You can try this at home with a piece of a plastic bag. Initial modulus is high, that is it will resist deformation forawhile, but if enough stress is put on a flexible plastic, it will eventually deform. Of course, the ability to deform is what keeps them from breaking. Flexible plastics like polyethylene and polypropylene are different from rigid plastics in that they don't resist deformation as well,but they tend not to break. Here we mainly talk about the flexible plastic tensile testing and elongation rate. Talking about tensile, there is another definition should be discussed together – Elongation, which is just the length the polymer sample is after it is stretched (L), divided by the original length of the sample (L 0), and then multiplied by 100. Labthink is right the manufacturer of the tensile testers professionally for small-force-materials, such as polymers,paper, sheeting, single fibers. But if you what to do a tensile testing on a thin film, maybe 5N is enough. When you want to do tensile testing for metal specimen, the max load should be huge and maybe it doesn’t need a very high accuracy. According to different standards and different test specimens, they have some differences in max load, accuracy, grips, force sensors and other aspects. It is usually considered as ultimate tensile strength or tensile strength at break and with units Newton per area(mm or inch).īasically, all the tensile testing machines do not vary significantly. It is an important mechanical property when talking about polymers, fibers, rubber, metals, and etc. By tensile testing, you will know that how “strong” of a material really is. Tensile Strength is the ability of materials to resist breaking under tensile. Tensile testing, Tensile Tester, Tensile Test, Elongation Test, Tensile Strength Test It is an important mechanical property when talking aboutpolymers, fibers, rubber, metals, and etc. For more information, please write to: About Us Test for stripping force of oil barrel anti-theft cover, opening force of internal pull ring and handle drawing forceĪs per your needs, Labthink provides all-round customization services. Heat-seal strength test for cap films of medical bottles, yogurt cups and jelly cups Tensile test of packaging materials with ultra-long elongation Non-destructive test for packaging seal performance Water vapor transmission rate test by inverted cup method Gas transmission rate test in various high temperature environmentsĬontact lens oxygen transmission performance testĬO2 transmission rate test by weighing method Gas transmission rate test in various high pressure environments Gas transmission rate test in various humidity environments Transmission rate test of organic gases such as benzene, ester, alcohol and ketone, etc. Transmission rate test of hazardous gases such as hydrogen and methane, etc.
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