Definition

Extruded and baked snacks are ready-to-eat leisure foods mainly made from grains (Corn, Rice, Wheat), potatoes or beans. Through physical processing methods such as Extrusion Expansion and Baking, the raw materials expand in volume and form a loose, porous structure, and then are flavored with sweet, salty, spicy, barbecue, tomato and other seasonings. These snacks are the core finished products of the puffed baked snack production line, which is designed to realize the standardized and large-scale production of such products.

The puffed baked snack production line relies on high temperature and high pressure or hot air baking to make grain materials expand and become crispy, and then processes them into various tasty snacks; the puffed baked snack production line integrates multiple processing links to ensure stable product quality, and the puffed baked snack production line is the key equipment for food enterprises to produce extruded and baked puffed snacks efficiently.

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Main Raw Materials

The main ingredients of puffed baked snack production line include:wheat flour, corn flour, rice flour, sugar, salt, starch, and minor additives.

Complete Production Process

Raw Material Mixing → Extrusion & Expansion → Shaping & Cutting → Baking & Drying → Flavoring & Coating → Cooling → Packaging

1. Raw Material Crushing and Sieving

Corn and other grains are first cleaned to remove stones, dust and impurities. Then they are crushed and sieved through 40–60 mesh to ensure uniform particle size, which guarantees stable expansion.

2. Ingredient Mixing

Corn flour, rice flour, starch, nutritional additives and other formula components are fully blended in a mixer to ensure even composition.

3. Moisture Adjustment

Appropriate water is added to adjust the moisture content to about 12%–15%.Insufficient moisture leads to poor expansion; excessive moisture causes rough pores and fragile products.

4. Extrusion and Expansion (Core Process)

The conditioned mixture is fed into a twin-screw extruder.Under 120–160 °C, high pressure and strong shearing, starch gelatinizes and melts completely.When extruded through the die into normal pressure, water vaporizes instantly, making the product expand rapidly into a porous structure. It is simultaneously cut into basic shapes.

5. Shaping and Cutting

The extruded product is further pressed, embossed (e.g., corn-cob shape) and precisely cut to achieve uniform appearance and size.

6. Baking and Drying

Extruded products have high moisture (8%–10%) and soft texture.Hot-air circulating ovens reduce moisture to below 3%–4%, making snacks crisp and extending shelf life.

7. Flavoring and Coating

Oil or syrup is first sprayed as an adhesive to improve taste and help powder adhere.

Seasoning powder (salt, spicy, barbecue, tomato, beef, etc.) is evenly coated in a rotating drum.

8. Cooling and Packaging

After flavoring, products are cooled to room temperature by air cooling to avoid moisture condensation and softening.Finally, they are automatically weighed, bagged and sealed.

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Characteristics and Advantages

Typical Features

Crisp texture: porous sponge structure gives light, crisp and melt-in-mouth taste.

Fully cooked: starch is completely gelatinized; ready to eat without further cooking.

Various shapes: rod, ball, tube, flower, ring, etc., by changing extruder dies.

Rich flavors: natural grain taste enhanced by surface coating with diverse seasonings.

Difference from Fried Snacks

The puffed baked snack production line adopts a non-fried processing mode, and the expansion of products comes from pressure difference and water vaporization. Oil is mainly coated on the surface, resulting in lower oil content of finished products.

In contrast, fried snacks are expanded in high-temperature oil, which absorbs more oil and has higher fat content. The processing mode of the puffed baked snack production line is more in line with the healthy consumption trend of modern consumers.

Samples

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