The Sonic Revolution: How Adhesives could increase the Airflow in speakers  

Speakers have evolved beyond just gadgets; they now accompany us through every facet of life, delivering immersive sound experiences that enrich our daily adventures. From the portability of Bluetooth speakers to the immersive audio of home entertainment setups, the demand for superior sound quality is soaring. With the market projected to reach a remarkable $48 billion by 2025, driven by the surge in smart devices and AI-powered assistants, the importance of innovation in speaker design cannot be overstated. Amidst this evolution, adhesive technology emerges as a silent hero, quietly revolutionizing speaker construction and performance. 

What is a Thermoplastic Adhesive Film?

Thermoplastic adhesive film, commonly known as hotmelt adhesive film, is typically presented in the form of a roll. This adhesive solution can be manufactured using different techniques, resulting in either monolayer or multi-layer structures. 

• Monolayer Thermoplastic Adhesive Film: This film consists of a single layer of adhesive material. 
• Multi-layer Thermoplastic Adhesive Film: This film combines up to 5 layers coextruded into a single film.  

Examples include: 

• 3-layer ABA films (Adhesive+Barrier+Adhesive)  
• 2-layer AB films (Adhesive+Barrier) or 2-layer AA films (Adhesive+Adhesive)  

Meet Us at Techtextil Messe FRankfurt from April 23rd to 26th Booth C18 Hall 11

Protechnic will attend Foam Expo Europe / Adhesive & Bonding Expo from December 5th to 7th in Stuttgart.

Come meet us Hall 1  –  Booth n°841

See you there !

Dry lamination is a technique employed in both automotive and industrial applications to bond two or more flexible substrates without the use of solvent-based adhesives or liquids. The adhesive utilized in this process often comes in roll form, which can have various structures like webs, films, or nets.

Using a roll-to-roll method, dry lamination facilitates quick bonding of different substrates. The bonding between the laminated layers is primarily achieved through thermoplastic adhesives such as polyolefin, polyester, co-polyester, co-polyamides, TPU, and specialty blend polymers.

For this roll-to-roll technique, the production line must be equipped with rollers to accommodate both the film or web and the various substrate layers. The thermoplastic adhesive is placed between these layers, and a laminating calender—with adjustable heat and pressure settings—ensures the materials bond correctly.

What is a Hot Melt Adhesive Net ?

In the adhesive market, “hot melt” (HMA) often refers to solid glue. There are several forms of hot melt adhesives, which can be categorized based on their physical characteristics and application methods.

Some common forms include:

• Hot Melt Sticks or Glue Sticks
• Hot Melt Pellets or Granules
• Hot Melt Powders
• Hot Melt Cartridges
• Hot Melt Films, Sheets, or thermoplastic films.

For Hot Melt Films, they can be extruded in different structures, like Film, Web, and Net. In this article, we will dive into the subject of hot melt adhesives focusing on their extrusion in a net structure, which we call thermoplastic or Hot Melt Net. This is an important innovation to make adhesive more flexible and breathable. We’ll learn more about its unique form, applications, functions, and the numerous advantages and added value adhesive net offers over traditional gluing methods.