Resin Body Sublimation Dyeing With Pressure-Switched Fixation
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Solution Overview
Problem
Existing dyeing technologies face challenges in achieving stable dyeing due to sublimation of dyes during heating in a vacuum atmosphere and uneven temperature control when using electromagnetic waves, leading to inconsistent dye fixation on resin bodies.
Innovation Solution
A dyeing device with a closed chamber for pressure control, electromagnetic wave heating for uniform temperature distribution, and a distribution adjusting mechanism to optimize electromagnetic wave strength, ensuring stable dye vaporization and deposition followed by fixation under controlled pressure conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If heating is performed in a vacuum atmosphere to sublime and deposit dye on the resin body, then the dye can be vaporized and deposited, but the deposited dye is likely to sublimate again causing unstable dyeing
Solution Approach 1:
The patent applies periodic action by switching between vacuum and atmospheric pressure conditions in sequence. First, vacuum is applied to sublime and deposit the dye onto the resin body. Then, atmospheric pressure is restored to prevent re-sublimation during the heating fixation process. This periodic switching of pressure conditions resolves the contradiction between achieving dye deposition and preventing re-sublimation.
2Ease of operation
If electromagnetic wave is uniformly applied on the surface of a plate-shaped resin body, then the heating process is simplified, but temperature difference is caused between thick and thin parts leading to uneven heating
Solution Approach 1:
The patent applies local quality by making the electromagnetic wave irradiation intensity non-uniform across the resin body surface. The irradiation intensity is made inversely proportional to the local thickness, so that thinner parts receive stronger irradiation and thicker parts receive weaker irradiation. This compensates for the natural heating difference caused by thickness variation, achieving uniform temperature distribution while maintaining operational simplicity.
3Speed
If the resin body is heated by electromagnetic wave to fix the dye, then rapid heating is achieved, but it is difficult to control the temperature increase of each part due to shape influences
Solution Approach 1:
The patent applies dynamics by making the electromagnetic wave irradiation intensity adjustable and variable during the heating process. The system dynamically adjusts the irradiation intensity at different locations based on the resin body's shape and thickness distribution. This dynamic control enables both rapid heating and precise temperature control of each part, resolving the contradiction between heating speed and temperature control precision.
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 device enables stable and uniform dye fixation on resin bodies by controlling pressure and electromagnetic wave distribution, preventing re-sublimation and ensuring consistent dye quality.
Implementation Method 1
a closed chamber that closes at least the periphery of the resin body provided in the installing unit; pressure lowering means for lowering the pressure inside the closed chamber
Implementation Method 2
dye heating means for heating the dye adhered to the dyeing base; vaporization controlling means for vaporizing and depositing the dye on the resin body by heating the dye adhered to the dyeing base inside the closed chamber of which pressure is lowered
Implementation Method 3
resin body heating means for heating the resin body by electromagnetic wave; fixation controlling means for fixing the dye by irradiating the resin body on which the dye is vaporized and deposited with electromagnetic wave from the resin body heating means
Data Source
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AI summary
A dyeing device dyes a resin body by vaporizing and depositing a sublimation dye adhered to a dyeing base to a resin body provided in an installing unit and fixing the dye to the resin body. The dyeing device lowers the pressure inside a closed chamber that closes the periphery of the resin body by a pump (S27). In the state where the adhesion surface of the dyeing base to which the dye is adhered faces the resin body without contact, by heating the dye adhered to the dyeing base inside the closed chamber of which the pressure is lowered, the dye is sublimated, vaporized, and deposited on the resin body (S28). The pressure inside the closed chamber is raised higher than the pressure at the vaporizing and depositing time (S30). By irradiating the resin body on which the dye is vaporized and deposited with electromagnetic wave, the resin body is heated and the dye is and fixed (S36).