Hook and Loop Reclosable Fasteners
SJP7401 Loop
SJP7402 Hook
SJA7501 Loop
SJA7502 Hook
Technical Data
Sew-on, no adhesive
Sew-on, no adhesive
Rubber based PSA
Rubber based PSA
January, 2011
Product Description
These specially formulated 3M™ Hook and Loop Reclosable Fasteners offer
value pricing while giving you basic closure alternatives to zippers, screws, snaps,
hooks and more. These Hook and Loop Fasteners engage easily with minimal
pressure to form a quick fastening attachment, simply pull the strips apart by hand
to disengage.
These hook and loop fasteners are available coated on the backside with a rubber
based pressure sensitive adhesive or non-coated for sewing applications.
Product Construction
Note: The following technical information and data should be considered representative
or typical only and should not be used for specification purposes.
Plain Backed
3M™ Reclosable Fastener
SJP7401
SJP7402
nylon
polyester
none
Black or White
Adhesive Backed
3M™ Reclosable Fastener
SJA7501
SJA7502
nylon
polyester
rubber based
Black or White
Loop
Hook
Material of Construction
Hook or Loop
Backing
Adhesive Type
Standard Colors
(custom colors NOT available)
Thickness unmated
Loop (minimum)
Hook (typical)
Engaged
Shelf Life
Typical Widths
Available Length
Storage
0.80”
0.076”
0.11”
18 months
0.080”
0.08”
0.12”
12 months
5/8", 3/4", 1", 1
1
/
2
", 2", 4"
50 yards (45.7 meters)
Store in original packaging between 60° to 80°F
(16° to 27°C) and 40 to 60% Relative Humidity.
3M
™
Hook and Loop Reclosable Fasteners
SJP7401 Loop • SJP7402 Hook • SJA7501 Loop • SJA7502 Hook
Typical System
Performance
Note: The following technical information and data should be considered representative or
typical only and should not be used for specification purposes.
Plain Backed
Adhesive Backed
3M™ Reclosable Fastener 3M™ Reclosable Fastener
SJP7401
SJA7501
SJP7402
SJA7502
lbs
F
/sq inch
< 1.0
9.0
100 grams/in
2
10,000
10,000
500*
500*
lbs
F
/sq inch
16.0
100 grams/in
2
10,000
10,000
10,000
10,000
500 grams/in
2
10,000
10,000
10,000
10,000
16.0
100 grams/in
2
10,000
10,000
42*
500*
500 grams/in
2
3,500*
700*
5*
500*
Loop
Hook
TENSILE (Rigid to Rigid Substrates) 12ipm
Dynamic Tensile Engagement
< 1.0
Dynamic Tensile Disengagement
9.0
Static Tensile Holding Power for indicated
time in minutes and temperature 1" x 1"
100 grams/in
2
72°F
10,000
10,000
120°F
158°F
10,000
100°F/100% RH
10,000
SHEAR (1" x 1" overlap)
Dynamic Shear (12ipm)
Static Shear Holding Power for indicated
time in minutes and temperature
72°F
120°F
158°F
100°F/100% RH
72°F
120°F
158°F
100°F/100% RH
PEEL AND CLEAVAGE @ 12" per minute
“T” Peel, Flexible to Flexible
Cleavage rigid to rigid
Peel strength in pounds per inch width
1.25
1.25
4.35
4.35
Typical Adhesive
Performance
Note: The following technical information and data should be considered representative or
typical only and should not be used for specification purposes.
90° peel adhesion
at 12 inches per minute
Pounds per inch
Dwell
Initial
(15 minutes)
72 hour
@ 72°F
Stainless Steel
14
ABS
11
Polypropylene
12
14
15
13
*These are adhesive failures, not failure at the mated hook and loop
As always, 3M suggests that customers test this product for their intended specific application.
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3M
™
Hook and Loop Reclosable Fasteners
SJP7401 Loop • SJP7402 Hook • SJA7501 Loop • SJA7502 Hook
Design Considerations
• You will need to determine how much fastener will be needed to support your
application, however 4 square inches of 3M™ Reclosable Fastener to support
1 pound of weight is our general suggestion.
• Rounding the corners of the fastener, slightly recessing the product into the
surface or providing raised edges around the Reclosable fastener can reduce the
possibility of edge lifting and improve the overall appearance of the fastener on
the finished product.
• These hook and loop Reclosable fasteners should be applied to surfaces that are
clean, dry and free of oil, grease, dust, mold release agents or surface
contaminants that could reduce the adhesion.
• To obtain an optimum bond to any surface, both the fasteners and the target
surfaces should have equilibrated for a minimum of 1 hour at temperatures
between 68°F (20°C) to 90°F (32.2°C) before application. The liner protecting
the adhesive is removed and preferably without touching the adhesive, the
fastener is applied to the surface to obtain initial contact between the adhesive
and substrate. Exposure of the adhesive to ambient conditions without the
protective liner, before applying to the surface, should be minimized as initial
adhesive tack may decrease. Flexible materials should be lying on a hard flat
surface so as to permit uniform adhesive contact with the surface. Use of a
rubber hand roller, press platen or similar device is recommended to ensure full
adhesive contact with the surface. Approximately 4.5 pounds of force per square
inch, (310 grams per square centimeter) is recommended to increase adhesive
contact, improving bond strength. For all adhesive applications, it is important
to ensure that the edges are rolled down to reduce the chance of edge lifting.
• It is essential that the user evaluate this product to determine whether it is fit for
a particular purpose and suitable for the user’s method of application
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3M
™
Hook and Loop Reclosable Fasteners
SJP7401 Loop • SJP7402 Hook • SJA7501 Loop • SJA7502 Hook
Performance
Characteristics
Note: The following technical information and data should be considered representative
or typical only and should not be used for specification purposes.
Solvent Resistance:
The plain backed nylon/polyester components resist occasional
attack by most common solvents and alkaline solutions. Acid solutions may cause
deterioration of the fastener. The adhesive on 3M™ Hook and Loop Reclosable
Fasteners SJA7501 and SJA7502 may be compromised by many common laboratory
solvents and transportation fluids (gasoline, motor oil, etc.). Where solvent
resistance is important it is suggested that the customer evaluate 3M™ Hook and
Loop SJ3571, SJ3572, SJ3576, SJ3577 or many of our 3M™ Dual Lock™
Reclosable Fastener products to determine if the actual adhesive performance meets
their application requirements.
Plasticizer Resistance:
The adhesive on Reclosable fasteners SJA7501 and
SJA7502 is not recommended for attaching to many common flexible vinyl’s or
other materials containing plasticizing materials. If plasticizer resistance is desired
3M™ Hook and Loop SJ3522 and SJ3523 or many of our Dual Lock products can
be evaluated.
Flammability Resistance:
If you need 3M™ Reclosable Fasteners that meet many
the standard flammability tests (such as FAR 25.853) SJ3418FR, SJ3419FR,
SJ3486FR and SJ3487FR for sewing applications and SJ3518FR, SJ3519FR,
SJ3586FR and SJ3587FR for pressure sensitive applications.
Environmental Effects:
Temperature as low as -20°F (-29°C) increases the typical
closure strengths. The adhesive on 3M™ Hook and Loop Reclosable Fasteners
SJA7501 and SJA7502 has not been formulated to withstand varying temperature,
humidity and ultraviolet exposure conditions. If applications such as exposure to
high temperatures, humidity or ultraviolet light are desired, our 3M™ Scotchmate™
SJ3571, SJ3572, SJ3576 or SJ3577 or many of our Dual Lock products, such as
SJ3560, may be evaluated.
Application Ideas
• 3M™ Hook and Loop Reclosable Fasteners SJP7401 and SJP7402 can be used in
sewing applications where average strength fasteners will be sufficient.
• 3M™ Hook and Loop Reclosable Fasteners SJA7501 and SJA7502 provide a
rubber based adhesive solution for applications at ambient temperatures where
minimal adhesive requirements occur. Because product performance will depend
on actual conditions within any specific application, it is essential that the user
evaluate the 3M product to determine whether it is fit for a particular material
purpose and suitable for the user’s method of application.
• This product is non-returnable so verify that it performs to your requirements.
-4-
3M
™
Hook and Loop Reclosable Fasteners
SJP7401 Loop • SJP7402 Hook • SJA7501 Loop • SJA7502 Hook
Technical Information
The technical information, recommendations and other statements contained in this document are
based upon tests or experience that 3M believes are reliable, but the accuracy or completeness of such
information is not guaranteed.
Product Use
Many factors beyond 3M’s control and uniquely within user’s knowledge and control can affect the use
and performance of a 3M product in a particular application. Given the variety of factors that can affect
the use and performance of a 3M product, user is solely responsible for evaluating the 3M product and
determining whether it is fit for a particular purpose and suitable for user’s method of application.
Warranty,
Limited Remedy,
and Disclaimer
Unless an additional warranty is specifically stated on the applicable 3M product packaging or product
literature, 3M warrants that each 3M product meets the applicable 3M product specification at the time
3M ships the product. 3M MAKES NO OTHER WARRANTIES OR CONDITIONS, EXPRESS OR
IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OR CONDITION OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR ANY IMPLIED WARRANTY
OR CONDITION ARISING OUT OF A COURSE OF DEALING, CUSTOM OR USAGE OF TRADE.
If the 3M product does not conform to this warranty, then the sole and exclusive remedy is, at 3M’s
option, replacement of the 3M product or refund of the purchase price.
Limitation of Liability
Except where prohibited by law, 3M will not be liable for any loss or damage arising from the 3M product,
whether direct, indirect, special, incidental or consequential, regardless of the legal theory asserted,
including warranty, contract, negligence or strict liability.
ISO 9001: 2008 - ISO/TS 16949:2002
This Industrial Adhesives and Tapes Division product was manufactured under a 3M quality system
registered to ISO 9001: 2008 and ISO/TS 16949:2002 standards.
Industrial Adhesives and Tapes Division
3M Center, Building 225-3S-06
St. Paul, MN 55144-1000
800-362-3550 • 877-369-2923 (Fax)
www.3M.com/industrial
Recycled Paper
40% pre-consumer
10% post-consumer
3M, Scotchmate and Dual Lock are
trademarks of 3M Company.
Printed in U.S.A.
©3M 2010 70070940666 (1/11)
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