Translucent Wood Sheet with Polyester Film for Illumination
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Solution Overview
Problem
Wood-based materials are limited in their use for illumination screens due to opacity and lack of flexibility, leading to brittleness and waste in manufacturing processes, as existing methods result in sheets that are not sufficiently flexible or durable for shaping into unique configurations while allowing light passage.
Innovation Solution
A method involving a high-quality, heat-activated crystal clear polyester film is applied to wood sheets, thermopressed between 80°C and 110°C, and then cold pressed to achieve a thickness of 0.6-0.8 mm, providing flexibility and strength, and eliminating the need for synthetic varnishes that cause brittleness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If wood sheets are made thinner to enable light passage, then translucency is improved, but strength and flexibility deteriorate causing brittleness and cracking
Solution Approach 1:
The patent applies a polyester film coating to the wood sheet surface, creating a composite structure that combines the translucency benefits of thin wood with the strength and flexibility of the polyester layer. This composite approach allows the wood sheet to be thin enough for light passage while the polyester reinforcement prevents brittleness and cracking.
Solution Approach 2:
The patent specifies precise thickness parameters (0.4-0.6mm) and polyester film thickness (0.05-0.1mm) to optimize the balance between translucency and mechanical strength. By controlling these dimensional parameters, the invention achieves the desired light transmission while maintaining sufficient strength and flexibility for shaping.
2Ease of operation
If wood sheets are made thinner to improve flexibility for shaping, then ease of operation is improved, but strength deteriorates leading to brittleness and waste
Solution Approach 1:
The polyester film coating creates a composite material that enhances flexibility for shaping while preventing the wood sheet from becoming brittle. The film acts as a protective layer that allows the thin wood sheet to be manipulated into complex shapes without cracking, resolving the contradiction between flexibility and strength.
Solution Approach 2:
By optimizing the wood sheet thickness to 0.4-0.6mm and applying a 0.05-0.1mm polyester film, the invention achieves the right balance between flexibility for shaping and structural strength. These parameter controls prevent brittleness while enabling ease of operation for creating illumination screens.
3Shape
If varnishes are applied to wood sheets to improve finish, then surface finish is improved, but reliability deteriorates causing brittleness and cracking over time
Solution Approach 1:
The patent replaces traditional varnishes with a polyester film coating that does not crack or become brittle over time. The polyester film provides a durable, flexible protective layer that maintains reliability while achieving the desired surface finish, eliminating the long-term durability problems associated with conventional varnishing.
Solution Approach 2:
The polyester film creates a composite structure where the film layer provides both the surface finish and the durability. This composite approach eliminates the harmful effects of traditional varnishes that cause brittleness, while the polyester film maintains flexibility and prevents cracking over time.
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 resulting translucent wood sheets are highly malleable, allowing for complex shapes and preventing cracking, while ensuring safe handling and efficient light passage, thus enabling aesthetically pleasing and functional illumination screens or panels.
Implementation Method 1
The polyester film is then thermopressed to the wood sheet by applying a temperature between 80oC and 110oC
Implementation Method 2
the use of a high-quality crystal clear polyester film, which is heat-activated for encapsulating the wood sheet
Data Source
Figure 1~2
AI summary
The invention relates to a method for producing a wood sheet that is between 0.6 and 0.8 mm thick, with both surfaces covered with a matte crystal clear polyester film that is between 70 and 80 micrometres thick joined by thermopressing to the wood sheet. The wood sheet is sanded between the method steps to a thickness ranging from 0.6 to 0.8 mm, a matte polyester film with a thickness ranging from 70 to 80 micrometres is applied, they are then thermopressed at a controlled temperature and speed, and the wood sheet covered with the plastic material film is cold-pressed. The present invention also relates to a translucent wood sheet which allows illumination lamps having unique configurations to be produced.