Nested Container System for Precise Polyol Additive Dosing
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Solution Overview
Problem
The manufacturing process of polyurethanes is complicated by the need for accurate dosing of additives before mixing with the polyol reactant, which lengthens the process and increases costs, and there are challenges in accurately preparing prepolymers with precise isocyanate dosage.
Innovation Solution
A container system with a nested second container for additives that can be opened externally to release contents into a first container, allowing for precise mixing of polyol and additives, including glycols, amines, and flame retardants, using a piercing rod with mixing blades for automated mixing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If additives are mixed with polyol before production, then the manufacturing process is simplified, but the dosing accuracy and mixing timing control become problematic
Solution Approach 1:
The container is divided into two separate compartments: a first container for polyol and a second container for additives. This segmentation allows each component to be dosed and stored separately with precise control, while simplifying the manufacturing process by eliminating the need for complex pre-mixing equipment. The additives are only introduced into the polyol compartment immediately before production, ensuring both simplicity and precision.
2Manufacturing precision
If additives are stored separately from polyol, then dosing precision is improved, but the manufacturing process complexity increases
Solution Approach 1:
The second container for additives is nested inside the first container for polyol. This nested structure allows separate storage and precise dosing of additives while maintaining a compact, integrated container system. The additives container can be opened externally to release contents into the polyol compartment, providing precise control without requiring complex external handling equipment.
3Manufacturing precision
If additives are added late in the process, then dosing control is improved, but the production time increases
Solution Approach 1:
The additives are pre-loaded into the second container during container preparation, but remain sealed until the moment of production. This preliminary preparation allows the container to be ready for immediate use, eliminating setup time during production. The additives are introduced into the polyol compartment in a single rapid operation, ensuring both precise control and efficient production timing.
Data Source
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AI summary
A container system (1) for products to be mixed, comprising a first container (2) for containing a first product, a lid (2a) for closing said first container and a second container (3) which is housed inside the first container; a portion of said second container extending through the lid and having a reclosable opening (18) on the outside of the first container. The bottom (14) of the second container can be opened for releasing the contents of the second container into the product present inside the first container.