Decor Sheet Printing Deformation Compensation
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Solution Overview
Problem
Traditional methods for manufacturing decorative panels face challenges such as inflexibility in pattern changes due to analog printing processes and deformation issues during thermal lamination, which restricts the accuracy and efficiency of the printing and lamination processes.
Innovation Solution
A method that involves measuring deformation parameters of a substrate after a predetermined operation, such as thermal lamination, and using image processing to adjust the master image to compensate for these deformations, ensuring accurate alignment and registration of patterns on the substrate before printing, thereby predicting and compensating for substrate expansion and deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If analog printing processes (rotogravure or offset printing) are used to print decorative sheets, then printing can be performed at affordable prices, but large minimal order quantities are required and flexibility is restricted due to the need for printing equipment standstill (about 8 hours) for exchange of printing rollers, cleaning, and color adjustment
Solution Approach 1:
The patent replaces the mechanical analog printing system (rotogravure or offset printing with physical rollers) with a digital printing system. This substitution eliminates the need for physical printing rollers that require exchange and cleaning, thereby maintaining affordable printing while significantly improving flexibility and reducing changeover time from 8 hours to minimal downtime.
Solution Approach 2:
The patent changes the fundamental parameter of the printing process from analog (mechanical roller-based) to digital (electronic image rendering). This parameter change enables on-demand printing with no minimum order quantities and allows instant pattern changes without equipment standstill, while maintaining cost-effectiveness through digital printing technology.
2Reliability
If thermal lamination is performed on printed sheets to fix the decorative sheet with heat and pressure, then the decorative panel is formed, but expansion and deformation of the printed sheet occur during thermal lamination causing deformation of the printed pattern and complicating the pressing in register of the relief
Solution Approach 1:
The patent applies preliminary action by pre-compensating for the expected thermal expansion and deformation of the substrate during thermal lamination. The printing process is adjusted in advance to account for the known deformation characteristics of the substrate when heated and pressed, ensuring that the printed pattern remains aligned and in register with the relief after thermal lamination.
Solution Approach 2:
The patent implements feedback by measuring the actual deformation of the substrate during or after thermal lamination and using this information to adjust and optimize the printing and pressing parameters. This closed-loop approach allows continuous improvement of alignment precision while maintaining reliable layer adherence.
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
This method enhances the flexibility and accuracy of the printing process by allowing for precise compensation of substrate deformation, improving the alignment between the printed décor and the relief, resulting in higher-quality decorative panels with reduced production downtime.
Implementation Method 1
heating and pressing cause deformation of the printed sheet
Data Source
AI summary
A method is provided for manufacturing a printed décor sheet. The method may involve providing a first printable or printed substrate. At least one predetermined operation may be performed on the substrate, wherein the predetermined operation causes the deformation of the substrate in at least one direction. The deformation may be measured to obtain at least one deformation parameter. A first master image may be provided. An image processing operation may be performed on the first master image to obtain a second master image. The second master image may be printed on a second printable substrate to obtain the décor sheet. The image processing operation may involve at least modifying the first master image on the basis of the at least one deformation parameter.