Detectable Blow-Extruded Films for Tubular Packaging
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Solution Overview
Problem
Existing tubular packaging materials are prone to damage during the filling and sealing process, leading to potential contamination of food products and increased wear on cutting tools when metal threads are used for detectability, which can result in health risks and machine damage.
Innovation Solution
The use of blow-molded films made of detectable plastic with polarizable particles or fibers, such as metal fibers, that are evenly dispersed throughout the plastic or applied to the surface, allowing for reliable detection with metal detectors and minimizing the risk of contamination and tool wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If metal threads are incorporated into plastic yarn for detectability, then detection capability is improved, but wear on cutting tools increases and risk of contamination increases
Solution Approach 1:
The patent changes the physical state and distribution of metal from concentrated threads to dispersed particles incorporated into the plastic matrix. This parameter change maintains detectability while eliminating the fraying and detachment problems of metal threads, thus reducing contamination risk.
Solution Approach 2:
The patent creates a composite material by incorporating metal particles into plastic yarn or film. This composite structure combines the detectability of metal with the flexibility and processability of plastic, eliminating the need for separate metal threads that cause wear and contamination.
2Measurement precision
If metal threads are used in plastic yarn, then detectability is improved, but cutting tool wear increases
Solution Approach 1:
The patent changes the form of metal from threads to fine particles dispersed in the plastic matrix. This parameter change allows the material to be cut without metal threads causing excessive wear, while maintaining detectability through the dispersed metal particles.
Solution Approach 2:
The patent extracts the metal from its traditional thread form and redistributes it as dispersed particles within the plastic matrix. This extraction and redistribution eliminates the mechanical wear problem associated with metal threads while preserving the detectability function.
3Productivity
If packaging material is damaged during filling and sealing, then processing speed is improved, but product contamination risk increases
Solution Approach 1:
The patent uses composite plastic materials containing dispersed metal particles that enhance detectability. This allows for high-speed processing while maintaining material integrity and enabling detection of any fragments that might contaminate the product.
Solution Approach 2:
The patent implements a detection system using metal detectors that provide feedback on the integrity of packaging materials and loops. This feedback mechanism allows high-speed processing while immediately identifying and preventing contaminated products from entering the market.
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
This solution ensures contamination-free processing and high detection capability, reducing the risk of undetected contamination and wear on cutting tools, while maintaining the integrity of the packaging material and enhancing mechanical properties for improved tear strength and conductivity.
Implementation Method 1
polarizable particles are contained in and/or applied to the plastic. 'Polarizable' is understood to mean the presence of electrical and/or magnetic polarizability
Data Source
AI summary
The invention relates to the use of blow-extruded films made of detectable plastic for the production of tubular packaging.