How should we judge the quality of self-rolling textile casing?
The most important evaluation point when choosing a self-rolling textile casing is its material. When a certain amount of force is applied, whether the belt breaks or falls apart, Regardless of the breaking method, the tensile force must be above the nominal value, that is, the tensile force of the braided casing must be sufficient, and the tensile force requirements of each specification are specified.
In addition, pay attention to the appearance quality. Poor self-rolling textile sleeves will have defects such as edge defects, lack of material, scorching, fish floss, bubbles, deformation, etc. This requires careful inspection of their appearance. Although some have no impact on use, they still pose a potential threat to quality accidents.
Except for compression and tensile tests, it is difficult to distinguish with the naked eye.
Of course, experienced people can use the vs. method to distinguish, and compare from the aspects of smoothness, fineness, color, and content of various raw materials. It has good smoothness, fineness and soft color. It is generally a good self-rolling textile sleeve.
Self-rolling textile sleeve
The first step is to look at , which is the so-called observation with eyes. This is the most effective and intuitive method used by humans to determine something. What you see is what you get and what you hear is false. Seeing is believing is a good proof of the importance of seeing. Carefully observe the self-rolling textile sleeve you purchased to see if the surface is smooth, round, and shiny. If so, it proves that it is qualified in the first step. A good product. If the appearance is rough and has pits everywhere, and the whole looks white, this is due to the excessive calcium powder added during the production process of the self-rolling textile sleeve. Adding an appropriate amount of calcium powder can effectively improve the hardness. , but after excessive use, the self-rolling textile casing will become very brittle and lose its original flexibility. Such self-rolling textile casing will inevitably have problems, so it is best not to buy it.
The second step is to touch, Touch is to make various contacts with your hands to determine the problem. The quality of the self-rolling textile sleeve directly affects the important attribute of the ring stiffness of the pipe, so the most direct method is to use Squeeze the wave crest of the self-rolling textile casing with your hands. A good self-rolling textile casing will feel that the wave crest is strong and elastic when squeezed by hand. On the contrary, the wave crest of a bad self-rolling textile casing will feel good when squeezed by hand. Easily flatten and dent the wave crest.
The third step is to smell . Smell is to smell the pipe with your nose and judge the quality of the pipe from the taste. A good self-rolling textile sleeve has no peculiar smell, while a bad self-rolling textile sleeve has no peculiar smell. The casing will smell strange or even foul.
The fourth step, cutting should be understood as thermal cutting . Only by fully understanding the internal structure of the self-rolling textile casing can we truly understand the quality of the self-rolling textile casing. If you carefully observe the qualified self-rolling textile casing When you look at the cross section of the casing, you will find that the cross-section wall is woven from polyester multifilament and polyester monofilament. The thickness of the cross-section wall of a good self-rolling textile casing is uniform, but not good. The self-rolling textile casing will find that the thickness of the pipe wall is different, and observing the thickness of the wave crest is also an effective basis for knowing the quality of the self-rolling textile casing.
In short, a good self-rolling textile sleeve can withstand these tests.
