Analysis Of Factors Causing Pre-insulated Casing Wall Thickness To Fail To Meet Standards

1. The concentration of silicone resin does not meet the standard
After the silicone resin fiberglass tube is woven and formed into a blank tube, it needs to be coated with silicone resin. When the concentration of silicone resin is not appropriate or the diluent is not fully integrated, it is easy to cause uneven wall thickness of pre insulated sleeve.
2. The paint bucket has been used for too long
The paint bucket has been used for too long, and the silicone resin in the bucket has not been updated for a long time, which is easy to cause solvent crystallization or agglomeration. These crystals or agglomerations are coated on pre insulated junction sleeve, which will also cause uneven wall thickness of the finished casing.

The existence of the above two points makes it a high probability event that the wall thickness of insulated joint sleeve does not meet the standard. In order to reduce the proportion of unqualified products, in actual production operations, what we have to do is to try to avoid the occurrence of the above phenomena, adopt regular and irregular dual mechanisms to regularly maintain and inspect equipment, improve production process, strengthen quality control and inspection mechanisms, and prevent defective products from entering the market!