Classifications

• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
  • D06M11/73—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof
  • D06M11/74—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon or graphite; with carbides; with graphitic acids or their salts
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
  • D06M23/08—Processes in which the treating agent is applied in powder or granular form

Definitions

• the object of the invention is a method and an apparatus for production of carburized fibres in the thermal bonding process of powdered carbon and thermoplastic fibres.
• the method of carburized fibres production is known as joining of the active carbon by means of bonding agents, which mostly are binders like latex, rubber and synthetic resins. After fibres impregnation by a binder and removing of its excess, the powdered carbon is coated and all together is dried in a temperature appropriate for a given binder. This method causes reduction of potential carbon activity even up to 50% by sealing some of pores.
• the method of coating of the powdered carbon on fibres produced directly from the polymer, in the moment of fibres production is also known. This method does not assure durability of the bonding between the active carbon and the fibres surface.
• the apparatus consists of five block areas First supply area is equipped with shaft co-operating with rewinder and transporter with a stretcher unit facilitating travel of the nonwoven under the area with the container including active carbon
• the area of carbon spreading connects with the area of radiator heating and next with the cooling area equipped with the cooling fan
• the final area of the apparatus is layshaft cooperating with a winder and receiving shaft
• the chutes for accumulation of not bonded carbon are placed under the container with active carbon and also under the radiator and the fan
• the thermal bonding method of powdered active carbon and thermoplastic fibres has been worked out
• the method relies on the fact that the fibres are mechanically guided in a form of the cable and at the beginning they are spread with active carbon and then in a stretch state they are exposed to high temperature operation, which plastifies the fibres and causes melting of carbon into their structure and then they are taken out of the operation area and preferably exposed to crimping process
• the cable of fibres spread with active carbon taken out from the area of high temperature operation, before crimping process is preferably additionally heated up and mechanically burnished
• the apparatus according to the invention has a chamber for active carbon spreading with a feeder and a heater that plastifies fibres It also consists of a set of shafts which stretch and expand the cable of fibres, placed between the chamber for active carbon spreading and the heater, behind which there is a head for fibres crimping with the set of squeezing-receiving shafts.
• the apparatus preferably has additional heater situated adjustable to the plast
• the method and the apparatus according to the invention assure large uniformity of active carbon spreading and durable bonding with the fibre structure.
• Carburized cable of fibres after earlier cut on the appropriate sections, enables easy production of nonwoven or yarn and from them woven and knitted fabrics, which allow wide usage in the different branches of industry.
• the object of the invention is shown as an exemplary, schematic model in figure.
• the apparatus consists of the feeder 5 and the chamber 4 for active carbon spreading.
• the fibres in the form of a cable 1 are supplied to the chamber.
• the cable that is a strip of continuos, preferably unary fibres without determined twist, is taken from the container 2 by means of set of feeding shafts 3 with velocity which enables introducing non stretched strip with loose fibres.
• the cable introduced to the chamber with excess is waved and has cross-section of oval shape similar to ellipse. This facilities penetration of carbon particles, deep into a cable mass.
• the radiator heater 7 is situated on the upper part, behind the chamber with feeder.
• the cable I is supplied to this heater in a stretch state by means of the set of stretch-expand shafts 6, which cause flattening and widening of the cable at least two times in comparison to its cross-section in the carburizing chamber.
• the heater In the heater it is exposed to high temperature operation, which plastifies the fibres and causes melting of the active carbon into their structure.
• Air temperature in the heater is adjusted in the range from 90 to 150°C, depending on softening point of fibres included in the cable.
• the cable is guided through area of heat treatment with velocity ranges from 1 to 15 m/min by means of the set of squeezing-receiving shafts 9 with adjustable pressure ranges from 0,5 MPa to 3 MPa
• This set coupled with drive motor 11 is situated close to the head 10 for fibres crimping, in which the apparatus is preferably equipped with
• the velocity of the set of shafts is adjusted depending on line mass of the cable and masses of the singular fibres in the cable It assures plasticization of the fibres in the heating area and proper initial bonding with carbon particles
• Different kinds of continuos thermoplastic fibres are suitable for carburizing process For example polipropylen fibres with line mass ranges from 5 to 20 dtex, formed initially in the cable with line mass ranges from 20 to 100 ktex
• the apparatus is additionally equipped with electric heater 8 situated preferably adjustable according to the cable of fibres 1, between the heater 7 and set of shafts 9
• This heater placed in appropriate distance, additionally plastifies fibres and enables bonding of the nonbonded in the heater carbon particles with the fibre structure It is done together with the burnishing process of the fibres cable by the set of shafts 9 Generally, this process increases durability of the carbon bonding with the fibre structure and the quantity of the bonded carbon After crimping process in the head 10, the cable with carburized fibre is gathered in the container Y2
• the cable of fibres after leaving the heater is additionally heated up by the heater 8 and next burnished by means of the set of shafts 9 after which it is crimped in the head K) Solidification of the fibres structure is performed in the ambient air. Crimping of the fibres executed in the head increases their grafting and improves their yarn properties.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Nonwoven Fabrics (AREA)
• Inorganic Fibers (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=20072822

Family Applications (1)

Country Status (3)

Family Cites Families (1)

• 1998
  • 1998-09-12 PL PL98328547A patent/PL187338B1/pl not_active IP Right Cessation
  • 1998-12-18 WO PCT/PL1998/000048 patent/WO2000015895A1/en not_active Application Discontinuation
  • 1998-12-18 EP EP98960119A patent/EP1030942A1/en not_active Withdrawn

Non-Patent Citations (1)

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