How are the bubbles in the Automotive Wiring Harness Protection Sleeve produced?

Everyone knows that there is another very important part that cannot be ignored in the case of ensuring other performances of the Automotive Wiring Harness Protection Sleeve, that is, the Automotive Wiring Harness Protection Sleeve must not have air bubbles. The tube is highly wear-resistant, so it can't stand a few tosses.

Automotive wire harness protective sleeves are mainly extruded with platinum catalysts. Of course, some manufacturers will choose to use peroxide extrusion molding to reduce the risk value in order to avoid the generation of bubbles. However, the performance of Automotive Wiring Harness Protection Sleeve will be greatly reduced. , so there are many manufacturers of Automotive Wiring Harness Protection Sleeve on the market, but not many can achieve excellent performance in all aspects of Automotive Wiring Harness Protection Sleeve, so that the market prices are uneven and chaotic. There are two reasons why Cable Sleeve manufacturers use peroxide molding. One is that there is no need to worry too much, it is convenient to operate, and there is no need to consider whether there will be air bubbles. Second, the reasons for their own equipment hinder them. The equipment is too old, If the cooling effect is not good, the manufacturer cannot produce platinum Automotive Wiring Harness Protection Sleeve.
Why is it easy to produce air bubbles in the automotive wire harness protective sleeve extruded with platinum catalyst? Whether there is an effective solution to the generation of bubbles, let's analyze it below.
First of all, the generation of bubbles depends on the ratio of the raw material of the Cable Sleeve and the platinum catalyst. The ratio of the A/B components of the platinum vulcanizing agent to different Cable Sleeve is different. The other one has something to do with the humidity of the air on the day. If A slight deviation in the ratio will cause air bubbles in the extrusion process.
Second: Whether the cooling equipment of the extrusion equipment and the bubble removal function of the screw are sound. The Cable Sleeve is extruded from the extrusion screw to the die without any bubbles. If there are bubbles, when the tube is baked at a high temperature, Bubbles will be generated.
Third, the temperature control of the high-temperature oven part needs to be very precise. If the temperature control is not well controlled, it is easy to generate air bubbles.