It is reasonable for double-wall heat shrinkable tubes to have color differences. Of course, if the color difference is too large, the quality will not be a big problem. It will indeed affect the use of the product. Therefore, when we choose a heat shrinkable tube manufacturer, it is necessary to ask about the stability in advance. 

Cable accessories such as colored heat shrink tubes and heat shrink busbar sealing caps will have color differences during the production process. The main reasons are:

1. Different batches of different casing raw materials can also lead to different colors of the finished products.

2. Different materials of 10KV and 35KV will also cause different colors.

3. Masterbatch is the main component that determines the color of the heat shrinkable tube. After the heat shrinkable tube has been processed many times, the color will change.

4. During the extrusion process, affected by high temperature, the masterbatch will undergo some performance changes, and impurities will also be extruded out.

5. During the irradiation process, the electron rays expand with the heat shrinkable tube, and cross-linking reactions occur. These are physical changes and have a certain impact on the color.

6. During the expansion process of heat shrinkable tubes, glycerin is generally used for heating. At this time, high temperature, impurities and some factors can affect the color change.

7. Double-walled heat shrinkable tubes come in many colors. There is a great demand for the colors of heat shrinkable tubes of different specifications, so most manufacturers have several fixed colors of heat shrinkable tubes. Heat shrinkable tubes produced by the same manufacturer will have some color differences depending on the production batch, not to mention the color of the heat shrinkable tubes produced by different manufacturers will also be slightly different, unless the heat shrinkable tubes produced by the same manufacturer are in The production process is well controlled and the production is uninterrupted, so that the color difference of the heat shrinkable tube produced will be very small.

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