Composite Light Diffusing Panel Fabric Wrinkle Prevention
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Solution Overview
Problem
Light diffusing panels with glass and fabric combinations experience fabric wrinkling and instability due to manufacturing, transportation, and thermal stresses, affecting aesthetics and transmissive properties, especially in larger units or under direct sunlight.
Innovation Solution
Applying a light transmissive adhesive with a density between 0.05 and 2 g/sq.ft to the fabric or glass lites, followed by firm application and curing to prevent wrinkling, using water-based acrylic pressure sensitive adhesives or UV-cure resins, and employing roll lamination to maintain light diffusion properties and aesthetic appeal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If fabric is applied to glass lites without adhesive bonding, then the product maintains light-diffusing properties and aesthetic appeal, but the fabric becomes unstable and wrinkles under manufacturing, transportation, and thermal stresses
Solution Approach 1:
The adhesive is applied to the fabric or glass surface before assembly, creating preliminary bonding that prevents fabric movement and wrinkling during subsequent manufacturing, transportation, and installation processes. This preliminary action secures the fabric in its proper position before any stresses are applied.
Solution Approach 2:
A light-transmissive adhesive serves as an intermediary substance between the fabric and glass lites, providing bonding strength while maintaining the light-diffusing optical properties. The adhesive mediates between the need for mechanical stability and the requirement for aesthetic appearance.
2Stability of the object's composition
If adhesive is applied to bond fabric to glass lites, then fabric stability and anti-wrinkling are improved, but the adhesive layer may become visible and affect aesthetic appearance
Solution Approach 1:
The adhesive is selected and applied with specific optical properties (transparency, refractive index matching) that allow it to become visually imperceptible when cured. The adhesive's optical characteristics are matched to the surrounding glass and fabric to eliminate visible boundaries or color differences.
Solution Approach 2:
The adhesive properties are carefully controlled including application density (0.05-2 g/sq.ft), curing method, and material composition to achieve optimal balance between bonding strength and visual invisibility. Parameters such as adhesive thickness and refractive index are optimized to minimize visibility.
3Stability of the object's composition
If high density adhesive is applied to ensure strong bonding, then fabric stability is improved, but the adhesive becomes more visible and light diffusion properties are reduced
Solution Approach 1:
The adhesive application density is precisely controlled within the range of 0.05-2 g/sq.ft to achieve the minimum necessary bonding strength while maintaining optical transparency. This parameter optimization ensures sufficient fabric stability without creating visible adhesive layers that would block light diffusion.
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 method effectively bonds the fabric to glass without visible adhesive layers, preventing wrinkling and maintaining light diffusion properties, while allowing for aesthetic enhancements and simplifying manufacturing by ensuring stable fabric placement and appearance.
Implementation Method 1
applying a light transmissive adhesive to said layer of fabric or said at least one lite... curing said adhesive to bond said fabric to said at least one lite
Implementation Method 2
using water-based acrylic pressure sensitive adhesives or UV-cure resins
Data Source
AI summary
A method of making a composite light diffusing panel including at least spaced apart lites with a fabric layer applied to an inner surface of at least one of said lites, involves applying a transparent adhesive to the layer of fabric or the lite(s), firmly applying the layer of fabric onto the lite(s) to avoid wrinkling fabric, curing the adhesive to bond the fabric to the lite(s), and assembling the lites to form the light diffusing panel. In this way, a functionally useful product can be obtained that does not suffer from wrinkling and other distracting effects.