Hot Tack Tester QualiTack™
ASTM F1921
Standard Test Method for Hot Seal Strength (Hot Tack) of Thermoplastic Polymers and Blends Comprising the Sealing Surfaces of Flexible Webs
In form-fill operations, sealed areas of packages are frequently subject to disruptive forces while still hot. If the hot seals have inadequate resistance to these forces, breakage can occur during the packaging process. This test method measures hot seal strength and can be used to characterize and rank materials in their ability to perform in commercial applications where this quality is critical.
This test method covers laboratory measurement of the strength of heatseals formed between thermoplastic surfaces of flexible webs, immediately after a seal has been made and before it cools to ambient temperature (hot tack strength).
The Hot Tack test method is restricted to instrumented hot tack testing, requiring a testing machine that automatically heatseals a specimen and immediately determines strength of the hot seal at a precisely measured time after conclusion of the sealing cycle.
ASTM F2029
Standard Practices for Making Laboratory Heat Seals for Determination of Heat Sealability of Flexible Barrier Materials as Measured by Seal Strength
These practices facilitate the determination of laboratory heat sealability of flexible barrier materials. While it is necessary to have a heat seal layer that provides adequate seal strength for the application, other material properties, such as the overall construction and thickness, will impact the sealing properties of the material. These practices allow the impact of changes in material properties on heat sealability to be measured.
Applications
 | Plastic film | Suitable for food, medicine, various types of composite films and other soft packages |
 | Medical nonwovens | Medical Device Packaging |
