ASTM D2659 Column Crush Testing for Thermoplastic Containers
Column crash tests, which are described in ASTM D 2659, evaluate how blown thermoplastic containers function under particular conditions that are identical to those seen throughout the tests. These tests evaluate characteristics such as apparent crushing stiffness, deflection at yield load, crushing load at failure, and crushing yield load.
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- Overview
- Scope, Applications, and Benefits
- Test Process
- Specifications
- Instrumentation
- Results and Deliverables
Overview
ASTM D2659 describes a method for determining the column crush resistance of thermoplastic containers by applying a compressive load along the vertical axis. This test evaluates the ability of containers to withstand stacking loads during storage, transportation, and handling without structural failure or excessive deformation. It is particularly important for thin-walled plastic bottles and containers where load-bearing capacity is critical.
The test provides insight into container rigidity, wall strength, and structural design efficiency. By simulating real-world compressive forces, ASTM D2659 helps manufacturers optimize material usage, improve container durability, and ensure safe stacking performance in packaging, logistics, and distribution environments.
Scope, Applications, and Benefits
Scope
ASTM D2659 outlines procedures for evaluating the compressive strength and deformation behavior of thermoplastic containers under vertical loading conditions.
- Applicable to thermoplastic containers such as bottles and jars
- Measures resistance to axial compressive forces
- Evaluates deformation and collapse characteristics
- Supports packaging design and performance validation
- Suitable for laboratory and production testing environments
Applications
- Plastic bottle and container design validation
- Packaging performance testing for stacking loads
- Quality control in container manufacturing
- Evaluation of lightweight packaging structures
- Logistics and transportation safety assessment
Benefits
- Ensures structural integrity during stacking and storage
- Reduces risk of container collapse or damage
- Optimizes material usage and cost efficiency
- Improves packaging reliability and safety
- Supports compliance with packaging performance requirements
Test Process
Specimen Preparation
Thermoplastic container is conditioned and positioned upright between compression platens of the testing machine.
1Load Application
A controlled compressive force is applied vertically at a constant rate along the container axis.
2Deformation Monitoring
Load and displacement are continuously recorded to observe deformation behavior and structural response.
3Failure Determination
Maximum load or point of collapse is identified to determine column crush strength.
4Technical Specifications
| Parameter | Details |
|---|---|
| Material Type | Thermoplastic bottles, jars, and similar packaging containers |
| Test Principle | Axial compression to evaluate structural load-bearing capacity |
| Load Application | Constant rate of compression using testing machine |
| Measurement Output | Maximum load and deformation characteristics |
| Failure Mode | Buckling, collapse, or permanent deformation |
| Test Environment | Controlled laboratory conditions |
Instrumentation Used for Testing
- Universal testing machine (compression tester)
- Load cell
- Compression platens
- Displacement measurement system
- Data acquisition system
- Conditioning chamber
- Calibration standards
Results and Deliverables
- Maximum column crush load value
- Load vs deformation curve
- Identification of failure mode
- ASTM D2659 compliant test report
- Recommendations for design and material improvement
Frequently Asked Questions
ASTM D2659 is a standard test method used to evaluate the column crush strength of thermoplastic containers under vertical compression. It is important because it ensures containers can withstand stacking loads during storage and transportation without collapsing or losing structural integrity.
Column crush testing ensures that containers can withstand stacking loads without collapsing, preventing product damage, leakage, and safety risks during storage, transportation, and distribution processes.
Factors include material type, wall thickness, container geometry, manufacturing process, and environmental conditions, all of which affect the container’s ability to resist compressive loads.
Yes, ASTM D2659 allows direct comparison of different designs, materials, and manufacturing processes to determine the most efficient and durable container configuration.
The test evaluates only vertical compressive strength and does not account for lateral forces, impact, or real-world handling conditions, so additional tests may be required for complete performance evaluation.
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