Painting Panel Grid Framework with Neutral Paper Layers
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Solution Overview
Problem
Wooden frames used in traditional canvas stretching for oil paintings often deform over time, leading to impaired planarity and damage to the paint layer, which affects the quality and value of the artwork.
Innovation Solution
A painting panel with a grid framework made from cedar, Japanese cypress, or other hardwoods, combined with multiple layers of neutral Japanese paper, which provides stability and maintains planarity by avoiding resin contamination and allowing for air permeability, thus preventing warping and deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a wooden frame is used to stretch and secure the canvas, then the canvas can be stretched and secured, but the wooden frame deforms due to aging and the planarity of the canvas is impaired
Solution Approach 1:
The patent removes the wooden frame from the painting support structure and replaces it with a grid framework made of metal rods. This extraction eliminates the source of deformation (wooden frame aging) while maintaining the essential function of supporting and stretching the canvas through the metal grid structure.
Solution Approach 2:
The patent changes the material parameter of the framework from wood to metal (specifically aluminum alloy or stainless steel). This parameter change provides dimensional stability and resistance to deformation, solving the reliability issue of wooden frames while maintaining structural support functionality.
2Strength
If a wooden frame is used to stretch and secure the canvas, then the canvas can be stretched and secured, but the paint layer is damaged
Solution Approach 1:
The patent introduces multiple protective layers (honeshibari layer, doubari layer, minobari layer, minoshibari layer, shitabukuro layer, uwabukuro layer, and kyoubari layer) as intermediaries between the grid framework and the canvas. These layers prevent direct contact and potential damage to the paint layer while maintaining the structural support function.
Solution Approach 2:
The patent uses a composite structure combining metal grid framework with multiple paper layers (honeshibari, doubari, minobari, minoshibari, shitabukuro, uwabukuro, kyoubari). This composite material system provides both structural strength and protection against paint layer damage.
3Duration of action of stationary object
If traditional wooden frame stretching is used, then the canvas can be secured, but aging occurs frequently in wooden frames
Solution Approach 1:
The patent changes the material parameter from organic wood to inorganic metal (aluminum alloy or stainless steel), which fundamentally improves resistance to aging, rot, and insect damage. This parameter change extends the service life of the support structure significantly.
Solution Approach 2:
The patent uses aluminum alloy or stainless steel which, while initially more expensive than wood, eliminates the need for frequent replacement due to aging. The long-term cost effectiveness comes from the extended service life and elimination of maintenance.
Data Source
AI summary
A painting panels capable of maintaining planarity of a canvas without being subject to an aging, which may happen often in wooden frames is provided. A painting panel in which a covering member including a plurality of layers made of neutral paper is stretched and secured over an outer surface of a grid framework formed by assembling squared bars made of at least one selected from cedar, Japanese cypress, Maki, paulownia, ash, beech, zelkova, oak, cherry, and teak into a grid shape.