Labthink Instruments Co., Ltd. [email protected] +86-531-85068566 Testing for Improvement of Opening Easiness of Packages Containers encompass bottle and cup forms. Bottle caps should be designed for easy opening, typically by controlling the torque force required for rotation. Special attention is given to pull-tab caps, ensuring they open with a designated amount of force. Cups are generally opened by peeling a sealed area or puncturing the rim using tools like straws. Here, the focus is on adjusting the seal strength or puncture resistance of the material according to the package's contents and target consumers. For instance, children's beverage packaging should consider a child's grip and wrist strength when designing the opening mechanism.
Open the catalog to page 1Labthink Instruments Co., Ltd. [email protected] +86-531-85068566 Several key parameters are identified to improve opening easiness in containers: Friction Coefficient Testing: This test measures the friction on the external package wall, bottle cap surface, and cap material surface. A low friction coefficient on the external wall can make the bottle slippery and difficult to hold during opening. Conversely, a high friction coefficient between the bottle cap and hand improves grip during twisting. Similarly, a high friction coefficient on the sealing film of a cup lid enhances grip while peeling...
Open the catalog to page 2Labthink Instruments Co., Ltd. [email protected] +86-531-85068566 Friction Coefficient: Similar to containers, the friction coefficient of the external package surface is crucial for consumers to grip the bag and avoid slippage while opening. Tearing Strength Test: Easy-open apertures are a preferred opening method for flexible bags as they require minimal force and no tools. The force required to open an easy-open aperture is estimated by measuring the tearing strength of the film. The tearing strength can vary depending on the direction of force applied due to the inherent properties of the...
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