From Handbook of Adhesives and Sealants, Volume 2

6.2 Principal Advantages and Limits of Elastic Bonding

The purpose of this chapter is to explain the principles and mechanisms of Elastic Bonding Technology in simple language and to serve as a reference guide for the cost-effective application of adhesive technology in industrial practice.

6.2.1 Principal Advantages

The key elements of elastic bonding are described in Fig. 11.


Figure 11: Key elements of elastic bonding.

6.2.1.1 Bonding and Sealing in One Operation

Elastic adhesives also act as sealants, and hence they offer a relatively simple but effective way to protect a joint against the ingress of gas or water. Adhesive- bonded joints can also be made resistant to chemical attack. Many mechanical fastening techniques also require sealing of the joint, which implies additional work and expense.

6.2.1.2 Tolerance Compensation

Manufacturing tolerances for components in the motor and general transport industries are usually measured in millimetres. This applies particularly to large components made from glass (e.g. curved windshields) or plastics (e.g. roof modules). Where a welded steel or aluminum frame provides structural support, the tolerances involved in the case of very large or very long components may well exceed one centimetre. Elastic Bonding Technology allows manufacturers to bridge gaps of this order without loss of strength.

In cases where rigid adhesives are used, the strength of the joint depends very much on the thickness of the adhesive layer. Satisfactory results can be guaranteed only if the optimum thickness of the adhesive is precisely maintained, since even slight deviations can reduce the...

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Products & Services
Foam Bonding Tapes
Foam bonding tapes are specialized tapes designed for adhesive joining of foam materials.
Double Sided and Transfer Tapes
Double sided tapes are coated with adhesive on both sides of the backing or carrier. Transfer tapes consist of a thin adhesive film without a carrier or backing.
Packaging Tapes
Packaging tape is a rolled adhesive lining manufactured for sealing, wrapping, enclosing, and bundling to prepare items for handling, storage, or shipping. This includes packaging like shrink wrap and corrosion inhibiting films.
Silicon Nitride and Silicon Nitride Ceramics
Silicon nitride and silicon nitride ceramics have outstanding high-temperature, mechanical, wear, and thermal properties.  These hard ceramics also have moderate thermal conductivity, a low coefficient of thermal expansion, a moderately high elastic modulus, and unusually high fracture toughness.

Topics of Interest

6.3 Long-Term Durability and Ageing Tests 6.3.1 Long-Term Durability The long-term durability of an adhesively bonded connection, i.e. its ability to function effectively throughout its design life,...

6.4 Joint Design and Calculation for Elastic Bonding Applications 6.4.1 Joint Design [*] The successful and cost-effective application of adhesive bonding technology is crucially dependent on correct...

An adhesive can be defined as a substance that is capable of holding materials together by surface attachment. Surfaces on which an adhesive is applied are known as adherends, while the process of...

Elastic adhesives have high peel strength, impact resistance, and flexibility The photoelastic models of joint assemblies show stress distribution. In the view of a thin-layer rigid adhesive, the...

Glossary Activator Chemical agent used to prepare surfaces for bonding Adhesive Non-metallic substance that joins components together by forming an interfacial bond between them Adhesive joint...