Ceramic Decal Transfer for Contoured Glass and Dishware Printing
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Solution Overview
Problem
Existing methods for printing designs on ceramic and glass products are labor-intensive, lack consistent color reproduction, and struggle with maintaining resolution and uniformity, especially when applying images to contoured surfaces without the use of heat or efficient automated processes.
Innovation Solution
A method using a layered ink composite with a thermoplastic encapsulation layer and a ceramic toner image layer, electrostatically or electrographically deposited onto a silicone substrate, allowing image transfer at ambient temperature and subsequent firing to fix the image on contoured surfaces, along with a printing system incorporating a cover coat and transfer coat print station with digital print engines for efficient image application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional direct printing techniques are used to print ceramic pigments on glass and ceramic products, then a permanent printed image is obtained, but extensive manual preparation and labor are required and consistent color reproduction is difficult
Solution Approach 1:
The patent replaces manual mechanical printing processes with an automated decal transfer system. Images are digitally created and transferred using a decal sheet that can be applied automatically to multiple products, eliminating the need for manual screen printing or stamping operations while maintaining permanent image fixation through firing.
Solution Approach 2:
The patent creates a master digital image that is copied onto a decal sheet, which then serves as a template for transferring identical images to multiple ceramic or glass products. This copying approach ensures consistent color reproduction and image quality across large quantities of products without requiring repeated manual printing operations.
2Ease of operation
If decal image transference with transfer agent sheets is used, then image transfer is achieved, but each sheet requires separate handling making the process labor intensive and consistent reproducibility difficult
Solution Approach 1:
The patent merges multiple discrete decal sheet handling operations into a single integrated decal sheet that can transfer multiple images simultaneously. The decal sheet is designed with multiple image zones that can be transferred to multiple products in one operation, eliminating the need for separate handling of individual sheets and improving production efficiency.
3Manufacturing precision
If rotary screen printing is used to apply ceramic pigments via transfer agent, then image reproduction is achieved, but the process is labor intensive and requires precise transfer by multiple color dispensers
Solution Approach 1:
The patent extracts the color mixing and dispensing operations from the image transfer process. Instead of using multiple color dispensers that require precise coordination, the invention uses pre-mixed ceramic pigments embedded in the decal sheet material itself, allowing single-step image transfer without complex multi-color dispensing equipment.
4Productivity
If electrostatic or electrophotographic methods are used to apply ceramic toner directly to ceramic or glass products, then image application is achieved, but additional heat must be applied to permanently affix the image and no overcoat is provided to retard cadmium release or maximize gloss
Solution Approach 1:
The patent uses a composite decal sheet structure that combines ceramic pigments with a polymer matrix and overcoat layer. This composite material allows the image to be transferred at ambient temperature and provides an integrated overcoat that protects against cadmium release and enhances gloss, eliminating the need for separate heat application equipment while maintaining automated production efficiency.
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 efficient, high-quality image transfer and fixation on ceramic and glass products with improved color consistency and gloss retention, reducing labor and heat requirements while maintaining image resolution and uniformity.
Implementation Method 1
A ceramic toner configured as an image is electrostatically or electrographically deposited onto the first layer of thermoplastic ink
Implementation Method 2
The image is transferred, at or near ambient temperature, from the layered ink composite to the contoured surface of the dishware item by moving the second layer of thermoplastic ink and the contoured surface into contact with one another. The dishware item is then fired at a temperature of about 300° to 750° C.
Implementation Method 3
The dishware item is then fired at a temperature of about 300° to 750° C.
Data Source
AI summary
A glass or ceramic dishware item having a contoured surface with an image disposed thereon is provided. The image is transferred to the contoured surface from a layered ink composite. The layered ink composite is created by depositing a first layer of thermoplastic ink onto a silicone substrate. A ceramic toner configured as an image is electrographically deposited onto the first layer of thermoplastic ink. A second layer of thermoplastic ink is then deposited onto the ceramic toner. The image is transferred, at ambient temperature, from the layered ink composite to the contoured surface of the dishware item by moving the second layer of thermoplastic ink and the contoured surface into contact. The dishware item is then fired.