Comparison of three commonly used tensile fixtures for platic&rubber tensile test

Rubber and plastic products are everywhere in our daily life, and their durability and performance depend on the materials used in their production. One key aspect in evaluating these materials is through the use of the tensile test, a method used to measure the strength and stretching capabilities of rubber and plastic products.

In a typical tensile test, a sample of rubber or plastic material is placed in a machine that stretches the material until it breaks. During this process, the machine measures the amount of force that is needed to stretch the material and the amount of stretch the material endures before breaking.

This test provides valuable information about the performance characteristics of the material. It helps manufacturers ensure that their products meet the required standards and are durable enough to withstand the challenges of everyday use.

Let's share 3 commonly used tensile grippers as follows:

This kind of grip called Wedge tensile fixtures ， it is highly versatile and can be used on rubber, plastics or other samples, so it was the most generally recommend one

This is called double eccentric wheel gripper, which is mostly used in rubber products and has a self-tightening function. Uniform pressure on the grip face ensures that the thinned specimen does not slip out of the grip during the test.

This one called Hand kneading gripper, it is also universal for rubber and plastics, but it is not as wide as the first one. Moreover, the length of this clamp is relatively long, which will occupy the stretching space of the universal testing machine. Therefore, if the product has a large sample elongation, we generally will not choose this kind of product. But price of this kind is relatively lower.