Revolved Coating for Uniform Flat and Chamfered Edge Thickness
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Solution Overview
Problem
Existing methods struggle to apply a coating substance uniformly to both flat and chamfered edge portions of target objects, such as protective glass, with a predetermined thickness.
Innovation Solution
A method involving a coating apparatus that includes a coating device, UV irradiator, revolution plate, and controller, where the target object is revolved about a revolution axis parallel to its flat surface to spread the coating substance using centrifugal force, followed by UV irradiation to increase viscosity and adjust the coating thickness on edge surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the spin-coating method is used to apply coating substance to the substrate, then the coating substance can be applied to the flat face portion, but the coating substance cannot be applied with predetermined thickness to the chamfered edge portions
Solution Approach 1:
The coating process is divided into two distinct stages: first, the coating substance is applied to the flat face portion using spin-coating; second, the target object is revolved about a revolution axis to distribute the coating substance to the edge face portions. This segmentation allows each stage to be optimized independently, achieving uniform coating thickness on both flat and chamfered surfaces.
Solution Approach 2:
The invention introduces a new dimension to the coating process by revolving the target object about a revolution axis that is parallel to the flat face portion but separated by a predetermined distance. This three-dimensional motion enables the coating substance to be distributed uniformly across the edge face portions, which cannot be achieved with conventional two-dimensional spin-coating alone.
2Manufacturing precision
If the coating substance is applied to cover both flat and edge portions, then complete coverage is achieved, but coating substance waste increases due to difficulty in controlling thickness on edge portions
Solution Approach 1:
The invention implements feedback control by revolving the target object about a revolution axis at a controlled speed while applying the coating substance. The revolution speed and coating substance supply rate are adjusted to maintain a predetermined coating thickness on the edge face portions, preventing both under-coating and excessive material waste.
Solution Approach 2:
The invention changes the physical parameters of the coating process by introducing revolution about an axis parallel to the flat face portion. This parameter change enables the coating substance to be distributed uniformly across the edge face portions through centrifugal force, achieving precise thickness control and reducing material waste compared to conventional methods.
3Manufacturing precision
If conventional coating methods are used, then the process is simple, but the coating substance cannot be uniformly distributed on chamfered edge surfaces
Solution Approach 1:
The coating apparatus is designed with multi-functionality: the same revolution mechanism that distributes coating substance to edge portions can also be used to control coating thickness on flat surfaces. The revolution axis configuration allows the apparatus to handle both flat face portions and chamfered edge portions uniformly, eliminating the need for separate coating mechanisms.
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
Enables uniform application of the coating substance with a predetermined thickness on both flat and chamfered edge portions, reducing waste and ensuring a stable film formation.
Implementation Method 1
spreading the coating substance by revolving the target object about a revolution axis
Implementation Method 2
UV irradiation to increase viscosity and adjust the coating thickness on edge surfaces
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3
AI summary
Provided is a method which is for manufacturing an object coated with a coating substance, and which enables, in addition to a flat part, an end surface part to be covered with a prescribed thickness of a coating substance. This method is for manufacturing an object coated with a coating substance R, said object being obtained from an object T to be coated having a flat part Tf which has formed therein a coating plane that is a flat surface and an end surface part Te which is contiguous to the flat part Tf and which has formed therein a coating end surface having a curved surface and/or a flat surface not parallel to the coating plane of the flat part Tf, said object having the coating plane and the coating end surface coated with the coating substance R. The method comprises: a coating substance supplying step for supplying the coating substance R at least along the coating plane; and an end surface part coating substance adjusting step for adjusting the coating substance R supplied to the coated end surface or the coating substance R migrated from the coating plane so as to cover the coating end surface with a prescribed thickness toward a direction away from the coating plane.