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SUPPORT

FAQ

Q How is dry ice supplied?
It is desirable that dry ice be supplied in a stable manner without any price fluctuations as a consumable item used for the cleaner ESG always strives to produce high-quality pellets (dry ice) on our own and supply them to our customers while they are in optimal conditions so that the dry ice pellets can be stably supplied without any price fluctuations. One of the most important factors to consider when selecting an equipment provider is their ability to supply pellets in a stable and reliable manner. We sincerely hope that you make prudent purchasing decisions.
Q What is the price of the dry ice cleaner?
Dry ice cleaners significantly vary according to the type and purpose of use. They differ depending on the manufacturer and manufacturing method. ESG always endeavors to ensure a stable supply and the best quality for our customers. Please don’t hesitate to contact us and let us know what your specific purpose of use is, and we will immediately provide a consultation on the prices.
Q What objects can you clean using a dry ice cleaner?
Any foreign substances that may be easily broken into pieces when quick-frozen can be cleaned using dry ice pellets. Good examples are molds, form oil for molds, adhesives, water, paint, varnish, resin, wax, urethane, synthetic resin, molding material, rubber, silicone, synthetic rubber, baking debris, radioactive material (for decontamination), rust, and semiconductor-related sticky materials. However, given that the cleaning power can be significantly affected by the status and conditions (temperature, air pressure, and the state of dry ice particles) of the target object and foreign substances, it is impossible to clearly determine which objects can be cleaned or not. Therefore, the best way is to test them in practice.
Q Is there any harm to the human body or the environment when using the dry ice cleaner?
Dry ice is made of pure liquid carbon dioxide. This carbon dioxide, as a pure gas, makes up 0.03% of the atmosphere. Therefore, as long as you do not use this cleaner in an enclosed space for a long period of time, it does not cause any negative effects to the human body. No harm will occur to the human body due to the intrinsic nature of carbon dioxide, to be sure, but users have to make sure not to use this device in an enclosed space or a place without any ventilation system in place. After the cleaning, dry ice returns to the atmosphere. To make dry ice, we do not newly produce carbon dioxide but collect what is naturally generated. In other words, we recycle the existing carbon dioxide instead of newly generating it. This is why this equipment is garnering significant attention as an eco-friendly solution from all over the world.
Q What is the difference between the single-hose and double-hose systems?
The single-hose system is an approach where the air that flows through a hose vacuumizes the space to which dry ice is delivered off by the motor. With the effect of the vacuum, dry ice pellets are sucked into the inside of the hose and then sprayed. In the double-hose system, two hoses are placed near the spraying gun, and a vacuum space is created there. Similarly, with the effect of the vacuum, dry ice pellets are sucked and then sprayed. Accordingly, the double-hose system does not require electric power to transfer the dry ice pellets, but if the used hoses are too long, then the pressure arising from the vacuum source will become too weak to suck the dry ice pellets, unlike in the single-hose system.
Q What equipment is needed to conduct dry ice cleaning?
Cleaning equipment (the main equipment, hoses, nozzles, etc.), the air system that supplies pure and dry air (a compressor, aftercooler, airline, filters, etc.), and dry ice pellets are necessary. In an environment where the air system has already been in place, only cleaning equipment and dry ice pellets are required.
Q What is the difference between block-type dry ice and pellet-type dry ice?
It is impossible to thoroughly clean every nook and corner of the object using block-type dry ice only. Meanwhile, rice-grain-sized (about 3 mm) dry ice pellets are capable of emulating the effect of sand used in sandblasters and thus are considered to be more effective than dry ice blocks.
Q Does thermal shock affect the quality of the target object?
No, it's not, in general. Dry ice cleaning causes only a very small temperature change, which does not go beyond the limit typically required by products in general.
Q Is it possible to apply this equipment to a hot mold in an on-line state?
The hotter the mold surface is, the larger the temperature deviation becomes. This leads to a greater thermal shock, thereby accelerating the speed of dry ice cleaning. However, this thermal shock acts only on the surface, and thus the overall temperature of the mold does not decrease.
Q Does dry ice cleaning harm the target object?
Many people believe that the ultra-low temperature of dry ice may cause an unintended deformation and damage to the target object, depending on its type. In reality, however, the dry ice pellets used here have a very low hardness of 2 Mohs, and thus such an event never happens. Also, one may think that a temperature deviation that occurs in the process may cause severe damage, especially to metallic and other objects that are known to be susceptible to heat and high temperatures. Despite a number of experiments and observations that have been conducted, however, such an event has never happened in practice. For example, this cleaner was applied to semiconductor wafers and 10-mm glass plates, but such an event did not happen as long as a high-pressure spray (about 10 bar) was not intensively concentrated on a single spot.