Single-Piece Flexible Plastic Container for Oxygen Barrier Packaging
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Solution Overview
Problem
Existing flexible plastic containers face challenges in manufacturing complexity, recycling difficulties due to separate components, incomplete oxidation protection, high residual product amounts, and high production costs, which lead to environmental pollution and consumer dissatisfaction.
Innovation Solution
A container design made from a single-piece plastic material, with a body and neck formed by rolling and blowing a sheet, featuring specific wall thicknesses and integrated facades, and a method using a mould with cutting means to simplify production and ensure oxygen-tightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple sheets of complex plastic film are assembled to form the container body, then the oxygen barrier protection is improved, but the manufacturing complexity increases and recycling becomes difficult
Solution Approach 1:
The patent merges multiple functional layers (barrier layer and printable layer) into a single integrated sheet structure. The barrier layer and printable layer are combined in a single sheet rather than being separate components, simplifying manufacturing while maintaining oxygen barrier protection and recyclability.
2Reliability
If multiple sheets of complex plastic film are assembled to form the container body, then the oxygen barrier protection is improved, but the recycling difficulty increases
Solution Approach 1:
The patent combines the barrier function and printable surface into a single sheet material, making the entire container body recyclable as one component. This eliminates the need to separate multiple welded sheets for recycling, thus improving ease of manufacture and recycling while maintaining oxygen barrier protection.
3Reliability
If the suction member is attached to the container and metal sheets are welded to close the cavity, then the hermetic sealing is improved, but the manufacturing complexity and production cost increase
Solution Approach 1:
The patent integrates the suction member directly into the container body as a single integrated structure rather than attaching it separately. This merging of components simplifies manufacturing by reducing assembly steps while maintaining hermetic sealing through the integrated design.
4Reliability
If the suction member is attached to the container and metal sheets are welded to close the cavity, then the hermetic sealing is improved, but the production cost increases
Solution Approach 1:
The patent combines multiple manufacturing operations into a single integrated process. The container body, suction member, and sealing structure are formed in one continuous operation rather than through multiple separate steps, reducing production cost while maintaining hermetic sealing.
5Ease of operation
If the container uses separate components for suction member and body, then the ease of consumption is improved, but the residual product amount increases
Solution Approach 1:
The patent integrates the suction member and container body into a single seamless structure, eliminating gaps and junctions where product could become trapped. This integrated design maintains ease of consumption while minimizing residual product through continuous internal surfaces.
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 manufacturing costs, simplifies recycling, minimizes residual product, and effectively protects contents from oxidation, while maintaining ease of consumption and reducing environmental impact.
Implementation Method 1
blowing the tube into the mould to obtain a container
Data Source
AI summary
A container obtained by blow-moulding a rolled tube. The container includes a body extending, according to a longitudinal axis, between a bottom and a neck made integrally in one-piece with the body. The body has, along a height according to the longitudinal axis, a wall having a thickness between 0.05 mm and 0.4 mm. The neck has, along the height according to the longitudinal axis, a wall having a thickness between 0.4 mm and 0.8 mm.