Induction Sealing Members for Uniform Paper Wrap Sealing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing packaging machines for tissue paper products face inefficiencies in using paper wrapping materials, leading to poor quality, high waste, and energy inefficiency, particularly with Teflon-coated belts, and lack of uniform sealing, which compromises productivity and environmental sustainability.
Innovation Solution
A packaging machine with a sealing station using ferromagnetic or paramagnetic materials for inducing eddy currents to heat-seal paper wrapping sheets, combined with a flexible sealing member and adjustable pressure, ensuring uniform and efficient sealing of paper wrapping sheets around tissue paper products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a packaging machine is designed to handle both rigid and flexible packaging materials, then versatility is improved, but device complexity increases
Solution Approach 1:
The sealing device incorporates adjustable components including a movable sealing element and adjustable heating zone that can be dynamically positioned and configured to accommodate different packaging material types (rigid containers, flexible pouches, bottles), allowing the same device to adapt its sealing parameters and geometry for versatile material handling without requiring multiple specialized devices
2Manufacturing precision
If sealing parameters are optimized for specific material types, then sealing quality is improved, but adaptability deteriorates
Solution Approach 1:
The sealing device features dynamically adjustable sealing parameters including variable heating temperature, adjustable sealing pressure, and movable sealing element position that can be optimized for each specific packaging material type while maintaining the same basic device structure, thereby achieving high sealing quality across different materials without sacrificing adaptability
Solution Approach 2:
The device enables changeable sealing parameters such as adjustable temperature zones, variable sealing force, and modifiable sealing geometry that can be reconfigured for different material properties (rigid vs. flexible), allowing optimization of sealing quality for each material type while preserving the device's universal applicability
3Productivity
If the sealing device is integrated into the packaging machine, then productivity is improved, but device complexity increases
Solution Approach 1:
The sealing device is integrated with the packaging machine's existing structure, combining the sealing function with the packaging operation in a unified system that operates continuously without requiring separate standalone sealing equipment, thereby improving productivity while the modular design keeps the added complexity manageable
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 enhances packaging efficiency, quality, and flexibility while using environmentally friendly materials, reducing waste and energy consumption, and providing stable, uniform sealing without tearing or breaking.
Implementation Method 1
a heating element positioned below the sealing surface of the packaging material when the packaging material is on the packaging machine
Data Source
Figure 1
Figure 2
Figure 3
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 comprising: - a product feeding station for grouping and feeding, one by one in succession, groups of products comprised of at least one product, - a wrapping station for wrapping the wrapping sheets around the groups of products, - downstream of the wrapping station, a sealing station for sealing the wrapping sheets wrapped around the groups of products, wherein the sealing station comprises a channel for moving forward the groups of products and a pair of sealing members provided opposite each other on two sides of the channel, each sealing member having a uniform sealing surface made of a material of the type in which eddy currents can be induced when the material is subjected to a change in the magnetic field, each sealing member being driven between at least two return members, the sealing members being respectively associated with an electromagnetic induction device adapted to heat the sealing surface up to a temperature comprised between 110° C and 400° C.