puffed food extruder-manufacture,factory,supplier from China

The puffed foods such as potato chips, french fries, etc. that we usually see are produced by the puffed food extruder. After a series of operation procedures, the delicious food is presented in front of us.

Extruder is the key of extruding technology. Extrusion processing technology as an economical and practical new processing method is widely used in food production, and has been rapidly developed. Extrusion processing mainly by an extruder step to complete the raw material mixing, curing, crushing, sterilization, pre-drying, molding and other processes, to make puffed, organized products or not puffed products.

The screw extruder was first used in the plastics industry, and its theoretical research started earlier, forming a variety of mathematical models used to describe the basic principles of flow and heat transfer in the extrusion process, using these models to achieve accurate extrusion machine simulation Design. The application of extrusion technology in the food industry is slightly later than that in the plastics industry, which is mainly due to the complexity of food raw materials.

Directly puffed food is generally required to be dried after extrusion processing. The moisture content of the dough in the extruder is 15%~20%. The product is then dried to reduce the moisture content to 2% to 3% to create the environment needed for a crunchy texture and stable shelf life. Due to the low density of the product, the drying time is usually very short, so it should be carried out in a warm warehouse.Coatings to produce direct-expanded products Extruded and dried products are finally sprayed with oils and seasonings.

When operating a twin-screw extruder, it should be maintained on time. The maintenance process is carried out after the twin-screw extruder runs continuously for 2500-5000h and shuts down. The screw is extracted to inspect, measure and identify the wear condition of the most critical components, replace the components that have reached the specified wear limit as soon as possible, and repair the damaged components . The maintenance standard of the reducer of the twin-screw extruder is the same as that of the ordinary standard reducer.

Indirect puffed snack foods are also known as "third generation snack foods". The production of these foods has a common characteristic: they are not puffed directly after coming out of the extruder template. Additional processing steps are required to give it the appearance or texture, which generally includes frying or hot air puffing processes to remove moisture to obtain the final texture.

Puffed food appeared in the market in the 1960s. Later, it quickly became popular in various countries because of its unique taste, simple eating and various patterns. It has long occupied the most frequently purchased snack types with chocolate, wafers and other foods.However, the long-term sales advertisements and puffed food have left us with a stereotyped image. Recently, many consumers said that when they saw the product category as "oil-containing puffed food", they were very worried about whether it was an unhealthy snack.

Extruder belongs to a kind of equipment for processing puffed food. It is a kind of equipment for processing puffed food, such as processing rice, corn, soybean, wheat, etc., in daily life.

Screw extruder is mainly used in the production of starch extruded food, protein extruded food and extruded feed in the food industry, and can also be used as a special chemical or biochemical reactor.Starch puffed foodThe starch in the grain will gelatinize (αize) under the high temperature and pressure of the extruder. The results showed that the degree of starch αization was more than 98% and the crude fat decreased by 60% or even disappeared after the puffed corn flour. Water solubility increased by more than 40%. Therefore, extruder can replace roller dryer to produce gelatinized starch.

Types and principles of puffed foodPuffed food, also known abroad as extruded food, explosive food, light food, etc., is a new type of food developed internationally in recent years. It uses grains, beans, potatoes, vegetables, etc. as raw materials, and is processed by puffing equipment to produce a wide variety of food with exquisite appearance, rich nutrition, crispy and delicious food.