Method for producing printed product and printing system
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Solution Overview
Problem
Conventional methods for producing printed products using crosslinkable binders result in insufficient friction fastness and texture deterioration due to inadequate curing, often leading to scorching when increasing binder amounts or heating temperatures.
Innovation Solution
A method involving inkjet printing of a colorant and crosslinkable binder onto a textile, followed by heat-treatment with steam to melt and crosslink the binder, ensuring sufficient curing without direct contact with a heat source, thereby enhancing friction fastness and texture while preventing scorching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the amount of crosslinkable binder component is increased to improve friction fastness, then the friction fastness is improved, but the printed product becomes hard and texture is deteriorated
Solution Approach 1:
The invention changes the heating parameters from direct contact heating to steam atmosphere heating, which allows sufficient crosslinking reaction at lower temperatures (100-200°C) for longer durations, thereby achieving good friction fastness without excessive binder content that would harden the textile
Solution Approach 2:
Steam is introduced as an intermediary heating medium between the heat source and the printed product. The steam atmosphere provides uniform indirect heating that enables complete crosslinking of the binder component without direct thermal contact, preventing texture deterioration while ensuring adequate friction fastness
2Reliability
If the temperature of heater is raised and heating time is prolonged to improve crosslinking reaction, then the crosslinking reaction is improved, but scorching of the printed product occurs
Solution Approach 1:
Steam serves as an intermediary that transfers thermal energy indirectly to the printed product. This prevents localized overheating and scorching while maintaining sufficient overall temperature for crosslinking reaction completion throughout the textile material
Solution Approach 2:
The steam atmosphere creates a controlled heating environment that prevents oxidative scorching and provides uniform heat distribution. The saturated steam environment ensures consistent temperature control that avoids hot spots and prevents burning of the textile and binder components
3Productivity
If direct contact heating is used to speed up the heating process, then the heating efficiency is improved, but the texture of the printed product is deteriorated
Solution Approach 1:
Steam atmosphere heating provides efficient heat transfer through convection and condensation mechanisms while maintaining indirect contact. This achieves rapid and uniform heating throughout the textile without the localized pressure and heat concentration that causes texture deterioration in direct contact methods
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 produces printed products with improved friction fastness and texture retention, extending the lifespan of the ink and maintaining environmental friendliness by using a water-based ink composition and reducing the amount of crosslinkable binder required.
Implementation Method 1
a heat-treatment step in which, by heat-treatment of the print body with steam, the crosslinkable binder component is caused to melt or soften, and to crosslink to be a film
Implementation Method 2
the crosslinkable binder component is caused to melt or soften, and to crosslink to be a film, thereby fixing the colorant to fibers of the textile good
Implementation Method 3
heating the print body via the steam without contacting the print body directly to a heat source
Implementation Method 4
by heat-treatment of the print body with steam... without contacting the heater directly to the textile
Data Source
AI summary
A method for producing a printed product is provided. The method capable of producing the printed product is superior in a friction fastness and a texture. And, a printing system is also provided. The method includes a printing step in which an ink composition for inkjet, containing a colorant and a crosslinkable binder component, is inkjet-printed onto a textile good to obtain a print body; and a heat-treatment step in which, by heat-treatment of the print body with steam, the crosslinkable binder component is caused to melt or soften, and to crosslink to be a film, thereby fixing the colorant to fibers of the textile good. The printing system includes a printing apparatus and a heat-treatment equipment with which a print body after printing is heat-treated with steam.