Cellulose Containers Dry Wet Strength Chemistry
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Solution Overview
Problem
Cellulose-based containers face challenges in maintaining strength, especially under high humidity conditions due to water absorption by cellulosic fibers, leading to weakening and potential damage, and existing solutions do not adequately address the need for both dry and wet strength enhancements.
Innovation Solution
A cellulose-based material treated with both dry strength chemistry preparations, such as glyoxalated polyacrylamide, and wet strength chemistry preparations, like polyamide resin, to enhance the strength of containers, providing a synergistic effect that improves performance in humid environments and allows for recyclability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If containers are made from cellulosic fibers, then they are recyclable and environmentally friendly, but they weaken due to water absorption in humid conditions
Solution Approach 1:
The patent applies composite materials by combining cellulosic fibers with two different chemistry preparations: a dry strength preparation (such as polyamide-polyepoxide resins) and a wet strength preparation (such as aldehyde-functionalized polymers). This creates a composite fiber structure where each component addresses specific strength requirements, allowing the container to maintain both recyclability and enhanced strength properties.
2Adaptability or versatility
If containers are designed for high humidity environments, then they can be used in food supply chain activities, but they suffer from strength loss due to humid conditions
Solution Approach 1:
The patent applies local quality by providing different types of strength enhancement at different stages: dry strength preparation provides strength during storage and handling in dry conditions, while wet strength preparation provides strength during humid conditions such as food supply chain activities. This localized approach ensures optimal performance in each specific condition.
Solution Approach 2:
The patent applies preliminary action by pre-treating the cellulosic fibers with both dry strength and wet strength chemistry preparations during the manufacturing process. This preliminary treatment ensures that the fibers are already strengthened before the container encounters humid conditions, preventing strength loss rather than attempting to repair it afterward.
3Ease of manufacture
If only dry strength chemistry is used, then manufacturing is simpler, but wet strength in humid conditions is insufficient
Solution Approach 1:
The patent applies merging by combining two different chemistry preparation processes into a single integrated manufacturing workflow. The dry strength preparation and wet strength preparation are applied in sequence during fiber processing, creating a unified treatment that delivers both dry and wet strength benefits without requiring separate manufacturing lines or complex additional steps.
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
The treated cellulose-based material demonstrates significant strength improvement, including increased short-span compression strength and box compression strength, even at high relative humidity, while being recyclable, thus addressing the weaknesses of traditional containers.
Implementation Method 1
cellulosic fibers are treated with i) a dry strength chemistry preparation
Implementation Method 2
cellulosic fibers are treated with ii) a wet strength chemistry preparation
Data Source
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AI summary
The present disclosure provides cellulose-based material and containers utilizing the cellulose-based material. More particularly, the present disclosure provides cellulose-based material comprising strength-enhancing preparations and improved containers made with the strength-enhanced cellulose-based materials.