Product Description
Here are the steps to make core - filling snack food using a twin - screw extruder: ### 1. Raw material preparation - **Outer layer materials** - **Starches**: Common starches like corn starch, potato starch, or wheat starch are often used. They provide the structure and texture for the outer layer. You may need to pre - gelatinize some starches to improve the processing properties. - **Flours**: Such as wheat flour, which can contribute to the taste and strength of the outer layer. - **Protein sources**: Plant proteins like soy protein or whey protein can be added to enhance the nutritional value and texture. - **Additives**: These include salt for flavor, sugar for sweetness, and stabilizers like xanthan gum or carrageenan to improve the texture and stability of the outer layer. - **Core filling materials** - **Sweet fillings**: Jam, chocolate paste, or fruit purees can be used to create a sweet core. These fillings can be made from natural fruits or processed with added sugars and thickeners. - **Savory fillings**: Cheese spreads, meat pastes (in some non - vegetarian options), or vegetable purees can be used for savory snacks. Seasonings like herbs, spices, and salt are added to enhance the flavor. ### 2. Formulation and mixing - **Outer layer formulation**: Calculate the appropriate ratios of starches, flours, proteins, and additives. Mix these dry ingredients thoroughly in a large mixer. Then, gradually add water or other liquid ingredients (such as milk or juice) to form a homogeneous dough - like mixture. The moisture content of the outer layer mixture is crucial and typically ranges from 20 - 40% depending on the specific recipe. - **Core filling preparation**: For sweet fillings, heat and stir the jam or fruit puree to ensure a smooth consistency. If using chocolate paste, melt the chocolate and add any desired flavorings or stabilizers. For savory fillings, cook and blend the ingredients until they reach a spreadable texture. ### 3. Twin - screw extruder setup - **Temperature settings**: Set up different temperature zones along the twin - screw extruder barrel. The initial zones are usually set at a relatively lower temperature (around 40 - 60°C) to prevent premature cooking of the outer layer materials. As the materials move towards the die, the temperature gradually increases to 100 - 150°C to fully cook and gelatinize the starches. - **Screw speed**: Adjust the screw speed according to the viscosity of the outer layer mixture. A slower screw speed may be suitable for a more viscous dough, while a faster speed can be used for a thinner mixture. The screw speed also affects the residence time of the materials in the extruder, which in turn impacts the cooking and shaping process. - **Die selection**: Choose a die with an appropriate shape for the outer layer of the snack. Common die shapes include circular, oval, or rectangular. The die should also have a mechanism to introduce the core filling into the center of the extruded outer layer. ### 4. Extrusion process - **Feeding the outer layer**: Feed the prepared outer layer mixture into the twin - screw extruder through the hopper. The twin - screws will convey, mix, and shear the materials, gradually cooking them as they move through the barrel. - **Incorporating the core filling**: Use a separate feeding system to introduce the core filling into the center of the extruded outer layer as it exits the die. This can be achieved through a co - extrusion process, where the core filling is pumped into the center of the outer layer stream. - **Shaping and forming**: The combined outer layer and core filling are extruded through the die, forming the desired shape of the snack. The extruded product may be in the form of a log, which can then be cut into individual pieces using a cutter attached to the extruder. ### 5. Post - processing - **Cooling**: Allow the freshly extruded snacks to cool at room temperature or in a cooling tunnel. Cooling helps to solidify the outer layer and the core filling, giving the snack its final texture. - **Coating (optional)**: Some core - filling snacks may be coated with additional ingredients. For example, they can be dusted with powdered sugar, cocoa powder, or cheese powder to enhance the flavor and appearance. - **Packaging**: Once the snacks have cooled and any optional coatings have been applied, package them in appropriate packaging materials, such as plastic bags, boxes, or trays. Ensure proper sealing to maintain the freshness and shelf - life of the product. ### 6. Quality control - **Appearance inspection**: Check the shape, size, and color of the snacks. They should be uniform in appearance with no visible signs of cracks or uneven filling distribution. - **Texture evaluation**: Assess the texture of the outer layer and the core filling. The outer layer should be crispy, chewy, or have the desired texture as per the recipe, while the core filling should be smooth and well - integrated. - **Flavor testing**: Taste the snacks to ensure that the flavor of the outer layer and the core filling is balanced and appealing. Adjust the formulation if necessary to improve the taste. - **Moisture content analysis**: Measure the moisture content of the snacks to ensure it is within the appropriate range for the desired shelf - life and texture.
Company Profile
snack extruder snacks extruder food extruder
Jinan Sunward Machinery Co., Ltd is an industry and trade integrated enterprise. The company is committed to R & D extrusion machinery and related ancillary equipments. It is covering mainly machinery and equipment for corn meal milling system, corn flakes/breakfast cereal system, baby food system, corn puff snacks system, pellets system, artificial rice system,soy nuggets system; as well as pet food/fish food system.Jinan Sunward Machinery Company's workshop was founded in 2009. All machines were exported to all over the world by export agent. Company begin to have Independent import and export rights in 2014. For supplying best service, technology department, Sales department, producing department , after- sales department are always available for you. Sales department includes two international sales department and two domestic sales department. Our machines have been exported to many countries of Asia, America, Africa, Europe etc. Machines are welcome in the countries. So until now, there are not only direct customers, but also some long term cooperation agents. Such as Indonesia agent, Iran agent, Nigeria agent and so on. Don't hesitate to contact us. Sunward team from pre- service to after-service will prove your choice is worth it.
SPECIFICATIONS
| Model |
Main motor |
Output |
| TSE65 |
22kw |
100kg/h-150kg/h |
| TSE70 |
30kw |
200kg/h-250kg/h |
| TSE85 |
55kw |
300kg/h-500kg/h |
| TSE90 |
75kw |
800kg/h-1000kg/h |
Certification
Package
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