Nested Paper Sleeve Container for Fluid Containment and Recycling

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Solution Overview

Problem

Conventional fluid containers made of plastic, metal, or glass have low reusability and recyclability, leading to high energy and cost intensity and poor environmental sustainability, resulting in significant waste disposal issues.

Innovation Solution

A container design comprising an inner and outer paper sleeve with reinforcing elements and a functional insert, allowing easy separation and recyclability, and featuring a frictional or substance-to-substance coupling for stability and durability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional containers made of plastic, metal, or glass are used, then structural strength and fluid containment are achieved, but recyclability and environmental sustainability deteriorate

Engineering Contradiction:
Improvefluid containmentVSAvoidrecyclability
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The container is divided into separable components: an inner sleeve made of paper for fluid containment and an outer sleeve made of recyclable material for structural support. This segmentation allows the inner paper sleeve to be easily separated and recycled independently, resolving the contradiction between maintaining fluid containment reliability and improving recyclability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The container employs a composite structure combining paper (inner sleeve) with recyclable material (outer sleeve). This composite design maintains the structural strength needed for fluid containment while using materials that are highly recyclable, thus improving both reliability and environmental sustainability.

Inventive Principle:
Principle #40Composite materials

2Productivity

If conventional containers are produced through injection molding or welding processes, then manufacturing efficiency is achieved, but energy consumption and environmental impact increase

Engineering Contradiction:
Improvemanufacturing efficiencyVSAvoidenergy consumption
Core Design Contradiction:
ProductivityVSLoss of energy

Solution Approach 1:

The container uses paper materials that can be easily manufactured through simple forming processes rather than energy-intensive injection molding or welding. The paper construction allows for low-energy production methods while maintaining adequate functionality, reducing overall energy consumption and environmental impact.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

3Ease of manufacture

If paper material is used for container sleeves, then recyclability and environmental sustainability are improved, but structural strength and durability deteriorate

Engineering Contradiction:
ImproverecyclabilityVSAvoidstructural strength
Core Design Contradiction:
Ease of manufactureVSStrength

Solution Approach 1:

The inner paper sleeve is nested within the outer sleeve structure. This nested configuration allows the delicate paper material to provide fluid containment while the outer sleeve provides structural strength and durability, resolving the contradiction between recyclability and structural integrity.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The combination of paper (inner sleeve) and recyclable material (outer sleeve) creates a composite container that leverages the recyclability of paper while the outer material provides the necessary structural strength, thus resolving the contradiction between environmental sustainability and durability.

Inventive Principle:
Principle #40Composite materials

4Strength

If reinforcing elements are added to paper sleeves, then structural integrity is improved, but device complexity increases

Engineering Contradiction:
Improvestructural integrityVSAvoidcontainer structure
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The reinforcing elements are integrated directly into the paper sleeve structure itself rather than being separate components. This merging of the reinforcing elements with the sleeve structure provides structural integrity while minimizing additional complexity, as the reinforcement is built into the material construction rather than added as separate parts.

Inventive Principle:
Principle #5Merging (Combining)

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 design provides a sustainable container with improved recyclability, durability, and reduced environmental impact by using paper materials and minimizing non-recyclable waste, while maintaining structural integrity and ease of assembly.

Implementation Method 1

The inner sleeve and the outer sleeve are coupled to each other

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS12421006B2Container made of paper
Publication Date: 2025.09.23 TUNAP GMBH & CO KG
  • US12421006B2 patent drawing
  • US12421006B2 patent drawing
  • US12421006B2 patent drawing

AI summary

A container for holding a fluid is disclosed. The container comprises an inner sleeve having a first opening and a second opening opposite the first opening, and an outer sleeve having a third opening and a fourth opening opposite the third opening. The inner sleeve and the outer sleeve are made of paper. The first opening has a first reinforcing element which extends into the first opening, and the third opening has a second reinforcing element which extends into the third opening. Further, the container comprises a functional insert. The outer sleeve has a larger diameter than the inner sleeve so that the inner sleeve is insertable into the outer sleeve through the fourth opening such that the insert is fastened between the first reinforcing element and the second reinforcing element.