PVC hoses are excellent materials, widely used in the food industry, water supply systems, and many other fields. They serve as ideal pipelines for transporting air, water, gas, oil, and other liquids and gases. Moreover, these hoses can operate within a temperature range of -10℃ to +65℃. In most cases, PVC tubes are clear, and their transparency is closely related to quality. Therefore, generally speaking, you can consider a transparent PVC hose to be of good quality. But how can you further enhance its quality? Let’s take a look.
PVC Resin
To produce a high – quality PVC hose, you need resin with high whiteness and good thermal stability. Additionally, it’s advisable to choose loose resin. Why? Because it has a rough surface and a porous interior, which gives it better oil absorption compared to compact resin. On the condition that the mechanical properties are met, using resins with a lower molecular weight is a good choice.
Plasticizer
The quantity and type of plasticizer play a crucial role. They determine the softness, elasticity, and low – temperature resistance of soft PVC. Furthermore, plasticizers reduce the melting temperature and melt viscosity of PVC. As a result, they lower the molding processing temperature, making the manufacturing process more efficient.
Heat Stabilizer
When selecting a heat stabilizer for PVC hoses, it should possess heat and weather resistance, as well as be easy to process. Additionally, pay attention to its transparency. Organotin stabilizers are perfect for PVC products, but they come at a higher cost. On the other hand, metal soap stabilizers, such as zinc stearate, are more commonly used due to their affordability and effectiveness.