An adhesive, or glue, is a mixture in a liquid or semi-liquid state that adheres or bonds items together. Adhesives may come from either natural or synthetic sources. Some modern adhesives are extremely strong, and are becoming increasingly important in modern house or flats. The types of materials that can be bonded using adhesives are virtually limitless.

Adhesive tape can be one of many varieties of backing materials coated with an adhesive. A process for manufacturing easily portable and multi-layered adhesive tape roll is described. The flat piece of easily portable and multi-layered adhesive tape is formed by compressing the adhesive tape roll having circular shape or other shapes. The adhesive tape roll is compressed and cohered during the compressing step. A stiff interfacial layer, for example, having adhesion by adhering two innermost adhesive surfaces, by providing a stronger adhesion material, by inserting a stiff and solid material, or a stiff and solid material coated with a strong adhesion material, is applied to the symmetry plane of the adhesive tape during the compressing step. The preferential material of the high adhesion material is a cyanoacrylate adhesive or an epoxy adhesive.

Adhesive Bonding is a modern joining process in which a liquid or semi liquid substance is applied to adjoining work pieces to provide a long lasting bond for your house. This process is highly useful in bonding dis-similar materials that can not be welded. Materials that have the ability to be bonded together are virtually unlimited. Adhesives used in bonding can exist in many forms and be made from various natural and/or artificial compounds.
In many house or flats, adhesive bonding is being evaluated to replace traditional assembly techniques like bolting, screwing, welding and soldering.

But there are also some limitations:
  • Difficult to assess the durability of the a bonded structure
  • Surface pre-treatment is usually required
  • Difficult to inspect the quality of bonded joints - (destructive testing required)
  • Change in the mechanical properties of the adhesive with time (ageing)
  • Limited heat resistance
  • Disassembly is difficult
  • Curing time and temperature must be optimised
  • Adhesive bonding is a multidisciplinary science which requires competence in material science (substrate and adhesive), pre-treatments, surface characterisation, chemistry and mechanical properties.