Process for making a fibrous water soluble product
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Solution Overview
Problem
Current methods for manufacturing fibrous water soluble products with particles face challenges such as interference with substrate formation, uncontrolled dissolution, and difficulty in controlling particle distribution, leading to variable product quality and increased costs.
Innovation Solution
A travelling mask process using a discretizing unit with pockets to decouple a continuous feed of particles into individual doses, allowing precise control over particle deposition onto a moving substrate, accommodating various particle types and manufacturing rates, and ensuring economic feasibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If particles are loaded onto a fibrous substrate to provide active agents, then product functionality is improved, but particle distribution control becomes difficult and dissolution is compromised
Solution Approach 1:
The continuous substrate is divided into discrete pockets that individually contain specific amounts of particles. This segmentation allows precise control over particle distribution while maintaining consistent dissolution characteristics for each unit dose.
Solution Approach 2:
Different regions of the substrate are given different properties by concentrating particles within specific pockets rather than uniformly distributing them. This creates localized areas of high particle concentration that provide consistent functionality while controlling overall distribution.
2Ease of operation
If multi-ply articles are fabricated from fibrous substrates to improve handleability, then consumer preference is enhanced, but bonding and cutting difficulty increases due to caliper variation
Solution Approach 1:
The multi-ply article is divided into multiple unit doses, each with consistent caliper and particle loading. This segmentation allows each unit to be handled easily while maintaining uniform dimensions that simplify bonding and cutting processes.
Solution Approach 2:
The problematic continuous multi-ply structure is extracted into discrete unit doses. This removes the caliper variation issue that causes bonding and cutting difficulties while preserving the handleability benefits of multi-ply construction.
3Productivity
If a continuous substrate is used to improve manufacturing efficiency, then productivity is enhanced, but particle distribution control and product consistency become challenging
Solution Approach 1:
The continuous substrate manufacturing process is combined with segmentation into discrete pockets that individually receive controlled amounts of particles. This maintains the efficiency of continuous production while achieving precise particle distribution control through the pocket structure.
Solution Approach 2:
The pockets act as an intermediary structure between the continuous substrate and particle loading process. They enable precise particle distribution control while allowing the overall continuous manufacturing process to maintain high productivity.
4Reliability
If particles are uniformly distributed on the substrate to maximize active agent delivery, then product functionality is improved, but dissolution control becomes unmanageable
Solution Approach 1:
Particles are segmented into discrete pockets rather than being uniformly distributed across the entire substrate. This segmentation allows each pocket to dissolve independently and predictably, maintaining consistent dissolution control while ensuring complete active agent delivery through the collection of all pockets.
Data Source
AI summary
Included herein are manufacturing methods relating to water soluble fibrous substrates with particles and an apparatus to place the particles on the water soluble fibrous substrate.