Tapered Container Sleeves with Patterned Openings for Low-Waste Packaging

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Solution Overview

Problem

Existing packaging methods for products like bottles and cans, especially those with primary packaging that offers sufficient protection, face challenges in sustainability and efficiency, particularly involving the use of plastic shrink film and high energy consumption, while sustainable alternatives like paper wrapping require excessive material usage.

Innovation Solution

A method using fiber-based kraft paper to create a sleeve around containers with tapered sections, where the paper is patterned with openings to fit the container shape, wrapped around the container, and secured with connections, eliminating the need for shrink packaging and reducing material waste.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If plastic shrink film is used to wrap products, then product stability and protection are improved, but energy consumption and environmental sustainability worsen

Engineering Contradiction:
Improveproduct stabilityVSAvoidenergy consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent changes the physical state and properties of the packaging material from plastic shrink film requiring thermal contraction to paper material relying on friction and geometric interlocking. The paper sleeve is designed with specific dimensional parameters and surface friction characteristics that enable it to grip the tapered container sections without requiring heat activation, thereby eliminating the high energy input needed for shrink wrapping while maintaining product stability.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent replaces expensive, energy-intensive plastic shrink film with inexpensive, readily available paper material. The paper sleeve serves as a disposable packaging element that can be easily applied and removed without requiring expensive shrink wrapping equipment or high energy input, making it both economically and environmentally superior while achieving the same stabilizing function.

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

2Loss of energy

If paper wrapping is used to package larger containers, then sustainability is improved, but material usage increases

Engineering Contradiction:
ImprovesustainabilityVSAvoidmaterial usage
Core Design Contradiction:
Loss of energyVSQuantity of substance

Solution Approach 1:

The patent applies local quality by designing the paper sleeve with a pattern of openings that corresponds precisely to the tapered sections of the containers. Rather than wrapping the entire container surface, the paper material is strategically positioned only where needed - around the tapered sections - allowing for significant material reduction while maintaining the stabilizing function. The openings allow the paper to conform to and grip the container geometry without requiring excess material coverage.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The paper sleeve is segmented into multiple sections with openings between them, allowing each segment to independently conform to and grip a specific tapered section of the containers. This segmentation enables the use of less total material compared to a continuous wrap, as the paper is concentrated only where structural support and friction are needed, rather than covering the entire container surface area.

Inventive Principle:
Principle #1Segmentation

3Reliability

If cardboard packaging is used to completely enclose products, then product protection is improved, but material usage and cost increase

Engineering Contradiction:
Improveproduct protectionVSAvoidmaterial usage
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The patent employs a flexible paper sleeve that conforms to the shape of the tapered containers, providing protection and stability through friction and geometric interlocking rather than rigid enclosure. This thin, flexible paper wrapping requires significantly less material than a rigid cardboard box that would need to completely enclose the products, while still achieving adequate protection and stability during handling and transport.

Inventive Principle:
Principle #30Flexible shells and thin films

Data Source

PatentEP4382451B1Method for wrapping products arranged next to each other in a package
Publication Date: 2025.07.16 SYNTEGON TECHNOLOGY GMBH
  • EP4382451B1 patent drawingFigure 1i~1iv
  • EP4382451B1 patent drawingFigure 2bc~2a2
  • EP4382451B1 patent drawingFigure 3a~3c

AI summary

Method for wrapping products (2) arranged side by side in a container (1) into a sleeve (3) made of a packaging material (4), wherein the products (2) each have at least one tapered section (6) towards a top (5) of the container (1) and wherein the method comprises at least the following steps: a) providing the packaging material (4) with a pattern (7) of openings (8) which is adapted to the shape of the tapered sections (6) of the products (2) and the arrangement of the products (2) in the container (1); b) Moving the packaging material (4) with the pattern (7) of openings (8) from top to top (5) of the container (1) such that the openings (8) in the packaging material (4) fit around the tapered sections (6) of the products (2) of the container (1) such that the openings (8) of the packaging material (4) encompass the tapered sections (6) in a packaging level (9) below the top (5) of the container (1).c) Wrapping the packaging material (4) around the container (1) such that a cuff (3) is formed around the container (1); and d) joining sections (13) of the packaging material (4) to close the cuff (3).