3D Cellulose Product Graphic Placement via Pre-Formed Printed Sheet
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Solution Overview
Problem
The existing methods for producing three-dimensional cellulose products face challenges in graphic design complexity and production speed due to their three-dimensional shape, limiting the efficiency of graphic placement on the products.
Innovation Solution
A method involving positioning a printed sheet in register with the mold's forming surface, allowing the printed design to be accurately placed on the product during shaping by heating and pressing the cellulose blank and printed material against the mold, with the option to use tissue paper for stabilization and area-wide printing capabilities, even on complex shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If graphic design is applied to three-dimensional cellulose products using conventional methods (pressing lettering, affixing labels, pad printing), then the products can be produced with decorative elements, but the production speed decreases and the graphic design process becomes complex due to the three-dimensional shape
Solution Approach 1:
The graphic design is printed on a flat material before the forming process. The printed flat material is then positioned in front of the shaping surface and formed together with the cellulose blank into the three-dimensional product. This preliminary printing action simplifies the graphic design process and enables higher production speeds by avoiding post-forming decoration steps.
2Manufacturing precision
If the printed flat material is positioned and aligned with the print precisely on the shaping surface, then accurate placement of designs on intended locations is achieved, but the positioning and alignment process becomes more complex
Solution Approach 1:
The printed flat material itself contains registration marks that enable self-alignment with the shaping surface. The system uses these marks to automatically position the graphic design accurately on the three-dimensional product without requiring complex external positioning and alignment systems.
3Manufacturing precision
If the printed flat material is denser in areas that are stretched more during forming, then compensation for locally varying expansion is achieved, but the printing process becomes more complex
Solution Approach 1:
The printed flat material has variable density distributed across its surface, with denser areas in regions that will be stretched more during forming and less dense areas in regions that will be stretched less. This local variation in printing density compensates for locally varying expansion during the forming process, maintaining graphic design accuracy.
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 enables precise and efficient graphic design on three-dimensional cellulose products, increasing production speed and allowing for accurate placement of designs on intended locations, including logos and information, while maintaining the product's structural integrity.
Implementation Method 1
the blank and the flat material are heated, pressed against the shaping surface and formed into the three-dimensional product
Implementation Method 2
the blank and the flat material are heated, pressed against the shaping surface and formed into the three-dimensional product
Implementation Method 3
the blank and the flat material are heated, pressed against the shaping surface and formed into the three-dimensional product
Data Source
Figure 1A~1E
Figure 1D
Figure 2A~2D
AI summary
A method for producing a three-dimensional product based on cellulose comprises the following steps: • A cellulose-containing blank is positioned in front of a shaping surface of a molding tool that defines the shape of the product, • a printed flat material is positioned in front of the shaping surface of the molding tool and is aligned with a print precisely on the shaping surface, and • the blank and the flat material are heated, pressed against the shaping surface and formed into the three-dimensional product.