Rotational Offset Cosmetic Pad Cutting for Easy Grasping
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Solution Overview
Problem
Existing systems for manufacturing and packaging cosmetic and skin care pads, particularly round pads, face challenges in allowing easy removal from a stack, especially when moistened, due to lack of salient points, leading to complex and costly manufacturing and packaging solutions.
Innovation Solution
A method of cutting pads with rotational offsets to create salient points, allowing each pad to be rotationally askew in the stack, using a cutting wheel with offset cutting forms to produce pads with recessed areas that facilitate easy grasping, while maintaining simple manufacturing and packaging techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If round pads are used, then they are preferred for applying skin care products to rounded surfaces, but they have no salient points making them difficult to lift from a stack
Solution Approach 1:
The patent applies asymmetry by creating non-uniform thickness distribution in round pads. The pads are formed with a thicker portion and a thinner portion, breaking the rotational symmetry. This allows the pads to be easily grasped by the thicker edge while maintaining their circular shape for effective application on rounded surfaces like cheeks and eyelids.
Solution Approach 2:
The patent introduces a third dimension (thickness variation) to the otherwise two-dimensional circular pad. By varying the thickness around the circumference, the pad gains an asymmetric profile that provides a grasping edge without altering the top-down circular shape needed for cosmetic application.
2Ease of operation
If square pads are used, then they have salient corners for easy grasping, but they are not ideal for rounded surfaces
Solution Approach 1:
The patent creates asymmetric round pads with varying thickness around the circumference. This provides salient edges for easy grasping similar to square pads, while maintaining the overall circular shape necessary for effective application on rounded cosmetic surfaces.
3Ease of operation
If mechanical dispensers are used to separate pads, then pad removal is assisted, but the systems are expensive to manufacture and require separate purchasing
Solution Approach 1:
The patent makes the pads self-servicing by incorporating asymmetric thickness directly into the pad structure. The thicker portion naturally protrudes or provides a grasping edge, enabling users to easily remove pads from the stack without requiring any external mechanical dispenser system.
Solution Approach 2:
The asymmetric thickness is built into the pads during manufacturing before packaging. This preliminary structuring of the pads with grasping edges eliminates the need for complex dispensing mechanisms, as the pads are pre-configured for easy removal.
4Ease of operation
If pad shape is altered to create salient points, then grasping is improved, but manufacturing becomes more complex and expensive
Solution Approach 1:
The patent varies the thickness parameter around the circumference of the round pad to create asymmetric profiles. This can be achieved through straightforward manufacturing processes like offset stacking or differential compression, avoiding complex mold designs while still creating distinct thicker portions for easy grasping.
Data Source
AI summary
A system and method of forming a stack of pads, wherein each of the pads is rotationally askew with respect to its immediate neighbors in the stack. A cutting wheel is provided with cutting forms. The cutting forms are rotated by an offset angle, relative each adjacent cutting form. The cutting wheel is run over material to cut pads. Each of the pads sequentially cut is rotationally offset by the same offset angle as are the cutting forms. As the pads are cut, the pads are sequentially placed into a vertical stack. Each of the pads in the vertical stack is offset from immediately adjacent pads by the offset angle. The pads are formed into shapes that are mostly circular but have recessed areas that create salient points on the pads. The offset angles of each of the pads enables these salient points to be readily grasped.