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The silicone braided hose extrusion production process adopts a three-stage molding process, which can be made by extrusion, braiding and extrusion, which improves the pressure resistance of the silicone braided hose.

The first step in the production process of the braided silicone hose is to extrude the inner tube.

Usually, when extruding the inner tube, we ask the customer to try to make the wall thickness between 1~2mm. The reason: if the inner tube wall thickness is too thin If it is too soft, it will lead to no supporting force, and the softness will easily fall off when weaving the fiber thread, resulting in the failure of weaving. Those who have special requirements can customize the inner tube can be made of high temperature resistance, color, flame retardant, etc., for use in special fields, such as the inner tube is black, the outer tube is transparent, the inner tube is made of high temperature resistant glue, and the outer tube is ordinary and highly transparent Glue is all available, which shows that the production process of the inner tube of the braided silicone tube can meet the needs of various industries.

Secondly, after extruding the inner tube

It is necessary to braid the fiber thread. The conventional braided silicone tube can withstand more than 12-38 kg of pressure, but some customized customers do not need to withstand compression. They usually need to withstand negative pressure or ultra-high pressure. At this time, the fiber line cannot meet the customer’s requirements. We usually use high-strength braids such as nylon fishing lines.

Braided. Pull the inner tube through the braiding machine through the braided net composed of several braided heads. At this time, the braided net will wrap the inner tube (the braided head will be programmed to weave according to a fixed route, so the silicone wire you see Weaving is done regularly rather than randomly) All conventional braided silicone tubes must be carried out with a braiding machine, so this link is the most important link in all processes. And the selected braid needs to be resistant to high temperature because the silicone vulcanization process is carried out at high temperature, there will be a need to install the head of the knitting machine, because there are many heads, not just one head, as long as any one of them appears Problems can cause product weaving confusion to occur.

Then, the last step after making the inner tube and the braided wire is to extrude the outer tube.

This link looks simple but is actually very troublesome. It should be noted that the inner tube wrapped with fiber wire will cause an internal space when it passes through the extruder. It will carry a small amount of air. At this time, if the silicone outer tube is extruded, air bubbles will appear and the outer tube will be uneven. The solution is to make the outer tube wall thickness a little thicker.
When the silicone outer tube is extruded When the material of the outer tube is heavy, the silica gel will properly shrink and tighten, and the internal air will be forced out to the outside to alleviate such problems. Another reason is that the increase in the wall thickness of the outer tube will landfill the original uneven outer wall. In this way, the uneven surface of the braided silicone tube can be solved, and the extrusion of the outer tube is also the last step in all the production processes of the braided silicone tube and marks the end.

Silicone braided hose is widely used in high-frequency induction equipment, oxygen generators and other fields. It adopts a single-screw horizontal silicone extruder head, combined with a silicone automatic feeding machine and a silicone automatic pipe cutting machine, which greatly improves production efficiency.