Decor Sheet Deformation Compensation via Digital Image Processing
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Solution Overview
Problem
The existing methods for manufacturing decorative panels using décor papers face challenges such as inflexibility in changing décor patterns, significant standstill times for printing equipment, and issues with deformation and expansion of décor papers during impregnation with resin like melamine.
Innovation Solution
A method involving deformation prediction and compensation for décor papers, which includes measuring deformation parameters after a predetermined operation, performing image processing on a master image to create a second master image that compensates for the predicted deformation, and printing this second master image on a substrate to produce a décor sheet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If digital printing techniques are used to enhance flexibility in printing décors, then adaptability is improved, but deformation and expansion of décor paper during impregnation with resin occurs, worsening manufacturing precision
Solution Approach 1:
The patent applies preliminary action by measuring the deformation parameters of the décor paper after impregnation with resin, and using these measurements to calculate compensation values that are applied to the digital printing process before printing. This allows the printing system to pre-compensate for the known deformation, ensuring that the printed décor aligns correctly with the relief features even after the paper deforms during lamination.
Solution Approach 2:
The patent implements feedback by measuring the actual deformation of the décor paper during or after impregnation, using these measurements to adjust and optimize the printing parameters. The deformation data feeds back into the printing system to refine the compensation algorithm, improving alignment accuracy in subsequent production runs.
2Manufacturing precision
If analog printing processes like offset or rotogravure are used, then manufacturing precision is maintained, but productivity is reduced due to large minimal order quantities and long standstill times for equipment changes
Solution Approach 1:
The patent replaces the mechanical printing system (offset or rotogravure rollers) with a digital printing system that uses computational methods to achieve precision. Instead of relying on physical printing plates and mechanical registration systems, the invention uses digital image processing and deformation compensation algorithms to maintain alignment accuracy while enabling rapid changeovers and higher productivity.
3Strength
If décor paper is impregnated with melamine resin during the DPL process, then strength and wear resistance are improved, but deformation and expansion of the substrate occur, worsening manufacturing precision
Solution Approach 1:
The patent measures the deformation characteristics of the décor paper after impregnation with melamine resin and uses this information to calculate compensation values that are applied to the digital printing process before printing. This preliminary compensation ensures that the printed décor will align correctly with relief features even after the impregnation-induced deformation occurs.
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.