This is an electronic machine for filter winding. We at MMP are manufacturers of string wound filters for over 15 years. We have now developed machine with a unique software. The main feature of this software is merely by input of the data like length, micron and pattern of the desired cartridge, machine can be started by pushing a button. Different type of yarns like Polypropylene, Polyester, Rayon etc. can be used. In no time we get the desired string wound cartridge with beautiful diamond shape patterns on it denoting its' micron ratings. Different pattern can be made by feeding in the required data thereby getting the desired micron.
Hydro Wound Cartridge Hydro Wound cartridge is made of polypropylene yarn, which is manufactured by mmp. The yarn is wrapped around the core. The winding pattern depicts the micron of the cartridge. We can produce cartridge from 10 inches to 50 inches as required.
Polypropylene: Polypropylene is used mainly for production of water filter cartridges, due to its inertness towards acid, and alkalis, strong oxidising agents, and strong corrosive liquids and gases. It is mainly used for filtration applications. Uses in ultrapure liquids, electronics, and plating and industries is another segment where polypropylene filters are used.
Cotton: Natural cotton is another good choice for the filters, and is suitable and used for oil, water, paint, organic solvent, and petroleum. Usually, natural cotton is not FDA approved. Bleached cotton is thereby used to meet the FDA standards, and used in applications such as distilled water, beverages, vegetable oil, petrol, fatty acids, and alcohol.
Rayon: Rayon has properties and uses similar to cotton, but it is coarser, and less absorbent. It also swells in aqueous solutions. The advantage of using Rayon is in high temperatures.
Polyester: Polyester yarn is used for production of water filter cartridges, and similar to polypropylene, with temperature resistance of 150ºC.
Nylon: Nylon raw material is used for special process applications, concentrated alkalis, and hydrocarbons. Itcan also be used for temperatures upto 150ºC.
Glass fibre: For higher temperatures up to 400ºC, glass fibre filter cartridges are used.
MMP produces yarn with various raw materials which are used for producing filter cartridges such as cotton, Nylon, polypropylene, Rayon, glass fiber etc. Apparently, cotton fiber has very good absorbency property, but the disadvantage of cotton fiber is that if it remains in water for a long time, then its starts to degrade, and reduces the life span. The filter will then release an odor due to its surface getting coated with algae. However, cotton is very good option for filtration application, where high temperature prevails, and where polypropylene cannot withstand temperatures. Amongst all man-made fibers, polypropylene has the least affinity for water. Hence polypropylene could be considered next to glass fiber filters. Glass on the other hand, needs to be handled very carefully due to its brittleness.
Compared to any other fiber, Polypropylene is relatively inert, and hence it is regarded to be the best suited material for filtration application in oil and water applications.
Having the fiber selected, it then has to be converted into yarn by spinning technology for manufacturing the string would filter cartridges. It is important to mention that the yarn made out of continuous filament would not be very effective. The reason for this is that when the continuous filament are twisted together to form a yarn, they will not be hairy. Hairiness is an inherent property of filtration yarn along with its compactness, & its twist level which is achieved at its best by MMP through its friction spinning technology.
Hairiness of the yarn is a key role playing factor for particle capturing. Compactness is an indication of the bulkiness, which may reflect in the of yarn diameter, whereas the twist are an indirect indication of compactness / bulkiness of the yarn.
We can conclude that higher twisted yarn would have lower diameter or higher turns per inch, where as a bulky yarn would have higher diameter or fewer turns per inch. Again, compactness depends on the technique that is used while spinning the yarn. MMP has vast experience of the filtration yarn since 1995. Looking at all the factors mentioned above MMP Filtration ensures the following parameters while they make the filtration yarn for the filtration industry.
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