Describes the important production steps of custom heat shrink tubing

When the temperature of the custom Heat Shrinkable Tube reaches a certain level during use, the custom heat shrinkable tube will shrink, but do you know the production process of the custom heat shrinkable tube? Below, I will introduce the production steps of the custom heat shrinkable tube, which is convenient Everyone has a more in-depth understanding of custom heat shrinkable tubes, and can do more with less when using them!

The production process of custom heat shrink tubing is divided into five steps, usually masterbatch granulation, sleeve extrusion, irradiation crosslinking, sleeve expansion, printing and packaging.
1. Masterbatch granulation: The production materials of customized heat-shrinkable tubes are taken according to a certain formula, and then mixed with an internal mixer to produce the masterbatch particles required for customized heat-shrinkable tubes.
2. Casing extrusion: Put the masterbatch that has been produced into the internal mixer, and extrude qualified casings according to the production procedure. At the same time, pay attention to the wall thickness and partial wall of the pipe during the extrusion process. This has a great influence on the quality and use of the bushing.
3. Irradiation cross-linking: It is a key process in the production process of customized heat shrinkable tubes. After the tube is extruded by the machine, it needs to be irradiated by an electron accelerator, so that the polymer material inside the tube can be increased and cross-linked. , so that the molecules inside the casing will change from a linear structure to a network structure, and the chain segments and chain segments have immediate chemical links, and there is a relatively strong interaction force. Moderation is required for the use of radiation crosslinking in order to produce acceptable custom heat shrink tubing. If the cross-linking is too large during the radiation process, the produced sleeve will not be able to expand, and if the cross-linking is too small, the sleeve will not expand, or cannot meet the expansion requirements, and it is easier to crack during the expansion process , and the ability to shrink is not enough, and the effect of retraction is not very good.
4. Casing expansion: After the casing is cross-linked by radiation, it is necessary to use an expansion machine at this time to make the stretching resistance of the chain segment of the pipe. The resistance of the casing is generally relatively large, and the retraction stress of itself is completely Just can't overcome this resistance, so after the sleeve pipe is produced, it will keep the shape after expansion.
5. Printing and packaging: The above is to tell you about the main production steps of customized heat shrinkable tubes, so that you can also check the quality of the tubes in the process of use, which is convenient for everyone to use.