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3M™ Dual Lock™ Reclosable Fastener TB3870

3M Product Number  TB3870     
3M Dual Lock Reclosable Fastener TB3870 Trial Bag
3M Dual Lock Reclosable Fastener TB3870 Trial Bag
A modified acrylic adhesive on the back of a black polypropylene reclosable fastener. 250 stems per square inch. 0.24 inch engaged thickness. Closure life 1,000.
  • Black fastener with mushroom shaped stems backed with a modified acrylic pressure sensitive adhesive.
  • Type 250 stem density polyolefin fastener which mates to Type 170, 250 or 400.
  • Designed to bond to many plastics and powder coated paints and medium to low surface energy materials with little or no surface preparation.
  • General Industrial, Transportation, Speciality Vehicle, Medical, Military, Packaging, Point of Purchase Displays, Exhibits, Electronics, Construction, Furniture, Maintenance Repair and Operations (MRO)
  • Attach Doors, Flexible Solar Panels, Headliners, Access Panels, Signs and Display Components.
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For indoor/outdoor use. Medium temperature performance, temperature resistance 180 F. For use with many plastics (polyethylene, acrylic, polycarbonate, ABS), powder coated paints and medium to low surface energy materials.


Adhesive TypeModified Acrylic Adhesive
BrandDual Lock
Closure Life1000
Engaged Thickness0.24 Inch
Flame RetardantNo
IndustriesTransportation, Specialty Vehicle, Construction, Furniture, Medical, Military & Government, General Industrial, Retail, MRO, Electronics, Packaging
Length10 Linear Foot
Length (Metric)3.05 m
Liner Thickness5 mil
Liner TypeRed Polyethylene
Low ProfileNo
Maximum Operating Temperature (Celsius)82 Degree Celsius
Maximum Operating Temperature (Fahrenheit)180 Degree Fahrenheit
Product FormBag
Stem Density250
Width1 Inch
Width (Metric)25.4 mm