Permeable Fabric Printing Ink for Density and Fastness
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional ink jet printing methods using pigment ink on permeable fabrics, such as cotton and carpets, face issues with low print density and fastness due to ink permeation and smearing, leading to inadequate quality and durability of printed fabrics.
Innovation Solution
A method involving an ink composition with a pigment, a binder resin, and a dye that fixes the pigment and causes the fabric to develop color, combined with a viscosity increasing process and heat treatment to enhance ink adhesion and fabric coloration, ensuring higher print density and fastness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the amount of pigment ink is increased to enhance print density, then the print density improves, but the smearing of the pigment ink increases and printing quality deteriorates
Solution Approach 1:
The patent changes the chemical composition parameters of the ink by incorporating a specific binder resin and controlling the ratio of pigment to binder resin. This allows the ink to achieve adequate adhesion at lower concentrations, preventing smearing while maintaining print density through optimized formulation rather than increased quantity
Solution Approach 2:
The patent creates a composite ink formulation combining pigment particles with a specifically selected binder resin. This composite structure allows the pigment to adhere firmly to the fabric at lower ink quantities, achieving both high print density and reduced smearing through the synergistic interaction between pigment and binder
2Strength
If pigment ink is used for printing on permeable fabric, then the ink adheres to the fabric surface, but the ink permeates into the fabric mesh and print density decreases
Solution Approach 1:
The patent modifies the rheological and adhesive parameters of the ink by selecting a binder resin with specific molecular weight and functional groups. This allows the ink to maintain surface adhesion while controlling permeation rate, achieving both strong attachment and sufficient surface coverage for high print density
Solution Approach 2:
The binder resin acts as an intermediary substance between the pigment particles and the fabric. It provides a bonding interface that secures pigment to the fabric surface while its viscosity and molecular structure control the rate and extent of ink permeation into the fabric mesh, balancing adhesion and surface coverage
3Productivity
If pigment ink is used without pre-processing, then the printing process is simplified and time is reduced, but the fastness to friction and moisture is insufficient
Solution Approach 1:
The binder resin in the patent provides self-service functionality by inherently providing both adhesion and fastness properties without requiring external pre-treatment agents. The resin's chemical structure enables it to bond pigment to fabric and simultaneously provide resistance to friction and moisture, eliminating the need for separate pre-processing steps while ensuring durability
Solution Approach 2:
The patent creates a multifunctional composite ink system where the binder resin combines adhesion and fastness functions in a single material. This composite formulation integrates the properties needed for both rapid processing and durable results, achieving high fastness to friction and moisture without requiring additional pre-processing agents or steps
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 method improves print density and fastness on permeable fabrics by ensuring the ink adheres and penetrates evenly, reducing smearing and maintaining quality under friction and moisture, thus enhancing the overall printing quality and durability.
Implementation Method 1
a binder resin that fixes the pigment to the permeable medium by being heated
Implementation Method 2
a dye that causes the permeable medium itself to develop color by being heated
Implementation Method 3
a part of the pigment ink permeates into the mesh configuring the fabric
Data Source
AI summary
There is provided a printed medium manufacturing method for manufacturing a printed medium by performing printing with ink with respect to a permeable medium, which is a recording medium that permeates the ink, the method including an ink attaching process of attaching the ink to the permeable medium, a pigment fixing process of fixing a pigment in the ink to the permeable medium with a binder resin in the ink by heating the ink attached to the permeable medium in the ink attaching process, and a dye color developing process of causing the permeable medium itself to develop color with the dye in the ink by heating the ink attached to the permeable medium in the ink attaching process.