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A factory plans to sell two rice-based products: a thicker rice noodle for foodservice and a fine rice vermicelli for retail packs. A supplier offers one extruder with two dies. That may be a useful starting point, but it does not settle whether the same feed preparation, temperature settings, strand handling, dryer, and packer can make both products at the required quality and output.
In this article, “vermicelli” means thin rice noodles made primarily from rice ingredients. It does not mean transparent glass noodles made mainly from mung bean, potato, or other isolated starches. Those products require a separate formulation and process review. The equipment question here is whether one rice noodle making machine can cover thicker and finer rice strands, with an optional multigrain SKU added later.
“Rice noodle” describes an ingredient family, not a single cross-section or manufacturing route. A buyer should identify whether each SKU is round or flat, fresh or dried, straight or bundled, and intended for boiling, hot-water rehydration, or direct foodservice use. A flat rice sheet cut into strips is a different forming task from extruding round strands; it should not be assumed to run through a round-strand die.
For the two round-strand products in this comparison, send the supplier physical samples or drawings. Record target strand diameter, length, surface appearance, texture after preparation, cooking loss, breakage limit, pack weight, and final moisture. The thin product may also need a defined portion or bundle shape. These specifications make a testable difference between the SKUs; the names alone do not.
| Project item | Thicker rice noodle | Thin rice vermicelli | What the supplier must verify |
|---|---|---|---|
| Forming | Larger round strand, if that is the approved SKU | Smaller round strand | Separate die designs, actual strand size after processing, stable flow, and die-cleaning method |
| Feed | Specified rice flour or prepared rice feed | Specified rice flour or prepared rice feed | Whether the same milling, hydration, mixing, and conditioning window works for both |
| Extrusion | Recipe established by trial | Recipe established by trial | Pressure, temperature, screw settings, throughput, and acceptable strand quality for each die |
| Take-off and treatment | Strand support, separation, and product-specific finishing | Gentle separation and handling of finer strands | Whether steaming, cooling, aging, drying, or other stages are needed for each finished product |
| Packing | Approved length, portion, and pack | Approved length, bundle or block, and pack | Accepted packs per hour and breakage after handling |
Start by stating whether the plant will feed dry-milled rice flour, wet-milled material, a rice slurry, or a prepared intermediate. This decision sets the upstream boundary. Whole-rice washing, soaking, milling, dewatering, and holding equipment should appear in the proposal only if the chosen route requires them. If the factory buys a controlled flour, the proposal should instead explain screening, storage, conveying, weighing, water addition, and mixing.
Even when both SKUs use the same rice source, a change in particle size, damaged starch, water absorption, or feed moisture can change die flow and cooked texture. Fine strands expose feed inconsistency quickly through strand breaks, uneven diameter, or sticking. Ask for ingredient specifications and a hydration window for each SKU, then test the actual local rice or flour. Shangbaotai describes a configurable flour supply system; whether it is suitable for the approved rice material and upstream route must be confirmed in the project proposal.
If a multigrain SKU is planned, do not treat it as a third die alone. Millet, corn, bean, or other additions can alter water uptake, viscosity, color, die pressure, and strand strength. Request a separate formula trial and identify whether blending, metering, preconditioning, or cleaning arrangements need to change. A study of brown-rice flour in extruded noodles found changes in gelatinization, break strength, and cooking loss when non-starch components increased. This is a reason to test the actual blend, not a performance prediction for a particular machine.
Shangbaotai's extruded noodle production system page lists rice noodles and vermicelli among possible products and says the extruder mold is customized to product requirements. It does not publish a validated die set or a promise that one purchased line will produce every requested diameter. Ask for drawings and a die schedule that names each SKU, opening geometry, hole count, material, spare parts, cleaning access, and trial-adjustment procedure.
A smaller opening can change resistance at the die and the way the product leaves it. Final strand size also depends on formulation and process conditions, so specifying only the nominal hole diameter is insufficient. The supplier should show samples from both dies and record pressure, temperature, feed rate, moisture, and accepted output at steady operation. Evaluate how the strands separate after the die, how a cutter or take-off device holds length, and how start-up product is removed.
Shangbaotai extrusion equipment shown in the company's product imagery. The photographed arrangement is a reference, not the specification for this project.
Build a changeover trial into the quotation. Time the complete sequence: emptying and cleaning the feed path, replacing the die, loading the next recipe, reaching stable operation, and approving the first acceptable product. Record discarded material and the tools required. A short mechanical die swap is not the same as a short production changeover.
The manufacturer's product page describes steam or electromagnetic heating and water-chiller cooling for its extrusion temperature-control system. It also refers to first and second extrusion stages. Those statements identify available design directions; they do not define the operating recipe for either rice product. Ask the engineering team to show the actual screw arrangement, control zones, measured points, heating and cooling loads, and which stages are used for each SKU. “Two-stage extrusion” must not be silently rewritten as “twin-screw extrusion.”
After the die, the required sequence depends on the approved product. Possible tasks include strand separation, steaming or other cooking, cooling, aging, cutting, drying, and final conditioning. A fresh product may have a different finishing and packaging route from a dried retail product. For dried vermicelli, the dryer must remove the required water without leaving wet centers or causing excessive breakage; the finer strand also changes loading and airflow behavior. Request a process flow for each SKU and mark every item included or excluded from supply.
Do not carry a wheat-noodle drying recipe into this project or assume one rice drying profile works for both diameters. Agree on initial and final moisture, residence time, product loading, temperature and humidity measurement, cooling condition, and acceptable breakage. The governing capacity may sit in the dryer or packer rather than at the extruder.
A shared line is a plausible proposal for two round, rice-based products when the supplier can validate both recipes and supply the necessary dies and downstream adjustments. It is a procurement decision, not a claim established by a catalog page. A flat rice noodle produced by sheeting and slitting, a fresh strand product, and a dry fine vermicelli may require different forming or finishing equipment. If the product range includes these routes, request a separate flow diagram and price for each route before accepting a “multi-product” label.
Compare capacity by accepted finished product, not motor rating or material entering the extruder. For each SKU, ask for wet output at the die, finished kilograms per hour after treatment, accepted packs per hour, pack weight, operating hours, and the assumed loss or reject basis. The finest strand or most fragile pack may govern the commercial output. For broader questions about line boundaries and utilities, see Shangbaotai's extruded noodle line buying guide.
Before purchase, provide representative rice or flour from the intended supplier, finished-product samples, target dimensions, formula restrictions, preparation instructions, package samples, target capacity for each SKU, and site utilities. If multigrain is in scope, provide that blend as a third trial material.
Ask each equipment supplier to return:
A process flow and equipment list from ingredient intake through accepted packs, with exclusions clearly marked.
A die and changeover schedule for both rice products, including trial modifications and spares.
Separate operating windows and output assumptions for each SKU, including the actual capacity bottleneck.
A utility schedule for heating, cooling, air, water, drainage, and electrical supply at the project site.
A factory trial plan covering steady operation, product changeover, strand dimensions, moisture, cooking response, breakage, cleaning, and accepted packaged output.
If the supplier proposes shared equipment, ask it to identify which modules stay fixed, which parts are exchanged, which settings change, and which product still needs additional testing. Send the two product specifications through Shangbaotai's contact page and request a SKU-by-SKU technical proposal rather than a single generic rice noodle machine quotation.
