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Comparison between Aseptic Cold Filling and Traditional Hot Filling
Date: 2025-08-21Read: 22

What is aseptic cold filling?

Aseptic cold fillingIt refers to being inAseptic environmentBelow, willMaterials cooled to room temperature after sterilization at low temperatures, filled toAseptic containerIn the middle, and immediately useAseptic lidThe entire process of sealing.

The core lies in the perfect combination of four 'sterile' elements:

  1. Aseptic materials

  2. Aseptic packaging container

  3. Aseptic bottle caps

  4. Aseptic filling environment

Any missing link can lead to filling failure and product spoilage.


2、 Why do we need sterile cold filling? Comparison with traditional hot filling

The best way to understand its value is to compare it with traditional methodsHot fillingCompare and contrast.

feature Aseptic cold filling Traditional hot filling
process flow After the material undergoes instantaneous sterilization at ultra-high temperaturesRapid coolingFill at room temperature in a sterile environment. After sterilization at high temperature, the material isHigh temperature (85-92 ℃)Pour it into the container and sterilize the inner wall of the container with residual temperature.
Impact on materials minimalUsing UHT ultra-high temperature instantaneous sterilization, the heating time is extremely short, and then immediately cooled, maximizing the retention of the beverageColor, flavor, and vitaminsWaiting for thermosensitive nutrients. largerProlonged exposure to high temperatures can easily lead to cooking odors, color changes, loss of aroma, and nutritional damage.
容器要求 availablelightweightPET bottle (heat-resistant about 60-70 ℃), bottle shape designHigh degree of freedom. must useheat-resistantPET bottles (heat-resistant ≥ 95 ℃) have limited wall thickness, weight, and shape design (requiring heat-resistant deformation).
energy consumption lowerOnly energy is consumed when sterilizing materials and equipment, without the need to heat and cool bottles. higherIt is necessary to continuously heat the material and maintain high temperature, and after filling, a large amount of water needs to be sprayed to cool the bottle.
Finished product quality Fresh taste, closer to the original flavor. The bottle body is transparent and beautiful without deformation. Easy to have a "steaming and boiling flavor", and the color may deepen. The bottle may have a "concave neck" due to thermal deformation.
cost The initial investment in equipment is extremely highButLow cost of packaging materialsThere is an advantage in comprehensive operating costs. The equipment investment is relatively low, butHigh cost of packaging materialsThick bottles also have high energy and water consumption costs.

brief summary: Used for aseptic cold fillingExtremely high equipment and technological barriersIn exchangeBetter quality products, lower packaging costs, and more flexible packaging designs.