Flexible Drum Label Laminate for BS5609 Marine Durability
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Solution Overview
Problem
Current label constructions for marine environments face challenges in achieving conformability and print durability similar to PVC-based labels without using PVC, while also passing British Standard BS5609 testing, and conventional polyolefin-based films are thick and expensive due to high filler loading.
Innovation Solution
A label construction comprising a facestock with a laminate of polypropylene-based film layers and non-woven layers, a topcoat, and an adhesive layer, designed to be flexible and durable, with low topcoat coatweights, enabling laser-printability and compliance with BS5609 standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If PVC-based formulations are used to achieve soft, conformable characteristics, then conformability is improved, but health hazards and environmental damage worsen due to hydrogen chloride release and dioxin production
Solution Approach 1:
The patent removes PVC and its harmful additives (phthalates) from the label construction while retaining the desired conformable properties through alternative material selection. The facestock uses polyolefin-based synthetic film without PVC, eliminating the source of hydrogen chloride and dioxin generation while maintaining flexibility and marine durability.
Solution Approach 2:
The invention employs a composite label construction with multiple layers including polyolefin-based facestock, adhesive layers, and topcoat layers. This composite structure achieves conformability and durability without relying on PVC, combining materials that collectively provide the necessary performance characteristics while avoiding harmful substances.
2Strength
If conventional polyolefin based synthetic films use high weight percentages of nonabrasive filler to achieve durability, then abrasion resistance is improved, but film thickness and cost worsen due to high filler loading resulting in thick films
Solution Approach 1:
The patent optimizes the filler content parameter to a balanced level rather than using high weight percentages. This moderate filler loading achieves sufficient abrasion resistance for marine durability while preventing excessive film thickness, thereby reducing material costs and improving label performance.
3Reliability
If PVC labels are used to achieve print durability in marine environments, then print durability is improved, but environmental harm worsens through hydrogen chloride fume release and dioxin production during incineration
Solution Approach 1:
The patent converts the potential harm of PVC incineration into a benefit by selecting polyolefin-based materials that, when incinerated, do not produce hydrogen chloride or dioxins. The label construction maintains BS5609 compliance for marine durability while the alternative material base transforms the incineration process from harmful to environmentally acceptable.
4Reliability
If thick films with high filler loading are used to achieve marine durability, then durability is improved, but cost worsens due to increased material usage
Solution Approach 1:
The patent optimizes multiple parameters including filler content, film thickness, and layer composition to achieve the minimum necessary durability for marine environments. By balancing these parameters rather than using excessive filler and thickness, the label construction reduces material consumption and cost while maintaining compliance with BS5609 testing requirements.
Data Source
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AI summary
Laser printable, flexible drum labels that are sufficiently durable for marine environments are disclosed. Drums containing the durable labels are also disclosed.