Woven Pool Cover Fabric Geometric Pattern Water Flow Shade
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Solution Overview
Problem
Woven pool cover fabrics face a challenge in achieving both high water flow rates and high shade coverage, as increasing water flow typically results in decreased shade coverage due to the inherent openings in the fabric.
Innovation Solution
The development of a woven pool cover fabric with a repeating geometric pattern, featuring alternating first and second geometric shapes in the warp and fill directions, which maintains a high water flow rate of 10-200 gallons/minute per square foot while achieving shade coverage of 80-99%.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the fabric is made with tighter weaving to increase shade coverage, then shade coverage is improved, but water flow rate deteriorates
Solution Approach 1:
The fabric is divided into alternating light and dark geometric patterns (such as light squares on dark background or vice versa) that create distinct zones of different weave densities. This segmentation allows different regions to serve different functions: dark areas provide shade coverage while light areas maintain water flow pathways, resolving the contradiction between shade coverage and water flow rate
Solution Approach 2:
Different regions of the fabric are given different local properties through the geometric pattern design. The dark geometric shapes have tighter weaving for shade coverage, while the light geometric shapes have more open weaving for water flow. This local differentiation allows the fabric to simultaneously achieve both high shade coverage and adequate water flow rate
Data Source
AI summary
A woven pool cover fabric that includes a repeating geometric pattern with a plurality of first lines in a warp direction and plurality of second lines in a fill direction that cross one another to form a plurality of repeating geometric shapes. The plurality of geometric shapes being a first geometric shape and a second geometric shape that alternate across each of the first lines and second lines. The woven pool cover fabric further includes a water flow rate of about 10 gallons/minute per square foot to about 200 gallons/minute per square foot as measured by ASTM D4491 test method, and has a shade coverage of about 80% to about 99%.