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
  • D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
  • D06M10/04—Physical treatment combined with treatment with chemical compounds or elements
  • D06M10/06—Inorganic compounds or elements
• • 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
  • D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
  • D06M10/02—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements ultrasonic or sonic; Corona discharge
  • D06M10/025—Corona discharge or low temperature plasma
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
  • D21F1/00—Wet end of machines for making continuous webs of paper
  • D21F1/0027—Screen-cloths
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
  • D21F1/00—Wet end of machines for making continuous webs of paper
  • D21F1/30—Protecting wire-cloths from mechanical damage

Definitions

• This invention relates to industrial fabrics and to a method of treating
• the invention relates for example to all forms of papermaking
• press belts shoe press sleeves, corrugator machine press belts, and also to
• a papermaking felt which includes a flow control layer
• the technology of plasma treatment is in the process
• a 'plasma' is a fluid state of matter wherein due to
• Polar molecules may be dissociated into anionic and cationic radicals, whilst
• Plasmas may be stripped from atomic shells. Plasmas can exist over an extremely thin film of gases.
• an industrial fabric comprises or includes
• the invention provides a method of making or
• preparing an industrial fabric including the step of subjecting at least one
• the invention also includes apparatus for use in making or preparing
• an industrial fabric including a plasma chamber to which material containing
• the purpose of the plasma treatment may be to modify the wetting
• the yarn or fibre surface is provided with activated sites
• This treatment may utilise glow
• the treated surface are permanent and far more durable.
• composition of the plasma e.g. improved softness in drying felts especially
• hydrophilic properties are
• a plasma comprising or containing oxygen, air or ammonia for example.
• a plasma comprising or
• a silane e.g. Si(CH 3 ) 4
• a siloxane e.g. (Si(OCH 3 ) 4 ) or a
• perfluorocarbon e.g. 1 -6C perfluoroalkane or tetrafluoroethylene or a
• Hard coatings of e.g. carbon may be formed by subjecting the surface
• resistant coatings can be applied by using a plasma comprising or containing
• halogenated hydrocarbons or unsaturated amines e.g. tetrachloroethylene
• the plasma may be
• a diluent gas such as helium
• the synthetic yarn or fibre containing material may be treated in the
• the apparatus may be arranged so that only one surface of a fabric
• the apparatus of the invention may comprise means for continuously
• the material may be introduced to the plasma chamber in batches, which are subjected to treatment and then removed.
• the operating pressure of the plasma chamber may be from in the
• FIG. 1 is a diagrammatic view of a plasma treatment machine according to the
• a fabric 10 e.g. a woven or nonwoven
• a dispensing station 1 1 is fed from a dispensing station 1 1. This is shown simply as a feed roll, but
• the fabric 10 is introduced through a self-sealing
• the fabric 10 enters and leaves the chamber 13 through self-sealing
• slots 1 2 and 14 as the plasma usually operates at a considerable under- pressure, often extremely rarified, e.g. 0.1 -3.0 mbar; and sometimes
• the chamber 13 is evacuated to the
• the plasma is created by ionising the molecules or atoms
• Treatment is achieved by exposing one or both surfaces of the fabric
• composition of the plasma will be selected in accordance with
• the plasma may be created from ordinary
• the plasma may be
• treatment are softness (oxygen plasma), crease resistance (dipped in DMSO,
• dimethylsilane plasma oil repellant finishes, improvement of capillarity, dye reception, dyeing depth, bleaching, UV-protection and flame retardancy may
• the fabric may instead of being fed continuously as illustrated, be
• the material to be treated may be in the form of synthetic fibres or
• a hydrophobic (water repellant) fabric may be used as a flow control
• a hydrophilic (with enhanced wettability) fabric may be used as a dryer
• a hydrophilic surface for a dryer fabric as in EP-A-0761872 obtains
• hydrophobic surface may be desirable for certain dryer fabrics for
• Batt staple fibres in press felts can be rendered
• a further possible use of the invention is by plasma treatment of
• belts such as extended nip press belts, shoe press sleeves, press belts for corrugator machines, conveyor belts, printing blankets, silicon wafer
• the reinforcing substrate surfaces improve bonding with the matrix polymer.
• polyester structural members such as yarns, fibres or fabrics (woven,
• nonwoven spiral link or membrane having excellent dimensionality
• Adhesion may be improved by
• ammonia or nitrogen plasmas are used.
• Yarns, fibres, films, membranes or finished fabrics may be any suitable.
• Yarns, fibres, films, membranes or finished fabrics may be any suitable.
• This may be used e.g. for a forming fabric which may be
• the raw materials are required (e.g. 30-100 mg per m 2 fabric); energy consumption is low, as no water is used which absorbs heat; labour costs
• unit area of fabric can be very low.
• the invention is applicable to all industrial fabrics, including conveyor

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Physics & Mathematics (AREA)
• Plasma & Fusion (AREA)
• Chemical & Material Sciences (AREA)
• Inorganic Chemistry (AREA)
• Chemical Or Physical Treatment Of Fibers (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Paper (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=10816315

Family Applications (1)

Country Status (6)

Families Citing this family (23)

Family Cites Families (5)

• 1997
  • 1997-07-24 GB GBGB9715508.9A patent/GB9715508D0/en active Pending
• 1998
  • 1998-07-20 EP EP98935174A patent/EP0998606A1/de not_active Withdrawn
  • 1998-07-20 JP JP2000504322A patent/JP2001511489A/ja active Pending
  • 1998-07-20 CA CA002298000A patent/CA2298000A1/en not_active Abandoned
  • 1998-07-20 WO PCT/GB1998/002168 patent/WO1999005358A1/en not_active Application Discontinuation
  • 1998-07-20 AU AU84526/98A patent/AU8452698A/en not_active Abandoned

Non-Patent Citations (1)

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