Why are there bubbles on the surface of the Automotive Wiring Harness Protection Sleeve?

Automotive Wiring Harness Protection Sleeve is one of the important parts of the car, widely used in the door, window, body, seat, sunroof, engine box and trunk, etc., with waterproof, sealing, sound insulation, dustproof, freezeproof, shock absorption , warmth and energy-saving important role. The Automotive Wiring Harness Protection Sleeve can improve the airtightness and prevent the wind and rain from intruding into the compartment. However, if the protective cover of the automobile wiring harness ages and is damaged or bubbles appear on the surface, it will cause rain leakage in the compartment and increase the wind noise of the car. That is what causes the Cable Sleeve products such as Automotive Wiring Harness Protection Sleeve to have bubbles on the surface during the production process. Let's take a look:

1. Moisture (add some calcium oxide when kneading);
2. It is not fully vulcanized, and it looks like there are bubbles when it is not cooked;
3. There are many impurities in the vulcanizing agent, and the impurities of small molecules become decomposed in advance, and the air bubbles remain in the product;
4. The exhaust design of the mold itself is unreasonable, and the air cannot be discharged in time when the rubber material is flushed;
5. Poor dispersion;
6. The plasticizing time of the rubber is long, and there are bubbles when the product is vulcanized.
In short, when the car owner finds bubbles in the Automotive Wiring Harness Protection Sleeve, he should contact the car maintenance company to replace the new Cable Sleeve in time to avoid the influence of wind and rain. In addition, after car owners use car detergent to clean the door and window seal strips, it is best to apply a layer of high-permeability protective agent, which can prevent the aging of the Cable Sleeve and greatly improve the sealing of the Cable Sleeve.