Dual-Bag Packaging with Temporary Attachment for Recycling
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Solution Overview
Problem
Existing packaging bags made of flexible plastic film face difficulties in recycling while maintaining product preservation, visual commercial communication, and filling functionality.
Innovation Solution
A dual-bag system comprising an outer bag for commercial communication and an inner bag for product preservation, both made from thin films, are temporarily attached at the filling opening and can be easily separated for recycling after use, using techniques like gluing or localized welding, allowing for separate processing and recycling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single integrated packaging bag is used, then structural simplicity and manufacturing ease are maintained, but recycling difficulty increases
Solution Approach 1:
The packaging bag is divided into two separate bags: an outer bag for commercial communication and an inner bag for product preservation. This segmentation allows each bag to be made from materials optimized for its specific function, with the inner bag being easily separable for recycling while the outer bag maintains structural integrity for its protective and communicative roles.
2Object-generated harmful factors
If temporary fastening means are used to attach inner and outer bags, then separability for recycling is improved, but structural integrity during use may be compromised
Solution Approach 1:
Temporary fastening means act as an intermediary element that bonds the inner and outer bags together during use, providing sufficient structural integrity for containing products. These fastening means are designed to be reversible, allowing easy separation for recycling while maintaining adequate strength during the product containment phase.
3Adaptability or versatility
If the inner bag is made from thin film for flexibility, then adaptability and ease of filling are improved, but strength and durability may be reduced
Solution Approach 1:
The inner bag is constructed from composite materials that combine thin film properties for flexibility and adaptability with reinforcing elements that provide necessary strength and durability. This composite structure enables the bag to be easily filled and adapted to different products while maintaining sufficient strength to protect contents.
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
Facilitates easy separation and recycling of packaging bags while maintaining product preservation and commercial communication, enabling efficient handling and reuse of materials.
Implementation Method 1
The inner and outer bags are attached to each other, at least at their filling openings, by temporary fastening means
Implementation Method 2
The inner and outer bags are attached to each other by any suitable technique, such as gluing, localized welding, or localized lamination
Implementation Method 3
the plastic film is continuously subjected to successive folding and welding, or gluing, or other operations to create the different constituent parts of the bag
Implementation Method 4
the plastic film is continuously subjected to successive folding and welding, or gluing, or other operations to create the different constituent parts of the bag
Data Source
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AI summary
The invention relates to a packaging bag (1) comprising an outer bag (2) comprising a front wall (2a) and a rear wall (2b), optionally connected by gussets (2c), a bottom (2d), and a filling opening (2e). According to the invention, the bag (1) comprises an inner bag (3) including at least a front wall (3a) and a rear wall (3b), optionally connected by gussets (3c), a bottom (3d), and a filling opening (3e), the inner (3) and outer (2) bags being attached to each other, at least at the level of their filling opening (2e; 3e), by means (5) of temporary attachment, the front (3a) and rear (3b) walls of the inner bag (3) are superimposed with the front (2a) and rear (2b) walls of the outer bag (2), and the optional gussets (2c; 3c) of the outer (2) and inner (3) bags are superimposed and nested within each other.