In the precision process of Rice noodles production, although the screen is a simple physical component, it plays a role in determining the quality and taste of the productThe role of 'gatekeeper'. The choice of mesh size directly affects key indicators such as the fineness of the powder slurry, the taste, glossiness, and breakage rate of the finished product. Therefore, establishing a set of scientific selection criteria and determination methods is crucial for ensuring product quality stability and optimizing production efficiency. This paper will systematically explain how to scientifically determine the number of screen mesh required for Rice noodles production.

Mesh "is the core indicator for measuring the size of a sieve aperture, defined as the number of holes per 1 inch length. The higher the mesh size, the tighter the arrangement of holes, the smaller the aperture, and the finer the material that can be sieved. It is worth noting that due to differences in national standards (such as national standards, American standards, Taylor standards), the corresponding pore size micrometer values for the same mesh may vary slightly. In production practice, it is necessary toPay attention to both the mesh size and the corresponding absolute aperture value simultaneouslyAnd confirm the standards with the supplier to avoid process deviations caused by standard confusion.

1、 The selection of mesh size is not arbitrary, but based on a comprehensive judgment of the following core standards:

1. Product type and specifications
Different Rice noodles products have different requirements for the fineness of the powder, which is the primary basis for selecting the screen.

Fresh wet Rice noodles (such as river noodles and rice noodles)Pursuing a smooth and delicate taste, it is required that the powder must be evenly distributed without rough particles. Usually recommended for use 80 mesh to 120 meshThe sieve is used for powder filtration to ensure the quality is fine and smooth.

Dry Rice noodles (such as Guilin rice noodle and Yunnan rice noodles)：Fine Rice noodles-Require a smooth and silky texture, with fine powder, generally used 60 mesh to 100 mesh.Coarse Rice noodles/Laifen-Pursuing a chewy texture with elastic teeth, some graininess can be appropriately retained, commonly used 40 mesh to 60 meshThe sieve.

Infant nutrition Rice noodlesHigh requirements for delicacy and blending, must be used 120目以上The ultra-fine sieve is used to achieve the degree of melting at the entrance.

2. Characteristics of rice raw materials
The initial state of the raw materials directly affects the screening efficiency.

Crushing particle sizeIf the previous crushing process is coarse, higher mesh screens are required for subsequent screening to control the final fineness; If ultrafine grinding has been used, the mesh size of the sieve can match it.

Moisture content and state: If the water content of rice paste or Rice noodles is too high, it is easy to agglomerate, which will seriously block the screen hole and reduce the screening efficiency. At this point, it may be necessary to reduce the mesh size appropriately or dry the material first.

3. Production process steps
The role of screen mesh varies in different stages, and the selection strategy also needs to be adjusted.

Powder filtration processThe main purpose is to remove impurities and large particles that have not been crushed, ensuring the uniformity of the powder slurry. The selection of the number of programs in this loop strictly follows the product type standards.

Broken powder recycling processThe mesh size of the sieve used for recycling and reusing broken rice noodles in productionMust be consistent with the mesh size of the mainline product productionTo ensure the consistent quality of recycled materials and new products, without affecting the overall quality.

4. Production efficiency and cost
The higher the mesh size, the smaller the pore size, the slower the screening speed, the lower the production capacity, and the greater the loss of the screen mesh. It is necessary to choose a cost-effective mesh that balances quality and cost while meeting product quality requirements.

2、 By following the following steps, the appropriate mesh size can be systematically determined:

1. Benchmark positioning
Based on the type of target product, refer to the aboveThe "product type" standard determines an initial range of mesh sizes.

2. Factor fine-tuning

Considering the characteristics of the raw materials and process status of the current batch, fine tune the initial range. For example, if you feel that the rice raw material is harder and has a noticeable graininess after crushing, you can consider choosing a higher mesh size within the initial range.

3. Experimental verification
This is the most crucial step. In selectingAfter 2-3 candidate mesh sizes (such as 100 mesh, 120 mesh), it is necessary to conductSmall batch trial production.Use different mesh sizes to process the slurry separately.Conduct the test on the prepared Rice noodles samplessensory evaluationandPhysical assessment，Record the contents under each categoryScreening efficiencyandScreen blockage situation.

4. Final determination
Analyze the experimental data and choose which one canStable production of standard products with excellent overall performanceNumber of items, set it as the standard process parameter for the product, and record it on file.

3、 Screen meshUsage and maintenance suggestions

1.Quality priorityChoose high-quality stainless steel material with even mesh holes to prevent metal wire from falling off and contaminating the product.

2.regular inspectionEstablish a regular inspection and replacement system to prevent product quality fluctuations caused by screen damage or pore size deformation.

3.dynamic managementWhen changing the origin or season of rice, due to possible changes in raw material characteristics, the experimental verification process should be restarted to confirm whether the original mesh size is still optimal.

The selection of screen mesh number in Rice noodles production is a process technology that combines scientific standards and practical experience. It is not a fixed number, but rather anProduct demand-oriented, withBased on the characteristics of raw materialsAnd throughRigorous experimentThe final determined dynamic optimization result. Establishing and following scientific selection standards and methods is an important cornerstone to stabilize the quality of Rice noodles and enhance product competitiveness.