3D Fluff Pulp Molding Without Water-Intensive Drying

Solution Overview

Problem

Conventional moulded pulp products require significant energy for drying and have a high carbon footprint due to the use of water as a carrier, which is not sustainable.

Innovation Solution

A method using fluff pulp material with additives and an air-laid process to form 3-dimensional products, reducing the need for water and energy by using biodegradable biopolymers like PBS and MFC, and incorporating in-mould heat treatments to enhance strength and stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If water is used as a carrier in conventional moulded pulp manufacturing, then the manufacturing process is feasible, but the energy consumption for drying increases significantly and the carbon footprint increases

Engineering Contradiction:

Improvemanufacturing process feasibilityVSAvoidenergy consumption for drying

Core Design Contradiction:

Ease of manufactureVSUse of energy by moving object

Solution Approach 1:

The invention extracts and eliminates water as the carrier medium from the manufacturing process. Instead of using water-based carriers, the patent employs an air-laid process where fluff pulp material is deposited directly onto the mould using air flow, thereby removing the need for subsequent drying operations and significantly reducing energy consumption and carbon footprint

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The invention uses pneumatic principles by employing air flow to carry and deposit the fluff pulp material onto the mould surface. This air-laid process replaces the water-based carrier system, allowing the pulp to be formed without moisture that would require evaporation and drying, thus reducing energy requirements

Inventive Principle:

Principle #29Pneumatics and hydraulics

2Ease of manufacture

If water is used as a carrier in conventional moulded pulp manufacturing, then the manufacturing process is feasible, but the carbon footprint increases

Engineering Contradiction:

Improvemanufacturing process feasibilityVSAvoidcarbon footprint

Core Design Contradiction:

Ease of manufactureVSObject-generated harmful factors

Solution Approach 1:

The invention extracts and eliminates water as the carrier medium from the manufacturing process. Instead of using water-based carriers, the patent employs an air-laid process where fluff pulp material is deposited directly onto the mould using air flow, thereby removing the need for subsequent drying operations and significantly reducing energy consumption and carbon footprint

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The invention uses pneumatic principles by employing air flow to carry and deposit the fluff pulp material onto the mould surface. This air-laid process replaces the water-based carrier system, allowing the pulp to be formed without moisture that would require evaporation and drying, thus reducing energy requirements

Inventive Principle:

Principle #29Pneumatics and hydraulics

3Strength

If conventional moulding processes are used, then product strength can be achieved, but the manufacturing rate is limited due to drying requirements

Engineering Contradiction:

Improveproduct strengthVSAvoidmanufacturing rate

Core Design Contradiction:

StrengthVSProductivity

Solution Approach 1:

The invention extracts and eliminates water as the carrier medium from the manufacturing process. Instead of using water-based carriers, the patent employs an air-laid process where fluff pulp material is deposited directly onto the mould using air flow, thereby removing the need for subsequent drying operations and significantly reducing energy consumption and carbon footprint

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The invention enables continuous manufacturing by eliminating the drying step. The air-laid process allows for continuous deposition and forming of the pulp product directly in the mould, removing the interruptive drying phase and thereby increasing manufacturing rate and productivity

Inventive Principle:

Principle #20Continuity of useful action

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

Reduces energy consumption and carbon footprint, improves manufacturing efficiency, and enhances product strength and sustainability by using biodegradable materials that can decompose at ambient temperatures.

Implementation Method 1

providing an air-laid flow of fluff pulp material to a 3-dimensional shaped mould

Methodology Applied

Scientific EffectAir flow: Convection

Implementation Method 2

Forming may include additional heat treatments to activate and cure one or more of the additives that may be provided to the fluff pulp

Methodology Applied

Scientific EffectHeat treatment: Heating

Data Source

PatentUS12509827B2Method for the manufacturing a 3-dimensional shaped product from a fluff pulp material and such product

Publication Date: 2025.12.30 HUHTAMAKI MOLDED FIBER TECH

AI summary

The present invention relates to a method for manufacturing a 3-dimensional shaped product from a fluff pulp material and such product. The method according to the invention comprises the steps of:providing a fluff pulp material;providing an air-laid flow of fluff pulp material to a 3-dimensional shaped mould;forming the product in the mould; andreleasing the 3-dimensional shaped product from the mould.