Packaging Corrugated Cardboard Protrusions Corner Reinforcement

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Solution Overview

Problem

The binding band in existing packaging methods for outdoor air conditioner units often tightens too much, causing it to bite into the corners of the packaging corrugated cardboard, which can lead to damage during handling.

Innovation Solution

Incorporating protrusions on the inner flaps of the packaging corrugated cardboard that contact the second sidewalls when closed, allowing the binding band to be wrapped around a reinforced area, preventing it from biting into the corners.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the binding band is fastened tightly to prevent loosening, then the reliability of packaging is improved, but the packaging corrugated cardboard corner is damaged due to biting

Engineering Contradiction:

Improvepackaging reliabilityVSAvoidcorner damage

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies local quality by adding protrusions specifically at the corner regions of the packaging corrugated cardboard. These protrusions create localized reinforced areas that differ from the rest of the packaging structure, providing enhanced protection precisely where the binding band exerts concentrated force on the corners.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The protrusions are pre-formed on the packaging corrugated cardboard before the binding band is applied. This preliminary structural modification ensures that when the binding band is fastened tightly, the force is already redirected by the pre-existing protrusions, preventing corner biting before it occurs.

Inventive Principle:

Principle #10Preliminary action

2Object-affected harmful factors

If protrusions are added to reinforce corners, then corner protection is improved, but the device complexity increases

Engineering Contradiction:

Improvecorner protectionVSAvoidpackaging structure complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The packaging structure is segmented into distinct functional regions: the main body of the corrugated cardboard and the protruding corner elements. This segmentation allows the protrusions to be designed and formed as separate structural features that can be integrated into the packaging without requiring entirely new components or assembly steps.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent modifies the geometric parameters of the packaging corrugated cardboard by adding protrusions with specific dimensions and shapes. These parameter changes create the reinforcing effect while maintaining compatibility with standard packaging materials and manufacturing processes, avoiding excessive complexity.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentEP3296228B1package

Publication Date: 2020.01.15 MITSUBISHI ELECTRIC CORP

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AI summary

A package packages an object to be packaged by placing the object to be packaged on a tray box, covering the object with packaging corrugated cardboard (20) from the top, and wrapping a binding band. The packaging corrugated cardboard (20) includes a peripheral wall (23) having a pair of first sidewalls (21) and a pair of second sidewalls (22), an inner flap (24) connected to a top side of each of the first sidewalls (21), and an outer flap (25) connected to a top side of each of the second sidewalls (22). Each inner flap (24) is provided with a pair of protrusions (27) protruding from both side ends of the flap. When the inner flap (24) and then the outer flap (25) are closed, an opening on a top side of the peripheral wall (23) is closed with the protrusions (27) being brought into contact with the second sidewalls (22).