Handheld Roller for Fabric Creasing Without Heat or Marks
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Solution Overview
Problem
Conventional ironing methods for creating creases in fabrics are time-consuming, can leave unwanted marks, and are unsuitable for materials with poor heat resistance, such as vinyl, due to the large pressing surface and temperature requirements.
Innovation Solution
A handheld roller device with a rotatable rolling member featuring a constant diameter portion and decreasing diameter portions, allowing for efficient pressing and minimizing mark formation, suitable for various fabric types including those with poor heat resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional iron is used for ironing, then creases can be put in fabric, but it takes a long time to heat up and cannot be done quickly
Solution Approach 1:
The patent replaces the thermal field (heating element) with a mechanical field (manual roller). The pressing function is achieved through mechanical force applied by hand, eliminating the need for thermal energy and heating time, thus resolving the contradiction between ironing speed and heating time.
2Strength
If a conventional iron with large pressing surface is used, then it can press thick fabric, but it leaves unwanted traces in the fabric
Solution Approach 1:
The rolling member features a variable cross-section design with different diameter portions (constant diameter portion, decreasing diameter portions, and tapered portions) that create localized pressing zones. This allows concentrated pressure on specific areas needing creases while avoiding excessive pressure on surrounding fabric, thus preventing unwanted traces while maintaining effectiveness on thick fabric.
3Manufacturing precision
If a conventional iron is used, then it can create sharp creases, but it cannot be used on materials with poor heat resistance such as vinyl
Solution Approach 1:
The patent replaces thermal pressing with mechanical pressing using a manual roller. This substitution allows the device to create sharp creases through mechanical force without generating heat, making it suitable for heat-sensitive materials like vinyl while maintaining crease sharpness, thus resolving the contradiction between crease quality and material adaptability.
Data Source
AI summary
A handicraft roller, used for pressing a piece of cloth to put a sharp crease or fold in the fabric, includes an elongated grip with first and second ends spaced from each other in the longitudinal direction of the grip. A rolling member is attached to the first end of the grip so as to be rotatable about a predetermined axis. The rolling member is made up of a constant diameter portion and two decreasing diameter portions flanking the constant diameter portion. The constant diameter portion has an outer diameter that remains constant over a predetermined length of the axis. Each of the decreasing diameter portions has an outer diameter that decreases with increasing distance from the constant diameter portion along the axis.