Composite Molded Pulp Products Using Fruit Pomace
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Solution Overview
Problem
The production of molded pulp packaging materials relies heavily on wood pulp and recycled paper, which are becoming scarce due to increasing prices and reduced availability, and these materials are often water-soluble, limiting their usage.
Innovation Solution
The use of fibrous fruit or vegetable pomace as a substitute for fibrous paper-based materials, combined with cellulose nanofibers and optional additives, to create composite molded pulp products with improved water resistance and mechanical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wood pulp and recycled paper are used as fiber sources for molded pulp packaging, then the mechanical properties and water solubility are acceptable, but the availability and cost are deteriorating due to increasing prices and reduced availability
Solution Approach 1:
The invention changes the chemical composition parameters of the fiber slurry by incorporating fruit pomace (containing pectin, hemicellulose, and lignin) alongside traditional wood pulp or recycled paper. This compositional parameter change allows the use of alternative, more abundant, and potentially cheaper fiber sources while maintaining the necessary mechanical properties and controlled water solubility for molded pulp packaging applications
Solution Approach 2:
The invention creates a composite fiber slurry system combining fruit pomace with wood pulp or recycled paper. This composite approach leverages the complementary properties of different fiber sources - the structural integrity from traditional fibers and the binding properties from fruit pomace components - to achieve reliable molded pulp products from alternative material sources
2Object-affected harmful factors
If traditional fiber-based molded pulp is used, then the material is biodegradable, but the water solubility is too high which limits its usage in certain applications
Solution Approach 1:
The invention modifies the water solubility parameter of molded pulp by incorporating fruit pomace components (pectin, hemicellulose, lignin) that alter the hydrophilic nature of traditional fiber slurries. This parameter change reduces excessive water solubility while preserving biodegradability, making the material suitable for applications requiring controlled moisture resistance
Solution Approach 2:
The fruit pomace components act as intermediary substances between the hydrophilic fiber network and the external environment. These intermediaries (pectin, hemicellulose, lignin) modify the interaction between water and the fiber matrix, reducing water penetration and solubility while maintaining the biodegradable character of the material
3Adaptability or versatility
If fibrous fruit pomace is used to substitute paper-based materials, then the reliance on traditional fiber sources is reduced, but the interfacial compatibility and mechanical properties need enhancement
Solution Approach 1:
The invention creates a composite fiber system where fruit pomace particles are embedded within a matrix of traditional fibers. This composite structure enhances mechanical properties through synergistic interactions - the fruit pomace provides binding agents (pectin, hemicellulose, lignin) that improve interfacial adhesion between fibers, while the traditional fibers provide structural framework, achieving superior mechanical strength and interfacial compatibility
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 reduces the reliance on traditional fiber sources, enhances the interfacial compatibility and mechanical properties of molded pulp products, and allows for the sustainable production of industrial products with improved water resistance and flexibility.
Implementation Method 1
CNF may enhance the adhesion properties due to its high surface area for improving the interfacial compatibility between fibers in a composite
Implementation Method 2
The adhesion property (e.g. inter-diffusion, mechanical interlocking, capillary forces, Coulomb forces, hydrogen bonding, and van der Waals forces) of cellulose has been recognized for its use in fiber-based composite materials
Implementation Method 3
The adhesion property (e.g. inter-diffusion, mechanical interlocking, capillary forces, Coulomb forces, hydrogen bonding, and van der Waals forces) of cellulose has been recognized for its use in fiber-based composite materials
Implementation Method 4
The adhesion property (e.g. inter-diffusion, mechanical interlocking, capillary forces, Coulomb forces, hydrogen bonding, and van der Waals forces) of cellulose has been recognized for its use in fiber-based composite materials
Implementation Method 5
The adhesion property (e.g. inter-diffusion, mechanical interlocking, capillary forces, Coulomb forces, hydrogen bonding, and van der Waals forces) of cellulose has been recognized for its use in fiber-based composite materials
Data Source
AI summary
Composite molded pulp products prepared from fruit or vegetable-based pomace, fibrous paper-based materials, and cellulose nanofiber and methods for preparing the same are provided.