Moulded Fiber Packaging Lamination for Controlled Stretching

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional manufacturing processes for moulded fiber packaging units with laminate layers require additional steps and equipment, and the stretch pattern of the laminate layer is difficult to predict and control, leading to undesired product loss and increased costs.

Innovation Solution

A method for manufacturing moulded fiber packaging units with a laminate layer that involves preparing mouldable fiber material, forming it into a primary packaging unit, bringing it to a lamination temperature, positioning a lamination plug with the laminate layer, and attaching it to the fiber material using a combination of blowing and drawing techniques without adhesives, ensuring controlled stretching and bonding.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a separate lamination operation is performed after moulding the packaging unit, then the laminate layer can be applied to the fiber material, but additional manufacturing steps and equipment are required, increasing device complexity and manufacturing cost

Engineering Contradiction:

Improvelaminate layer applicationVSAvoidmanufacturing process

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the lamination operation with the moulding process by integrating the laminate layer application into the mould cavity. The laminate layer is positioned on the moulded fiber packaging unit within the same moulding apparatus, eliminating the need for a separate post-moulding lamination operation. This merging of operations reduces device complexity and manufacturing steps while ensuring reliable laminate attachment.

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If conventional separate lamination operation is used, then the laminate layer can be glued to the fiber material, but the stretch pattern of the laminate layer is difficult to predict and control, resulting in undesired product loss

Engineering Contradiction:

Improvelaminate layer attachmentVSAvoidstretch pattern control

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The patent applies the laminate layer to the moulded fiber packaging unit while it is still within the mould cavity, before the unit is removed and cooled. The laminate layer is positioned and stretched in situ within the mould, allowing precise control over the stretch pattern. This preliminary action ensures that the laminate conforms accurately to the packaging unit geometry, eliminating prediction and control issues associated with post-moulding lamination.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If additional manufacturing steps and equipment are used for separate lamination, then the laminate layer can be applied, but manufacturing cost and time increase, reducing productivity

Engineering Contradiction:

Improvelaminate layer applicationVSAvoidmanufacturing speed

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent merges the lamination operation with the moulding process, allowing both operations to be performed simultaneously within the same mould cavity. This eliminates the need for separate lamination equipment and additional manufacturing steps, thereby reducing manufacturing time and increasing productivity while maintaining reliable laminate layer application.

Inventive Principle:

Principle #5Merging (Combining)

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 method reduces manufacturing complexity, achieves high-quality packaging units with a controlled laminate stretch pattern, maintains structural integrity, and allows for biodegradable and compostable materials, while minimizing material usage and energy consumption.

Implementation Method 1

bringing the primary packaging unit to a lamination temperature

Methodology Applied

Scientific EffectHeating: Heating

Implementation Method 2

controlling a stretch pattern of the laminate layer

Methodology Applied

Scientific EffectDeformation: Deformation

Data Source

PatentEP4635715A1Method and system for manufacturing a moulded fiber packaging unit with a laminated layer

Publication Date: 2025.10.22 HUHTAMAKI MOLDED FIBER TECH

Figure 1A~1B
Figure 2
Figure 3A

AI summary

The invention relates to a method (2) for manufacturing a moulded fiber packaging unit (46, 52, 72, 92, 102, 202, 302, 402, 502, 602), the method comprising the steps of: - preparing (4) a mouldable fiber material (22); - forming (6) the mouldable fiber material in a mould into a primary packaging unit (30) with a compartment; - bringing (10) the primary packaging unit to a lamination temperature; - providing (13a) a laminate layer (58); - positioning (12) a lamination plug (54) with the laminate layer at least partly in the compartment of the primary packaging unit; and - attaching (16) the laminate layer to the fiber material of the packaging unit.