Cylindrical Cutter Ejector for Cosmetic Patch Fabric
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Solution Overview
Problem
The manufacturing of cosmetic patches with hydrogel components is inefficient due to difficulties in cutting and separating stacked patch fabric, leading to long manufacturing times and low accuracy, especially when using oil or emulsion bases that tend to agglomerate and have poor skin adhesion.
Innovation Solution
A press-molding apparatus with a cylindrical cutter and ejector system that allows simultaneous cutting of stacked patch fabric to a predetermined shape, featuring a division part for symmetrical cutting and air vent holes for efficient pressure discharge, along with an ejector mechanism for easy separation of cut pieces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual cutting of hydrogel-coated patch fabric is used, then cutting accuracy can be maintained, but manufacturing time increases significantly
Solution Approach 1:
The patent divides the cutting process into multiple independent cutting blades arranged in sequence, allowing simultaneous cutting of multiple stacked fabric pieces. Each blade performs cutting independently, enabling parallel processing of multiple workpieces which significantly increases productivity while maintaining precision through the structured arrangement of cutting edges.
Solution Approach 2:
The patent replaces manual mechanical cutting with an automated press-molding system that applies controlled mechanical pressure through a mold. This automated system eliminates manual operation variability, maintains consistent cutting accuracy across all pieces, and enables simultaneous processing of multiple stacked fabrics, thereby resolving the contradiction between precision and productivity.
2Productivity
If stacked pieces of patch fabric are cut simultaneously, then manufacturing speed increases, but separation of cut pieces from cutter becomes difficult
Solution Approach 1:
The patent incorporates an ejector mechanism that actively removes cut fabric pieces from the cutter mold after cutting. This extraction function separates the cutting function from the holding function, allowing simultaneous cutting of multiple pieces while automatically resolving the separation issue through the ejector's pushing action that releases all cut pieces at once.
Solution Approach 2:
The patent introduces an ejector as an intermediary component between the cutter mold and the cut fabric pieces. This intermediary mechanism facilitates the separation process by providing a controlled releasing force that detaches the cut pieces from the cutter without requiring manual intervention, thus maintaining high manufacturing speed while improving ease of operation.
3Reliability
If oil base with strong agglomeration tendency is used, then skin adhesion is improved, but movement of active ingredient becomes slow
Solution Approach 1:
The patent employs a composite base formulation that combines oil-based components for adhesion with hydrogel components for active ingredient mobility. This composite structure integrates the adhesive properties of oil bases with the water-containing channels of hydrogel, enabling both strong skin adhesion and efficient active ingredient transport through the dual-phase material system.
Solution Approach 2:
The patent creates different local properties within the base material: oil-rich regions provide adhesion to skin, while hydrogel-rich regions provide pathways for active ingredient movement. This spatial differentiation of material properties allows the base to simultaneously exhibit strong adhesion characteristics and efficient transport characteristics in different locations, resolving the contradiction between adhesion and mobility.
Data Source
AI summary
Disclosed is a press-molding apparatus for a cosmetic patch, suitable for use in cutting a piece of patch fabric to a predetermined shape while being pressed using a press, including: a planar pressing plate, which forms a pressing portion of the press; at least one cutter, which is fixedly secured to the lower surface of the pressing plate and protrudes therefrom so as to cut the piece of patch fabric through pressing of the press, and is formed in a cylindrical shape so that a plurality of stacked pieces of patch fabric is simultaneously cut and the cut pieces of patch fabric are received in the space inside the cutter; and an ejector, which separates the pieces of patch fabric received in the cutter from the cutter.