Helical Cable Wrapping With Pre-Stretched Adhesive Tape
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Solution Overview
Problem
Existing adhesive tapes for wrapping elongated goods, such as cable sets, are limited by their length and width, making them difficult to handle and inefficient for applications where partial encasement is sufficient, particularly in automated processes.
Innovation Solution
Applying a longitudinal tensile stress to the adhesive tape before wrapping, causing irreversible elongation, allowing the tape to be guided in a helical path around the elongated material and fixed in its lengthened state, thereby increasing its length and reducing its width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If adhesive tape is wound onto a core in conventional manner, then the tape is available for use, but the length of tape that can be wound is limited by the roll diameter and handling difficulty
Solution Approach 1:
The adhesive tape is pre-stretched to 1.5-3 times its original length before winding onto the core. This preliminary action allows a much longer tape to be wound on the same core diameter, and when applied, the tape contracts to provide the extended length needed without requiring an excessively large roll.
Solution Approach 2:
The physical state of the adhesive tape is changed by applying tensile stress to stretch it before winding. This parameter change (from relaxed to stretched state) allows the tape to occupy less space during storage while providing greater effective length during application.
2Length of moving object
If adhesive tape is stretched to increase length, then the tape becomes narrower, but the width reduction may be undesirable for some applications
Solution Approach 1:
The tape is stretched before application, and this stretching action is performed as part of the application process itself. The tape is fed in a stretched state and contracts upon contact with the workpiece, ensuring both length extension and width reduction occur at the optimal moment.
Solution Approach 2:
The tape transitions from a stretched state during feeding to a contracted state during application. This dynamic state change allows the system to exploit both the length extension benefit and accept the width reduction, as the width contraction occurs only when needed for the specific application geometry.
3Length of moving object
If adhesive tape is wound with larger diameter roll to increase length, then more tape is available, but the roll becomes heavier and more difficult to handle
Solution Approach 1:
The tape is pre-stretched to 1.5-3 times its original length before winding. This parameter change allows a much longer tape to be wound on a compact core, dramatically reducing the roll diameter and weight while still providing the required tape length for the application.
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
This method enables the adhesive tape to achieve significantly greater length without increasing the roll diameter, facilitating efficient and cost-effective wrapping with narrower widths that are difficult to achieve with conventional tapes.
Implementation Method 1
Applying a longitudinal tensile stress to the adhesive tape (2) before it is applied to the elongated material, thereby lengthening the adhesive tape (2) in its lengthened state
Implementation Method 2
an adhesive tape is provided comprising a textile carrier and an adhesive compound applied to at least one side of the carrier
Data Source
Figure 1
Figure 2~4
Figure 5~6
AI summary
The invention relates to a method for sheathing elongated goods, such as cable sets in particular, wherein in the method an adhesive tape is provided comprising a textile carrier and an adhesive compound applied to at least one side of the carrier, and the elongated goods are sheathed with the adhesive tape, wherein a tensile stress in the longitudinal direction is applied to the adhesive tape before it is applied to the elongated goods, by which the adhesive tape is lengthened so that in the lengthened state it is guided in a helical line around the elongated goods and is fixed on them in the lengthened state.