is reduced by 50%. This makes the product's mechanical life and temperature rating central data for technical dimensioning.
Documentation
See datasheet from the manufacturer
Specifications
- Manufacturer: 3M
- MPN: 7100279420
- Product name: 3M Dual Lock Reclosable Fastener SJ3550CF
- Type: Type 250 reclosable fastener
- Delivery form: Roll
- Overall width: 25 mm
- Roll length: 45.7 m
- Stem density: 250 stems per square inch (39 stems/cm²)
- Engaged thickness: 5.74 mm
- Backing material: Polypropylene
- Adhesive: Clear acrylic pressure-sensitive adhesive
- Liner: Silicone-treated polyolefin liner
- Typical long-term temperature resistance: 93°C (200°F)
- Cycle life: 1,000 closures before losing 50% of original peel strength
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