WO1988005091A1 - Anti-static flocked material - Google Patents

Anti-static flocked material Download PDF

Info

Publication number
WO1988005091A1
WO1988005091A1 PCT/GB1987/000004 GB8700004W WO8805091A1 WO 1988005091 A1 WO1988005091 A1 WO 1988005091A1 GB 8700004 W GB8700004 W GB 8700004W WO 8805091 A1 WO8805091 A1 WO 8805091A1
Authority
WO
WIPO (PCT)
Prior art keywords
fibres
conductive
blended
properties
conductive fibres
Prior art date
Application number
PCT/GB1987/000004
Other languages
French (fr)
Inventor
Barry Dawber
Original Assignee
Bonar & Flotex Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to GB08614846A priority Critical patent/GB2177025B/en
Application filed by Bonar & Flotex Limited filed Critical Bonar & Flotex Limited
Priority to PCT/GB1987/000004 priority patent/WO1988005091A1/en
Publication of WO1988005091A1 publication Critical patent/WO1988005091A1/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H11/00—Non-woven pile fabrics
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N7/00—Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
    • D06N7/0063—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf
    • D06N7/0068—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf characterised by the primary backing or the fibrous top layer
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2201/00—Chemical constitution of the fibres, threads or yarns
    • D06N2201/02—Synthetic macromolecular fibres
    • D06N2201/0245—Acrylic resin fibres
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2201/00—Chemical constitution of the fibres, threads or yarns
    • D06N2201/02—Synthetic macromolecular fibres
    • D06N2201/0263—Polyamide fibres
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2205/00—Condition, form or state of the materials
    • D06N2205/04—Foam
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/04—Properties of the materials having electrical or magnetic properties
    • D06N2209/041—Conductive
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/04—Properties of the materials having electrical or magnetic properties
    • D06N2209/046—Anti-static

Definitions

  • This invention relates to an anti-static flocked material and a method of manufacturing such a material.
  • the invention is particularly, but not exclusively, concerned with floor coverings, typically nylon or acrylic pile carpet.
  • a flocked material characterised by a blend of fibres having electrical conductive properties and non- conductive fibres, the blended fibres being located on an adhesive coated base, whereby the material has desired anti-static properties.
  • the blended fibres comprise 1? ⁇ by weight of the conductive fibres, and the base comprises a glass fibre scrim backed with foam plastics.
  • the invention also provides a method of manufactur ⁇ ing a flocked material, the method comprising providing fibres having electrical conductive properties, blending the conductive fibres with non-conductive fibres and electrostatically flocking the blended fibres on to an adhesive coated base, whereby the conductive fibres produce a material with desired anti-static properties.
  • the conductive fibres are cut to a desired length independently of cutting of the non- conductive fibres to a desired length.
  • the conductive fibres may then be blended with the non-conductive fibres at a stage where the fibres are treated in an aqueous mixture to be provided with properties required for electrostatic flocking.
  • the conduc ⁇ tive fibres are blended with the untreated fibres prior to being cut together with the non-conductive fibres.
  • Flocking may be carried out in conditions of betw ⁇ een 40 and 6 ⁇ % relative humidity and in a temperature range of 18 to 21 °C.
  • Fibre of nylon or acrylic type for use in forming the pile of a carpet is preferably supplied in a non- crimped tow format and is preferably of round cross- section with 1.5? ⁇ delustrant added.
  • the continuous filaments in the tow are then cut to a flock having a length of 2.15 mm using a guillotine cutter, the fibre being cut wet to minimise damage, due to the heat gener ⁇ ated during the cutting operation, and also to allow the fibres to slip easier and hence better packing to be obtained .
  • Fibres of nylon or acrylic type are treated to have electrical conductive properties by the introduction of conductive particles into the polymer prior to the fibre manufacturing process, are assembled into tow form, and are then cut in the same way as the untreated fibres and to the same length.
  • the flock is subjected to a dye ⁇ ing process in which some types of conductive fibres are prone to relaxation and curling, so that the untreated fibres are firstly pre-dyed. Subsequent blending of the untreated fibres with the conductive fibres is carried out when the flock is treated in an aqueous mixture of common salt and a quaternary cationic finish to give the flock the necessary flow and electrical properties for electrostatic flocking.
  • the resultant treated and dried flock is then flocked, mechanically or electrostatically, in a condi ⁇ tioned room preferably at a relative humidity between 40 and 60% and in a temperature range of 18 to 21°C.
  • a carpet 10 flock 12 is located in a pvc adhesive 14 which is coated on a glass fibre scrim 16 backed with a pvc foam plastisol 18.
  • the composite is then passed through to an oven where the adhesive 14 is cured and the pvc foam 18 is blown to the required thickness.
  • the conductive fibres can be blended with the untreated fibres at an early stage so that the fibres can be cut together in the correct percentage composition.
  • the flock is scoured and is left undyed with the colours subsequently being applied by printing.
  • the blended fibres comprise 1 % by weight of the conductive fibres.
  • conductive fibres increase current discharge, limiting maximum field strength obtainable with electrostatic flocking.
  • the degree of increase depends on the relative humidity of the flocking operation.
  • the technique can be applied to all conductive nylon and acrylic non-crimped fibres, with the diameter of the conductive fibres being greater or lesser than the untreated fibres.
  • the anti-static properties of the resultant carpet are permanent and do not affect carpet wear, cleaning or soiling properties.
  • the length of the fibres may be other than that described and the conduc ⁇ tive fibre length may differ from the untreated fibre length.
  • the percentage by weight of the conductive fibres in the blend need not be restricted to that described and the flocking conditions may vary if necessary .

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Laminated Bodies (AREA)
  • Carpets (AREA)

Abstract

In a flocked carpet, fibres having electrical conductive properties are blended with non-conductive fibres, the blended fibres comprising 1 % by weight of the conductive fibres. The respective fibres can be independently cut and blended when the flock is treated in an aqueous mixture to be provided with properties for electrostatic flocking. The formed carpet has permanent anti-static properties.

Description

Anti-Static Flocked Material
This invention relates to an anti-static flocked material and a method of manufacturing such a material. The invention is particularly, but not exclusively, concerned with floor coverings, typically nylon or acrylic pile carpet.
Static build-up in nylon carpets is presently a widespread problem where carpets are formed of nylon pile on a plastics or rubber backing. It is an object of the present invention to obviate or mitigate such problems .
According to the present invention there is provided a flocked material characterised by a blend of fibres having electrical conductive properties and non- conductive fibres, the blended fibres being located on an adhesive coated base, whereby the material has desired anti-static properties.
Preferably the blended fibres comprise 1?ό by weight of the conductive fibres, and the base comprises a glass fibre scrim backed with foam plastics.
The invention also provides a method of manufactur¬ ing a flocked material, the method comprising providing fibres having electrical conductive properties, blending the conductive fibres with non-conductive fibres and electrostatically flocking the blended fibres on to an adhesive coated base, whereby the conductive fibres produce a material with desired anti-static properties.
Preferably the conductive fibres are cut to a desired length independently of cutting of the non- conductive fibres to a desired length. The conductive fibres may then be blended with the non-conductive fibres at a stage where the fibres are treated in an aqueous mixture to be provided with properties required for electrostatic flocking. Alternatively the conduc¬ tive fibres are blended with the untreated fibres prior to being cut together with the non-conductive fibres.
Flocking may be carried out in conditions of betw¬ een 40 and 6Ω% relative humidity and in a temperature range of 18 to 21 °C.
An embodiment of the present invention will now be described by way of example only, with reference to the single figure of the accompanying drawing which is a sectional elevation through a carpet.
Fibre of nylon or acrylic type for use in forming the pile of a carpet is preferably supplied in a non- crimped tow format and is preferably of round cross- section with 1.5?ό delustrant added. The continuous filaments in the tow are then cut to a flock having a length of 2.15 mm using a guillotine cutter, the fibre being cut wet to minimise damage, due to the heat gener¬ ated during the cutting operation, and also to allow the fibres to slip easier and hence better packing to be obtained .
Fibres of nylon or acrylic type are treated to have electrical conductive properties by the introduction of conductive particles into the polymer prior to the fibre manufacturing process, are assembled into tow form, and are then cut in the same way as the untreated fibres and to the same length.
Where the flock is to form the pile of carpet tiles or contract carpeting, the flock is subjected to a dye¬ ing process in which some types of conductive fibres are prone to relaxation and curling, so that the untreated fibres are firstly pre-dyed. Subsequent blending of the untreated fibres with the conductive fibres is carried out when the flock is treated in an aqueous mixture of common salt and a quaternary cationic finish to give the flock the necessary flow and electrical properties for electrostatic flocking.
The resultant treated and dried flock is then flocked, mechanically or electrostatically, in a condi¬ tioned room preferably at a relative humidity between 40 and 60% and in a temperature range of 18 to 21°C. Referring to the drawing, to form a carpet 10 flock 12 is located in a pvc adhesive 14 which is coated on a glass fibre scrim 16 backed with a pvc foam plastisol 18. The composite is then passed through to an oven where the adhesive 14 is cured and the pvc foam 18 is blown to the required thickness.
Alternatively the conductive fibres can be blended with the untreated fibres at an early stage so that the fibres can be cut together in the correct percentage composition. In the case of domestic carpeting, for example, the flock is scoured and is left undyed with the colours subsequently being applied by printing.
Further it is possible to dry blend the conductive fibres and the untreated fibres to the required composi¬ tion.
The blended fibres comprise 1 % by weight of the conductive fibres.
Experience has shown that conductive fibres increase current discharge, limiting maximum field strength obtainable with electrostatic flocking. The degree of increase depends on the relative humidity of the flocking operation. The technique can be applied to all conductive nylon and acrylic non-crimped fibres, with the diameter of the conductive fibres being greater or lesser than the untreated fibres. The anti-static properties of the resultant carpet are permanent and do not affect carpet wear, cleaning or soiling properties.
Various modifications may be made without departing from the invention. For example the length of the fibres may be other than that described and the conduc¬ tive fibre length may differ from the untreated fibre length. Also the percentage by weight of the conductive fibres in the blend need not be restricted to that described and the flocking conditions may vary if necessary .

Claims

Claims :
1. A flocked material characterised by a blend of fibres (12) having electrical conductive properties and non conductive fibres, the blended fibres (12) being located on an adhesive coated base (16,18), whereby the material has desired anti-static properties.
2. A material according to claim 1, characterised in that the blended fibres (12) comprise 1 % by weight of the conductive fibres.
3. A material according to claim 1 or 2, characterised in that the base comprises a glass fibre scrim (16) backed with foam plastics (18).
4. A method of manufacturing a flocked material, characterised by providing fibres having electrical conductive properties, blending the conductive fibres with non-conductive fibres and electrostatically flock¬ ing the blended fibres (12) on to an adhesive coated base (16,18), whereby the conductive fibres produce a material with desired anti-static properties.
5. A method according to claim 4, characterised in that the conductive fibres are cut to a desired length independently of cutting of the non-conductive fibres to a desired length.
6. A method according to claim 4 or 5, characterised in that the conductive fibres are blended with the non-conductive fibres at a stage where the fibres are treated in an aqueous mixture to be provided with properties required for electrostatic flocking.
7. A method according to claim 6, characterised in that the blending is carried out where the fibres are treated in an aqueous mixture of common salt and a quaternary cationic finish.
8. A method according to any of claims 4 to 7, characterised in that the non-conductive fibres are pre-dyed prior to blending.
9. A method according to any of the preceding claims, characterised in that the blended fibres are flocked in conditions of between 40 and 60 % relative humidity and in a temperature range of 18 to 21°C.
10. A method according to any of the preceding claims, characterised in that the blended fibres comprise 1 ?ό by weight of the conductive fibres.
PCT/GB1987/000004 1985-06-18 1987-01-08 Anti-static flocked material WO1988005091A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB08614846A GB2177025B (en) 1985-06-18 1986-06-18 Anti-static flocked material
PCT/GB1987/000004 WO1988005091A1 (en) 1987-01-08 1987-01-08 Anti-static flocked material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/GB1987/000004 WO1988005091A1 (en) 1987-01-08 1987-01-08 Anti-static flocked material

Publications (1)

Publication Number Publication Date
WO1988005091A1 true WO1988005091A1 (en) 1988-07-14

Family

ID=10610202

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1987/000004 WO1988005091A1 (en) 1985-06-18 1987-01-08 Anti-static flocked material

Country Status (1)

Country Link
WO (1) WO1988005091A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004006736A1 (en) * 2002-07-17 2004-01-22 Bonar Floors Limited Surface covering

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1320215A (en) * 1969-09-29 1973-06-13 Brunswick Corp Metal flocking

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1320215A (en) * 1969-09-29 1973-06-13 Brunswick Corp Metal flocking

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004006736A1 (en) * 2002-07-17 2004-01-22 Bonar Floors Limited Surface covering

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