Close this search box.

Case Study: Smart Watch Bonding With Bostik

In this case study, we explore how a Bostik product was used to increase design opportunities within a smart watch bonding application.

Table of Contents

More Design Possibilities with Born2Bond™ ULTRA HV

Smartwatches are immensely popular because of the many functionalities they have. After all, who doesn’t like to be able to read their messages directly while activities such as heart rate or stress level are also measured! However, from a technical perspective, there are challenges in assembling the small, complicated components and parts.

In the case of smartwatches, the requirements of skin contact must be taken into account and materials that are difficult to bond are often used. The case below illustrates this.

The Challenge

A manufacturer of portable electronic devices used a silicone rubber as a wristband. Silicone was chosen because it meets the requirements for skin contact (biocompatibility, sweat and odour resistance). In addition to the good adhesion of silicone rubber to polycarbonate, a very small amount of adhesive must also be applied accurately and quickly using a manual dosing method.

Bonding silicone rubber is not easy because of the low surface energy. The company tried various adhesive technologies and invested a lot of time and resources to solve the problem, unfortunately without desired results. It started to look like the company wouldn’t be able to produce the product.

The Solution

Then Bostik was called in and asked about a possible solution. The product specialists tested several Born2Bond products which showed that the cyanoacrylate Born2bond Ultra HV sealant (adhesive and primer) offered unparalleled adhesion compared to any other technology they had tried.

The Results

Since implementing the Born2Bond™ Ultra HV kit in its production lines, the manufacturer has been able to:

  • Improve the overall product aesthetics thanks to the precise application
  • Increase capacity thanks to the fast fix time of 15 seconds
  • Improve the aesthetics on black substrates due to the low blooming properties

Furthermore, there was no need for the manufacturer to invest in equipment or increase production space.

Bostik Born2Bond™ Ultra HV offers:

  • Low odour
  • High-performance capability due to being less brittle than conventional instant adhesives
  • Multi-substrate bonding
  • Long open time
  • Fast curing time
  • Low fogging

We are your technical partner.

If you have any questions or want to find out more about the possibilities for your industrial application, please complete the contact form and one of our experts will be in touch.

If you have a problem with industrial adhesives, sealants, or electronic protection products and require advice, you can contact our technical support service. Our team can help you to optimize your processes and applications.

Liked this article?

If you found this article interesting please share it using the buttons below.

everything you should know about the EN 45545
Subscribe to the Knowledge Hub

Sign up to receive more articles like this directly in your mail.

Get in touch with Antala

The personal data voluntarily provided by you, through this web form will be treated by ANTALA LTD. as responsible for the treatment, in order to meet your request, query, complaint or suggestion, without communications or data transfers occurring and kept for the time necessary to meet your request. You can exercise the rights of access, rectification or deletion of your data, by writing to, for more information, you can consult our Privacy Policy

EN 45545 Railway Applications

lead magnet railway image

This white paper examines the european standard EN 45545 Fire protection for passenger railway vehicles.