What is the reason for the belt marks on the Stainless Steel Braided Sleeve?

First of all, most of these belt marks come from the production process of Stainless Steel braided sleeve. Why do you say that? It is because some Stainless Steel Braided Sleeve manufacturers are missing a step in the process. After molding, there is usually a high-temperature oven to vulcanize the Stainless Steel Braided Sleeve with cross-linking factors. The temperature of this step is much higher than the temperature in the drying tunnel, which allows the Stainless Steel Braided Sleeve to undergo a preliminary shaping, that is, the Stainless Steel Braided Sleeve. The surface is basically crusted and mature, but the Cable Sleeve tube inside the wall thickness is not fully vulcanized, so the drying tunnel needs to be vulcanized again, so that there will be no belt marks if an oven is added between the drying tunnel and the extruder, because The surface of the Stainless Steel Braided Sleeve has been solidified, so even if it is placed on the conveyor belt, there will be no belt marks!

As for the problem of belt marks, it is the absence of the oven process, which will cause this problem on the surface of the Stainless Steel Braided Sleeve, because the Stainless Steel Braided Sleeve immediately enters the conveyor belt of the drying tunnel for vulcanization after being extruded from the die mouth. , note that the surface of the stainless steel braided casing is not vulcanized at this time, and it is still in the state after the Cable Sleeve is drilled, but the threaded rod is pushed out of the mold mouth (at this time, the Cable Sleeve is soft and will be left behind by some external stimulation) Traces) and the conveyor belt of the drying tunnel is not replaced every day. With the continuous aging of the conveyor belt or continuous incompleteness and adsorption of dust, at this time, the Stainless Steel Braided Sleeve will immediately appear after the conveyor belt. It is the source of the belt marks. If the belt marks have been formed in the front drying tunnel, the post-baking tunnel cannot change the surface of the Stainless Steel Braided Sleeve, so this will happen after molding.
As for why not add an oven process to the extrusion equipment and drying tunnel to solve the belt marks? It should be some relatively small fields or because of cost considerations, it is a waste of electricity to add a high-temperature oven to process uninterrupted high-temperature irradiation, so in the eyes of some manufacturers, reducing such an oven can also save A lot of electricity bills.
Another important reason is: the stainless steel braided casing needs to be wrapped with some other materials such as LED light strips, ropes or other items. As mentioned earlier, the problem of this oven is relatively high. All materials that are not resistant to high temperature are easy to appear in this oven. The problem, this is also the problem that many manufacturers have to choose this process because they know how to solve the belt marks. In this case, it is inevitable that the belt marks appear on the surface of the Stainless Steel Braided Sleeve! Among them, the extrusion process in the Stainless Steel Braided Sleeve is the first to bear the brunt. This is generally more common in the field of LED finished light strips, which is often referred to as integrated light strips. Because the Cable Sleeve needs to be wrapped with the LED light strips and vulcanized together, so it cannot Entering this high-temperature oven for initial vulcanization, you need to directly enter the front drying tunnel for molding, and then directly print the belt marks firmly on the surface of the Cable Sleeve! Because the LED light strip cannot withstand the high temperature after entering the high-temperature oven, it will be necrotic.