Over-Pigmentation Composition for Laser-Reactive Textile Marking
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Solution Overview
Problem
Textile materials dyed with certain pigments, such as pure indigo, are non-reactive to low-wavelength laser radiation, limiting the applicability of laser marking processes.
Innovation Solution
An over-pigmentation composition comprising over-pigments that absorb radiation in the range of 400 to 1,800 nm, specifically designed to be applied on textiles, allowing them to react to laser marking, and a method involving mixing, milling, and application of this composition to create a reactive marked area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If low-wavelength laser marking is used on textiles dyed with pure indigo, then cost and energy efficiency are improved, but the textile material becomes non-reactive to the laser radiation
Solution Approach 1:
An over-pigment composition is applied to the textile as an intermediary layer that absorbs laser radiation and transfers energy to the base pigment, enabling the marking process to work on previously non-reactive materials
Solution Approach 2:
The invention changes the optical parameters of the textile surface by applying an over-pigment layer with specific absorption characteristics, transforming the material from non-reactive to reactive at the laser wavelength
2Reliability
If CO2 gaseous state laser is used for marking, then the marking process can be performed, but acquisition costs and production costs increase
Solution Approach 1:
Instead of using expensive CO2 laser equipment, the invention uses a inexpensive over-pigment composition that enables the use of cheaper, more energy-efficient solid-state laser sources
Solution Approach 2:
The invention changes the optical properties of the textile surface to match the wavelength characteristics of cost-effective solid-state lasers, making them suitable for textile marking
3Reliability
If CO2 gaseous state laser is used for marking, then the marking process can be performed, but the space occupied in the plant increases
Solution Approach 1:
The invention replaces bulky CO2 laser systems with compact solid-state laser sources enabled by the over-pigment composition, reducing plant space requirements
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 effective laser marking of non-reactive textiles by absorbing laser radiation, improving the quality and durability of the finish while reducing fiber release during washing, and allowing easy removal of the over-pigment post-marking.
Implementation Method 1
the over-pigment must have a particle size of less than 10 micrometres. The use of a solution from this over-pigmentation composition on a textile material generates a stained zone in the material, wherein said zone is reactive, including the base pigment of a dyed textile, to radiation from a laser marker in the wavelength range between 400 and 1,800 nm
Implementation Method 2
applying laser radiation on at least one marking point of the stained area where the dilution has been applied, partially or totally removing both the over-pigmentation component and the base pigment
Implementation Method 3
a gaseous state laser, around 10,200 and 10,600 nm, which generates an ablation on the irradiated surface of the textile
Data Source
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Figure 5~7(d)
AI summary
The invention relates to a composition of over-pigmentation of a textile material, method of obtaining said composition, method of over-pigmentation of a textile material and textile product comprising an over-pigmented textile material, wherein the composition comprises: 300 - 550 grams of water, 100 - 200 grams of over-pigment, 250 - 350 grams of dispersing agent, 50 - 150 grams of glycol, and 5 - 15 grams of wetting agent, wherein the over-pigment is a pigment configured to absorb laser radiation in the range of 400 to 1,800 nm and has a particle size of less than 10 micrometres.