Unit Dose Articles With Locally Densified Shell-Core Structure
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Solution Overview
Problem
Existing methods for manufacturing unit dose consumer products with a homogeneous composition and shell-core structure are inadequate.
Innovation Solution
A method involving the formation of a non-woven mat from semi-solid strands of meltable materials, which are locally densified to create a shell-core structure, allowing for the integration of otherwise incompatible materials without negative interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional methods are used to manufacture unit dose articles, then production is possible, but achieving a homogeneous composition with shell-core structure is difficult
Solution Approach 1:
The patent applies parameter changes by controlling the melting and solidification of materials during the forming process. By adjusting temperature parameters and material flow characteristics, the process achieves homogeneous composition while creating the shell-core structure, resolving the contradiction between manufacturing precision and process complexity
Solution Approach 2:
The invention uses composite materials comprising multiple components that are incompatible under conventional conditions. By forming these materials into a homogeneous shell-core structure through the described process, the patent achieves precise manufacturing of complex multi-material articles that would otherwise be difficult to produce
2Adaptability or versatility
If incompatible materials are mixed together, then functional integration is possible, but negative interactions between materials occur
Solution Approach 1:
The patent applies local quality by creating distinct shell and core regions with different material compositions. The shell provides a protective barrier that isolates incompatible materials from direct contact, while the core contains the functional ingredients. This spatial differentiation allows integration of incompatible materials without negative interactions, maintaining both versatility and reliability
Solution Approach 2:
The invention employs the nesting principle by placing the core material containing incompatible components inside a protective shell. This nested structure allows multiple incompatible materials to coexist in a single unit dose article without direct interaction, enabling functional integration while maintaining material stability
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 the production of discrete unit dose objects with a shell-core structure, facilitating the coexistence of otherwise incompatible materials and providing enhanced consumer benefits.
Implementation Method 1
providing semi-solid stands of a meltable material
Implementation Method 2
the surface of the discrete units comprises a locally densified portion
Data Source
AI summary
A method for forming an object includes steps of forming a non-woven mat from one or more strands of meltable material and subsequently forming discrete units from the non-woven mat where portions of the surface of the formed discrete units are locally densified.