Multilayered Sun-Blocking Sheet with Titanium Oxide Resin
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Solution Overview
Problem
Conventional sun-blocking materials for parasols and tents fail to effectively block ultraviolet and infrared rays, and achieve sufficient cooling, with existing solutions either lacking in light-blocking efficacy or being impractical for widespread use.
Innovation Solution
A multilayered sheet comprising a top textile layer and middle and bottom synthetic resin film layers, where the middle layer contains 10-70% titanium oxide and the bottom layer contains 5-40% carbon black, enhancing light-blocking and cooling effects through a high-density woven fabric structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a high density woven textile dyed black is used for parasols, then the visible light blocking is improved, but the ultraviolet and infrared ray blocking is insufficient
Solution Approach 1:
The patent applies composite materials by combining multiple functional layers: a resin layer containing titanium oxide and black pigment for UV and IR blocking, and a woven textile layer for structural support and visible light blocking. This composite structure achieves comprehensive sun blocking across all spectral ranges that single materials cannot accomplish alone.
Solution Approach 2:
The patent applies local quality by assigning different functional properties to different layers: the resin layer specifically targets UV and infrared radiation with titanium oxide particles, while the textile layer handles visible light blocking and provides mechanical strength. Each layer is optimized for its specific function rather than using a single material for all purposes.
2Manufacturing precision
If the coating material contains additives to maintain coating characteristics, then the coating quality is improved, but the thickness is limited and cannot block ultraviolet and infrared rays entirely
Solution Approach 1:
The patent overcomes the thickness limitation by creating a composite structure where the resin layer containing titanium oxide and black pigment works synergistically with the woven textile layer. This multi-layer composite achieves complete UV and IR blocking without requiring excessive coating thickness, maintaining both coating quality and blocking effectiveness.
Solution Approach 2:
The patent optimizes the composition parameters of the resin layer, specifically controlling the titanium oxide content at 10-70 mass% and black pigment at 5-40 mass%, to achieve optimal blocking performance. By adjusting these compositional parameters within specific ranges, the patent achieves effective UV and IR blocking while maintaining proper coating characteristics and avoiding excessive thickness.
3Illumination intensity
If the back side of parasol cloth is made dark-colored, then the visible light absorption is improved, but ultraviolet and infrared rays cannot be cut off entirely
Solution Approach 1:
The patent applies composite materials with a resin layer containing titanium oxide and black pigment combined with a woven textile layer. The resin layer specifically targets UV and infrared radiation while the dark-colored textile layer handles visible light absorption, achieving comprehensive blocking that single-layer dark cloth cannot accomplish.
4Ease of operation
If a cloth is used to block sunlight, then the portability and flexibility are improved, but the sunlight cannot be blocked by 100% substantively
Solution Approach 1:
The patent achieves near-100% sunlight blocking while maintaining cloth flexibility through composite materials: a resin layer with titanium oxide and black pigment for spectral blocking, combined with a woven textile layer for mechanical properties. This composite structure achieves comprehensive blocking that single-layer cloths cannot accomplish while preserving the portability and flexibility needed for parasol applications.
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 multilayered sheet achieves a high light-blocking rate of 95% or more and ultraviolet ray-shielding rate of 95% or more, along with a cooling effect of 30°C or less, providing an excellent sunlight-blocking and cooling performance for applications like parasols, tents, and tarps.
Implementation Method 1
a middle layer comprises a first synthetic resin film that contains a titanium oxide of 10 mass% or more and 70 mass% or less
Implementation Method 2
a middle layer comprises a first synthetic resin film that contains a titanium oxide of 10 mass% or more and 70 mass% or less
Implementation Method 3
a bottom face layer comprises a second synthetic resin film that contains carbon black
Data Source
Figure 1~2
AI summary
This invention addresses the problem of eliminating the shortcomings of existing sun-blocking materials and providing a sun-blocking multilayered sheet that is highly suitable as a sun-blocking material that exhibits excellent light-blocking effect and an excellent cooling effect. In order to solve said problem, this invention provides a sun-blocking multilayered sheet that comprises at least one layer of synthetic resin film and at least one layer of textile, said synthetic resin film containing between 10% and 70% titanium oxide by mass, inclusive. A textile comprising synthetic fibers that contain between 0.1% and 10% titanium oxide by mass, inclusive, may be used as the aforementioned textile.