Paper Bag Disintegration via Internal Wetting Agents
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Solution Overview
Problem
Conventional paper bags used for dry, pulverulent or granular materials like cement and mortar do not fully disintegrate during mixing with water, leaving residues and posing challenges in storage and handling due to moisture sensitivity and low basis weight, which affects the mixing process and product quality.
Innovation Solution
Incorporating disintegration agents into the bag contents that are activated by water during mixing, allowing the paper bag to maintain strength until interaction with the agents, which then facilitate complete disintegration without affecting the mixed product, using substances like wetting agents, dispersants, or alkaline bases to control solubility and improve disintegration efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If paper bags with low basis weight are used to ensure disintegration during mixing, then the bag can disintegrate more easily, but the bag has poor storage stability and moisture resistance
Solution Approach 1:
The patent changes the parameter of basis weight to use higher-weight paper (100-200 g/m²) that provides both storage stability and disintegration capability. This resolves the contradiction by finding an optimal parameter range that satisfies both requirements simultaneously.
2Reliability
If conventional paper bags are used without disintegration agents, then the bag maintains strength during storage, but the bag does not fully disintegrate during mixing leaving residues
Solution Approach 1:
The patent introduces disintegration agents as intermediary substances that facilitate the breakdown of paper bags during mixing. These agents act as mediators between the paper bag structure and the mixing process, enabling complete disintegration without compromising storage stability.
Solution Approach 2:
The patent modifies the chemical composition parameters of the bag contents by incorporating disintegration agents such as surfactants, enzymes, or alkaline substances. These parameter changes enable the paper bag to disintegrate completely during mixing while maintaining strength during storage.
3Reliability
If higher basis weight paper is used to improve storage stability, then the bag has better moisture resistance, but the bag requires longer mixing time and more energy to disintegrate
Solution Approach 1:
The disintegration agents serve as intermediaries that accelerate the breakdown of higher-weight paper during mixing. This resolves the contradiction by enabling robust paper bags to disintegrate quickly without compromising storage stability.
Solution Approach 2:
The patent changes the chemical parameters of the mixing system by adding disintegration agents that reduce the energy and time required to disintegrate higher-weight paper, thus improving productivity while maintaining storage stability.
4Object-generated harmful factors
If disintegration agents are added to bag contents, then complete disintegration is achieved, but the composition complexity of the product increases
Solution Approach 1:
The patent modifies the compositional parameters of the bag contents by incorporating disintegration agents. These agents change the chemical environment to facilitate paper breakdown, achieving complete disintegration while managing composition complexity through careful selection of effective substances.
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
This approach ensures complete disintegration of the paper bag during mixing, reducing mixing times and energy requirements, and allows for the use of more robust, higher-weight paper bags with multiple layers, minimizing residual bag pieces and improving storage stability.
Implementation Method 1
the water dissolves the paper bag when its contents and the paper bag are mixed together... the paper of the bags disintegrates with the product into its individual constituents, i.e. the 'bonded' cellulose fibers are separated
Implementation Method 2
Incorporating disintegration agents into the bag contents that are activated by water during mixing... using substances like wetting agents, dispersants, or alkaline bases to control solubility and improve disintegration efficiency
Data Source
AI summary
The invention relates to a paper bag having bag contents to be mixed with water. e.g. having a building material such as dry mortar, cement, gypsum, lime and refractory compounds, wherein it is already known that the paper bag contains a disintegration agent so that the bag disintegrates when the bag contents and water are mixed together, and the paper bag does not have to be disposed of separately. A disadvantage of this is that these bags are not very stable mechanically and in terms of storage. According to the invention, the bag contents comprise the disintegration agent for the paper bag, meaning that the bag loses its stability only when its contents comes into contact with water and thus the disintegration agent becomes effective. The disintegration agent or one of the disintegration agents is preferably a wetting agent, a dispersing agent, a surfactant, a flow agent, a disintegration aid (debonding agent) for paper disintegration into paper pulps, or a base. The at least one disintegration agent can also be a substance combination, wherein one part of the substance combination is contained in the material of the paper bag (bag paper or bag adhesive) and the other part of the substance combination is contained in the bag contents.