Birch Plastics ASTM D1238 Melt Flow Rate of Thermoplastics testing
Only $30.00 per Test Sample
- Send us a small sample no more than 15 grams is needed.
- Once received we will have the results within 48 hours.
- We'll email you a report after payment is received.
- Each sample is only $30.00
Samples should be sent to:
ATT: Lab Birch Plastics Inc. 5957 South Loop East Houston, TX 77033 713-433-1898
The melt flow indexer is the most popular device in the plastic industry to determine material viscosities and is often used to test batch-to-batch consistency.
Melt flow testing is simply a measure of the flow of a polymer when melted. The result of a melt flow test, called the melt mass-flow rate (MFR) or melt volume-flow rate (MVR), is defined as the amount of mass or volume of a polymer that flows through a small die at a specified temperature and pressure. It is often used in the plastic industry for quality control of thermoplastics.
The melt flow test itself is straightforward. The method is described in the standards ASTM D1238 and ISO 1133. A small sample of about 5 grams is heated above its melting or softening point and forced to flow through a capillary using a piston actuated by a specified weight, usually 2.16 kg or 5 kg. The weight of melt in grams flowing through the capillary in 10 minutes is the melt flow index.
While running this test is you get to examine what the material looks like when melted. This is important because it gives you the ability to see if the plastic is smooth, rough, brittle, or lost all physical integrity.
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