Bond strength is the measure of adhesion between two bonded surfaces, such as those in laminated or cemented wire and cable constructions.
In cable manufacturing, bond strength refers to how effectively materials like conductors, insulation, and jacketing adhere during production. Strong adhesion prevents delamination, enhances mechanical durability, and maintains electrical performance under stress. Factors influencing bond strength include bonding method, adhesive selection, surface preparation, and exposure to heat, moisture, or chemicals. In commercial and industrial environments, consistent bond strength supports signal stability, reduces crosstalk, and improves cable resilience, while weak bonding may cause structural failures and signal degradation.
Bond strength is evaluated using test methods and standards developed by UL (Underwriters Laboratories), ASTM (American Society for Testing and Materials), and IEC (International Electrotechnical Commission).
Bond strength became a critical specification in the mid-20th century with the rise of laminated and bonded cable designs. As telecommunications and data systems required higher-density wiring, manufacturers developed standardized adhesion measurements to ensure performance and durability in compact configurations.