Screen-Printing Panel Corner Softening via Locking Strip Gaps
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Solution Overview
Problem
Existing silkscreen printing technologies face issues with mesh degradation due to chemical exposure, space inefficiency during storage, and mesh tearing caused by extreme corner forces during tensioning, which are not effectively addressed by current glues and tensioning methods.
Innovation Solution
A screen-printing panel design featuring a locking strip with adhesive and stitching to secure the mesh, where the mesh is cut to rectangular shape with straight edges and folded around the locking strip, allowing for corner softening through gaps and color-coded stitching for orientation, reducing tension at corners and preventing tearing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mesh is glued to frame under tension, then mesh is secured to frame, but mesh degrades due to chemical exposure and glue becomes unavailable
Solution Approach 1:
The patent replaces the chemical adhesive system with a mechanical fastening system. The mesh is secured to the frame using tensioning members that apply mechanical tension directly to the mesh, eliminating the need for chemical glues that degrade under chemical exposure.
Solution Approach 2:
The patent introduces tensioning members as intermediary elements between the mesh and frame. These members serve as a mediator that transfers and distributes tension forces, replacing the direct chemical bonding approach with an indirect mechanical connection system.
2Reliability
If locking strip extends full length of roller frame, then mesh is securely held, but locking strip catches on fabric during insertion and removal
Solution Approach 1:
The patent extracts the problematic full-length locking strip design and replaces it with a shortened version. By removing the excessive length that extends beyond necessary coverage, the locking strip no longer catches on fabric during insertion and removal while maintaining adequate mesh security.
Solution Approach 2:
The patent inverts the design approach by making the locking strip shorter rather than longer. Instead of extending the locking strip to maximum length for security, the solution reverses the approach by limiting its length to the minimum necessary, thereby eliminating the catching problem.
3Stress or pressure
If extreme forces are applied at roller frame corners during tensioning, then mesh is tensioned, but mesh tears at corners
Solution Approach 1:
The patent applies local quality by differentiating the treatment of corner regions versus the rest of the mesh. Corner softening procedures are specifically applied to corner areas to reduce stress concentration, while the rest of the mesh maintains standard tensioning. This localized approach preserves mesh integrity at vulnerable corner points.
Solution Approach 2:
The patent implements beforehand cushioning by pre-softening the corner areas before applying full tension. This preparatory measure creates a cushioning effect in the corner regions, allowing them to absorb and distribute extreme forces that would otherwise cause tearing during the tensioning process.
4Reliability
If stretched frames are used for storage, then mesh is under tension, but frames take up excessive storage space
Solution Approach 1:
The patent applies dynamics by making the frame system collapsible rather than rigid. The frame can be expanded to the necessary size during use to maintain mesh tension, then collapsed to a compact form for storage. This dynamic transformation allows the same structure to serve both functional and storage requirements efficiently.
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
The solution effectively prevents mesh tearing and simplifies handling and storage by reducing corner tension and using environmentally friendly adhesives, while allowing for easy assembly and disassembly of the screen-printing panel.
Implementation Method 1
An adhesive may be disposed on the first surface along a portion of the length of the locking strip
Data Source
AI summary
A screen-printing panel comprising a locking strip sewn to screen-printing mesh is described. The mesh along an edge of the panel is folded around the locking strip and secured using a line of stitching. A gap between the end of the locking strip and the edge of the mesh contributes to corner softening. Another gap between the end of the stitching and the end of the locking strip also contributes to corner softening. Locking strips have various cross sections including rectangular, triangular, and complex curves. Two colors of thread may be used to aid in orienting the panel. An adhesive may be used to hold the mesh to the locking strip for convenience during handling and sewing.