Molded Fiber Packaging with Loose Plastic Insert
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Solution Overview
Problem
Conventional packaging systems for food and non-food products face challenges in providing hygienic protection, extending shelf life, and reducing environmental impact, particularly due to high carbon dioxide emissions, water consumption, and disposal costs associated with plastic-based systems, as well as issues with composite materials like cardboard laminated with plastic films.
Innovation Solution
A packaging system comprising a molded fiber part as the outer structure and a single-layer or multi-layer plastic film insert, where the molded fiber part has degassing openings and a surface finish, allowing for loose contact and easy separation, thereby reducing plastic usage by up to 70% and facilitating recycling and composting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional plastic trays are used for packaging, then product protection and shelf life extension are achieved, but environmental impact increases due to high carbon dioxide emissions, water consumption, and disposal costs
Solution Approach 1:
The patent changes the material parameter from conventional plastic to molded fiber with plastic film insert, maintaining protective function while reducing environmental impact. The fiber tray with controlled bonding areas achieves both product protection and reduced CO2 emissions/water consumption
Solution Approach 2:
The patent uses a composite structure combining molded fiber material with plastic film insert. This composite approach provides the protective benefits of plastic while using a biodegradable fiber base, reducing overall environmental impact compared to conventional plastic trays
2Reliability
If cardboard laminated with plastic film is used for packaging, then product protection is improved, but disposal costs and complexity increase due to composite material difficulty
Solution Approach 1:
The patent segments the packaging into distinct functional areas: the molded fiber tray body and the plastic film insert bonded only to upper peripheral areas. This segmentation allows the plastic film to be easily separated and removed for recycling, reducing disposal complexity while maintaining product protection
Solution Approach 2:
The patent extracts the plastic film from full-surface bonding to selective bonding only at upper peripheral areas. This extraction allows the plastic component to be easily separated and removed, simplifying disposal and recycling processes while maintaining adequate product protection
3Stability of the object's composition
If the insert is bonded to the entire inner surface of the molded fiber part, then structural stability is improved, but separation difficulty and disposal complexity increase
Solution Approach 1:
The patent applies local quality by bonding the plastic film insert only to specific upper peripheral areas of the molded fiber part, rather than the entire surface. This localized bonding provides sufficient structural stability at critical areas while enabling easy separation and disposal elsewhere
4Shape
If molded fiber parts with smooth surface finish are used, then aesthetic appearance and product presentation are improved, but manufacturing complexity increases
Solution Approach 1:
The patent uses the plastic film insert to provide the smooth aesthetic surface finish, while the molded fiber part maintains its structural function. This composite approach achieves desirable surface appearance without significantly increasing the complexity of the fiber molding process itself
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 system provides a lightweight, stable, and eco-friendly packaging solution that maintains product freshness, extends shelf life, and simplifies disposal and recycling, while being compatible with existing packaging machinery without the need for complex adjustments.
Implementation Method 1
the molded fiber part has at least one, preferably several, degassing openings arranged in regular sections at least in the bottom area
Implementation Method 2
The insert with the remaining areas of the inside of each side wall down to the bottom is essentially of the same shape, but forms a loose contact surface
Implementation Method 3
the inside of each side wall of the molded fiber part is bonded to the insert only in its upper part
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
The invention relates to a packaging system consisting of a packaging container and a separate packaging element for closing the packaging container, wherein the packaging container has a fiber molding as an outer molded structure and a molded single- or multilayer plastic film as a molded insert. The inner face of each lateral wall of the fiber molding is bonded to the insert solely in the upper sub-region of the lateral wall in each case, preferably on the upper edge of each lateral wall or on a peripheral flange optionally provided there. The insert together with the respective remaining regions of the inner face of each lateral wall extending to the base form a contact surface which has substantially the same shape but which is loose, and the fiber molding has at least one gas-venting opening, preferably multiple gas-venting openings, arranged in regular sections at least in the base region.