Chocolate Filled Tube Bar Snack Machine

 Chocolate Filled Tube Bar Snack Machine Product Introduction

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 Chocolate Filled Tube Bar Snack Machine is a fully automated production line integrating core processes including batching, extrusion, shaping, chocolate coating, cooling, and packaging. It is specifically engineered for continuous production of crispy tubular bar snacks featuring uniform, smooth chocolate coatings - and filled centers.
This machine supports customization of diverse flavors and specifications: it can produce filled tube bars with sweet inner fillings (e.g., cream, jam) paired with various chocolate coatings (e.g., milk chocolate, dark chocolate, white chocolate). This versatility perfectly meets market demands for high-quality chocolate-filled snack products.
Whether you're a small-scale snack producer or a large food processing enterprise, our Chocolate Filled Tube Bar Snack Machine delivers a professional, efficient, and cost-effective production solution. We also provide customized services tailored to your specific production needs, helping you expand your product range and boost market competitiveness.

Core Working Process

Production Line Details

 

Air conveyor

 

Dryer

 

Flavoring machine

 

Raw Material Preparation & Batching

The main raw materials include rice flour, corn flour, starch, and other cereal flours. According to the product formula, these raw materials are mixed in a precise ratio. For filled tube bars, the inner fillings (such as liquid cream, jam, or nut butter) need to be preheated to a fluid state to ensure smooth transportation. The mixed cereal raw materials are conveyed into the mixer by a screw conveyor, and appropriate auxiliary materials (water, edible oil, sugar, etc.) are added to fully stir into a uniform dough-like material, laying a solid foundation for stable extrusion molding.

Twin-Screw Extrusion & Tubular Shaping

The well-mixed dough is fed into the twin-screw extruder. Under the combined action of screw rotation extrusion and high-temperature heating of the barrel (temperature is generally controlled at 120-180℃), the material undergoes puffing reaction to form a fluffy tubular bar blank. A special mold is installed at the extruder head, and the blank is extruded through the mold into a hollow tubular structure, which not only ensures the crispy texture of the product but also reserves space for filling (if needed).

Filling (Optional for Filled Products) If producing filled chocolate-filled tube bars, the hollow tubular blanks will move at a constant speed on the conveyor belt. When passing through the filling injection system, the high-pressure pump accurately injects the pre-prepared fluid filling into the hollow cavity of the blanks. The filling amount can be freely adjusted through the PLC control system to ensure uniform filling content of each tube bar, avoiding defects such as "hollow" or "filling overflow".

Automatic Core Filling Process

automatic filling unit - a key component of the Chocolate Filled Tube Bar Snack Machine that works in tandem with the extruder. This dedicated unit injects melted sweet fillings (e.g., cream, jam) into the hollow cavity of each tube bar.

Both the filling volume and injection speed are precisely calibrated to ensure every tube bar is evenly filled, with no under-filling or overflow. The entire process is synchronized with the extrusion speed, enabling continuous, high-efficiency production of uniformly filled tube bar snacks.

Fixed-Length Cutting

The extruded (or filled) tubular long strips pass through the rotary cutting machine, which cuts them into individual tube bar blanks according to the preset product length (e.g., 6-12cm) at high speed. The cut blanks have regular shapes and flat cuts; by replacing different molds, tube bars of different shapes (circular, square, special-shaped) can be produced to enrich product diversity.

Pre-Drying & Surface Treatment The cut tube bar blanks enter the continuous drying oven for pre-drying treatment. Through hot air circulation drying (temperature about 150-170℃), the excess moisture in the blanks is removed, making the surface dry and firm. This step not only enhances the crispness of the tube bars but also ensures that the subsequent chocolate coating can adhere firmly without melting due to excessive moisture.

Rapid Cooling & Solidification

The chocolate-filled tube bars immediately enter the rapid cooling tunnel. Under the action of low-temperature cold air circulation (temperature about 5-15℃), the chocolate coating is quickly solidified, ensuring the hardness and luster of the coating. The cooling time is precisely controlled (usually 3-8 minutes) to avoid cracking of the chocolate coating due to excessive temperature difference.

Sorting & Automatic Packaging

The cooled finished products pass through the vibrating sorting machine, which removes defective products with irregular shapes, uneven coatings, or unqualified weights to ensure the consistency of the finished products. Qualified chocolate-filled tube bars then enter the fully automatic packaging machine, which completes processes such as metering, nitrogen filling (to extend shelf life), sealing, and coding, and finally are packaged into bagged or boxed finished products ready for market circulation.

Technical Parameter

Equipment Advantages

Intelligent PLC Control System: The entire production line is controlled by an integrated PLC system, allowing precise adjustment of key parameters such as extrusion temperature, cutting length, filling amount, chocolate coating thickness, and cooling time. The operation interface is user-friendly, realizing automated and unattended production.

Food-Grade High-Quality Materials: The main body of the machine is made of 304 food-grade stainless steel, which has excellent corrosion resistance and high-temperature resistance. It complies with global food safety standards (such as FDA, CE) and ensures the purity and safety of snack products.

High Production Efficiency & Low Waste: The continuous production design greatly improves the output, with a production capacity of 50-500kg/h (adjustable according to model). The optimized process design minimizes raw material waste and energy consumption, effectively reducing the production costs of enterprises.

Strong Versatility: It can not only produce chocolate-filled tube bars but also be adjusted to produce other chocolate-coated snacks by replacing molds and adjusting processes. It also supports the customization of different chocolate types and filling flavors to meet the personalized production needs of customers.

Easy Maintenance & Cleaning: The key components of the machine (such as extruder screws, molds, and coating nozzles) are designed to be detachable. The surface of the equipment is smooth and easy to clean, which reduces the difficulty of daily maintenance and ensures the hygiene of the production process.

Packaging and Transportation