1IN CLR DUAL LOCK FASTENER 2 ROLL (15FT)
3M™ Dual Lock™ Reclosable Fastener Rolls
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15 ft Trial Box TB-3560 Dual Lock Reclosable Fastener - 250/250 Twin Rolls, Clear with High Tack Acrylic Adhesive

Clear • Type 250 Mushroom Heads • High Surface Energy Acrylic Adhesive for "Adhesive Friendly" Surfaces
By: 3M

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Overview
Dual Lock Reclosable Fastening Systems offer closure alternatives to zippers, screws, snaps, and more.
The interlocking mushroom head closure system is 5 times stronger than hook and loop.

Use this Dual Lock Fastener for attaching removable cabinet doors, access panels, signs, furniture cushions, headliners, and display components, etc.

The 3560 Series/Type 250 fastener strips in this product feature 250 clear polypropylene mushrooms per square inch with an aggressive, high tack, pressure sensitive acrylic adhesive on the back.
There is no male/female - both sides are identical.
The acrylic adhesive is suitable for general bonding to most medium and high surface energy (adhesive friendly) surfaces including metals, glass, and HSE plastics like acrylic, polycarbonate and ABS.
At 250 stems per square inch, it forms a moderately strong bond to itself.
See the table below for more details about closure strengths.

• Approximately five times stronger in tensile than typical hook-and-loop fasteners
• No dirt catching fuzz, like hook and loop closure systems
• Can be opened and closed 1,000 times before losing 50% of its original strength
• Can be opened and closed hundreds of times
• High temperature (to 220°F) and solvent resistance
• Can be used outdoors or indoors
• High UV resistance
• Clear fastener/backing combination allows for substrate color to show through the fastener
• Engaged thickness is just under 1/4"

The Dual Lock system consists of continuous strips of plastic mushrooms protruding up from a backing which is typically coated with a high strength pressure sensitive adhesive covered with a peel-off liner.
When 2 strips are pressed together, the mushroom heads interlock, forming a releasable mechanical bond.

There are three Types of these fasteners 170, 250, and 400 — referring to the approximate number of mushrooms per square inch.
They can be mated in the following combinations of increasing closure strength —
Type 170 to Type 250
Type 250 to Type 250
Type 170 to Type 400
Type 250 to Type 400
(Type 170 will not stick to itself, and Type 400 to Type 400 is essentially a permanent bond.)
The "release strength" is a function of the Type(s) selected as well as the surface area of the fastener.

Note that unlike Hook & Loop Fastenings, there is no "male" or "female" side.
Both "sides" are identical - so you only buy one strip; but as noted above, different Types can be mixed to achieve the correct release strength.
 
 
 
 
 
 
 

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