Absorbent Article Line Traceability for Defect Source Identification
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Solution Overview
Problem
In the manufacturing of absorbent articles like sanitary napkins, it is difficult to identify which treatment processing section on a rotating body is responsible for a defective treated portion, leading to challenges in repairing the issue and preventing further defective product production.
Innovation Solution
A method and device that generate correlation information linking each treated portion or absorbent article with the specific treatment processing section that formed it, allowing for easy identification of the responsible section, including the use of identifiers and synchronization signals to coordinate processing operations and track defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple treatment processing sections are arranged on a rotating body to repeatedly form treated portions in the continuous sheet, then productivity is improved, but it becomes difficult to identify which specific treatment processing section formed a defective treated portion
Solution Approach 1:
The patent implements a feedback mechanism by generating identification information that links each treated portion to its originating treatment processing section. This feedback loop enables traceability from the final product back to the specific processing section, allowing operators to identify and repair defective sections without stopping the high-speed production line. The identification information acts as feedback that closes the loop between production and quality control.
Solution Approach 2:
The patent introduces an intermediary element - the identification information - that mediates between the multiple treatment processing sections and the quality inspection system. This intermediary carries the correlation data that connects treated portions with their source processing sections, enabling identification without requiring direct observation or complex tracking of each section's output.
2Manufacturing precision
If multiple treatment processing sections are arranged on a rotating body to repeatedly form treated portions, then manufacturing precision is improved through consistent repeated processing, but ease of repair deteriorates when defects occur
Solution Approach 1:
The patent applies preliminary action by generating and recording identification information that correlates each treated portion with its treatment processing section before the quality inspection occurs. This pre-established correlation data allows for immediate identification of defective sections when defects are detected, eliminating the need for time-consuming diagnostic procedures and enabling rapid repair while maintaining production consistency.
3Ease of operation
If correlation information is generated to link each treated portion with its treatment processing section, then ease of operation is improved for defect tracking, but device complexity increases due to additional information generation requirements
Solution Approach 1:
The patent implements universality by designing the information generation device to perform multiple functions: it not only generates identification information for tracking purposes but also correlates treatment processing section data with treated portion data, and provides the basis for quality inspection and repair management. This multi-functional approach consolidates what could be separate complex systems into a single integrated device, reducing overall system complexity while maintaining ease of operation.
Data Source
Figure 1A~1B
Figure 2
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AI summary
According to the present invention, A method for manufacturing an absorbent article 1, includes: a transporting step of transporting a continuous sheet (3ta) in a direction of transport, the continuous sheet (3ta) being continuous in the direction of transport; a treated-portion forming step of repeatedly forming a treated portion (3c) in a portion (1p) of the continuous sheet (3ta) in the direction of transport, the portion (1p) being a unit portion that is to become the absorbent article (1), the treated-portion forming step being performed at a predetermined position (P11) in the direction of transport; an information generating step of generating information regarding either of each treated portion (3c) and the absorbent article (1) that has that treated portion (3c). In the treated-portion forming step, the treated portions (3c) are formed by a plurality of treatment processing sections (11h, 11h, ...) provided at different positions in a rotation direction on an outer circumferential surface of a rotating body (11d), the rotating body (11d) being arranged at the predetermined position (P11) and rotating along the direction of transport. In the information generating step, as the information, generated is correlation information for correlating either of each treated portion (3c) and each absorbent article (1) having that treated portion (3c) with the treatment processing section (11h) which has formed that treated portion (3c) among the plurality of treatment processing sections (11h, 11h, ...).