Please provide the Chinese content to be translated.Silicone Heat Shrink TubingIn the application of heat shrink tubing, shrinkage rate is a crucial indicator. We know that heat shrink tubing requires heating to shrink and then wrap around the respective objects. As such, our objects come in various shapes, some with simple tube-like structures of identical longitudinal dimensions, while others have significantly different longitudinal sizes. However, we typically require the heat shrink tubing to fully encase the small cross-sectional dimensions of the object after it has been heated and shrunk.
When the difference in longitudinal cross-sections is small, opting for a heat shrinkable tube with a lower shrinkage rate can both reduce costs and improve efficiency, shortening the heating time during the heating process. So, how do we calculate our shrinkage rate?
Firstly, regardless of ourSiliconeShrink TubeIn its initial manufacturing process, whether round or flat, the shape originates from a circular structure. After the final product is formed, it undergoes subsequent processing to take on different shapes. However, when we heat the heat shrink tube, it effortlessly returns to its natural circular state. Therefore, our calculations are based on the circle, which is crucial. Many customers use flat heat shrink tubes, so they're accustomed to not seeing length and width dimensions as prominently on them.
Silicone Heat Shrink TubingShrinkage rate refers to: measuring the inner diameter (R1) of the heat shrinkable tube in its expanded state, then heating it to shrink back to its fully contracted state. At this point, measure the inner diameter (R2), and R1:R2 is our shrinkage rate. For double-wall heat shrinkable tubes, the inner diameter we refer to here is the inner diameter of the adhesive layer. However, during the heating and shrinking process, the adhesive layer flows into an irregular shape, making it difficult to measure.
For double-walled silicone heat shrinkable tubes, there are typically two methods to calculate the retraction inner diameter. One method involves calculating only the sheath layer inner diameter, while the other accounts for the heat shrinkable tube inner diameter during extrusion. Due to the inherent errors in both methods, the actual shrinkage rate of the heat shrinkable tubes is usually slightly greater than the nominal shrinkage rate specified in the design.
Yongle Rubber & PlasticThe company has successfully passed the ISO9001 certification. We specialize in manufacturing platinum silicone tubes, peristaltic pump silicone tubes, food molding silicone components, and silicone products. We also offer customized production of sealing components for plastic products. Our competitive strategy revolves around "Creating Better Products, Providing Better Services, and Establishing a Better Image," continuously driving transformation and management innovation to enhance our overall corporate competitiveness.
