Paper Wrapping Sealing with Induction-Heated Ferromagnetic Members
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Solution Overview
Problem
Existing packaging machines for tissue paper products face inefficiencies with Teflon-coated belts, which are energy-inefficient, have short lifespans, and require reduced machine speed for adequate sealing, leading to production variability and environmental concerns due to non-uniform sealing and the use of thermoplastic films.
Innovation Solution
A packaging machine that uses a dispensing device to apply sealant to paper wrapping sheets, combined with ferromagnetic sealing members and induction heating, allowing for efficient sealing of paper wrapping sheets around tissue paper products, reducing the need for glues and enhancing productivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Teflon-coated belts are used for heat-sealing, then sealing can be achieved, but energy consumption increases and belt lifespan decreases
Solution Approach 1:
The patent replaces the mechanical Teflon-coated belt system with a ferromagnetic sealing member system that uses induction heating. This substitution eliminates the need for continuous mechanical heating and reduces energy consumption while maintaining sealing reliability.
Solution Approach 2:
The patent changes the material parameter from Teflon coating to ferromagnetic material, which enables induction heating. This parameter change allows for more efficient heat generation and transfer, reducing overall energy consumption while improving sealing performance.
2Reliability
If Teflon-coated belts are used for heat-sealing, then sealing can be achieved, but belt lifespan decreases due to rapid wear
Solution Approach 1:
The patent replaces the mechanical Teflon-coated belt with a ferromagnetic sealing member that does not undergo the same wear mechanisms. The induction heating process eliminates the need for continuous mechanical friction and heat generation, significantly extending component lifespan.
Solution Approach 2:
The patent eliminates the need for frequently replaced Teflon-coated belts by using a more durable ferromagnetic sealing member system that maintains its properties over extended periods, reducing replacement frequency and operational costs.
3Manufacturing precision
If machine speed is reduced for adequate sealing with Teflon-coated belts, then sealing quality improves, but productivity decreases
Solution Approach 1:
The patent changes the heating mechanism from conventional heating to induction heating, which allows for faster and more efficient heat transfer. This enables the machine to operate at higher speeds while maintaining sealing quality, as the induction process can rapidly heat the ferromagnetic sealing member without requiring reduced production speed.
4Reliability
If Teflon-coated belts are used for paper wrapping, then sealing can be achieved, but heat transmission to glue is insufficient
Solution Approach 1:
The patent replaces the Teflon-coated belt heating system with induction heating of ferromagnetic sealing members. This substitution provides superior heat transmission efficiency, allowing adequate heat to be transmitted to the glue for effective sealing, while the ferromagnetic material's high magnetic permeability enables more efficient induction heating.
5Reliability
If thermoplastic films are used for packaging, then sealing can be achieved, but environmental friendliness decreases
Solution Approach 1:
The patent changes the packaging material from thermoplastic film to paper wrapping sheet, fundamentally altering the material composition. This parameter change maintains sealing reliability through the ferromagnetic sealing member system while significantly improving environmental friendliness, as paper is more biodegradable and environmentally sustainable compared to thermoplastic films.
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
The solution provides environmentally friendly packaging with improved efficiency, reduced energy consumption, and increased productivity by using paper wrapping sheets sealed with ferromagnetic members and induction heating, overcoming the limitations of Teflon-coated belts.
Implementation Method 1
a sealing device for sealing the paper wrapping sheets around the groups of products, characterised by comprising a ferromagnetic sealing member and an induction heating device
Data Source
AI summary
Packaging machine for packaging tissue paper products, such as kitchen towels and toilet rolls, by wrapping a paper wrapping sheet around the products, the machine including: a feeding station for feeding, one by one in succession, groups of products including at least one product; a wrapping station for wrapping the paper wrapping sheet around the groups of products; a sealing device for sealing the paper wrapping sheet around the groups of products; a wrapping sheet feeding station for feeding a single wrapping sheet at a time along a sheet feeding direction towards the wrapping station, including a dispensing device for applying sealant to the paper wrapping sheets.