Difference Between Hot Tack and Seal Strength
In the realm of packaging materials testing, understanding the properties and performance of seals is crucial. Two critical parameters often discussed are hot tack and seal strength. While they may seem similar, they are distinct in their applications and the insights they provide into the performance of packaging materials. This article delves into the differences between hot tack and seal strength, referencing ASTM standards F1921 and F2029, and highlights the advantages of using Cell Instruments' hot tack tester for accurate and reliable testing. What is Hot Tack? Hot tack refers to the ability of a heat-sealed joint to withstand a tensile force while still hot, immediately after sealing. This property is critical in high-speed packaging operations where the sealed packages are subjected to stresses before they cool down and develop their full seal strength. The hot tack test measures the immediate holding force of the seal and helps in optimizing packaging...