Electronics assembling and manufacturing industries love the custom feature when it comes to ordering membrane switches. In such switches, Pressure Sensitive Adhesives (PSA) plays an important role that you should know. It will not only make placing custom orders from membrane keypad manufacturers easy, but you will also know where exactly you want it.
Today's post will take you through many pointers that will explain PSAs and its uses. So, let's get started.
What are Pressure Sensitive Adhesives? An Introduction
2.Indeed, some factors can affect this bonding. It includes:
3.Designed to bond at room temperature, it can be perfect for both permanent and removable applications. Examples -
Permanent bonding: In between layers of membrane switches and keypads
Removable bonding: Safety labels for various power equipments
How Pressure Sensitive Adhesives get manufactured?
4.PSAs get manufactured in two distinct ways.
5.Many labels and tapes are made using liquid PSAs. This is done by coating the support surface and then evaporating the water carrier using a hot air dryer. This process needs a dry viscous heat to create a cross-linking reaction. It helps to increase the molecular weight.
6.Solid PSAs are low viscosity polymers. They pass through radiation to increase the molecular weight for adhering. Melting solid PSAs reduces its level of viscosity. It makes the coating process easier before it cools back to its last form.
7.They are made up of specific bonding tapes that comprise of fluid adhesive micro wed and a composite backing. Applying these adherents is only possible by the use of force exerted by fingers.
8.The process of application for PSAs is cleaner and stronger as compared to other types of adhering agents. Its basic composition includes an elastomer which can contain any of the following:
9.PSAs must also have an enhanced tack - stickiness on the surface of the adhesive. For ensuring this, the elastomer gets mixed with a tackifier - a lighter molecular compound. Tackifiers provide stiffness during high strain while retaining high-stress compliance. The commonly used tackifiers are:
Where membrane keypad manufacturers use the PSA for construction?
10.PSA membrane switches are the favorites when it comes to application. These switches are popular in switch construction since they are compatible, durable, flexible and repositionable.
11.PSAs are compatible with various switching mechanics such as:
12.Membrane switches are liable to high stress. PSA bonds thus offer a high level of elasticity and are resistant to moisture, heat, and chemicals. This cuts the stress out giving the switches a robust durability.
What more must you know about PSA membrane keypads?
13.You need to identify the environmental situations where you intend to install the switches.
14.PSA switches might fail if subjected to extreme temperatures or comes in contact with certain chemicals.
Thus, it is imperative to note that extreme temperatures, moisture, and chemicals are the enemies of PSA membrane switches. With this set of information, now you have a higher sense of understanding the PSAs. Next time you connect with a membrane keypad manufacturer, feel free to explore the lengths of customization. It is because you can tweak many layers of the membrane switch to keep the expenses low. Oh! And that doesn't hamper the quality or performance of the switches. All you need to do is find a manufacturer that can cater to your needs.