Two-Way See-Through Banner Perforation Method
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Solution Overview
Problem
Existing methods for manufacturing visual media with images on both sides that allow users to see through without seeing the other image are limited, particularly due to issues like bleedthrough of ink when holes are formed before printing, and the need for precise registration of images on both sides.
Innovation Solution
A method involving printing images on both sides of a material and then perforating it with holes after the images are printed, using a perforation machine to create holes that allow for high light transmission and precise image alignment, with the option to apply adhesive before or after perforation, and using a staggered hole pattern for enhanced visibility and strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If holes are formed in the material before printing images, then light transmission is improved, but ink bleedthrough occurs between sides
Solution Approach 1:
The patent applies preliminary action by printing the images on both sides of the material before forming the holes. This sequence prevents ink bleedthrough because the holes are created after the ink is already deposited and dried on both surfaces, eliminating the harmful effect of ink mixing while maintaining light transmission through the perforations.
2Illumination intensity
If holes are formed in the material before printing images, then light transmission is improved, but image alignment precision deteriorates
Solution Approach 1:
By performing the printing operation before hole formation, the patent ensures that image alignment can be precisely controlled during the printing process using registration marks and alignment systems. The holes are then punched through both layers simultaneously or sequentially with precise positioning, maintaining manufacturing precision while achieving light transmission.
Solution Approach 2:
The patent replaces mechanical hole formation with laser perforation technology, which provides superior positioning accuracy and control. The laser system can precisely follow the contour of the banner and create holes at exact locations without affecting image alignment, substituting mechanical punching with a more precise optical-mechanical system.
3Illumination intensity
If a dense hole pattern is used for maximum visibility, then light transmission is improved, but tensile strength deteriorates
Solution Approach 1:
The patent applies local quality by varying the hole density and size across different regions of the banner. Areas requiring maximum visibility have higher hole density, while areas needing structural strength have lower density or larger inter-hole spacing. This localized optimization allows the banner to achieve both high light transmission where needed and maintain tensile strength in critical structural regions.
Solution Approach 2:
The patent uses a controlled porous structure with perforations that optimize the balance between light transmission and mechanical strength. The porous design allows light to pass through while the remaining material matrix maintains structural integrity, creating an optimal ratio of open area to solid material that satisfies both visibility and strength requirements.
Data Source
AI summary
A two-way see-through banner. The two-way see-through banner includes a first side having a first image printed thereupon, a second side having a second image printed thereupon, and a plurality of perforating holes through the banner. The perforating holes are created only after the first image and the second image have been printed on the first and second sides of the banner.