DREF spinning, which is conventionally known as ‘friction spinning’, operates on the basis of mechanical/aerodynamic spinning system with an internal suction and same direction of drums rotation. Drafted slivers are opened into individual fibres by a rotating carding drum covered with saw tooth type wire clothing. The individualised fibres are stripped off from the carding drum by centrifugal force supported by an air stream from the blower and transported into the nip of two perforated friction drums where they are held by suction. The fibres are sub-sequentially twisted by mechanical friction on the surface of the drums and produced yarns result in high resilience with bulkiness and high air permeability.

The core-sheath combination produced offers improved resistance, strength and combination of different yarns like copper, stainless steel in core, which can be used for various applications.

Applications & Reasons

A. 0.6Ne -1.5Ne-filter cartridge

B. 7Ne- for filter fabric where the weft of the filter fabric is with friction spun yarn (Due to high air permeability of the DREF friction spun yarn, the dirt holding capacity of the filter cartridge and the filter fabric increases tremendously. It also helps the filtration process with higher efficiency)

C. Friction products such as brake lining, brake shoe, clutch lining, etc are in high demand. Yarn produced through this process is in very high demand. After processing the friction spun ,the other yarns are used to combine on TFO to produce yarns which are used for applications using multifilament glass fibre yarn or UHMWPE as core yarn with para aramid fibre as sheath

• Cut resistant gloves

• Apparel

Other areas where core spun through friction spinning are used is shoes, ropes and industrial cable manufacturing. Filler cartridge for liquid filtration is also effectively made with these yarns. Secondary carpet backing for tufted carpets can be produced with waste fibres in this spinning system. Upholstery, table cloths, wall coverings, curtains, handmade carpets, bed coverings, and other decorative fabrics can be produced economically by DREF spinning system. Heavy flame-retardant fabrics, conveyor belts, clutches, brake linings, friction linings for automobile industry, gaskets are some other examples where the DREF yarns can be effectively used.

Filter fabrics:

Polypropylene filter cloth is extensively used in in liquid-solid filtration, mainly for its excellent filter cake release and good resistance to most acids and alkalis. Thanks to its super low moisture absorption, woven polypropylene in weft on filter fabric in twill, plain weaves is a preferred selection for filtration purposes.

Advantages of PP Filter Fabric:

• Filter life cycle will increase

• Lightest weight among synthetic fabrics

• Excellent gas permeability

• Free of mildew and oxidation

• Good resistance against acids, alkalis and reducing agents

• Available for large to fine particle filtration

PP Filter Fabric is commonly used in:

• Chemicals

• Pharmaceuticals

• Sugar

• Non-ferrous metal smelting

• Sewage treatment and many more

PP Secondary Carpet Backing:

Colour, texture, type… always things to consider for any carpet purchase. But, if you flip it over, you’ll find something else that is important – the backing. So, what exactly is carpet backing? The underside of a carpet is also called the backing. It secures the tufts and gives the carpet additional strength and dimensional stability. Most carpets have a double backing: Primary Backing, where the yarn is tufted into, and Secondary Backing, which is the outer material made from polypropylene and is lightweight, strong, dimensionally stable, mildew resistant, economical, has moisture wicking property and is more durable and long lasting than the traditional backing. Polypropylene is being used widely for secondary carpet backing these days.

Based on its experience, Ahmedabad-based MMP Filtration Private Limited is working to increase increasing general awareness of DREF Friction Spinning Technology and its uses and advantages.

“MMP is set out to carve its niche in making Futuristic Fabric for a sustainable and better world. We live by the ideology of ‘Dream, Create, Produce’ to bring about yarns that will create a world of difference and elevate India ahead of the completion on global map. At MMP, technology, innovation and experience are integral not only to spinning new yarns, but also to spinning a roadmap for the future,” says MMP Filtration executive director Nilesh Todi.