Elastic Segment Production with Selective Film and Thread Feeding
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Solution Overview
Problem
Existing machines for manufacturing absorbent sanitary articles are limited to producing either elastic film segments or elastic thread segments, requiring separate machines for each type, leading to higher costs.
Innovation Solution
An apparatus and method that integrates a film feeding unit and a thread feeding unit to selectively produce either continuous elastic film or elastic threads between non-woven fabric webs, allowing for the production of both elastic film and thread segments within the same machine, using bonding units and cutting stations to form and apply these segments to absorbent sanitary articles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate machines are used for producing elastic film segments and elastic thread segments, then each machine can be optimized for its specific function, but the overall production cost increases and operational complexity increases
Solution Approach 1:
The patent integrates both film and thread feeding units into a single apparatus, enabling one machine to perform multiple functions. The apparatus can selectively produce either elastic film segments or elastic thread segments by activating the appropriate feeding unit, thereby eliminating the need for separate dedicated machines while maintaining production quality
Solution Approach 2:
The patent combines previously separate film production and thread production machines into a single integrated apparatus. The bonding unit and cutting station are shared resources that handle both film and thread segments, merging multiple production lines into one unified system that reduces overall device complexity
2Reliability
If separate machines are used for producing elastic film segments and elastic thread segments, then each machine can be optimized for its specific function, but the production cost increases
Solution Approach 1:
The integrated apparatus allows a single machine to produce both elastic film segments and elastic thread segments by selectively operating the film feeding unit or thread feeding unit. This multi-functionality eliminates the need for manufacturers to purchase and maintain two separate machines, significantly reducing production costs while maintaining optimized production quality for both segment types
Solution Approach 2:
By merging the film and thread production capabilities into one apparatus with shared bonding and cutting resources, the patent reduces capital expenditure and operational costs. Manufacturers can produce both types of segments in one machine, reducing the overall cost of manufacture compared to operating two separate dedicated machines
3Ease of manufacture
If a single machine produces both elastic film and thread segments, then production costs are reduced, but the device complexity increases
Solution Approach 1:
The apparatus is divided into distinct functional modules: a film feeding unit for elastic film, a thread feeding unit for elastic threads, a bonding unit, and a cutting station. This segmentation allows each module to be independently optimized and controlled, managing device complexity through modular design while enabling versatile production capabilities
Solution Approach 2:
The apparatus incorporates selective activation mechanisms that allow the film feeding unit or thread feeding unit to be dynamically activated based on production requirements. This dynamic control system manages complexity by enabling the machine to adapt its configuration and function according to the specific segment type being produced
4Ease of manufacture
If a single machine produces both elastic film and thread segments, then operational complexity increases, but production costs are reduced
Solution Approach 1:
The apparatus features dynamic selection capabilities that allow operators to switch between film and thread production modes as needed. The selective activation of feeding units and coordinated operation of bonding and cutting stations simplifies operational complexity by providing a unified control interface for producing different segment types on the same machine
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the production of both elastic film and thread segments in a single machine, reducing production costs and operational complexity.
Implementation Method 1
bonding unit (34) configured to bond together the first and second non-woven fabric webs to either the continuous elastic film or the elastic threads
Implementation Method 2
a cutting device (40) configured to transversely cut the composite elastic web to form an array of individual elastic segments
Implementation Method 3
a transfer group (56) configured to transfer the elastic segments, formed downstream of the cutting device, to an application station
Data Source
AI summary
An apparatus for producing strip segments, including a film feeding unit and a thread feeding unit, selectively operated to feed either a continuous elastic film or a plurality of elastic threads between a first and a second non-woven fabric web, thereby forming, selectively, an array of elastic film segments or an array of elastic thread segments.