Deployable Touch Fastener Substrate Displacement

The patent merges the deployment action from individual element manipulation to bulk substrate displacement. The fastening elements are deployed collectively when the substrate is stretched or deformed, eliminating the need for individual bending operations. This is achieved by forming fastening elements that are initially flat or recessed in the substrate and causing them to protrude through substrate deformation.

The fastening elements are pre-formed in a flat or recessed state within the substrate before deployment. The substrate is designed with pre-defined deformation zones or stretch regions that, when activated, automatically cause the fastening elements to assume their functional protruding shape. This preliminary configuration eliminates the need for post-formation individual element bending.

The patent employs dynamically deployable fastening elements that transition from a flat, low-profile state during packaging to a protruding, functional state during use. This dynamic transformation allows the fastener to be packaged in a thin, flat configuration that is easy to handle and store, while automatically assuming its functional three-dimensional shape when the substrate is stretched or deformed at the application site.

The fastening elements utilize the substrate's surface area efficiently by remaining flat or recessed during packaging (2D configuration), maximizing packaging density. Upon deployment through substrate deformation, they transition to a 3D protruding configuration that provides the necessary fastening function without increasing package thickness.

The patent changes the geometric parameters of the fastening elements from traditional protruding shapes to flat or recessed configurations that are formed directly from the substrate material. This parameter change eliminates the need for separate fastening element materials and reduces material waste, while the substrate deformation process ensures the elements achieve the necessary functional geometry for fastening.

The fastening elements are formed as an integral part of the substrate using the same material, creating a composite structure where the substrate serves dual functions as both the base material and the fastening element source. This eliminates material interfaces and reduces overall material consumption while maintaining fastening reliability.