Adhesive Bond Testing for Container Articles

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Solution Overview

Problem

Containers without enclosures, where articles are directly connected by adhesives, are prone to unintentional separation during handling, leading to costly downtime and potential total loss, especially when palletized or during strapping processes.

Innovation Solution

A method and device for simultaneously and quickly testing the adhesive bonds between articles in a bundle by applying individual forces and moments to detect any improperly manufactured bonds, ensuring they withstand normal handling loads without damaging the container.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If containers are manufactured without outer casings and articles are directly bonded together by adhesives, then manufacturing cost and complexity are reduced, but the reliability of the container structure deteriorates due to potential bond failures during handling

Engineering Contradiction:
Improvecontainer structureVSAvoidadhesive bond stability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The patent implements a test device that applies predetermined forces to articles in the container before they enter the handling and palletizing processes. This preliminary testing action identifies potentially defective bonds in advance, allowing defective containers to be separated before they cause problems during subsequent handling operations.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The test device provides feedback about the strength and integrity of adhesive bonds by measuring the forces required to separate articles. This feedback mechanism enables real-time quality control, allowing the system to identify and flag containers with insufficient bond strength before they proceed to downstream processes.

Inventive Principle:
Principle #23Feedback

2Ease of manufacture

If adhesive bonds are applied without external enclosures, then ease of manufacture is improved, but the risk of unintentional separation during handling increases

Engineering Contradiction:
Improvecontainer assemblyVSAvoidunintentional separation
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The test device performs preliminary strength testing of adhesive bonds before the container enters normal handling operations. By applying predetermined forces that simulate handling conditions, the system proactively identifies bonds that may fail during subsequent operations, enabling preventive separation of defective containers.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The test device counteracts the potential harmful effect of weak adhesive bonds by detecting them before they can cause unintentional separation during handling. The predetermined forces applied during testing serve as a preventive measure that neutralizes the risk of bond failure in downstream processes.

Inventive Principle:
Principle #9Preliminary anti-action

3Productivity

If containers are palletized for efficient handling, then productivity is improved, but the risk of total loss increases if a defective bond causes disintegration

Engineering Contradiction:
Improvehandling efficiencyVSAvoidcontainer loss
Core Design Contradiction:
ProductivityVSLoss of substance

Solution Approach 1:

The test device conducts preliminary strength verification of adhesive bonds before containers are palletized. By identifying potentially defective bonds in advance, the system prevents defective containers from being included in pallets, thereby eliminating the risk of total pallet disintegration and loss during subsequent handling and transport operations.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The test device provides a protective buffer by detecting weak bonds before they can cause catastrophic failure during palletizing. This preliminary detection acts as a cushioning mechanism that prevents the propagation of bond failures throughout the entire pallet structure, protecting against total loss of palletized containers.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

4Measurement precision

If adhesive bonds are tested individually, then measurement precision is improved, but the testing time and productivity are reduced

Engineering Contradiction:
Improvebond strength detectionVSAvoidtesting duration
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The test device merges multiple testing operations into a single integrated system that can evaluate multiple articles within a container simultaneously or in rapid succession. By combining force application mechanisms and measurement capabilities into one coordinated device, the system achieves comprehensive bond testing without proportionally increasing testing time.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The test device is designed with universal capabilities to test various types of adhesive bonds across different container configurations. The predetermined forces and measurement systems can be applied to multiple articles with different bonding patterns, enabling efficient comprehensive testing without requiring separate specialized equipment for each bond type.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP2878544B2Method and device for testing adhesive joints between articles a container
Publication Date: 2023.01.11 KRONES AG
  • EP2878544B2 patent drawingFigure 1
  • EP2878544B2 patent drawingFigure 2a~2b
  • EP2878544B2 patent drawingFigure 3a~3c

AI summary

A method and a device (100) for testing the adhesive bonds (02) between the articles (03) of a container (01) consisting of articles (03) directly connected to each other by adhesive bonds (02) in at least one row (04) and/or at least one line of at least two articles are described.The procedure may provide that, after completion of the container (01), the adhesive bonds (02) between articles (03) of the container (01) are tested by subjecting all articles (03) of the container (01) and/or at least the articles (03) at the periphery of the container (01) simultaneously and/or in quick succession to a force action consisting of individual forces (F, Fx, Fy, Fz) and/or a moment action consisting of individual moments (M), wherein the individual forces (F, Fx, Fy, Fz) and/or individual moments (M) acting on each article (03) of the container (01) differ all, in groups or in pairs in magnitude and/or direction, whereby all adhesive bonds (02) between the articles (03) experience at least a tensile load and/or a shear load and/or are subjected to a moment load.The procedure further provides that the reactions of the articles (03) of the container (01) to the force and/or moment action are monitored, and if the monitoring reveals that all articles (03) of the container (01) behave in the same way, it is inferred that the adhesive bonds (02) between the articles (03) of the container (01) are properly manufactured, and if the monitoring reveals that at least two articles (03) of the container (01) behave differently, it is inferred that at least one adhesive bond (02) is defectively manufactured.The device (100) comprises all articles (03) of the container (01) and/or at least the articles (03) at the periphery of the container (01) simultaneously and/or in quick succession subjecting to a force action from individual forces (F, Fx, Fy, Fz) and/or a moment action from individual moments (M), which directly or indirectly monitor and evaluate the reactions of the articles (03) of the container (01) to the force and/or moment action in order to determine whether all adhesive bonds (02) between the articles (03) of the container (01) are properly made, or whether one or more adhesive bonds (02) between the articles (03) of the container (01) are defective.