Cable Jacket Variable Perimeter Bond via Disposable Release Paper
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods for manufacturing armored fiber optic cables face challenges in easily accessing the optical fibers due to strong bonding between the armor and the cable jacket, which is messy, expensive, and difficult to manage with intermediate glue layers.
Innovation Solution
The method involves applying particulate matter to the armor to create regions with varying bond strengths, allowing for easier access by facilitating cohesive failure in specific areas while maintaining strong bonds for stability, eliminating the need for intermediate glue layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an intermediate glue layer is applied to the armor surface to prevent strong bonding, then the jacket can be separated from the armor, but the bond strength becomes difficult to control and the manufacturing process becomes complex and messy
Solution Approach 1:
The patent uses a disposable release paper applied to the armor surface that prevents bonding only where needed. The release paper is a simple, inexpensive, single-use element that eliminates the need for complex heated conduit systems and glue application equipment. After serving its purpose of preventing bonding during extrusion, the release paper remains as a thin layer that facilitates clean separation.
Solution Approach 2:
The release paper acts as an intermediary layer between the armor and the jacket material. This simple intermediate element mediates the bonding interaction by providing a surface that the thermoplastic material cannot bond to strongly, while still allowing the jacket to be applied properly. The intermediary is much simpler than the previously used heated glue conduit system.
2Manufacturing precision
If glue is heated and routed through sealed conduit to prevent solidification, then bonding can be controlled, but manufacturing equipment complexity and maintenance requirements increase
Solution Approach 1:
The patent extracts the bonding control function from the complex heated conduit system and concentrates it into a simple release paper element. Instead of using a sophisticated system to heat and route glue through sealed conduits, the invention removes the need for such complex equipment by using a passive release paper that provides bonding control through its material properties alone.
Solution Approach 2:
The release paper is a inexpensive, single-use component that replaces the expensive, complex, and maintenance-intensive heated conduit system. The release paper requires no heating, no sealing, and no active control systems - it simply functions as a bonding prevention layer during extrusion and then facilitates clean separation.
3Strength
If a strong bond is formed between armor and jacket, then cable stability and strength are improved, but access to optical fibers becomes difficult and requires breaching the armor
Solution Approach 1:
The release paper is applied selectively to specific regions of the armor surface, creating local variations in bonding characteristics. By controlling where the release paper is placed, the invention creates zones of weak bonding (where release paper is present) and zones of strong bonding (where release paper is absent). This allows the cable to have overall structural strength while providing specific access points where the jacket can be easily separated from the armor.
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 approach reduces the force required to separate the cable jacket from the armor, simplifies the manufacturing process, and enhances the mechanical properties of the cable by controlling the bonding between the armor and the jacket.
Implementation Method 1
an intermediate liquid layer such as glue is applied to the armor coating before extruding the jacket over the armor. The glue is applied to form a release layer that prevents a strong thermoplastic bond from forming between the armor coating and the jacket
Implementation Method 2
removal of the covering is facilitated by cohesive failure of the particulate matter when the covering is pulled from the armor
Data Source
AI summary
The bond between an armor and a cable covering jacket is controlled by introducing intervening material at the interface of the layers along selected bond regions. The intervening material can comprise particulate matter or a strip of material introduced at selected locations of the armor perimeter to allow ease of access at the selected regions.