Paper Blister Container with Bend-Line Opening for Recycling
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Solution Overview
Problem
Existing packaging for products like cleaning agents in dishwasher or toilet cisterns is made of mixed materials, making recycling difficult and opening cumbersome, with plastics components requiring separate disposal and posing environmental concerns.
Innovation Solution
A container with a paper-based blister card and cover, containing dimensionally stable cuboid-shaped bodies, features a material weakening line for easy opening by bending, eliminating the need for separate plastic tear strips and allowing complete recycling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If packaging is made of mixed materials (plastics and paper), then product protection and sealing are improved, but recyclability and environmental sustainability deteriorate
Solution Approach 1:
The patent applies homogeneity by making both the blister card and blister cover from the same paper-based material (cardboard or paperboard). This eliminates material complexity and enables complete recyclability while maintaining protective functions through the unified paper-based construction.
Solution Approach 2:
The patent uses composite paper-based materials (cardboard or paperboard) that combine structural integrity with recyclability. The material composition provides both protective qualities and environmental sustainability by being fully recyclable in paper recycling streams.
2Reliability
If packaging uses a sealed blister structure, then product protection is improved, but ease of opening deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-creasing the blister card along the opening line during manufacturing. This pre-creasing creates a predetermined breaking point that guides the opening process, making it easy for users to open the packaging by simply applying force at the creased location without damaging the product.
Solution Approach 2:
The patent segments the sealing structure by creating a distinct opening line with reduced bonding strength between the blister card and cover. This segmentation allows the packaging to be opened cleanly at the predetermined line while maintaining the integrity of the sealed structure during storage and transport.
3Ease of operation
If a tear strip made of plastics is added for easy opening, then ease of opening is improved, but material complexity and environmental impact worsen
Solution Approach 1:
The patent extracts and eliminates the need for separate plastics tear strips by integrating the opening function directly into the paper-based blister card structure through pre-creasing. This removes the additional plastic component and its associated recycling complications while maintaining easy opening functionality.
Solution Approach 2:
The patent applies universality by making the paper-based material serve multiple functions: it provides structural protection, enables easy opening through pre-creasing, and ensures complete recyclability. This multi-functionality eliminates the need for separate plastics components and simplifies the overall packaging system.
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 container facilitates easy opening and complete recyclability by leveraging the product's stability to break along a predetermined weakening line, ensuring efficient separation of components without deformation, thus enhancing sustainability.
Implementation Method 1
The product contained in the packaging acts as a lever when the packaging is opened
Implementation Method 2
a material weakening functioning as a bend line which extends both over the blister cover and over the blister card
Data Source
AI summary
A container comprises a product contained in a packaging, wherein the packaging comprises a paper material and the product comprises at least two substantially dimensionally stable, cuboid-shaped bodies. The packaging comprises a blister card and a cuboid-shaped blister cover arranged on the blister card, both the blister card and the blister cover being made of the paper material and the at least two bodies substantially completely filling the blister cover. The packaging may further comprise a material weakening functioning as a bend line which extends both over the blister cover and the blister card and runs in a plane lying between the at least two cuboid-shaped bodies such that the packaging can be broken open by bending the container along the bend line to remove the product from the packaging. The product contained in the packaging acts as a lever when the packaging is opened.