Cereal Bar is a portable snack mainly made of oats, nuts, seeds and dried fruits, which are pressed into shape by syrup or binder (such as honey, peanut butter). It lies between energy bars and snack bars, featuring high fiber, low added sugar and strong satiety. It is suitable as a breakfast meal replacement, fitness supplement and outdoor sports food. The "Nut Energy Bar/Grain Bar Production Line" of Hanyuan is mainly used for the industrial production of soft bar products such as energy bars, nut bars and grain bars, covering adhesive boiling, dry material weighing, dry/wet material mixing, cold working cutting and forming, chocolate coating, chocolate latte, metal detection and pillow packaging. This production line can achieve automatic proportioning and automatic mixing of materials.
Following is a detailed outline of the process:
- Pretreatment of raw materials:
- Oat/grain baking: Use an oven or roller baking machine to enhance the aroma. The temperature is usually controlled at 150-180°C, and the time is 5-10 minutes.
-Nut/dried fruit processing: Nuts need to be shelled and chopped (using a nut crusher), and dried fruits may need to be soaked to soften (for example, dates need to be mashed).
- Dry mixing of mixed ingredients:
-Dry-mixing:Dry raw materials such as oats, nuts, and seeds are pre-mixed in a screw mixer or paddle mixer.
-Wet-mixing: Heat the syrup (honey/maltose syrup) and oil (peanut butter/coconut oil) in a double-layered pot to 60-70°C to melt them, and then mix them with the dry ingredients.
- Flat pressing and forming:
-Lay the mold flat:The mixed materials are sent into the pressing and forming machine through a conveyor belt and pressed into sheets of uniform thickness (usually 1-2cm) by a roller press or a hydraulic forming machine.
-Mold forming (optional) : Some products are cut into fixed shapes (such as square, round) using molds.
- Baking/Cooling Baking (such as hard grain bars) :
-Baking (such as hard grain bars):Use a tunnel oven at 160-180°C for 10-20 minutes (soft energy bars may not require baking).
-Cooling: Cool down to room temperature through a cooling conveyor belt or air-cooling system to prevent condensation after packaging.
- Longitudinal and transverse cutting:
Longitudinal cutting & transverse cutting:Use a multi-functional cutting machine (such as a reciprocating blade or rotary cutting machine) to cut into standard sizes (such as 3×5cm).
- Automatic packaging machine:
-Pillow packaging: (suitable for individual grain bars),
-box/bag packaging:(for multiple combinations, a box packaging machine is required), -nitrogen-filled packaging (optional) : Extended shelf life, modified atmosphere packaging machine is needed.
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