Cotton Pad with Segmented Precutting Lines for Fiber Control
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Solution Overview
Problem
Conventional cotton pads are too large for specific skin care tasks, leading to tearing and the release of free fibers, which can cause irritation and waste, as their dimensions are not adaptable for tasks like removing nail varnish or making retouches, and the torn pieces are often inappropriate for further use.
Innovation Solution
Cotton pads with precutting lines that consist of a succession of links and cut parts, allowing for detachment into smaller, usable portions without generating free fibers, with the precutting lines preferably formed in the cross machine direction to maintain integrity and minimize fiber release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cotton pads are manufactured in standard large dimensions, then they are suitable for general makeup removal, but they are too large for specific tasks like removing nail varnish or making retouches, requiring users to tear them which generates free fibers and causes irritation
Solution Approach 1:
The cotton pad is segmented into multiple detachable portions through precutting lines consisting of alternating links and cut parts. This allows the pad to be divided into smaller usable pieces without tearing, preventing free fiber generation while maintaining adaptability for different skin care tasks such as makeup removal, nail varnish removal, and baby care.
2Adaptability or versatility
If users tear cotton pads to obtain smaller pieces, then they can adapt the size to specific tasks, but the torn pieces have inappropriate dimensions and the unused portion is difficult to keep for further use
Solution Approach 1:
The precutting lines are pre-formed during manufacturing with precisely controlled link widths (0.3-1.3 mm) and cut part widths (4-15 mm). This preliminary action ensures that when users detach portions, they obtain pieces with appropriate dimensions for specific tasks, eliminating the need for imprecise tearing and ensuring the unused portion remains intact for future use.
3Object-affected harmful factors
If cotton pads are made with precutting lines consisting of links and cut parts, then they can be detached without generating free fibers, but the structure becomes more complex
Solution Approach 1:
The precutting line structure uses specific parameter ranges: link widths of 0.3-1.3 mm (preferably 0.8 mm) and cut part widths of 4-15 mm. These parameter changes optimize the balance between structural integrity and ease of detachment, allowing the pad to be divided without free fiber generation while maintaining a relatively simple structure that does not significantly increase manufacturing complexity.
Data Source
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AI summary
The invention relates to cotton pads and to processes for manufacturing these cotton pads. It also relates to devices for implementing these processes. The cotton pad for skin care of the invention has at least one precutting line consisting of links and cut parts delimiting at least two detachable parts of the pad, the two parts being maintained attached together by the links. The invention can be used in particular in the field of hygiene products.