SJ3401 - 3572 Series Selection Guide Datasheet by 3M

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April, 2014

3M™ Loop Fastener SJ3571

Product Description

3M™ Hook and Loop Fasteners oer advanced closure alternatives to zippers, screws, snaps, hooks and

more. They oer greater design exibility, faster product assembly, smoother and cleaner exterior surfaces

and improved product performance in many applications. 3M hook and loop fasteners consist of hooks and

loops which engage to form a quick fastening attachment. Simply pull the strips apart by hand to disengage.

Product Features

The woven nylon hook has exible, self-supporting inverted j-hooks protruding up from the backing with

approximately 300 hooks per square inch (46 hooks/square cm). The woven nylon loop has thousands of soft,

pliable napped loops protruding above the backing, providing for thousands of openings and closings (cycles).

Both the hook and loop are preshrunk to insure maximum dimensional stability and atness. Standard colors

available are black, white and beige, with several custom colors available with extended delivery times and

additional costs.

SJ3571 is coated with high performance acrylic pressure sensitive adhesive which has high temperature

resistance and resistant to many environmental and chemical conditions.

Commonly paired with 3M™ Hook Fastener SJ3572, this loop fastener can also engage with other 3M™ Hook

Fasteners.

3M™ Loop Fastener SJ3571

Technical Information Note

The following technical information and data should be considered representative or typical only and should not be used for specication purposes.

Typical Physical Properties

Thickness Test Condition

3.2 mm 125 mil Unmated without liner

0.33 mm 140 mil Mated without liner

Property: Thickness

notes: Using 1/2" pressure foot with 34 gram weight

Property Values

Material Loop- Woven Nylon

Backing High Performance Acrylic PSA

Liner Polyolen with embossed 3M logo

Liner Thickness 0.1 mm 4 mil

Liner Color Clear

Weight 0.062 g/cm² 0.014 oz/in²

Typical Performance Characteristics

Property Values Substrate Notes

Dynamic Tensile 7.6 N/cm² 11 lb/in² Nylon Hook to Nylon

Loop

Run at 12 inches per minute

Dynamic Shear 15.2 N/cm² 22 lb/in² Nylon Hook to Nylon

Loop

Run at 12 inches per minute

Cleavage Strength 13.1 g/cm width 7.5 lb/in width Nylon Hook to Nylon

Loop

T-Peel Adhesion 3.5 g/cm width 2 lb/in width Nylon Hook to Nylon

Loop

Run at 12 inches per minute

90° Peel Adhesion 3.9 g/cm width 2.2 lb/in width Nylon Hook to Nylon

Loop

Run at 12 inches per minute

Cycle Life 5000 Nylon Hook to Nylon

Loop

Number of closures before losing 50% of original

strength

Mutena‘ Wmmm yum.“ m M m A55 Mm sums; w Tywm Dyna: 29 31 33 2.: :2 ‘2 340 7001100 Tammy: mev’ u... Sumzmypum ummsumaawPhs-m thsumm ammunm my“: >F gm; Sow on sea on 59:1 on 200 $33? x x x x x x x x 90 Egg“ x x x x x x x x 1m 33% x x x x x x x x 129 332% x x x x x 15a :32; x x x x x 2m nyIiuInood-msimmmmmummwm

3M™ Loop Fastener SJ3571

Typical Performance Characteristics (continued)

Product Performance:

Additional Information

notes: This guide should assist you in determining which product will adhere best to your substrate for.

3M™ Loop Fastener SJ3571

Handling/Application Information

Directions for Use

Attachment Techniques

The following information is intended to assist the designer considering the use of 3M hook and loop fasteners. System product performance depends upon a number

of factors, including the fastener (material, adhesive and area), application method, surface characteristics (material, texture and cleanliness), environmental conditions

(moisture, ultraviolet and temperature exposure) and the time it is expected to support a given load. Because many of these factors are uniquely within the user’s

knowledge and control, it is required that the user evaluate 3M products to determine whether they are t for a particular purpose and are suitable for the user’s

substrates, method of application and desired end use.

Rounding the corners, slightly recessing the product into the substrate, 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 nished product. Mechanically securing the corners of the fastener with rivets, staples, screws, etc.

may also reduce the possibility of edge lifting, but may reduce the closure performance.

The two most common techniques for attaching these 3M hook and loop fasteners to various surfaces are summarized below.

Pressure Sensitive Adhesive Attachment: The use of pressure sensitive adhesives eliminates or reduces the need for sewing, solvent activation, dielectric or ultrasonic

bonding or bulk adhesive bonding. This can result in simplicity, improved safety and lower installation costs. Pressure sensitive adhesive products can be applied

manually or automatically using a variety of equipment choices. Contact your 3M Sales Representative to discuss automated equipment options.

Surface Preparation: Highly textured surfaces may reduce the ultimate adhesion levels and care should be given to minimize the surface texture or roughness.

Adhesive backed 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. It is recommended to remove any surface contaminants that may reduce adhesion by using a method suited for the type and quantity of surface

contaminants present. Isopropal alcohol is a good general use solvent for cleaning contaminants from surfaces for example.

In exceptional cases, especially when removing silicone mold release agents or on rough, porous surfaces, it may be necessary to lightly abrade the surface, use an

adhesion promoter, or surface sealer to optimize the adhesive bond to the substrate. The selection of abrasion, priming or sealing methods will depend upon the

substrates and the environmental conditions the product will be exposed to during use.

Attachment Procedure: To obtain optimum bond to any surface, both the fasteners and the target surfaces should have equilibrated for a minimum of one hour at

temperatures between 68°F (20°C) to 100°F (38°C) before application. The liner protecting the adhesive is removed and preferably without touching the adhesive, the

fastener is applied to the 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 at 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 or wet- out with the substrate 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.

Plain backed

The plain backed 3M hook and loop fasteners are most commonly sewn into their applications. Liquid or hot melt adhesives and staples are other forms of attachment

that can be utilized.

Sewing: Although the selvedge edge was initially developed for stitching on, customers often nd that they get better anchorage when stitching through the 3M hook

and loop portions of the fastener – this may be application dependant. The type of thread and stitch type is also best determined based on individual application,

however, the fastener should be stitched on all edges for the best seam strength. Typically, special machine adjustments

are not necessary when using our 3M hook and loop fasteners

Storage and Shelf Life

Shelf Life when stored in original packaging at 72°F (22°C) and 50% RH is 24 months.

3M™ Loop Fastener SJ3571

Family Group

References

ISO Statement

Technical Information

SJ3401 SJ3522 SJ3523 SJ3526N SJ3527N SJ3402 SJ3531 SJ3571 SJ3572 SJ3532N SJ3533N SJ3530

Thickness (mm)

Test Condition: Unmated

without liner

2 2.4 3.2 2.4 3.2 2 3.2 3.2 2.4 2.03 3.05 2.4

Thickness (mm)

Test Condition: Mated

without liner

3.1 0.33 0.33 0.33 0.33 3.1 0.33 0.33 0.33 3.3 3.3 0.33

Material Loop-

Woven

Nylon

Hook-

Woven

Nylon

Loop-

Woven

Nylon

Hook-

Woven

Nylon

Loop-

Woven

Nylon

Hook-

Woven

Nylon

Loop

Wov

Nylo

Loop-

Woven

Nylon

Hook-

Woven

Nylon

Hook-

Woven

Nylon

Loop-

Woven

Nylon

Hook

Wov

Nylo

Backing No

Adhesi

ve Sew

Plasticiz

resistan

t acrylic

PSA

Plasticiz

resistan

t acrylic

PSA

High

Performan

ce rubber

based PSA

High

Performan

ce rubber

based PSA

Adhesi

Sew

Gene

ral

Purp

ose

rubb

base

PSA

High

Perfor

mance

Acrylic

PSA

High

Perfor

mance

Acrylic

PSA

Rubber

based PSA

Rubber

based PSA

Gene

ral

Purp

ose

rubb

base

PSA

Liner None Non

printed

polyole

n lm

Non

printed

polyole

n lm

Polyethyle

ne with

red

printing

Polyethyle

ne with

red

printing

None Polyp

ropyl

ene

Polyole

n with

emboss

ed 3M

logo

Polyole

n with

emboss

ed 3M

logo

White

Polypropyle

White

Polypropyle

Polyp

ropyl

ene

Liner Thickness (mm) 0.089 0.089 0.08 0.08 0.08 0.1 0.1 0.08 0.08 0.08

Liner Color Clear Clear White White Whit

Clear Clear Whit

1. 3m.com Product Page

Url: https://www.3m.com/3M/en_US/company-us/all-3m-products/~/3M-Loop-Fastener-SJ3571?N=5002385+3293241225&rt=rud

2. Safety Data Sheet

Url: https://www.3m.com/3M/en_US/company-us/SDS-search/results/?gsaAction=msdsSRA&msdsLocale=en_US&co=ptn&q=SJ3571

This Industrial Adhesives and Tapes Division product was manufactured under a 3M quality system registered to ISO 9001: 2000 and ISO/TS 16949:2002 standards.

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.

Many factors beyond 3M5 cuntm‘ and u quely mm" usev’s know‘edge and control can szecnhe use and pevlovmznce of a 3M product an a particular applicat n.

3M™ Loop Fastener SJ3571

Product Use

Warranty, Limited Remedy, and Disclaimer

Limitation of Liability

Industrial Adhesives and Tapes Division

3M Center

St. Paul, MN 55144-1000

800-362-3550

www.3m.com

Please recycle.

The brands listed above are trademarks of 3M.

Many factors beyond 3M’s control and uniquely within user’s knowledge and control can aect the use and performance of a 3M product in a particular application.

Given the variety of factors that can aect the use and performance of a 3M product, user is solely responsible for evaluating the 3M product and determining whether

it is t for a particular purpose and suitable for user’s method of application.

Unless an additional warranty is specically stated on the applicable 3M product packaging or product literature, 3M warrants that each 3M product meets the

applicable 3M product specication 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.

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.