Recyclable Paper-Plastic Container Assembly for Strength and Disassembly
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Solution Overview
Problem
Conventional PET plastic bottles generate significant waste due to non-degradability, while biodegradable paper bottles lack structural strength and pressure resistance, failing to meet regulatory and industry requirements for recyclability and biodegradability.
Innovation Solution
A fully recyclable container composed of biodegradable plastic components and a spiral paper tube body, connected by locking members and threads, with a biodegradable liner, allowing easy assembly, disassembly, and natural decomposition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional PET bottles are used, then production efficiency and structural strength are improved, but environmental degradation and waste accumulation worsen
Solution Approach 1:
The container is divided into multiple detachable components (cap, shoulder, body, base, liner) that can be separated for recycling. Each component is made from different materials optimized for its function, allowing selective recycling and reducing overall environmental impact while maintaining production efficiency through modular assembly
Solution Approach 2:
The container uses composite construction combining biodegradable plastics (cap, shoulder, base, liner) with paper-based material (body). This composite approach maintains the structural strength and production efficiency of conventional containers while the biodegradable components reduce environmental degradation and enable natural decomposition at end-of-life
2Object-generated harmful factors
If paper-based bottles are used, then biodegradability and environmental friendliness are improved, but structural strength and crush resistance worsen
Solution Approach 1:
The container combines paper-based body (environmentally friendly) with biodegradable plastic components (cap, shoulder, base, liner) that provide enhanced structural strength and crush resistance. The plastic components reinforce the inherently weaker paper structure while maintaining biodegradability, thus improving both strength and environmental friendliness simultaneously
Solution Approach 2:
By separating the container into paper-based body and plastic reinforcement components, each material can be optimized for its specific function. The paper body provides environmental friendliness and basic structure, while the plastic components provide the necessary structural strength and crush resistance that paper alone cannot achieve
3Ease of manufacture
If integrally formed paper bottles are used, then manufacturing simplicity is improved, but structural strength and pressure resistance worsen
Solution Approach 1:
The container is manufactured as separate components (cap, shoulder, body, base, liner) that are assembled together. This segmentation allows each component to be optimized for its specific function including pressure resistance, while the modular assembly process maintains manufacturing simplicity and efficiency
Solution Approach 2:
The composite construction with biodegradable plastic components provides the necessary pressure resistance that paper alone cannot achieve, while the modular design maintains ease of manufacture through standardized assembly processes
4Object-generated harmful factors
If biodegradable materials are used, then natural degradation is improved, but structural strength and durability worsen
Solution Approach 1:
The container uses biodegradable plastic materials that maintain structural strength and durability during use, then naturally degrade at end-of-life. The composite structure with reinforced joints and locking mechanisms ensures durability during the service period, while the biodegradable composition enables natural degradation afterward, resolving the contradiction between durability and degradability
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 provides excellent structural strength, gas barrier, and water resistance, is fully recyclable and degradable, meeting ESG standards by being 100% decomposable and reusable, and overcoming the limitations of previous biodegradable materials.
Implementation Method 1
the liner is formed inside the housing by blow molding of biodegradable plastic
Implementation Method 2
The top of the body and the connection portion of the shoulder are provided with a first locking member by which the shoulder and the body are detachably connected
Data Source
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AI summary
A fully recyclable container and a method of manufacturing the same is provided. The container includes a cap 10, a shoulder 20, a body 30, a base 40, and a liner 50. The cap 10, the shoulder 20, and the base 40 are made of biodegradable plastic by injection molding while the body 30 is made of waterproof paper. The cap 10, the shoulder 20, and the base 40 are detachably connected to form a housing of the container. The liner 50 is formed inside the housing by blow molding of biodegradable plastic. The respective components of the container are completely made of biodegradable or bio-decomposable material and able to be disassembled for sorting and recycling. Thereby the fully recyclable container completely meets requirements of environmental protection and recycling.