Any substance that holds or binds together two different surfaces is called an adhesive. In our daily life, we make use of glue sticks, cello tapes etc. for this purpose. The industry, however, uses different types of adhesives that are classified on the basis of their composition, adhesive properties and cure mechanism.
In industry using an adhesive is seen as an alternative to welding or mechanical fastening. The adhesives are integrated into their assembly process and design, manufacturing to enhance the performance and the reliability of the product and reduce their overall manufacturing costs.
Today many types of industrial adhesives are available in the market that are used for different tasks by a number of industries. While they are classified on the basis of their properties, composition or cure mechanism, they have one thing in common. That is all of them are designed in a manner that they reduce the time and money required when used.
These adhesives can be classified
- Depending on their chemistries like epoxy resin adhesive, polyurethanes and polyamides
- Depending on their form like tape, pellets, liquid, paste etc.
- Depending on their type like pressure sensitive, reactive hot melt, thermosetting, etc.
- Depending on their load carrying capabilities like structural, non-structural or semi-structural.
Let’s discuss some common adhesives used in the industry.
- Resins: They are a type of polymer which has a synthetic origin and can be both of thermostatic or thermosetting types. It means they can or cannot be remoulded once the curing process is over.
- Epoxy Adhesives: They are applicable to adherents covering an extensive range. As they can bond metals, plastics and also concrete surfaces they are widely used in a variety of industries including the aircraft, automobile and plywood industries.
- Cemedine Adhesive: It is a quick curing adhesive that uses the moisture present in the surrounding air for the curing reaction. It cures at normal temperature, is easy to use and can be used on a variety of substances like metals, rubber and plastic.
- Conductive: It is widely used in construction industries and especially in those industries that needs to avoid electromagnetic and radio interference or the electrostatic discharges. Use of conductive adhesives improves the heat dissipation as it forms thermo-conductive layers between the components and the products.
- Anaerobic Adhesive: At times in industry, you need to seal things without using oxygen, air, heat or even light. In such scenarios anaerobic industrial adhesives comes to rescue. It can bond a variety of materials like ceramic, paper, glass, plastic, masonry, fabric, wood, rubber etc. together.
These adhesives are different in composition and properties and thus the way they are applied is also different. They can be either spread on a surface by using some sophisticated or robotic equipment or can be done manually. The specifications required for curing for a particular type of adhesive needs to be followed for the proper result.