Barrier Paper Composition for Sealable Fluid Containers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing paper-based products fail to combine heat-sealability, gluing capability, and calibrated breakage with rigidity and fragility, while maintaining barriers to water, fats, oils, and gases, and adequate printability.
Innovation Solution
A paper material comprising a mixture of cellulose, cotton, and synthetic fibers, with polymeric substances for strength and water resistance, inorganic fillers for fragility, and surface treatments with polyols and acrylic polymers for barriers, along with aluminium salts, ensuring mechanical properties and printability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If paper-based products are made with cellulose fibres and synthetic polymers to contain liquids, then barrier properties are improved, but heat-sealability and gluing capability are lost
Solution Approach 1:
The invention uses a composite material system consisting of a paper substrate (cellulose fibres) combined with a specific coating layer containing polymeric binder and inorganic filler. This composite structure provides both barrier properties and heat-sealability/gluing capability, resolving the contradiction between protection and adaptability.
Solution Approach 2:
The invention modifies the physical and chemical parameters of the paper surface through coating with specific polymers and inorganic fillers. This changes the surface properties to enable heat-sealing and gluing while maintaining the bulk barrier properties, thus resolving the contradiction between barrier function and sealing capability.
2Strength
If paper material is made rigid to maintain container structure, then structural stability is improved, but calibrated breakage capability is reduced
Solution Approach 1:
The invention applies different properties to different parts of the container structure. The body of the container maintains high rigidity for structural stability, while specific areas (such as the base or designated break points) are engineered with controlled fragility features through the coating composition and fiber arrangement, enabling calibrated breakage when needed.
Solution Approach 2:
The container structure is divided into zones with different mechanical properties. The coating and fiber composition are varied locally to create rigid sections for structural support and fragile sections for controlled breaking, allowing both rigidity and calibrated breakage to coexist in different parts of the same container.
3Ease of operation
If inorganic fillers are added to impart fragility, then calibrated breakage is improved, but mechanical strength is reduced
Solution Approach 1:
The invention carefully controls the type, amount, and distribution of inorganic fillers to achieve the desired balance. By adjusting filler parameters (size, shape, concentration) and combining them with specific polymeric binders, the material achieves both calibrated breakage capability and adequate mechanical strength for container handling.
Solution Approach 2:
The invention creates a composite where inorganic fillers (providing fragility) are embedded in a polymeric matrix (providing mechanical strength). This composite structure allows the filler particles to create stress concentration points for controlled breaking while the polymer binder maintains overall structural integrity and mechanical strength.
4Object-affected harmful factors
If surface coating is applied to provide barrier properties, then resistance to water and gases is improved, but printability is reduced
Solution Approach 1:
The invention applies surface coating selectively or with controlled thickness to provide barrier properties in areas where they are most needed, while maintaining surface characteristics in other areas that are optimal for printing. The coating composition is designed to provide barrier function without creating an overly smooth or non-porous surface that would prevent ink absorption.
Solution Approach 2:
The invention optimizes the coating parameters (thickness, composition, porosity) to achieve a balance between barrier performance and printability. By controlling the physical and chemical parameters of the coating layer, it provides sufficient resistance to water and gases while maintaining adequate surface properties for quality printing.
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 material achieves heat-sealability, gluing capability, calibrated breakage, and effective barriers to fluids and gases, with high rigidity and fragility, and maintains excellent print quality.
Implementation Method 1
at least one polymeric substance, adapted to impart to the mixture of fibres mechanical strength (dry and wet) and water resistance
Implementation Method 2
at least one inorganic filler, adapted to impart to the material good characteristics of machinability, chemical stability and fragility
Implementation Method 3
aluminium salts in addition to at least one polyol and/or acrylic polymer and/or starch, adapted to impart a barrier property
Data Source
AI summary
A paper material, comprising a base substrate having the following formulation: - a mixture of cellulose fibres, cotton fibres and synthetic fibres, between 50% and 80% by weight - at least one polymeric substance, between 1% and 10% by weight - at least one inorganic filler, between 10% and 50% by weight - at least one polyol and/or acrylic polymer and/or starch, between 1% and 10% by weight - aluminium salts, between 1% and 30% by weight the aluminium salts, the at least one polyol and/or acrylic polymer and/or starch being present in at least one surface of the paper material.