Soft Textile Transfer Case for Hazardous Materials
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Solution Overview
Problem
Current container solutions for transporting biologically or chemically hazardous materials are inadequate for larger volumes, as they face increased stresses at higher internal pressures, are prone to leaks, and lack ease of use and portability, failing to meet safety and shipping standards for larger scale containers.
Innovation Solution
A soft transfer case with a film-laminated, woven synthetic fiber exterior layer and a molded elastomeric bladder, designed to be puncture-resistant and leak-proof, allowing for the safe transport of larger hazardous contents while maintaining a low weight and ease of use, featuring a circular woven preform with no seams and decoupled structural and air retention functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If container size is increased to accommodate larger hazardous materials, then transport capacity is improved, but stress and pressure resistance deteriorates
Solution Approach 1:
The container is divided into multiple layers with distinct functions: an outer flexible container providing structural integrity and stress distribution, an intermediate textile layer offering reinforcement and puncture resistance, and an inner bladder serving as the leak-proof containment barrier. This segmentation allows each layer to optimize for its specific function while collectively handling larger volumes with improved stress resistance.
Solution Approach 2:
The container employs composite construction combining flexible materials (outer container), woven textiles (intermediate layer with specific grain patterns), and elastomeric materials (inner bladder). This composite approach enables the large-volume container to withstand higher stresses and pressures by distributing loads across materials with complementary properties.
2Volume of stationary object
If container size is increased to accommodate larger hazardous materials, then transport capacity is improved, but leak-proof performance deteriorates
Solution Approach 1:
The containment system is segmented into multiple functional layers: the outer flexible container provides structural support, the intermediate textile layer adds reinforcement and puncture resistance, and the inner bladder delivers the primary leak-proof barrier. This segmentation ensures that leak-proof performance is maintained independently in each layer, with the inner bladder specifically designed to prevent leakage even in large-volume configurations.
Solution Approach 2:
The container utilizes flexible shells and thin film structures throughout its construction. The outer flexible container and inner elastomeric bladder both employ thin, flexible barriers that maintain leak-proof integrity while accommodating large volumes. The textile intermediate layer further reinforces this flexible structure to prevent punctures and maintain reliability.
3Productivity
If sealing time is reduced to meet shipping standards, then productivity is improved, but sealing reliability deteriorates
Solution Approach 1:
The container is pre-configured with the inner bladder and intermediate textile layer assembled before use. This preliminary preparation allows the sealing operation to focus only on the final connection between the bladder and container, significantly reducing sealing time while maintaining reliability through pre-verified component interfaces.
Solution Approach 2:
The nested structure with the inner bladder positioned within the pre-assembled container and intermediate layer allows for efficient sealing. The bladder is inserted and sealed within the protective textile sleeve, enabling quick connection to the container body while the nested arrangement ensures proper alignment and sealing integrity without requiring complex sealing procedures.
4Weight of moving object
If container weight is reduced to improve portability, then ease of operation is improved, but puncture resistance deteriorates
Solution Approach 1:
The container employs thin, flexible shell structures for both the outer container and inner bladder, minimizing weight while maintaining integrity. These flexible thin films provide adequate puncture resistance for their intended applications, with the outer shell protecting against external punctures and the inner bladder containing contents without requiring heavy reinforcement.
Solution Approach 2:
The intermediate layer uses composite textile materials with optimized fiber arrangements (specific grain patterns) that provide high puncture resistance relative to their weight. This lightweight composite textile layer bridges the gap between the outer flexible container and inner bladder, adding puncture protection without significantly increasing overall container weight.
Data Source
AI summary
A soft transfer case for contaminated material is provided. The transfer case includes a film-laminated, woven textile exterior layer as a pouch. The cylinder is capable of being clamped at each end of the cylinder. An open end elastomeric bladder for containing the contaminated material is contained by the exterior layer. The bladder includes a seam to seal the open end with the material contained therein. Upon pressurization of the bladder, the exterior layer expands and a restraining force is generated between the textile layer and the clamps. A variant of the soft transfer case provides soft end terminations formed by fold-over regions at fold lines in the exterior layer. The exterior layer is fitted with matching locking straps affixed along a longitudinal exterior. The locking straps mechanically lock together. Lifting handles are also affixed to the exterior strength layer to ease transport of the transfer case.