Bonding with double sided tapes.

Updated: Sep 28


In this article 'bonding with double sided tapes', we’re giving you all the information you need to know about choosing and using double-sided tape in seaming, splicing, bonding and beyond.


With pressure sensitive adhesive exposed on both sides, double sided tape enables the bonding of two similar or completely different substrates or parts using only the tape between them. How it does this depends largely on the tape’s carrier.



THE KEY INGREDIENT TO DOUBLE SIDED TAPE


A double sided tape’s carrier is the material that separates and holds the two adhesives, one on each side. The material the carrier is made of may be paper, tissue, plastic, film, or foam, and its thickness can range from a fraction of a millimeter up to a thick foam.

A carrier’s material and thickness are important when it comes to the application required for the tape to withstand. The stresses an adhesive will be under largely determines the carrier stability required. Plus, many bonding applications perform multiple tasks. For instance, a gasket performs a unique function separate from bonding, yet it can succeed at both when properly designed.

The carrier may have the same adhesive on both sides or a different adhesive on each side for adhering to dissimilar materials with different bonding properties.



WHAT EXACTLY IS DOUBLE-SIDED TAPE?


Double-sided tape is used to bond two surfaces or parts together, often in place of mechanical fasteners, liquid adhesives, and even spot welding. While highly effective, double-sided tape is typically a simple product with three components: adhesive, a carrier, and a release liner.

As the name implies, both sides of the tape are coated with a pressure-sensitive adhesive (PSA). This type of adhesive is advantageous on many fronts. PSAs are easy to apply (just peel, stick, and apply pressure) without curing. They offer a consistent bond-line thickness and even distribution loading. Finally, they are low-odor and do not require ventilation during assembly.

Double-sided tape can have the same adhesive on both sides or different adhesives when joining dissimilar substrates. Additionally, adhesives can range from low-tack and reposition-able to long-term, highly resistant bonds.

Finally, the liner is the temporary backing that protects the adhesive. When the tape is ready to be applied, the liner is peeled back, removed from the tape, and discarded.


i-STIX's line of double-sided tapes can be broken into six main categories:

  • UHB Tapes – Short for Ultra High Bond, these tapes are ideal for strong, permanent bonding.

  • Tissue Tapes – Discreet, printable tapes with industrial-strength attachment.

  • Foam Tapes – Acrylic and general-purpose tapes with a foam carrier for vibration dampening, sealing, or other purposes.

  • Polyester Tapes – Demanding applications such as heavy stress, high temperatures or critical substrates.

  • Cloth Tape – Very good for bonding to rough surfaces and can be removed quickly and cleanly after use.

  • Thermal Conductive Tape – designed to provide preferential heat transfer between heat generating electronic components and cooling devices.


BENEFITS OF DOUBLE-SIDED TAPES


Compared to other fastening or bonding options, double-side tape delivers a long list of advantages. While each type of tape offers distinct characteristics, the following are some high-level benefits you can look forward to.

  • Faster assembly time – Easy application (manually or with automation) with no additional curing time. Tape is also quicker to apply than mechanical fasteners.