Cut-Resistant Fabric Closure with Integrated Load Retainer
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Solution Overview
Problem
Existing cargo container fabric closures lack durability and resistance to environmental and chemical exposure, requiring separate webbing or netting for load retention and are labor-intensive to install and remove for loading and unloading.
Innovation Solution
A cut-resistant fabric curtain and load retainer formed from high-strength yarns, such as SPECTRA® or DYNEEMA®, coated with a thermoplastic film, which can be easily installed and removed, providing a secure and durable solution for cargo containers, with adjustable web straps and a selectively closeable access opening to prevent cargo penetration and exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a fabric closure is made from conventional materials like canvas, vinyl coated nylon, or polyester, then the closure is lighter and less expensive than rigid door closures, but the fabric lacks durability and resistance to environmental and chemical exposure
Solution Approach 1:
The patent applies composite materials by combining ultra-high molecular weight polyethylene fibers (providing strength and durability) with a woven fabric structure (enabling flexibility and light weight). This composite construction achieves both the weight reduction goal and the durability requirement simultaneously, resolving the technical contradiction between light weight and reliability.
2Strength
If fabric closures are made from ultra-high molecular weight polyethylene fibers, then strength and durability are increased while being considerably lighter, but the fabric lacks the ability to serve as load retainers
Solution Approach 1:
The patent implements multi-functionality by designing the fabric closure to perform multiple functions: it serves as both a protective cover (providing tear-strength and cut-resistance) and as a load retainer (through integrated webbing straps with fasteners). This single component performs what previously required separate elements, resolving the contradiction between strength and versatility.
Solution Approach 2:
The patent merges the functions of the fabric cover and the load retention system into a single integrated closure assembly. The webbing straps and fasteners are combined with the ultra-high molecular weight polyethylene fabric panel, creating a unified structure that provides both protection and cargo restraint, eliminating the need for separate components.
3Ease of operation
If the fabric closure is completely removed for loading and unloading cargo, then full access is provided, but labor and time requirements increase
Solution Approach 1:
The patent applies segmentation by dividing the closure into a main fabric panel and detachable webbing straps with fasteners. This allows the closure to be partially opened or accessed without requiring complete removal of the entire closure system, enabling cargo loading/unloading while maintaining most of the protective coverage, thus reducing time loss while improving ease of operation.
Data Source
AI summary
A fabric closure, and enclosure, are provided for cargo containers, including a fabric panel formed of high-strength yarns, and a selectively closeable opening formed in the fabric panel for access therethrough, the selectively closeable opening having a substantially vertical opening, and a slide fastener for closure thereof.