Electromagnetically Detectable Plastic Packaging Additives
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Solution Overview
Problem
Existing production lines are inadequately equipped to detect spurious plastic and polymeric materials that can enter food or pharmaceutical production lines, posing laceration hazards and potentially degrading pharmaceutical products, as these materials are not detectable by conventional metal detectors or x-ray scanners.
Innovation Solution
Incorporating an electromagnetically detectable additive into plastic packaging components, such as aerosol can lids and tubes, to make them detectable by conventional metal detection, x-ray, or microwave equipment, thereby triggering an alarm when they enter the production stream.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional metal detectors and x-ray scanners are used for detection, then metal contaminants can be detected, but plastic and polymeric materials cannot be detected
Solution Approach 1:
The patent changes the electromagnetic properties of plastic packaging components by incorporating additives (metal particles, magnetic particles, or conductive materials) that alter their electrical conductivity and magnetic permeability. This enables detection equipment to identify plastic materials through their modified electromagnetic characteristics, expanding detection capability beyond just metal contaminants.
Solution Approach 2:
The patent creates composite packaging materials by combining conventional plastic polymers with detectable additives such as metal particles, magnetic particles, or conductive fillers. This composite structure maintains the functional properties of plastic packaging while introducing electromagnetic detectability, allowing single detection system to identify both metal and plastic contaminants.
2Ease of manufacture
If plastic packaging components are used in production lines, then product packaging and protection is achieved, but undetected plastic debris can cause laceration hazards and product contamination
Solution Approach 1:
The patent introduces detectable additives as intermediary substances within the plastic packaging components. These additives serve as mediators that enable interaction between the plastic material and electromagnetic detection fields, allowing detection equipment to identify plastic debris without compromising the packaging's protective function.
Solution Approach 2:
By modifying the electromagnetic parameters (electrical conductivity, magnetic permeability) of plastic packaging through additive incorporation, the patent enables detection systems to distinguish plastic materials from food products. This parameter change allows safety detection while maintaining packaging functionality.
3Adaptability or versatility
If detection equipment is added to expand material detection range, then more contaminant types can be detected, but system complexity and cost increase
Solution Approach 1:
The patent makes plastic packaging components detectable using electromagnetic properties that existing metal detection equipment can already detect. This approach allows existing detection systems to perform multiple functions (detecting both metal and plastic contaminants) without requiring separate specialized detection systems for each contaminant type.
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 detection and removal of inadvertently displaced plastic packaging components from production streams, preventing contamination and ensuring product safety by utilizing electromagnetic spectral detection techniques.
Implementation Method 1
electromagnetically spectrally detectable additive intermixed with the resin... detectable by foreign object detection equipment associated with a product stream... metal detectors... x-ray scanners and other electromagnetic field (emf) spectral region spectral detection techniques
Data Source
Figure 1~2B
Figure 2C~2E
Figure 2F~2J
AI summary
A plastic packaging component comprising: a thermoplastic or thermoset resin forming a matrix; and an electromagnetic spectrally detectable additive intermixed with said resin, said resin formed into a shape of the component; wherein said additive is stainless steel particulate wherein said additive has an average x-y-z linear extent such that at least 50% of additive particles are less than 100 microns. wherein the shape is one of: an aerosol package lid, an aerosol spray button (22), an aerosol spray tube (26) , an aerosol package clip-on extension holder for said tube, a trigger sprayer or an integrated lid sprayer, a grease cartridge or a grease cap, a packing strap, a pail lid or a jar cap, a brush, or a plastic fiber towel sheet.