Hook Tape Material Back Surface Structuring for Winding Stability
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Solution Overview
Problem
Hook tape materials used in mechanical closure systems face issues with stability when wound onto spools or rolls, particularly at higher speeds, leading to telescoping and tangling, which complicates processing and increases production losses.
Innovation Solution
Incorporating static friction increasing means on the back of the film carrier, such as structured surfaces or periodic patterns, to enhance the stability of the hook tape material in a wound state, allowing for higher winding and unwinding speeds without compromising the interlocking properties of the projection elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the hook tape material is made narrow and light, then the weight and width are reduced, but the stability during winding and unwinding deteriorates
Solution Approach 1:
The invention applies a structured surface specifically on the back side of the film carrier, creating local structural variation without affecting the overall narrow and light design. This localized structuring provides enhanced friction and stability during winding operations while maintaining the material's lightweight characteristics
2Productivity
If the winding speed is increased, then the productivity is improved, but the stability of the wound material deteriorates due to centrifugal force
Solution Approach 1:
The invention changes the surface parameters of the film carrier by introducing a structured surface with varying friction characteristics. This parameter modification allows the material to maintain stability at higher winding speeds by increasing the friction between layers, counteracting the destabilizing centrifugal forces
3Weight of moving object
If the hook tape material is made thin, then the weight is reduced, but the interlocking stability deteriorates
Solution Approach 1:
The invention creates a composite structure by combining the smooth front side (for hook interlocking) with the structured back side (for winding stability). This composite approach allows the thin material to maintain both lightweight properties and sufficient interlocking stability through the dual-surface design
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively stabilizes the hook tape material during winding and unwinding, reducing the risk of telescoping and tangling, and enables more efficient processing by maintaining the integrity of the material's interlocking properties.
Implementation Method 1
static friction increasing means are arranged on the back side of the film carrier
Data Source
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AI summary
In order to ensure that a hook tape material or a corresponding hook tape material roll and a corresponding hook tape material spool are reliably available in a wound state, the back of the hook tape material is adapted so that this back has a stabilizing effect in the wound state.