3M™ Double-Sided Thin Bonding Tapes

3M™ Double-Sided Thin Bonding Tapes

3M™ 9731 Double-Sided Tape

3M™ 9731 Double-Sided Tape is a high-performance tape engineered with two distinct adhesives – a silicone adhesive on one side and an acrylic adhesive on the other, both supported by a polyester film carrier. This unique design allows bonding of silicone materials to other substrates, such as metals, plastics, and composites, making it the go-to solution for applications involving mixed material surfaces and high-temperature processing.

Built to withstand short-term exposure up to 260°C (500°F), 3M™ 9731 also ensures excellent holding power, clean removability from many surfaces, and low outgassing.

Applications – Where to Use 3M™ 9731

Bonding silicone foams, rubbers, and gaskets to metal or plastic
Flexible Printed Circuit (FPC) mounting
Automotive and aerospace electronics
Lamination of thermal insulation materials
Assembly of appliances and industrial equipment
Electronics component insulation or vibration dampening
Heat shielding or EMI/RFI shielding assembly
Die-cut adhesive parts for complex assemblies

Why Choose 3M™ 9731 Double-Sided Tape?

Dual Adhesive System
Silicone adhesive on one side and acrylic adhesive on the other enables bonding between dissimilar materials.
High-Temperature Resistance
Withstands up to 260°C short term – ideal for solder reflow and other heat-intensive processes.
Excellent Holding Strength
Maintains stable, secure bonds across a range of materials and surfaces.
Clean Processing & Low Outgassing
Suitable for cleanroom and sensitive electronics applications.
Dimensional Stability for Converting
Polyester carrier ensures easy handling and clean die-cutting.
Removability from Many Surfaces
Allows repositioning or clean part separation after bonding.

Why Work with EKO-TECH – A Certified 3M™ Select Converter

As a 3M™ Select Converter, EKO-TECH brings deep knowledge and advanced capabilities to your adhesive project:

Direct access to 3M™ 9731 tape with full traceability
Precision converting with tight tolerances for technical parts
Support from prototyping to volume production
Customized consulting for design, substrates, and process integration
Reliable lead times and flexible formats to suit your workflow

We translate performance materials into process-ready adhesive solutions.

Converting Capabilities – What We Do with 3M™ 9731

At EKO-TECH, we tailor the 3M™ 9731 Double-Sided Tape to your exact requirements using industry-leading converting processes:

Rewinding to custom roll lengths
Slitting to precise widths
Sheeting for application or lamination stages
Die-Cutting & Kiss-Cutting for functional, production-ready parts
Cross-Wound Spooling for high-speed automation and dispenser compatibility

Whether you need 3M™ 9731 in sheets, rolls, or die-cut parts – we convert your ideas into high-performance adhesive components.

Technical data:

Primary liner colour Light brown
Secondary liner colour Transparent
Product colour Transparent
Packaging per box 1.0
Core dimensions (metric measurements) 76.2 mm
Shelf life in months (from date of manufacture) 12
Adhesive backing (metric measurements) 0.033 mm, 0.041 mm
Indoor/Outdoor Both
Master width (metric) 122 cm
Primary liner 58# Poly-coated kraft paper (PCK)
Secondary liner Polyester film
Master length (metric) 98.8 m

Brands 3M™
Backing material Polyester
Backing material Polyester
Backing material Polyester film
Markets Signage, Special vehicle, Metalworking, Aerospace, Appliances, Automotive, Converter solutions, Electronics, Military and government, Medical, General industrial, Transportation, Oil and gas
Number of adhesive faces Double-sided
Primary line thickness (metric) 0.11 mm, 0.17 mm
Secondary line thickness (metric) 0.07 mm
Backing thickness (metric) 0.025 mm, 0.03 mm

Adhesive back thickness (metric) 0.07 mm
Backing thickness (metric) 0.03 mm
Total thickness without liner (metric) 0.14 mm
Product form Roll
Maximum operating temperature (Celsius) 121 °C
Minimum operating temperature (Celsius) -40 °C
Front adhesive type 350 High-performance acrylic
Adhesive type, rear side Silicone
Adhesive type Acrylic/Silicone, Acrylic
Shelf life 12 months
Overall width (metric) 122 mm, 609.6 cm
Overall length (metric) 33 m

FAQ

What file formats do you need for custom die cuts?Monika Kluk2025-06-05T13:16:24+02:00

What file formats do you need for custom die cuts?

We accept DXF, CAD, and PDF formats to ensure exact replication of your part designs.

Can I order small custom quantities?Monika Kluk2025-06-05T13:14:48+02:00

Can I order small custom quantities?

Yes – EKO-TECH supports both prototypes and full-scale production orders.

Does it support clean die-cutting?Monika Kluk2025-06-05T13:13:23+02:00

Does it support clean die-cutting?

Absolutely. The polyester carrier ensures dimensional stability during kiss-cutting and complex part shaping.

Can it be used in high-temperature environments?Monika Kluk2025-06-05T13:12:02+02:00

Can it be used in high-temperature environments?

Yes. It withstands short-term exposure up to 260°C, perfect for lead-free solder reflow and thermal assemblies.

What makes 3M™ 9731 unique among double-sided tapes?Monika Kluk2025-06-05T13:10:24+02:00

What makes 3M™ 9731 unique among double-sided tapes?

It features dual adhesives – silicone and acrylic – ideal for bonding silicone surfaces to other materials.

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Ready to Connect Silicone and Performance with 3M™ 9731? Let’s Build It Together

If your application demands mixed-material bonding and high-temperature performance, trust 3M™ 9731 – converted by the experts at EKO-TECH. Contact us today for technical support, samples, or a custom quote tailored to your project.

Contact Us!