EP3498426A1 - Dekoriertes schleifvlies - Google Patents

Dekoriertes schleifvlies Download PDF

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Publication number
EP3498426A1
EP3498426A1 EP17382858.3A EP17382858A EP3498426A1 EP 3498426 A1 EP3498426 A1 EP 3498426A1 EP 17382858 A EP17382858 A EP 17382858A EP 3498426 A1 EP3498426 A1 EP 3498426A1
Authority
EP
European Patent Office
Prior art keywords
abrasive
protective layer
screen printing
medium
formulation
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
EP17382858.3A
Other languages
English (en)
French (fr)
Other versions
EP3498426B8 (de
EP3498426B1 (de
Inventor
TUR-DURANT Alexis
COUTINHO Jean-Luc
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.)
Mapa Spontex SNC
Original Assignee
Mapa Spontex Iberica SA
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
Application filed by Mapa Spontex Iberica SA filed Critical Mapa Spontex Iberica SA
Priority to EP17382858.3A priority Critical patent/EP3498426B8/de
Priority to ES17382858T priority patent/ES2844924T3/es
Publication of EP3498426A1 publication Critical patent/EP3498426A1/de
Application granted granted Critical
Publication of EP3498426B1 publication Critical patent/EP3498426B1/de
Publication of EP3498426B8 publication Critical patent/EP3498426B8/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/001—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as supporting member
    • B24D3/002—Flexible supporting members, e.g. paper, woven, plastic materials
    • B24D3/004—Flexible supporting members, e.g. paper, woven, plastic materials with special coatings
    • 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
    • A47L17/00—Apparatus or implements used in manual washing or cleaning of crockery, table-ware, cooking-ware or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B24D11/04—Zonally-graded surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
    • B24D15/04—Hand tools or other devices for non-rotary grinding, polishing, or stropping resilient; with resiliently-mounted operative surface

Definitions

  • the present disclosure relates to a high performance decorated abrasive web, as well as a handset including such an abrasive web and a method of making such an abrasive web.
  • the abrasive webs market as well as the combination of a sponge and an abrasive cleanser, being very competitive, it has become essential to stand out from the competition both in terms of quality, by offering abrasive webs both effective and sustainable, but also in terms of marketing, offering attractive visuals.
  • decorated abrasive webs have been proposed wherein a multi-color pattern is set up on the surface of the abrasive web.
  • this decoration is deposited on the surface of the abrasive sheet by thermal transfer of a decorated film.
  • the present disclosure relates to an abrasive web, comprising an abrasive carrier and a protective layer having a pattern comprising at least two different colors, wherein the protective layer is deposited on the abrasive carrier by screen printing and covers at least 80% of an surface of the abrasive medium.
  • the deposition of the protective layer can be carried out at room temperature, which avoids subjecting the abrasive medium to high temperatures and thus allows to maintain a high abrasive quality and good flexibility.
  • the screen printing does not require excessive and prolonged compression of the abrasive medium and therefore does not affect, or virtually no, the thickness of the latter.
  • the abrasive medium retains sufficient flexibility after the deposition of the protective layer to substantially recover its initial thickness.
  • the use of screen printing offers significant freedom in the composition of the protective layer, which allows in particular to introduce compounds to protect the abrasive medium, and therefore to increase its durability, in particular by reducing pilling. .
  • the thickness of the protective layer can also be easily adjusted to adjust the protection of the abrasive medium.
  • screen printing also offers great freedom in the design of the pattern, the latter can include any number of different colors: it suffices to use as many successive screen printing frames as colors present in the pattern.
  • the protective layer covers at least 80% of the surface of the abrasive web, it effectively protects the abrasive medium, which increases the durability of the latter.
  • the pattern chosen may be sufficiently wide or repeated to substantially cover the abrasive medium and / or the pattern may include a solid bottom, possibly of the same color as the abrasive medium, to protect the abrasive medium including between the colorful ornaments of the pattern.
  • the pattern does not play a simple role of decoration, it also protects the entire abrasive medium, which allows to maintain the effectiveness of the abrasive sheet longer.
  • the abrasive carrier comprises textile fibers.
  • the textile fibers form a nonwoven.
  • a nonwoven provides support for abrasive loads while maintaining flexibility.
  • the textile fibers comprise at least fibers of one or more materials, artificial or natural, including: polyester; polyamide; viscose; aramid; polypropylene; sisal; cotton.
  • the abrasive medium comprises abrasive fillers. These abrasive fillers make it possible to scrape on the surface to be cleaned in order to unclog the dirt present.
  • the abrasive fillers of the abrasive carrier have a hardness of between 3.5 and 9.5, preferably between 8.5 and 9.5, on the Mohs scale. Such hardnesses are particularly suitable for scouring difficult stains on resistant materials such as stainless steel, glass or cast iron.
  • the abrasive fillers of the abrasive carrier are mineral particles.
  • the abrasive fillers of the abrasive carrier comprise at least one or more of the following materials: plastic (including melamine or PVC), pumice, silica, corundum, silicon carbide.
  • plastic including melamine or PVC
  • pumice pumice
  • silica silica
  • corundum silicon carbide.
  • the majority is used corundum and / or silicon carbide.
  • the abrasive carrier comprises a binder.
  • the binder makes it possible to bond the abrasive fillers with the textile fibers of the abrasive medium.
  • the binder of the abrasive carrier comprises at least one thermoplastic or thermosetting polymer.
  • the binder of the abrasive carrier comprises at least one or more thermoplastic or thermosetting materials, including: acrylic; polyurethane; acrylonitrile; styrene-butadiene; acrylic styrene; acrylic vinyl; phenolic resin; urea resin; melamine formaldehyde
  • the abrasive support has a thickness of between 6 and 10 mm, preferably between 7 and 9 mm.
  • the abrasive support has a surface density of between 500 and 900 g / m 2 , preferably between 600 and 800 g / m 2 .
  • the protective layer comprises at least one polymeric binder, preferably of the elastomer and / or thermoplastic type.
  • This polymeric binder makes it possible, on the one hand, to bind the fibers of the abrasive support on the surface, which increases the cohesion of the fibers and therefore the durability of the abrasive sheet, and on the other hand to provide a support for the pigments which ensure the color of the protective layer.
  • the polymeric binder of the protective layer comprises at least one styrenic polymer, such as acrylonitrile, styrene-butadiene or acrylic styrene, or a urethane polymer such as polyurethane.
  • styrenic polymer such as acrylonitrile, styrene-butadiene or acrylic styrene
  • urethane polymer such as polyurethane.
  • the protective layer comprises at least one pigment. This pigment colors the protective layer. In particular, different areas of the protective layer may contain different pigments and therefore have different colors, which helps to form the pattern of the protective layer.
  • the protective layer comprises at least one thickener.
  • a thickener makes it possible to adjust the flexibility of the protective layer.
  • the thickener of the protective layer comprises at least one or more materials among the following: sodium polyacrylate; polyurethane; cellulose.
  • the protective layer covers at least 99% of a surface of the abrasive medium.
  • the protective layer has a surface density of between 30 and 320 g / m 2 , preferably between 200 and 300 g / m 2 . This ensures a compromise between a basis weight sufficient to effectively bind the fibers on the surface of the abrasive medium and thus enhance the durability of the abrasive sheet, and a grammage not too important to preserve the saliency of the abrasive fillers and therefore the abrasive quality of the tablecloth abrasive.
  • the protective layer has a thickness of less than 1 mm, preferably less than 0.5 mm. This ensures a compromise between a sufficient thickness to effectively bind the fibers to the surface of the abrasive medium and thus enhance the durability of the abrasive sheet, and a thickness not too important to preserve the saliency of the abrasive fillers and therefore the abrasive quality of the tablecloth abrasive.
  • the pattern of the protective layer comprises at least three different colors.
  • it may be any motive, not necessarily continuous in a given direction.
  • the abrasive web comprises a Branca abrasiveness greater than 600 mg / 1000 cycles, preferably greater than 700 mg / 1000 cycles.
  • a protocol for measuring Branca abrasiveness is given later in the description.
  • the present disclosure also relates to a cleaning handset, comprising a sponge and abrasive web according to any one of the preceding embodiments attached to a surface of the sponge.
  • the present disclosure also relates to a method of manufacturing an abrasive sheet, comprising the following steps: providing an abrasive support; depositing a protective layer on the abrasive medium by screen printing using at least two successive screen printing frames so as to produce a pattern comprising at least two different colors, the protective layer covering at least 80% of a surface of the abrasive medium.
  • the abrasive support thus provided may comprise any number of characteristics among those set forth above.
  • the screen printing frames used during the deposition of the protective layer are rotary screen printing frames. These allow a faster execution speed and can be installed in series on a continuous production line. However, screen printing frames are also possible.
  • At least one, and preferably each, screen printing frame has a mesh of between 50 and 650 ⁇ m, preferably between 100 and 200 ⁇ m. Such a mesh provides a satisfactory pattern resolution while ensuring a passage section sufficient for the screen printing formulation.
  • At least one, and preferably each, screen printing formulation used in the deposition of the protective layer comprises a polymeric binder, preferably of the elastomer and / or thermoplastic type.
  • this polymeric binder makes it possible to bond the fibers of the abrasive support to the surface, which increases the cohesion of the fibers and therefore the durability of the abrasive sheet.
  • the polymeric binder of at least one screen printing formulation comprises at least one styrenic polymer, such as acrylonitrile, styrene-butadiene or acrylic styrene, or a urethane polymer such as polyurethane.
  • styrenic polymer such as acrylonitrile, styrene-butadiene or acrylic styrene
  • a urethane polymer such as polyurethane.
  • the mass concentration of the polymeric binder in at least one screen printing formulation is from 65 to 85%, preferably from 70 to 80%. Such concentration facilitates the deposition of the protective layer.
  • At least one, and preferably each, screen printing formulation used in the deposition of the protective layer comprises a solvent, preferably water.
  • the mass concentration of the solvent in at least one screen printing formulation is between 10 and 90%, preferably between 10 and 50%, more preferably between 15 and 20%.
  • concentration of the solvent affects the viscosity of the screen printing formulation and thus the amount of formulation deposited.
  • At least one, and preferably each, screen printing formulation used in the deposition of the protective layer comprises a pigment paste.
  • This pigment paste makes it possible to color the screen printing formulation and thus to color the area of the protective layer concerned.
  • each screen printing formulation used with the various screen printing frames may contain a different pigment paste so that different areas of the protective layer have different colors, which helps to form the pattern of the protective layer.
  • the mass concentration of the pigment paste in at least one screen printing formulation is between 1 and 5%, preferably between 2 and 4%.
  • At least one, and preferably each, screen printing formulation used in the deposition of the protective layer comprises a thickener.
  • a thickener makes it possible to adjust the viscosity of the screen printing formulation, so as to adjust the amount of formulation deposited and the definition of the patterns. It also makes it possible to adjust the flexibility of the protective layer.
  • the thickener of at least one screen printing formulation comprises at least one or more of the following materials: sodium polyacrylate; polyurethane; cellulose.
  • the mass concentration of the thickener in at least one screen printing formulation is between 1 and 5%, preferably between 2 and 4%.
  • the viscosity of at least one, and preferably each, screen printing formulation is from 2000 to 16,000 mPa.s, preferably from 3,000 to 5,000 mPa.s.
  • the protective layer has, at the end of the deposition step, a surface density of between 30 and 320 g / m 2 , preferably between 200 and 300 g / m 2 .
  • the protective layer is deposited on at least 50% and preferably 100% of a surface of the abrasive medium.
  • the protective layer can decorate but also protect the entire surface of the abrasive medium.
  • the method comprises, after the step of depositing the protective layer, a step of crosslinking the protective layer.
  • a crosslinking step makes it possible to activate the crosslinking of the polymeric binder and thus to solidify the protective layer.
  • the crosslinking step comprises a heating step at a temperature of between 100 ° C. and 180 ° C., preferably between 140 ° C. and 160 ° C., for a duration of between 1 and 10 minutes. preferably between 3 and 8 minutes.
  • the crosslinking could be triggered in other ways, for example using radiation, including UV, IR or microwave radiation.
  • the deposition of the protective layer comprises the use of at least three screen printing frames.
  • the final protective layer has a thickness of less than 1 mm, preferably less than 0.5 mm. This ensures a compromise between a sufficient thickness to effectively bind the fibers on the surface of the abrasive medium and thus enhance the durability of the abrasive sheet, and a thickness not too important to preserve the mobility of the abrasive fillers and therefore the abrasive quality of the sheet. abrasive.
  • the abrasive web is never exposed to a temperature greater than 200 ° C. This reduces the risk of damaging the abrasive medium by thermal degradation.
  • FIG 1 represents, in perspective, a cleaning handset 1 according to the invention. This same cleaning handset 1 is also shown in section on the FIG 2 .
  • This cleaning unit 1 comprises an abrasive sheet 2 mounted on the upper face of a sponge 3.
  • the sponge 3 can be of any known type.
  • the abrasive sheet 2 comprises, for its part, an abrasive support 10 and a protective layer 20 covering the entire upper surface of the abrasive support 10.
  • the abrasive support 10 is a nonwoven textile layer comprising in this example poyester and polyamide fibers; the abrasive support 10 further comprises abrasive fillers, in this case a mixture of corundum and silicon carbide at a height of 350 g / m 2 , and a binder, in this case a phenolic resin at a level of 150 g / m 2 , ensuring the cohesion of the abrasive fillers in the textile layer and adjusting the consistency of the abrasive medium 10.
  • abrasive fillers in this case a mixture of corundum and silicon carbide at a height of 350 g / m 2
  • a binder in this case a phenolic resin at a level of 150 g / m 2
  • this abrasive support 10 has a thickness of 8 mm and a surface density of 700 g / m 2 .
  • the protective layer 20 is for its part a polymeric coating comprising a thermoplastic polymer, in this case styrene-butadiene, pigments and a thickener, in this case sodium polyacrylate.
  • a thermoplastic polymer in this case styrene-butadiene, pigments and a thickener, in this case sodium polyacrylate.
  • the protective layer 20 is divided into several zones 20a, 20b, 20c comprising different pigments and therefore having different colors. These different zones 20a, 20b, 20c, of three different colors in the present example, are arranged so as to form a pattern in the protective layer 20, thus decorating the upper face of the cleaning handset 1.
  • the abrasive support 10 is thus provided in the form of plates or a continuous roll and placed at the entrance of the conveyor 51 of a screen printing machine 50.
  • This screen printing machine 50 is provided with a plurality of rotary frames 60a, 60b, 60c arranged in series along the conveyor 51; more particularly, it comprises at least as many rotating frames 60 as zones 20a, 20b, 20c of different colors in the protective layer 20 of the abrasive sheet 2 to be manufactured: thus, in the present example, the screen printing machine comprises three successive rotary frames 60a, 60b and 60c each for coating one of the zones 20a, 20b, 20c of the protective layer 20.
  • Each rotary frame 60a, 60b, 60c comprises a cylinder 61 perforated with multiple holes 62, organized in a regular network, and rotated synchronously with the conveyor 51.
  • each perforated cylinder 61 is coated with a mask 63, typically formed of a solidified resin, whose extent corresponds to the negative of the zone 20a, 20b, 20c of the protective layer 20 that this rotary frame 60a, 60b, 60c must coat: thus, as is visible on the FIG 4 , the mask 63 plugs some holes 62 of the cylinder 61 so as to pass the screen printing formulation in areas corresponding to the zone 20a, 20b, 20c of the protective layer 20 to be coated.
  • each cylinder 61 the holes 62 of each cylinder 61 are distributed in a hexagonal network whose mesh measures approximately 125 microns.
  • Each rotating frame 60a, 60b, 60c further comprises a blade 64 extending vertically from the hub 65 of the rotary frame 60a, 60b, 60c to the cylinder 61.
  • the hub 65 further comprises a fluid inlet 66 allowing the introduction of a screen printing formulation 67a, 67b, 67c into the interior of the cylinder 61, upstream of the blade 64, so as to form a retaining for the screen printing formulation 67a, 67b, 67c.
  • a metal bar 68 is present in the interior space of the cylinder 61, upstream of the blade 64 and therefore within the screen printing formulation retainer 67a, 67b, 67c.
  • an electromagnet 69 disposed opposite the cylinder 61, under the conveyor 51, makes it possible to adjust the plating force of the metal bar 68 against the inner wall of the cylinder 61.
  • composition of the screen printing formulation 67a, 67b, 67c is substantially the same for each screen printing frame 60a, 60b, 60c and differs only with respect to the nature and / or concentration of the pigment (s) used.
  • screen printing formulations having a viscosity of about 3400 mPa.s. are obtained.
  • each pigment paste is chosen so as to endow the screen printing formulation 67a, 67b, 67c considered with the desired color for the corresponding zone 20a, 20b, 20c of the protective layer 20.
  • the abrasive support 10 passes under the cylinders 61 of each rotary frame 20a, 20b, 20c successively.
  • the space left between the surface of the conveyor 51 and the rolls 61 can in particular be adjusted in order to compress more or less the abrasive support 10 during its passage: in the present example, this space is about 5 mm. Compression being rapid, of the order of about 1 second, the abrasive support 10 immediately resumes its initial thickness after passing under each cylinder 61.
  • the action of the metal bar 68 and the blade 64 then makes it possible to push part of the screen printing formulation present in the retainer 67 through the holes 62 of the cylinder 61 not obstructed by the mask 63 so as to deposit the screen printing formulation.
  • 67a, 67b, 67c only in the desired zone 20a, 20b, 20c of the protective layer 20. This operation is carried out at ambient temperature.
  • the weight of the log 68, the force of the electromagnet 69 and the running speed of the conveyor 51 make it possible to adjust the amount of screen printing formulation coated on the abrasive support 10 as well as the thickness of the protective layer 20.
  • these parameters are adjusted identically for all rotary frames 60a, 60b, 60c so as to obtain a protective layer 20 having a surface density of 220 g / m 2 (plus or minus 10%) after drying, leading to at a thickness of less than 1 mm.
  • an additional zone 20a, 20b, 20c of the protective layer 20 is deposited on the abrasive medium 10 until the latter is completely covered.
  • the conveyor then continues its way to a heating chamber 52 in which the abrasive sheet 2 is heated to about 150 ° C for 5 minutes in order to crosslink the polymer of the protective layer 20 and thus solidify the latter.
  • the abrasive sheet 2 is ready and can be cut and cut to the desired size: it can then be marketed as is or be mounted by laminating or flame on a sponge 3 in order to form the cleaning handset 1.
  • the abrasive web 2 according to the example described above was subjected to these two tests and obtained a result of 797 mg in the Branca abrasiveness test and a score of 0.5 in the pilling resistance test. which is much better than the known decorated abrasive tablecloths.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP17382858.3A 2017-12-18 2017-12-18 Dekoriertes schleifvlies Active EP3498426B8 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP17382858.3A EP3498426B8 (de) 2017-12-18 2017-12-18 Dekoriertes schleifvlies
ES17382858T ES2844924T3 (es) 2017-12-18 2017-12-18 Paño abrasivo decorado

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17382858.3A EP3498426B8 (de) 2017-12-18 2017-12-18 Dekoriertes schleifvlies

Publications (3)

Publication Number Publication Date
EP3498426A1 true EP3498426A1 (de) 2019-06-19
EP3498426B1 EP3498426B1 (de) 2020-10-28
EP3498426B8 EP3498426B8 (de) 2020-12-16

Family

ID=60888313

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17382858.3A Active EP3498426B8 (de) 2017-12-18 2017-12-18 Dekoriertes schleifvlies

Country Status (2)

Country Link
EP (1) EP3498426B8 (de)
ES (1) ES2844924T3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4098801A1 (de) * 2021-05-31 2022-12-07 Rembrandtin Coatings GmbH Verfahren zur herstellung mehrschichtiger markierungselemente zur kennzeichnung von horizontalen und vertikalen flächen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2919513A1 (fr) * 2007-07-31 2009-02-06 Arjowiggins Licensing Soc Par Procede de fabrication d'un support pour produit abrasif applique et support obtenu.
FR2956968A1 (fr) * 2010-03-08 2011-09-09 Eurvest Eponge abrasive et procede de fabrication d'une telle eponge abrasive
WO2016137706A1 (en) * 2015-02-27 2016-09-01 3M Innovative Properties Company Consumer scrubbing article with ceramic microparticles and method of making same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2919513A1 (fr) * 2007-07-31 2009-02-06 Arjowiggins Licensing Soc Par Procede de fabrication d'un support pour produit abrasif applique et support obtenu.
FR2956968A1 (fr) * 2010-03-08 2011-09-09 Eurvest Eponge abrasive et procede de fabrication d'une telle eponge abrasive
WO2016137706A1 (en) * 2015-02-27 2016-09-01 3M Innovative Properties Company Consumer scrubbing article with ceramic microparticles and method of making same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4098801A1 (de) * 2021-05-31 2022-12-07 Rembrandtin Coatings GmbH Verfahren zur herstellung mehrschichtiger markierungselemente zur kennzeichnung von horizontalen und vertikalen flächen
WO2022253792A1 (de) * 2021-05-31 2022-12-08 Rembrandtin Coatings Gmbh Verfahren zur herstellung mehrschichtiger markierungselemente zur kennzeichnung von horizontalen und vertikalen flächen

Also Published As

Publication number Publication date
EP3498426B8 (de) 2020-12-16
ES2844924T3 (es) 2021-07-23
EP3498426B1 (de) 2020-10-28

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