Roofing Membrane Fabric Edge Structure for Leak-Safe Alignment
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Solution Overview
Problem
Existing roofing membranes face issues with edge alignment and leakage due to loose edges and uneven waterproofing layers, which compromise durability and longevity, despite improvements in the waterproofing layer, the fabric frame lacks necessary performance.
Innovation Solution
A fabric for roofing membranes is developed with warp and weft yarns woven in specific patterns, incorporating ground yarns in a zigzag form and low-melting finishing yarns that are ultrasonically melted and fixed to create rigid edges, allowing for precise cutting and improved coupling forces, enhancing manufacturability and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the protruding weft yarn is cut after weaving, then the edge can be trimmed, but the warp and weft yarns become loose and the edge becomes coarse again
Solution Approach 1:
The patent applies preliminary action by forming loops with the weft yarn at the edge portions before the cutting process. These loops are created in advance during weaving, so when the excess yarn is cut, the loops remain intact and prevent the warp and weft yarns from becoming loose, thereby maintaining edge linearity and preventing coarsening.
2Reliability
If the fabric edges are not properly stabilized, then the manufacturing process is simpler, but the connected portions between roofing membranes are misaligned causing leakage
Solution Approach 1:
The patent applies preliminary action by forming loops with the weft yarn at the edge portions before the cutting process. These loops are created in advance during weaving, so when the excess yarn is cut, the loops remain intact and prevent the warp and weft yarns from becoming loose, thereby maintaining edge linearity and preventing coarsening.
Solution Approach 2:
The patent applies local quality by creating a distinct loop structure specifically at the edge portions of the fabric, while the rest of the fabric maintains its normal weave structure. This localized modification provides the necessary edge stability and linearity for proper alignment during roofing membrane installation, without complicating the overall fabric structure.
3Duration of action of stationary object
If the fabric structure is improved to provide high durability, then the lifespan increases, but the manufacturing complexity increases
Solution Approach 1:
The patent applies preliminary action by forming loops with the weft yarn at the edge portions before the cutting process. These loops are created in advance during weaving, so when the excess yarn is cut, the loops remain intact and prevent the warp and weft yarns from becoming loose, thereby maintaining edge linearity and preventing coarsening.
Solution Approach 2:
The patent applies local quality by creating a distinct loop structure specifically at the edge portions of the fabric, while the rest of the fabric maintains its normal weave structure. This localized modification provides the necessary edge stability and linearity for proper alignment during roofing membrane installation, without complicating the overall fabric structure.
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 strengthens tissue coupling forces, improves manufacturability, and ensures a longer lifespan by providing a rigid and uniform edge connection, optimizing waterproofing and resistance to pollution, weather, and antimicrobial factors.
Implementation Method 1
the finishing yarns are melted by means of ultrasonic waves and are fixedly attached to the warp and weft yarns
Implementation Method 2
the finishing yarns are melted by means of ultrasonic waves
Data Source
AI summary
Disclosed is a fabric for a roofing membrane adapted to waterproof a roof of a building, the fabric including: warp and weft yarns laid on each other on the front and back sides thereof in such a manner as to have numbers and lengths corresponding to an area of the fabric; ground yarns wound around one side warp yarn and the other side warp yarn in a zigzag form in such a manner as to interlace the weft yarn; and finishing yarns arranged on edges thereof to allow the ground yarns to be arranged therebetween, upper loops and lower loops being formed alternately on the warp yarns where the ground yarns, the finishing yarns, or the ground yarn and the finishing yarn are laid on each other.