Mobile Molding of Expandable Nonwovens for On-Site 3D Forming
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Solution Overview
Problem
Transporting large, expanded nonwoven materials is costly and environmentally detrimental, and there is a need for more customization opportunities in producing composite nonwoven products, while polyurethane foams pose health, safety, and environmental concerns.
Innovation Solution
A mobile molding system using a vehicle equipped with molds and heating/cooling systems to expand and shape nonwoven substrates on-site, allowing for customizable production of three-dimensional objects like furniture and seating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If nonwoven materials are produced and expanded in a factory then transported to consumers, then production efficiency is improved, but transportation costs increase and environmental impact worsens
Solution Approach 1:
The manufacturing process is segmented into two phases: compression phase (factory) and expansion phase (consumer location). The nonwoven material is compressed into a compact form for efficient transport, then expanded at the destination to form the final product. This segmentation allows the material to be produced efficiently in a factory while minimizing transportation environmental impact.
Solution Approach 2:
The expanded nonwoven structure is nested into a compressed state for transportation. The material contains inherent memory of its expanded configuration, allowing it to be collapsed into a small package that fits within the vehicle, then revert to its full expanded form at the consumer location without damage.
2Productivity
If nonwoven materials are produced and expanded in a factory then transported to consumers, then production efficiency is improved, but transportation costs increase
Solution Approach 1:
The manufacturing process is segmented into compression at factory and expansion at consumer location. This allows the material to be transported in a compact, space-efficient state, reducing transportation costs while maintaining production efficiency benefits.
3Ease of operation
If polyurethane foams are used for cushioning materials then comfort is improved, but health and safety risks increase
Solution Approach 1:
The material type is changed from polyurethane foam to thermally expandable nonwoven material. This parameter change maintains the comfort function through thermal expansion and molding capabilities while eliminating the health and safety risks associated with polyurethane foam production and use.
Solution Approach 2:
The nonwoven material utilizes phase transition during thermal expansion. The material is heated to a specific temperature range where it expands and molds into the desired cushioning shape, providing comfort similar to foam but without the associated health risks. The phase transition enables the material to achieve its functional form only when needed.
4Ease of operation
If polyurethane foams are used for cushioning materials then comfort is improved, but environmental sustainability worsens
Solution Approach 1:
The material composition is changed from non-recyclable polyurethane foam to recyclable nonwoven material. This parameter change maintains comfort through thermal expansion capabilities while improving environmental sustainability through recyclability and elimination of hazardous production processes.
5Adaptability or versatility
If large expanded nonwoven materials are transported to consumers then product availability is improved, but transportation efficiency worsens
Solution Approach 1:
The expanded nonwoven material is nested into a compressed state for transportation. The material's ability to be collapsed into a compact form while retaining its expanded configuration memory allows efficient space utilization during transport, improving transportation efficiency while maintaining product availability.
Solution Approach 2:
The delivery process is segmented into transporting compressed material and expanding at destination. This segmentation allows the transportation system to handle compact, efficient packages while the final expansion occurs at the consumer location, optimizing both transportation efficiency and product availability.
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 on-site manufacturing of customized composite structures with reduced costs and environmental impact, offering consumer involvement and efficient supply chain management.
Implementation Method 1
heating the one or more nonwoven substrates so as to cause the one or more nonwoven substrates to expand and fill the one or more molds
Implementation Method 2
cooling the at least one object to provide the at least one object with a shape that at least partially assumes a configuration defined by the mold
Data Source
AI summary
A mobile molding system, comprising a vehicle and one or more molds arranged on the vehicle configured for receiving one or more expandable nonwoven substrates, heating said one or more expandable nonwoven substrates so as to cause said one or more expandable nonwoven substrates to expand and fill the one or more molds with one or more expanded nonwoven containing articles of three dimensional shape, and releasing said one or more expanded nonwoven containing articles of three dimensional shape from the one or more molds is provided. Methods for manufacturing three dimensional objects using the mobile molding system are also provided.