ASTM D2659 is a standardized method of determining the capacity of a container to withstand crushing forces that are directed on the vertical axis of the container. The thermoplastic containers in the packaging industry should not fail to handle the stresses of stacking, filling, capping, and transportation. The outcomes of the tests are used to help manufacturers in optimizing the distribution of container wall thickness, geometry of the design, and blow-molding conditions to attain the required mechanical strength.
ASTM D2659 Standard Test Method for Column Crush Properties of Blown Thermoplastic Containers
What is ASTM D2659?
What is the Scope of ASTM D2659?
ASTM D2659 provides a procedure for establishing the column crush characteristics of blown thermoplastic containers under an axial compressive load. This is a test procedure used to determine the crushing or deforming of containers, bottles, and jars under vertical pressure necessary to test their strength, durability, and stacking ability during packaging, handling, and transportation. This property is also essential in guaranteeing the protection of goods, preserving the shape of the containers, and the comfortable utilization of materials during designing.
ASTM D2659 Applications in Industry
The method of testing is very common in packaging, food, beverage, pharmaceutical, and personal care industries. Manufacturers use ASTM D2659 findings to design and maximize the efficiency of plastic containers in terms of materials to ensure that the containers meet the stacking strength needs during storage and transportation. It also helps in determining how well the recycled and lightweighted bottles perform in the sustainability programs.
What Materials Are Commonly Tested With ASTM D2659?
Some of them are polyethylene (PE), polyethylene terephthalate (PET), polypropylene (PP), and polyvinyl chloride (PVC). These are lightweight thermoplastics that are usually used in the making of beverage, oil, detergent, and household item boxes since they are easy to move and tough.
ASTM D2659 Sample Preparation and Equipment
| Specimen Details | Blown thermoplastic bottles of polyethylene (PE), polyethylene terephthalate (PET), or polypropylene (PP) liquids or dry goods. |
| Specimen Preparation | Containers are prepared to standard temperature and humidity, and then they are tested. Depending on the desired use condition, the caps or the closures can be in place or not. |
| Specimen Dimensions | Before testing, the common container volumes are 100 mL to 5 L, and dimensions and weight are noted to be used as a reference and compared. |
ASTM D2659 Testing Procedure and Requirements
| Procedure | A compressive force is exerted at a measured rate vertically at the top of the container until failure or collapse takes place. The highest load-bearing and the failure mode are taken. |
| Data Recorded | Made Maximum compressive load (N), deformation of failure, and mode of failure (e.g., buckling, denting). |
| Standard Conditions | Tests are run at the standard laboratory conditions (23 +/- 2°C and 50 +/- 5 relative humidity, otherwise) unless stated otherwise. |
ASTM D2659 Analsysi Results and Interpretation
The test outcome is used to determine the largest axial load that a container can withstand without structural damage, which is the load capacity and stacking capacity. Increased crush strength is an indication of better performance in deformation and safety during storage or shipment. The failure mode gives an insight into the areas of weakness, including the buckling of the sidewalls and base. The results of this test are usually utilized in quality control, optimization of material, and the comparison of the performance of various designs or materials.
ASTM D2659 Related Test Methods
ASTM D4577 is used to measure the compression resistance of shipping containers, and ASTM D642 is used to measure the compressive resistance of both shipping containers and parts with constant loads.
ASTM D2659 Common Challenges and Troubleshooting
Usual problems associated with testing are uneven platen alignment, container sliding, or premature buckling due to off-center loading. Test precision is enhanced by certifying that the platens of the compressions are united appropriately and that the specimens are prepared in the same way.
ASTM D2659 Safety and Best Practices
The compressor machine must be fitted with shields against injury by debris or fragments. Calibration of load cells and platen alignment are done regularly to make sure the operation is safe and reliable.
What is the Importance of the ASTM D2659 Test Method?
This is a very important testing mechanism used in assessing the compressive strength and structural integrity of thermoplastic containers. It assists manufacturers in making safer, more reliable packaging through standardized testing, achieving performance and safety standards at lower cost and optimizing materials in industrial production.
FAQ
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The required number of samples or specimens should comply with the procedure given in the astm d2659 standard. However, the MaTestLab operations team can assist you for your special requirements once you share your testing details with us.
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The turnaround time for astm d2659 test methodology depends upon the test procedure mentioned in the standard test document. However, we at MaTestLab understand your research requirements and hence try to get your test completed within the least possible time.
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