EP1988811A1 - Wear indicator for a flocked scouring material - Google Patents

Wear indicator for a flocked scouring material

Info

Publication number
EP1988811A1
EP1988811A1 EP07750700A EP07750700A EP1988811A1 EP 1988811 A1 EP1988811 A1 EP 1988811A1 EP 07750700 A EP07750700 A EP 07750700A EP 07750700 A EP07750700 A EP 07750700A EP 1988811 A1 EP1988811 A1 EP 1988811A1
Authority
EP
European Patent Office
Prior art keywords
adhesive
fibres
scouring
substrate
flock
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP07750700A
Other languages
German (de)
French (fr)
Other versions
EP1988811B1 (en
EP1988811A4 (en
Inventor
Carmen Martin Rivera
Stephane Thioliere
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Innovative Properties Co
Original Assignee
3M Innovative Properties Co
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
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Application filed by 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Publication of EP1988811A1 publication Critical patent/EP1988811A1/en
Publication of EP1988811A4 publication Critical patent/EP1988811A4/en
Application granted granted Critical
Publication of EP1988811B1 publication Critical patent/EP1988811B1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L25/00—Domestic cleaning devices not provided for in other groups of this subclass 
    • A47L25/08—Pads or the like for cleaning clothes
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L13/10—Scrubbing; Scouring; Cleaning; Polishing
    • A47L13/16—Cloths; Pads; Sponges

Definitions

  • the present invention relates to flocked materials that are suitable for consumer use as scouring materials for cleaning surfaces in various environments, including domestic, industrial, hospital and food industry environments.
  • Scouring materials that provide a scouring action are widely used for cleaning in the domestic environment, being most frequently employed for cleaning cooking utensils and for cleaning surfaces in kitchens and bathrooms. Scouring materials that are already known for such uses include resin-bonded non-woven webs of the type described in US-A-2 958
  • Those webs may incorporate abrasive particles to enhance their abrasive action.
  • a layer of adhesive is applied to a substrate web material and, while the adhesive is still tacky, flock fibres are attracted to it electrostatically so that they become embedded at one end in the adhesive and stand up generally perpendicular to the substrate material.
  • the material is then heated in an oven to dry and cure the adhesive layer.
  • WO 2004/021855 describes products, comprising flocked materials, that are intended to meet the growing demand from consumers for cleaning articles that (i) have a softer abrasive action but which, nevertheless, are able to remove material such as dirt, grease, burnt-on food etc. quickly and thoroughly; and (ii) are themselves easy to clean (for example, simply by rinsing after use) and retain no undesirable odours and no undesirable residues (e.g. pieces of food) that could subsequently contaminate other surfaces on which they might be used.
  • a cleaning article is replaced on time, before it becomes ineffective.
  • wear indicators have been proposed to provide the user with an indication that the article is nearing the end of its useful life.
  • WO 2001/047403 describes how an anti-microbial formulation is applied to a sanitizing wipe in combination with an indicator that changes colour when the formulation is exhausted
  • WO 2005/072594 describes a wipe that is provided with an active graphic to indicate to the user when the wipe should be discarded.
  • Wear indicators are also, known outside the field of domestic cleaning articles: US-A-6 895 631, for example, describes a buffing pad comprising a mixture of long fibres of one colour and short fibres of another colour, in which the short fibres only become apparent when the long fibres have been destroyed, indicating that the pad should be replaced.
  • the present invention is directed specifically to flocked scouring materials, and is concerned with the problem of providing a user of such a material with an indication that it is approaching the end of its useful life.
  • the present invention provides a scouring material comprising upstanding flock fibres secured to a substrate web material by an adhesive, the colours of the fibres and adhesive being such that the apparent colour of a flocked area of the substrate changes as the flock fibres in that area wear away.
  • the fibres and the adhesive may be of differing colours whereby the colour of the adhesive becomes visible as the fibres wear away.
  • the colour of the adhesive contrasts with that of the substrate material.
  • Fig. 1 is a diagrammatic cross-section of a piece of flocked scouring material
  • Fig. 2 is a plan view of a piece of patterned flocked scouring material
  • Fig. 3 is a diagrammatic cross-section of a hand pad incorporating a flocked scouring material
  • Fig. 4 is a perspective view of the hand pad of Fig. 3.
  • the flocked scouring material 1 shown in cross-section in Fig. 1 comprises flock fibres 3 arranged substantially perpendicular to a substrate web material 5, and secured to the substrate material by a layer of adhesive 7.
  • flocked materials of the general type shown in Fig. 1, and processes for manufacturing them are well known.
  • a layer of adhesive 7 is applied to the substrate material 5 and, while the adhesive is still tacky, flock fibres 3 are attracted to it electrostatically so that they become embedded at one end in the adhesive and stand up generally perpendicular to the substrate material.
  • the material is then heated in an oven to dry and cure the adhesive layer. If desired, flock fibres can be applied to the other side of the substrate material 5 in the same manner.
  • the flock fibres 3 may be applied evenly over the substrate material 5 or may be applied so that they form a pattern over the surface of the substrate material.
  • a process by which a pattern of flock fibres can be achieved is well-known and involves applying the adhesive 7 to the substrate material 5 in the required pattern, usually by some form of printing process, with the result that the flock fibres 3 will be adhered to the substrate only in the areas to which the adhesive has been applied.
  • Fig. 2 shows a pattern that is achieved by applying the adhesive 7 to regularly-spaced rectangular patches 11 of the substrate material 5. In this case, the flock fibres 3 will adhere to the substrate material 5 in those patches, while the substrate material 5 will remain exposed elsewhere.
  • the size of the patches 11 can be altered to change the area of the substrate material 5 that is covered by the flock 3, and the shape of the patches 11 can also be changed.
  • the flocked surface can be used to scour a surface i.e. to exert an abrasive action on the surface to remove dirt that cannot be removed just by wiping the surface.
  • Cleaning articles can be formed by cutting a flocked scouring material as described above into pieces, the size of which will depend on the intended use of the articles. For use by hand in the domestic environment, a suitable size could be about 30cm by 30cm.
  • An alternative type of scouring article can be formed by laminating the flocked scouring material to another material that may simply provide a support for the scouring material or may provide an alternative cleaning action.
  • Figs. 3 and 4 shows a cleaning article 12 that is formed by laminating flocked scouring material 1 as described above to another material, in this case a layer of foam 9, to form a hand pad.
  • the foam 9 can be of any type known to be suitable for domestic cleaning, including cellulosic foams having a density in the range of from 75 to
  • the foam 9 can be of any suitable thickness but it has been found that thicknesses in the range of from 0.5 to 5.0 cm are particularly useful for domestic cleaning.
  • the laminate can be cut into hand pads having a larger surface area (e.g. having dimensions of up to 20 cm by 20 cm).
  • a thicker layer of foam may be more suitable for pads having a smaller surface area (e.g. dimensions of about 7 cm by 9 cm).
  • the flock 3 could be applied continuously over the substrate material 5 of the scouring material 1, instead of being applied in a pattern as shown in Fig. 4.
  • Scouring materials and scouring articles as described above with reference to Figs. 1 to 4 are also described in WO 2004/021855.
  • the scouring material and/or any other material to which it is laminated may, if required, be impregnated with a cleaning composition.
  • the adhesive 7 and the flock fibres 3 have different colours so that, as the fibres wear away, the colour of the adhesive becomes increasingly visible until it dominates and provides an indication to the user that the scouring action of the material or article has diminished.
  • the colours selected for the adhesive and the fibres should be such that the change in appearance of the scouring material/article is clearly visible. Suitable colour combinations will be described below.
  • Any woven or non- woven flexible material suitable for cleaning surfaces i.e. able to withstand, at least, hot water and cleaning fluids
  • the substrate material 5 may be a disposable, semi-disposable or reusable textile wipe material, in which case the flock fibres 3 are applied to the substrate so that a part of the surface of the substrate (for example, one side thereof) remains exposed and can be used to provide a wiping action as well as a scouring action to a surface that is being cleaned.
  • the textile wipe material may be of woven, knitted or non-woven construction and will typically have a basis weight in the range of from 15 to 300 g/m 2 , although materials having a higher basis weight could be used.
  • Suitable non-woven wipe materials for the substrate material 5 include dry-laid, wet-laid, spun-bond and spun lace materials and may, as appropriate, be thermally- bonded, resin-bonded, ultrasonically-bonded, needle-punched, hydro-entangled, latex- coated etc.
  • the textile wipe material may comprise natural fibres (for example cotton fibres) and/or man-made fibres (for example PET, rayon, viscose, polypropylene, polyamide, or polyester fibres). Any of the previously-mentioned substrate materials may also be used when the flocked scouring material is to be laminated to another material.
  • the flock fibres for example cotton fibres
  • man-made fibres for example PET, rayon, viscose, polypropylene, polyamide, or polyester fibres
  • any fibres known to be suitable for flocking and also suitable for cleaning can be used for the flock fibres 3, provided that they are available in a suitable colour having regard to the colour selected for the adhesive (see below).
  • a particularly suitable material is polyamide, especially in the form of nylon 6 or nylon 6.6, but polypropylene or polyester fibres could also be used.
  • the fibres should have a titre (mass per unit length) and length appropriate to the type of cleaning operation in which the flocked substrate will be used, in particular the aggressiveness of the scouring action required and the nature of the surface to be cleaned.
  • the amount of flock fibres 3 deposited on the substrate material 5 should be sufficient to obscure the adhesive 7 and should also be selected having regard to the scouring action that the substrate 1 is required to provide.
  • WO 2004/021855 describes scouring substrates in which flock fibres having a length in the range of from 0.4 to 0.8 mm and a titre in the range of from 15 to 80 dtex are applied to a substrate material in an amount of from 150 to 180 g/m 2 .
  • Abrasive particles may be applied to the flock fibres 3, if required to enhance the scouring action.
  • the abrasive particles may comprise an abrasive mineral that is adhered to the fibres 3 by a resin, or they may simply comprise beads of resin without abrasive mineral.
  • the fibres 3 themselves may provide the required scouring action.
  • the adhesive 7 selected to bind the flock fibres 3 to the substrate material 5 should also be suitable for use in the conditions for which the wipe is intended (for example, able to withstand hot water and cleaning fluids). Preferably, it should not adversely affect the flexibility of the substrate material 5. Suitable adhesives are acrylic adhesives and PVC (polyvinylchloride) resins, and are applied in an amount that will yield a very thin layer on the substrate material. A typical coating weight for the adhesive is about 90 to 140 g/m 2 .
  • the adhesive 7 and the flock fibres 3 have different colours so that, as the fibres wear away, the colour of the adhesive becomes increasingly visible until it dominates.
  • This colour change in the flocked areas of the material 1 indicates, to the user, that the scouring action of the material is disappearing.
  • the pink colour is reference no. 238 or 239 on the PANTONE MATCHING SYSTEM ® ; the turquoise colour is reference no. 312, 313 or 3135 on the PANTONE MATCHING
  • the adhesive 7 should be coloured so that it is visible against the substrate material 1, that is not essential.
  • a transparent adhesive 7 in combination with flock fibres 3 that are of a contrasting colour to the substrate material 1 : in that case, as the flock fibres wear away, it is the colour of the underlying substrate material 1 (rather than the colour of the adhesive 7) that becomes apparent in the flocked areas.
  • Example 1 - a hand pad comprising a flocked substrate material laminated to a layer of foam.
  • the flock fibres were polyamide fibres of a turquoise colour (see above) having a length of 0.8 mm and a titre of 44 dtex; the flocking adhesive was an acrylic adhesive of a red colour (see above), and the substrate material was a light green, coated non-woven material comprising 35% polyester and 65% cotton having a basis weight of 105 g/m 2 .
  • the flock fibres were applied to one surface of the substrate material in shaped, spaced areas forming a repeating pattern that covered approximately 50% of the surface of the substrate material.
  • the substrate material was laminated, on its un-flocked side, to a layer of cellulosic sponge having a thickness of 2 cm and a density (when dry) of about 29 kg/m 3 .
  • the hand pad was subjected to normal domestic use during which it was observed that the red colour of the adhesive in the flocked areas became increasingly apparent as the turquoise flock fibres wore away.
  • Example 2 - a hand pad comprising a flocked substrate material laminated to a sponge cloth material.
  • the flocked substrate material was the same as that of Example 1 above.
  • the substrate material was laminated, on its un-flocked side, to a sponge cloth material having a thickness of 2.5 mm and a basis weight (when dry) of about 260 g/m 2 .
  • Example 3 a wipe comprising a flocked substrate material
  • the flock fibres were polyamide fibres of a dark blue colour having a length of 0.8 mm and a titre of 44 dtex; the flocking adhesive was an an acrylic-styrene resin of a red colour (see above), and the substrate material was a blue reusable non-woven wipe material, specifically a viscose-polyester latex coated wipe formed by the process of carding, crosslapping and needletacking and having a basis weight of about 120 g/m 2 .
  • the flock fibres were applied to the substrate material in shaped, spaced areas forming a repeating pattern that covered approximately 15% of the surface of the substrate material.
  • the wipe was subjected to normal domestic use during which it was observed that the red colour of the adhesive in the flocked areas became increasingly apparent as the blue flock fibres wore away.

Landscapes

  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Detergent Compositions (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

A scouring material is disclosed that comprises upstanding flock fibres secured to a substrate web material by an adhesive. The colours of the fibres and adhesive being such that the apparent colour of a flocked area of the substrate changes as the flock fibres in that area wear away.

Description

WEAR INDICATOR FOR A FLOCKED SCOURING MATERIAL
The present invention relates to flocked materials that are suitable for consumer use as scouring materials for cleaning surfaces in various environments, including domestic, industrial, hospital and food industry environments.
Materials that provide a scouring action are widely used for cleaning in the domestic environment, being most frequently employed for cleaning cooking utensils and for cleaning surfaces in kitchens and bathrooms. Scouring materials that are already known for such uses include resin-bonded non-woven webs of the type described in US-A-2 958
593. Those webs may incorporate abrasive particles to enhance their abrasive action.
It has also been proposed, in GB-A-I 539 477 and WO 02/06009, to use flocked materials for domestic cleaning and to enhance the abrasive action of the materials by depositing abrasive particles (in the form of beads of resin) on the free ends of the flock fibres. Alternative products, comprising pile fabrics, which are intended to provide an enhanced abrasive action in combination with a wiping action are described in EP-A-O 632 990. Flocked materials, and processes for manufacturing them, are well known. In the conventional processes, a layer of adhesive is applied to a substrate web material and, while the adhesive is still tacky, flock fibres are attracted to it electrostatically so that they become embedded at one end in the adhesive and stand up generally perpendicular to the substrate material. The material is then heated in an oven to dry and cure the adhesive layer.
WO 2004/021855 describes products, comprising flocked materials, that are intended to meet the growing demand from consumers for cleaning articles that (i) have a softer abrasive action but which, nevertheless, are able to remove material such as dirt, grease, burnt-on food etc. quickly and thoroughly; and (ii) are themselves easy to clean (for example, simply by rinsing after use) and retain no undesirable odours and no undesirable residues (e.g. pieces of food) that could subsequently contaminate other surfaces on which they might be used. For environmental and cost reasons, consumers wish to obtain the maximum life from cleaning articles. On the other hand, they also wish to ensure that a cleaning article is replaced on time, before it becomes ineffective. To that end, for certain cleaning articles, wear indicators have been proposed to provide the user with an indication that the article is nearing the end of its useful life. In the field of wipes, for example, WO 2001/047403 describes how an anti-microbial formulation is applied to a sanitizing wipe in combination with an indicator that changes colour when the formulation is exhausted, and WO 2005/072594 describes a wipe that is provided with an active graphic to indicate to the user when the wipe should be discarded. Wear indicators are also, known outside the field of domestic cleaning articles: US-A-6 895 631, for example, describes a buffing pad comprising a mixture of long fibres of one colour and short fibres of another colour, in which the short fibres only become apparent when the long fibres have been destroyed, indicating that the pad should be replaced.
The present invention is directed specifically to flocked scouring materials, and is concerned with the problem of providing a user of such a material with an indication that it is approaching the end of its useful life.
The present invention provides a scouring material comprising upstanding flock fibres secured to a substrate web material by an adhesive, the colours of the fibres and adhesive being such that the apparent colour of a flocked area of the substrate changes as the flock fibres in that area wear away.
The fibres and the adhesive may be of differing colours whereby the colour of the adhesive becomes visible as the fibres wear away. Advantageously, the colour of the adhesive contrasts with that of the substrate material.
By way of example, scouring materials in accordance with the invention will be described with reference to the accompanying drawings, in which: Fig. 1 is a diagrammatic cross-section of a piece of flocked scouring material;
Fig. 2 is a plan view of a piece of patterned flocked scouring material; Fig. 3 is a diagrammatic cross-section of a hand pad incorporating a flocked scouring material; and
Fig. 4 is a perspective view of the hand pad of Fig. 3.
The flocked scouring material 1 shown in cross-section in Fig. 1 comprises flock fibres 3 arranged substantially perpendicular to a substrate web material 5, and secured to the substrate material by a layer of adhesive 7.
As already indicated above, flocked materials of the general type shown in Fig. 1, and processes for manufacturing them, are well known. In the conventional processes, a layer of adhesive 7 is applied to the substrate material 5 and, while the adhesive is still tacky, flock fibres 3 are attracted to it electrostatically so that they become embedded at one end in the adhesive and stand up generally perpendicular to the substrate material. The material is then heated in an oven to dry and cure the adhesive layer. If desired, flock fibres can be applied to the other side of the substrate material 5 in the same manner.
The flock fibres 3 may be applied evenly over the substrate material 5 or may be applied so that they form a pattern over the surface of the substrate material. A process by which a pattern of flock fibres can be achieved is well-known and involves applying the adhesive 7 to the substrate material 5 in the required pattern, usually by some form of printing process, with the result that the flock fibres 3 will be adhered to the substrate only in the areas to which the adhesive has been applied. Fig. 2, for example, shows a pattern that is achieved by applying the adhesive 7 to regularly-spaced rectangular patches 11 of the substrate material 5. In this case, the flock fibres 3 will adhere to the substrate material 5 in those patches, while the substrate material 5 will remain exposed elsewhere. The size of the patches 11 can be altered to change the area of the substrate material 5 that is covered by the flock 3, and the shape of the patches 11 can also be changed. Through a suitable choice of the substrate material 5 and the flock fibres 3, the flocked surface can be used to scour a surface i.e. to exert an abrasive action on the surface to remove dirt that cannot be removed just by wiping the surface.
Cleaning articles can be formed by cutting a flocked scouring material as described above into pieces, the size of which will depend on the intended use of the articles. For use by hand in the domestic environment, a suitable size could be about 30cm by 30cm. An alternative type of scouring article can be formed by laminating the flocked scouring material to another material that may simply provide a support for the scouring material or may provide an alternative cleaning action.
Figs. 3 and 4, for example, shows a cleaning article 12 that is formed by laminating flocked scouring material 1 as described above to another material, in this case a layer of foam 9, to form a hand pad. The foam 9 can be of any type known to be suitable for domestic cleaning, including cellulosic foams having a density in the range of from 75 to
125 Kg/m3 and polyurethane foams having a density in the range of from 18 to 30 Kg/m3. The foam 9 can be of any suitable thickness but it has been found that thicknesses in the range of from 0.5 to 5.0 cm are particularly useful for domestic cleaning. When a thinner layer of foam is used, the laminate can be cut into hand pads having a larger surface area (e.g. having dimensions of up to 20 cm by 20 cm). A thicker layer of foam may be more suitable for pads having a smaller surface area (e.g. dimensions of about 7 cm by 9 cm). It will be appreciated that the flock 3 could be applied continuously over the substrate material 5 of the scouring material 1, instead of being applied in a pattern as shown in Fig. 4.
Scouring materials and scouring articles as described above with reference to Figs. 1 to 4 are also described in WO 2004/021855. The scouring material and/or any other material to which it is laminated may, if required, be impregnated with a cleaning composition.
In accordance with the present invention, the adhesive 7 and the flock fibres 3 have different colours so that, as the fibres wear away, the colour of the adhesive becomes increasingly visible until it dominates and provides an indication to the user that the scouring action of the material or article has diminished. The colours selected for the adhesive and the fibres should be such that the change in appearance of the scouring material/article is clearly visible. Suitable colour combinations will be described below.
The substrate material
Any woven or non- woven flexible material suitable for cleaning surfaces (i.e. able to withstand, at least, hot water and cleaning fluids) can be used for the substrate material 5 depending, among other factors, on whether or not the flocked material 1 is to be used on its own as a cleaning article or is to be laminated to another material, for example a sponge.
If the flocked material 1 is to be used on its own as a scouring article, it will typically be cut to a size of about 30cm by 30cm. The substrate material 5 may be a disposable, semi-disposable or reusable textile wipe material, in which case the flock fibres 3 are applied to the substrate so that a part of the surface of the substrate (for example, one side thereof) remains exposed and can be used to provide a wiping action as well as a scouring action to a surface that is being cleaned. The textile wipe material may be of woven, knitted or non-woven construction and will typically have a basis weight in the range of from 15 to 300 g/m2, although materials having a higher basis weight could be used. Suitable non-woven wipe materials for the substrate material 5 include dry-laid, wet-laid, spun-bond and spun lace materials and may, as appropriate, be thermally- bonded, resin-bonded, ultrasonically-bonded, needle-punched, hydro-entangled, latex- coated etc. The textile wipe material may comprise natural fibres (for example cotton fibres) and/or man-made fibres (for example PET, rayon, viscose, polypropylene, polyamide, or polyester fibres). Any of the previously-mentioned substrate materials may also be used when the flocked scouring material is to be laminated to another material. The flock fibres
Any fibres known to be suitable for flocking and also suitable for cleaning (i.e. able to withstand, at least, hot water and cleaning fluids) can be used for the flock fibres 3, provided that they are available in a suitable colour having regard to the colour selected for the adhesive (see below). A particularly suitable material is polyamide, especially in the form of nylon 6 or nylon 6.6, but polypropylene or polyester fibres could also be used. The fibres should have a titre (mass per unit length) and length appropriate to the type of cleaning operation in which the flocked substrate will be used, in particular the aggressiveness of the scouring action required and the nature of the surface to be cleaned.
The amount of flock fibres 3 deposited on the substrate material 5 should be sufficient to obscure the adhesive 7 and should also be selected having regard to the scouring action that the substrate 1 is required to provide. WO 2004/021855, for example, describes scouring substrates in which flock fibres having a length in the range of from 0.4 to 0.8 mm and a titre in the range of from 15 to 80 dtex are applied to a substrate material in an amount of from 150 to 180 g/m2.
Abrasive particles may be applied to the flock fibres 3, if required to enhance the scouring action. The abrasive particles may comprise an abrasive mineral that is adhered to the fibres 3 by a resin, or they may simply comprise beads of resin without abrasive mineral. Alternatively, as described in our WO 2004/021855, the fibres 3 themselves may provide the required scouring action.
The flocking adhesive
The adhesive 7 selected to bind the flock fibres 3 to the substrate material 5 should also be suitable for use in the conditions for which the wipe is intended (for example, able to withstand hot water and cleaning fluids). Preferably, it should not adversely affect the flexibility of the substrate material 5. Suitable adhesives are acrylic adhesives and PVC (polyvinylchloride) resins, and are applied in an amount that will yield a very thin layer on the substrate material. A typical coating weight for the adhesive is about 90 to 140 g/m2.
Colour selection for the flock fibres and the flock adhesive
As described above, the adhesive 7 and the flock fibres 3 have different colours so that, as the fibres wear away, the colour of the adhesive becomes increasingly visible until it dominates. This colour change in the flocked areas of the material 1 indicates, to the user, that the scouring action of the material is disappearing.
Examples of colour combinations for the adhesive 7 and the flock fibres 3 that have been found suitable for use on a light green substrate material 1 are:
(i) red adhesive and violet fibres
(ii) pink adhesive and turquoise fibres (iii) violet adhesive and orange (021C /165C) fibres where: the red colour is PANTONE® "Warm Red"; the violet colour is reference no. 2587, 265 or 266 on the PANTONE MATCHING
SYSTEM®; the pink colour is reference no. 238 or 239 on the PANTONE MATCHING SYSTEM®; the turquoise colour is reference no. 312, 313 or 3135 on the PANTONE MATCHING
SYSTEM®; and the orange colour is PANTONE® "Orange 021" or reference no. 165 on the PANTONE
MATCHING SYSTEM®.
It will be appreciated, however, that other colour combinations could be used and that the choice of colours will be influenced by the colour of the substrate material 1. In addition, although it is preferred that the adhesive 7 should be coloured so that it is visible against the substrate material 1, that is not essential. As an alternative, it is possible to use a transparent adhesive 7 in combination with flock fibres 3 that are of a contrasting colour to the substrate material 1 : in that case, as the flock fibres wear away, it is the colour of the underlying substrate material 1 (rather than the colour of the adhesive 7) that becomes apparent in the flocked areas.
Embodiments of the invention are described in greater detail in the following examples: Example 1 - a hand pad comprising a flocked substrate material laminated to a layer of foam.
The flock fibres were polyamide fibres of a turquoise colour (see above) having a length of 0.8 mm and a titre of 44 dtex; the flocking adhesive was an acrylic adhesive of a red colour (see above), and the substrate material was a light green, coated non-woven material comprising 35% polyester and 65% cotton having a basis weight of 105 g/m2.
The flock fibres were applied to one surface of the substrate material in shaped, spaced areas forming a repeating pattern that covered approximately 50% of the surface of the substrate material. The substrate material was laminated, on its un-flocked side, to a layer of cellulosic sponge having a thickness of 2 cm and a density (when dry) of about 29 kg/m3.
The hand pad was subjected to normal domestic use during which it was observed that the red colour of the adhesive in the flocked areas became increasingly apparent as the turquoise flock fibres wore away.
Example 2 - a hand pad comprising a flocked substrate material laminated to a sponge cloth material.
The flocked substrate material was the same as that of Example 1 above. The substrate material was laminated, on its un-flocked side, to a sponge cloth material having a thickness of 2.5 mm and a basis weight (when dry) of about 260 g/m2.
The hand pad was subjected to normal domestic use during which it was observed that the red colour of the adhesive in the flocked areas became increasingly apparent as the turquoise flock fibres wore away. Example 3 — a wipe comprising a flocked substrate material
The flock fibres were polyamide fibres of a dark blue colour having a length of 0.8 mm and a titre of 44 dtex; the flocking adhesive was an an acrylic-styrene resin of a red colour (see above), and the substrate material was a blue reusable non-woven wipe material, specifically a viscose-polyester latex coated wipe formed by the process of carding, crosslapping and needletacking and having a basis weight of about 120 g/m2. The flock fibres were applied to the substrate material in shaped, spaced areas forming a repeating pattern that covered approximately 15% of the surface of the substrate material.
The wipe was subjected to normal domestic use during which it was observed that the red colour of the adhesive in the flocked areas became increasingly apparent as the blue flock fibres wore away.

Claims

1. A scouring material comprising upstanding flock fibres secured to a substrate web material by an adhesive, the colours of the fibres and adhesive being such that the apparent colour of a flocked area of the substrate changes as the flock fibres in that area wear away.
2. A scouring material as claimed in claim 1, in which the fibres and the adhesive are of differing colours whereby the colour of the adhesive becomes visible as the fibres wear away.
3. A scouring material as claimed in claim 2, in which the colour of the adhesive contrasts with that of the substrate material.
4. A scouring material as claimed in any one of the preceding claims, in which the flock fibres are applied only to discrete areas of the substrate material, the surface of the substrate material being exposed between those discrete areas.
5. A scouring material as claimed in any one of the preceding claims, in which the flock fibres are formed of a polyamide material.
6. A scouring material as claimed in any one of the preceding claims, in which the flock fibres have a length in the range of from 0.4 to 0.8 mm.
7. A scouring material as claimed in any one of the preceding claims, in which the flock fibres have a titre in the range of from 15 to 80 dtex.
8. A scouring material as claimed in any one of the preceding claims, in which the flock fibres are applied to the substrate material in an amount sufficient to obscure the adhesive.
9. A scouring material as claimed in any one of the preceding claims, in which the adhesive is an acrylic adhesive or a PVC resin.
10. A scouring material as claimed in any one of the preceding claims, in which the substrate is a liquid-absorbent knitted, woven, or non-woven textile material.
11. A cleaning article comprising a piece of scouring material as claimed in any one of the preceding claims.
12. A cleaning article comprising a scouring material as claimed in any one of claims 1 to 10, laminated to a layer of foam, or a sponge cloth material, or a wipe material.
EP07750700A 2006-02-28 2007-02-14 Wear indicator for a flocked scouring material Not-in-force EP1988811B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0603875.6A GB0603875D0 (en) 2006-02-28 2006-02-28 Wear indicator for a flocked scouring material
PCT/US2007/003879 WO2007100497A1 (en) 2006-02-28 2007-02-14 Wear indicator for a flocked scouring material

Publications (3)

Publication Number Publication Date
EP1988811A1 true EP1988811A1 (en) 2008-11-12
EP1988811A4 EP1988811A4 (en) 2009-11-11
EP1988811B1 EP1988811B1 (en) 2010-09-08

Family

ID=36178828

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07750700A Not-in-force EP1988811B1 (en) 2006-02-28 2007-02-14 Wear indicator for a flocked scouring material

Country Status (8)

Country Link
US (1) US20090178223A1 (en)
EP (1) EP1988811B1 (en)
KR (1) KR101331275B1 (en)
AT (1) ATE480180T1 (en)
DE (1) DE602007009049D1 (en)
ES (1) ES2352162T3 (en)
GB (1) GB0603875D0 (en)
WO (1) WO2007100497A1 (en)

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US20090308309A1 (en) * 2008-06-13 2009-12-17 Mohamed Abdel Aziz Flocked applicator and method of making
DE102010054010B4 (en) * 2010-12-09 2014-03-06 Carl Freudenberg Kg mop
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ITMI20122209A1 (en) * 2012-12-20 2014-06-21 Orlandi Spa SPONGES KIT FOR CLEANING GLASS SURFACES
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Also Published As

Publication number Publication date
ATE480180T1 (en) 2010-09-15
EP1988811B1 (en) 2010-09-08
US20090178223A1 (en) 2009-07-16
WO2007100497A1 (en) 2007-09-07
KR101331275B1 (en) 2013-11-20
DE602007009049D1 (en) 2010-10-21
EP1988811A4 (en) 2009-11-11
GB0603875D0 (en) 2006-04-05
ES2352162T3 (en) 2011-02-16
KR20080104317A (en) 2008-12-02

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