Hemming Device Apertures and Adhesive Strip for Fabric Alignment
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Solution Overview
Problem
Existing devices for hemming and folding fabrics lack clear guidance for folding and marking, leading to potential inaccuracies in hem width and alignment, and are often complex and expensive to manufacture.
Innovation Solution
A device with parallel rows of apertures for guiding and marking, a length ruler for measurements, and linear markings for alignment, allowing for precise folding and marking of fabrics, and optionally grid lines for enhanced precision, all integrated into a cost-effective and versatile design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a magnetic base with paramagnetic template is used for hemming, then the fabric can be fixed and folded, but the device becomes complex and expensive to manufacture
Solution Approach 1:
The patent replaces the expensive magnetic base with a disposable adhesive strip that can be easily applied and removed. The adhesive strip serves the same function of securing fabric to the pressing surface but at much lower cost and complexity, eliminating the need for magnetic components while maintaining reliable fabric fixation during the hemming process.
2Manufacturing precision
If no measurement guidance is provided on the device, then the device structure remains simple, but the hem width and alignment become inaccurate
Solution Approach 1:
The patent incorporates pre-marked measurement indicators directly on the pressing surface and adhesive strip, allowing users to pre-determine the exact hem width before folding. These visual guides are built into the device structure itself, eliminating the need for separate measuring tools while ensuring consistent, accurate hem dimensions across all operations.
Solution Approach 2:
The device provides its own measurement and alignment functions through integrated markings and guides on the pressing surface. Users can directly measure and mark fabric on the device itself, making the device self-sufficient and eliminating the need for external measuring instruments, thereby maintaining simplicity while achieving precision.
3Ease of operation
If additional tools like tailor's chalk or marker pens are used for marking, then the measurement can be marked, but the process becomes more complex and time-consuming
Solution Approach 1:
The adhesive strip and pressing surface are designed with built-in measurement markings that allow direct measurement and marking of fabric using the device itself. Users can measure and mark the hem width directly on the adhesive strip or pressing surface, eliminating the need for separate tailor's chalk or marker pens, thereby simplifying the process and reducing time required.
Data Source
Figure 1
Figure 2
AI summary
The device (10) has a flat and heat-resistant material and is arranged with a normal or a steam iron. The parallel rows of openings (20) are provided parallel to a long edge (12) and to a short edge (13). The openings serve as an orientation while seaming by a frame and are penetrated with a marking pen to mark the fabric and to facilitate the seams. A length scale is arranged at an outer edge (11) of the device.