Viscosity: Viscosity is one of the important characteristics of the noodle paste. If the viscosity is too high, the noodle paste will flow slowly, which may lead to a slower filling speed, affecting production efficiency. It may also result in insufficient filling volume because the high-viscosity noodle paste has a large flow resistance in the pipelines and filling heads and is difficult to be smoothly extruded. If the viscosity is too low, the noodle paste is prone to flow, which may cause inaccurate filling volume, such as overfilling or dripping, affecting the product quality and the appearance of the packaging.
Particle size: If the noodle paste contains larger particles or fibers, it may block the filling pipelines or filling heads, leading to interrupted or uneven filling. Even if the particle size is small but the distribution is uneven, it may also cause local flow rate changes during the filling process, affecting the filling accuracy.
Fluidity: Fluidity is closely related to viscosity, but it is not exactly the same. In addition to the influence of viscosity, the thixotropy, yield stress, etc. of the noodle paste will also affect its fluidity. The noodle paste with good fluidity can flow smoothly in the pipelines and filling heads of the filling machine, achieving accurate filling. However, the noodle paste with poor fluidity may form accumulations or have unstable flow in the pipelines, resulting in fluctuations in the filling volume.
Temperature: Changes in the temperature of the noodle paste will affect its viscosity and fluidity. Generally speaking, as the temperature rises, the viscosity of the noodle paste decreases and the fluidity increases; as the temperature drops, the viscosity will increase. If the temperature of the noodle paste changes significantly during the operation of the filling machine, it will lead to unstable filling effects and deviations in the filling volume.
Uniformity: The uniformity of the components and concentration of the noodle paste has an important impact on the filling effect. If the components in the noodle paste are not mixed evenly, and the local concentration is too high or too low, it may lead to inconsistent viscosity and fluidity, thereby affecting the accuracy and stability of filling. For example, if the flour, water, additives, etc. are not mixed evenly, it will cause performance differences of the noodle paste during the filling process.
Surface tension: For the noodle paste with a large surface tension, it may be difficult to flow smoothly out of the filling head during filling, and it is easy to form a hanging drop phenomenon at the filling head, affecting the filling accuracy and the appearance of the packaging. However, if the surface tension is too small, the noodle paste may spread unevenly in the container, affecting the shaping and quality of the product.
