Adhesion Solution

Industrial Adhesive for HMI Assemblies

Manufacturers understand that when attempting to meet the exacting requirements of human-machine interface (HMI) assemblies, the final bonding and adhesion of components is a critically important step in the process.

Achieving sufficient bond strength and flex while meeting industry-specific sealing requirements is not only critically important, it’s also a notoriously difficult engineering challenge, one that many products fail to overcome.

However, e2ip’s development of advanced industrial adhesive solutions can create products that blend quality and innovation in ways others can’t, surpassing expectations every time.

HeatSeal Adhesive Solution

The original equipment manufacturers (OEMs) that represent e2ip’s customer base create a wide range of products, each with varying applications. Regardless of their application, each requires a reliable user interface.

Our expertise working with a variety of industrial adhesives for use in HMI assemblies (such as pressure-sensitive adhesives (PSAs) and electrically conductive adhesives) has led to the development of our own proprietary adhesive solution: HeatSeal™. How does it work?

PSAs are pressure-enabled bonding substrates that do not require heat, water or any type of solvent to activate the adhesive properties. For HMI applications, PSAs are used to fuse the layers of an HMI assembly using solder-free, electrically conductive adhesives. They help achieve solid material bonding, while still allowing contact surfaces to pass electrical currents.


e2ip HeatSeal™ is a proprietary fabrication process for superior product lamination used to enhance the build quality and performance of a number of user interfaces. 

Thanks to low melt-point adhesive bonding technology, HeatSeal™ creates industrially-sound membrane switches and circuit layer assemblies for a wide range of applications, budgets and robustness requirements.

Using an innovative and environmentally friendly manufacturing process, HeatSeal™ protects circuitry from harsh environments, effectively eliminating mechanical failure from inadequate sealing

Manufactured with rigorous testing, HeatSeal™ offers custom projects containing a smarter and safer bonding system solution that remains cost effective and offers a wide range of options for build and function support.

Product Information

Conventional pressure-sensitive adhesives, often used in membrane switch designs, cannot withstand environmental factors such as water, moisture or chemical ingress. 

However, when combined with moisture barrier materials, HeatSeal™ offers the most reliable and robust switch lamination for printed electronics available on the market today. It is a 100% HeatSeal™ bonding system solution.

Using multiple HeatSeal™ layers during the construction process of membrane switches creates a bond of outstanding strength and durability. It is a bonding system that is tested to the extreme, certified and guaranteed to protect circuitry from damage done by even the harshest environments.

Applications and Features

HeatSeal Application

Key Features

  • Various thicknesses available
  • Compatible with a wide variety of plastics
  • Various window and graphic options
  • Ingress protection
  • Moisture migration protection
  • Crack-resistant, blocking silver migration between circuits
  • Chemical-resistant against gasoline, skin oil and soaps
  • Sunscreen and insect repellent
  • Salt fog tested (Mil Std 202F Test Method 101D)
  • Permanent seal from outside environment
  • Wide temperature ranges – Storage temperature range: -40°C – 75°C, Operating temperature range: -20°C – 65°C
  • Waterproof/Gasoline/Bleach ASTM 1895
  • 15KV ESD Testing ASTM 1812
  • Electrical insulation resistance ASTM 1689
  • Air Pressure Differential. Altitude to/from 40,000 feet
  • RoHS Compliant
  • Electrical insulation resistance
  • Safest method of lamination
  • Able to withstand high pressure variations
  • Rigorously tested
  • Reduces the need for external venting


  • Aviation
  • Medical
  • Military
  • Automotive

Possible Applications

  •     Printed electronics
  •     Membrane switches
  •     Flexible PTC heaters
  •     Whitegoods
  •     Food preparation
  •     Gas pump

Learn More

Download the datasheet to see full technological specifications including electrical, mechanical, environmental and certifications.

Electronics should not get in the way of design freedom.

For more information, contact our team.