Coated Transfer Paper for Hybrid Textile Printing Adhesion

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Solution Overview

Problem

Current textile printing technologies face challenges in achieving high-definition, durable, and cost-effective prints on various substrates, particularly with regards to adhesion, color migration, and compatibility with both screen and digital printing methods.

Innovation Solution

A coated transfer paper is developed, featuring a specific coating layer with water-soluble polymers, suspended solids, and thermoplastic polymers, which allows for the combination of screen printing and digital printing techniques. This paper receives digital printing inks while maintaining high tonal fidelity and transfers images effectively onto substrates without adhering to areas without a receiving base.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If digital printing is used directly on textile substrates, then customized designs and flexibility are improved, but adhesion and durability on various substrates deteriorate

Engineering Contradiction:

Improvecustomized designs flexibilityVSAvoidadhesion durability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

A transfer paper acts as an intermediary carrier between digital printing and textile substrate. The paper receives digital printing with proper adhesion, then transfers the printed image to the textile substrate through heat and pressure, ensuring both adhesion reliability and design flexibility are maintained

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The printing process is segmented into two distinct stages: first printing on transfer paper, then transferring to substrate. This separation allows optimization of each stage independently - digital printing on paper ensures good adhesion, while the transfer process ensures durability on the final textile substrate

Inventive Principle:

Principle #1Segmentation

2Reliability

If screen printing is used for textile printing, then adhesion and texture effects are improved, but definition and color fidelity deteriorate

Engineering Contradiction:

Improveadhesion texture effectsVSAvoiddefinition color fidelity

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The invention merges screen printing and digital printing techniques in a hybrid process. Screen printing applies the receiving base ink to create adhesion and texture, while digital printing applies the image on transfer paper for high definition and color fidelity. The combination achieves both adhesion reliability and manufacturing precision

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If transfer processes are used for indirect printing on textiles, then customized designs are improved, but color migration on dark backgrounds deteriorates

Engineering Contradiction:

Improvecustomized designsVSAvoidcolor migration

Core Design Contradiction:

Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The patent converts the potential harm of color migration into a benefit by using the screen-printed receiving base ink as an anchoring layer. This layer prevents ink migration on dark backgrounds while still allowing the digital printing transfer process to work effectively for customized designs

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

4Reliability

If multiple printing layers are applied to achieve durability, then adhesion and fastness are improved, but process complexity and production time deteriorate

Engineering Contradiction:

Improveadhesion fastnessVSAvoidprocess complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The screen printing of receiving base ink is performed as a preliminary action before digital printing transfer. This preparatory layer ensures adhesion and fastness are established in advance, simplifying the overall process by preventing the need for multiple subsequent printing layers

Inventive Principle:

Principle #10Preliminary action

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 achieves high-definition images with excellent adhesion and durability, controlling color migration, and allowing for easy handling and cost-effective production, suitable for both small and large-scale runs on various substrates.

Implementation Method 1

a coated transfer paper which acts as a medium allowing to receive the digital printing

Methodology Applied

Scientific EffectAbsorption: Absorption (physical)

Implementation Method 2

it is subjected to a determined temperature and pressure and finally, removing the paper

Methodology Applied

Scientific EffectThermal energy transfer: Conduction (thermal)

Data Source

PatentUS12275259B2Transfer paper and stamping method combining screen printing and digital printing

Publication Date: 2025.04.15 SUMIPRINT QUIMICA Y COLOR SAS

AI summary

The present invention refers to a coated transfer paper for receiving digital printing inks, maintaining high tonal fidelity, the paper being treated to transfer the image when it contacts a receiving base, preventing transfer to surfaces that do not have the receiving base. In addition, the invention relates to a printing method that combines the techniques of screen printing and digital printing, using the transfer paper.