How does the stain on the surface of the Automotive Wiring Harness Protection Sleeve occur?

In the Automotive Wiring Harness Protection Sleeve industry, many Automotive Wiring Harness Protection Sleeve manufacturers will encounter some undesirable phenomena such as stains and color spots on the surface of some finished products when the Automotive Wiring Harness Protection Sleeve is formed. The color point refers to various abnormal color spots on the surface of the Automotive Wiring Harness Protection Sleeve after molding. The smudges and spots in the molding of the car wire harness protective cover belong to the poor appearance. How do the stains and spots on the Automotive Wiring Harness Protection Sleeve come about? How should we avoid such product problems from happening. The following Automotive Wiring Harness Protection Sleeve factory will analyze for you one by one:

1. Color point: If the color paste is stored for too long, the color in the color paste will condense into particles, so it is not conducive to dispersion during rubber mixing and cause color points.
Solution: Grind and mash the color paste with a three-roller machine, then add it to the rubber material for mixing; adjust the thickness of the mixing rubber and prolong the mixing time.
2. Stains: Compared with the color points, there are many reasons for the stains in the protective sleeve of the automotive wiring harness. Based on years of experience analysis, the main points are as follows:
①The environmental sanitation of the workshop is not clean; the raw materials of the Cable Sleeve are not well preserved, and are directly exposed to the air, causing the raw materials of the Cable Sleeve to absorb dust in the air. Causes the formation of stains during the production of automotive wiring harness protective sleeves.
②The external release agent itself has stains, so when the release agent is sprayed, the stains are also sprayed out and adsorbed on the surface of the mold cavity, resulting in the surface of the Automotive Wiring Harness Protection Sleeve being dirty after molding.
③Pollution of molds or production equipment. When the Automotive Wiring Harness Protection Sleeve is demolded, the wind blown by the air gun will bring the stains into the mold cavity, resulting in stains after the Automotive Wiring Harness Protection Sleeve is molded.
4. The electric heating plate under the vulcanizing machine is dirty, so the dirt is sucked into the mold cavity when the mold is closed, causing the surface of the Automotive Wiring Harness Protection Sleeve to be dirty after molding.
In addition to the above four points, there are other links that are not strictly controlled, which will also cause this phenomenon. Want to learn more about Cable Sleeve.