3M SJ3550 Data Sheet

Dual Lock™ Reclosable

Fastener SJ3550

Product Data Sheet

January 2017

Supersedes: October 2016

acrylic pressure sensitive adhesive.

• Durable for indoor and outdoor applications

Product Description

Key Features

Physical Properties

3M™ Dual Lock™ Reclosable Fastener SJ3550 is a general
purpose black reclosable fastener with 250 stems per square inch.
This black fastener has mushroom shaped stems on a
polypropylene carrier, which is coated with a white, general purpose

• General purpose acrylic adhesive bonds to medium to high
surface energy substrates (e.g. metal, ABS)

• Stem density: 250 stems/in²

• Closure cycle life > 1 000

• Mushroom shaped stems snap in place to ensure fastener is

engaged

• Good aging performance and resistance against humidity

• Good initial adhesion

• Quick and easy to install

Type SJ3550

Adhesive Type

Acrylic adhesive

Tape Colour White

Backing Black polypropylene

Stems Black polypropylene

Release Liner 3M branded filmic liner

Engaged Thickness

acc. DIN EN 1942: 2008

5.4 mm

Dual Lock™ Reclosable Fasteners SJ3550

January 2017

Performance Characteristics

Type SJ3550

90 ° Peel adhesion to Stainless Steel

acc. to ISO 29862:2007, 90 ° peel angle @ RT,
after 72h @ RT dwell

25 N/cm

90 ° Peel adhesion to PP

acc. to ISO 29862:2007, 90 ° peel angle @ RT,
after 72h @ RT dwell

90 ° Peel adhesion to ABS

acc. to ISO 29862:2007, 90 ° peel angle @ RT,
after 72h @ RT dwell

4 N/cm

30 N/cm

90 ° Peel adhesion to Stainless Steel

acc. to ISO 29862:2007, 90 ° peel angle @ RT,
after 72h @ RT dwell and after 10d @ 38 °C & 98 % rH

Dyn. Tensile Engagement Strength

acc. to ASTM D897-08, tested @ RT

23 N/cm

113 N/in²

Dyn. Tensile Disengagement Strength

acc. to ASTM D897-08, tested @ RT

Dyn. Tensile Disengagement Strength

acc. to ASTM D897-08, tested @ 70 °C

Dynamic Shear – Max. Force

acc.ISO 29863:2007 to stainless steel

Dynamic Shear – Elongation

acc.ISO 29863:2007 to stainless steel

Static Shear Strength Stainless Steel

ISO 29863:2007, after 72h @ RT dwell
(Holds minimum 77.5 g/cm² for 10.000 minutes)

„T“ Peel (flexible to flexible)

acc. ISO 29862:2007

231 N/in²

56 kPa

102 kPa

60 %

23 °C – 500 g
70 °C – 500 g

53 N/cm