EP1750904A1 - Support en tissu de fibres melangees - Google Patents

Support en tissu de fibres melangees

Info

Publication number
EP1750904A1
EP1750904A1 EP05739775A EP05739775A EP1750904A1 EP 1750904 A1 EP1750904 A1 EP 1750904A1 EP 05739775 A EP05739775 A EP 05739775A EP 05739775 A EP05739775 A EP 05739775A EP 1750904 A1 EP1750904 A1 EP 1750904A1
Authority
EP
European Patent Office
Prior art keywords
fiber fabric
mixed fiber
weft
belt according
synthetic fibers
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.)
Withdrawn
Application number
EP05739775A
Other languages
German (de)
English (en)
Inventor
Larissa Kleger
Franz Tanner
Amina Gienuth
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.)
Sia Abrasives Industries AG
Original Assignee
Sia Abrasives Industries AG
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 Sia Abrasives Industries AG filed Critical Sia Abrasives Industries AG
Priority to EP05739775A priority Critical patent/EP1750904A1/fr
Publication of EP1750904A1 publication Critical patent/EP1750904A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B24D11/02—Backings, e.g. foils, webs, mesh fabrics
    • 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
    • B24D11/001—Manufacture of flexible abrasive materials
    • B24D11/005—Making abrasive webs

Definitions

  • the present invention relates to a new mixed fiber fabric underlay, which is particularly suitable for grinding wood, metal and minerals.
  • polyester yarn PES
  • the water resistance can be achieved without embrittlement of the PES fibers.
  • Fabrics equipped in this way have a very high thermal expansion and are therefore unsuitable for sanding wood due to the high temperatures that occur.
  • warp and weft threads are each made from an identical mixed fiber fabric.
  • mixed fibers made of 50% polyester and 50% cotton or 67% polyester and 33% cotton were used in commercial products.
  • a fabric underlay with warp and weft threads, each made of 67% polyester and 33% cotton has very good tear resistance, grain adhesion and water resistance, but also thermal expansion that is still too high.
  • the sanding belt is stretching too much, especially in the longitudinal direction.
  • the present invention relates to abrasive belts with a mixed fiber fabric base made of cotton and synthetic fibers, characterized in that the proportion of synthetic fibers in the weft is larger than in the warp.
  • the present invention relates to a protruding abrasive belt with a mixed fiber fabric backing made of cotton and synthetic fibers, the proportion of synthetic fibers in the chain in the range from 0% to 70% and the proportion of synthetic fibers in the weft is in the range from 10 to 100%.
  • the fabric backing in the abrasive belt according to the invention has a proportion of synthetic fibers in the chain in the range from 0% to 70% and a proportion of synthetic fibers in the weft in the range from 10 to 100%.
  • the fabric backing in the abrasive belt according to the invention preferably has a proportion of synthetic fibers in the chain in the range from 0% to 50% and a proportion of synthetic fibers in the weft in the range from 30 to 70%.
  • the fabric backing in the abrasive belt according to the invention particularly preferably has a proportion of synthetic fibers in the chain in the range from 25% to 40% and a proportion of synthetic fibers in the weft in the range from 40 to 60%.
  • the abrasive belt according to the invention with a mixed fiber fabric backing already has very good tear resistance in the longitudinal direction, without showing an undesirably high thermal expansion.
  • the comparatively higher proportion of synthetic fibers in the weft in the abrasive belt according to the invention with a mixed fiber fabric backing results in a very good tear resistance in the transverse direction, which among other things also enables the production of thin and therefore flexible fabric backings with a correspondingly thin weft yarn, without the required main properties such as low thermal expansion, robustness against belt breaks etc. are lost.
  • the proportion of synthetic fibers in the weft exceeds the proportion of synthetic fibers in the warp by at least 10%.
  • the inventive provision of warp and weft with different material properties thus optimally achieves the properties desired for sanding wood (water resistance, high tear resistance, low thermal expansion).
  • the above properties can be optimally adjusted according to the requirement profile by appropriate selection of the synthetic fiber portion in warp and weft.
  • each individual warp or weft thread is built up from the corresponding mixture, ie each individual thread has the corresponding synthetic fiber content.
  • the twists made from several yarns in warp and weft can also have the corresponding synthetic fiber content.
  • alternating threads of pure cotton and pure synthetic fiber can also be present in the warp and weft, so that, for example, 60% of synthetic fiber is present in the entire weft this means that there are correspondingly more threads and / or yarns made from pure synthetic fibers than threads and / or yarns made from pure cotton.
  • mixed threads ie each individual thread consists of fibers of cotton or synthetic fiber in each case
  • mixed threads ie a mixture of interconnected yarns, the mixture of synthetic fibers and cotton fibers defined according to the invention being present in the thread
  • the flexibility of the abrasive belt according to the invention with mixed fiber fabric underlay can be adapted to the requirement profile. Since the weft has a very good tear resistance due to the higher synthetic fiber content, it can be made thinner for applications where increased flexibility is required. On the other hand, the abrasive belt with the mixed fiber fabric backing according to the invention has increased robustness with the same thickness of the weft threads or the weft yarn.
  • conventional cotton and synthetic fibers can be used.
  • synthetic fibers which can be used are polyester fibers, nylon fibers, acrylic fibers or high-strength fibers such as, for example, Dynema or Lyocell fibers.
  • An amine oxide / water mixture for example a mixture of NNMO (N-methyl-morpholine-N-oxide) and water, is used as the solvent.
  • the cellulose dissolves in such a mixture.
  • the dissolved cellulose is then subjected to solvent spinning, which ter a spinning of a cellulose solution without formation of a derivative is to be understood.
  • the production of lyocell fibers is well known to the person skilled in the art. Lyocell fibers are available, for example, from Lenzing.
  • the abrasive belt with mixed fiber fabric underlay can have different synthetic fibers in warp and weft.
  • the yarn is spun in the ring fiber (including ComforSpin), rotor, air jet (including Murata Vortex) or friction spinning process in the mixed fiber fabric underlay.
  • the mixed fiber fabric underlay described above is first provided with a finish for the production of the abrasive belt according to the invention.
  • the finish serves to mechanically solidify and smooth the surface. With it, however, the water resistance can also be increased if necessary.
  • Hard finishes can network with cotton fibers, soft finishes cannot, however, self-crosslinking finishes can be used.
  • the finishing materials are well known to the person skilled in the art. Examples include: synthetic resins such as urea-formaldehyde resins, phenolic resins, epoxy resins, plastic dispersions or native raw materials such as skin glue or starch, or elastic raw materials based on latex such as copolymers of vinyl acetate and ethylene, butadiene-styrene copolymers, acrylic acid esters or butadiene-acrylonitrile Styrene or polyurethanes or their polymers, or mixtures thereof.
  • a soft finish is preferred. This applies in particular to the underlay preferred according to the invention with a synthetic fiber component made from lyocell fibers.
  • a hard finish should preferably be used.
  • pre-wetted (wet pre-sized) warp yarns are used without removal of the size (i.e. the protective film) before finishing.
  • the abrasive grain is attached to the finished surface with the help of a binding agent.
  • All substances conventionally used for this purpose can be considered as binders, for example phenolic resins.
  • the abrasive grains used for conventional grinding applications can be used as abrasive grains.
  • Examples include silicon carbide and aluminum oxide.
  • the abrasive grain is applied to the base by conventional methods known to those skilled in the art.
  • the electrostatic scattering process may be mentioned as an example.
  • the present invention is explained in more detail below on the basis of non-limiting examples and comparative examples.
  • FIG. 1 shows the thermal expansion of the documents according to the examples and comparative examples.
  • FIG. 2 shows the chain tear resistance of the documents according to the examples and comparative examples.
  • FIG. 3 shows the weft tear resistance of the documents according to the examples and comparative examples
  • a pure cotton fabric pad according to the following specifications was provided:
  • Impregnation type synthetic medium hard (urea resin / latex) chain side coat synthetic (latex / filler)
  • the yarn spun in the OE process was woven in the usual way (weave: twill weave).
  • a protective film size was provided to facilitate weaving on the warp yarn.
  • This film can be applied conventionally or by means of pre-net sizing technology (wet pre-sizing), which is known to the person skilled in the art. Prewetting brings a sizing reduction by 30 to 40%.
  • Various materials such as polyvinyl alcohol, starch, carboxymethyl cellulose can be used as size.
  • the impregnation was applied to the underlay using a finishing pad. The material was then fixed in the stenter and gradually dried.
  • the chain side was coated with a doctor knife and dried using a tenter and / or thermal cylinder.
  • the build-up to CA was carried out in a manner known per se by applying a base binder (make coat), applying the grain (electrostatically) and the cover binder (size coat) with, in accordance with the prior art, and then drying / curing.
  • a fabric underlay made of 50% cotton and 50% of a conventionally used polyester in warp and weft was provided according to the following specifications:
  • Yarn fiber blend of polyester (common types) / cotton, open end (OE).
  • Fabric construction thread number / 1 cm: warp-35, weft-19.
  • a fabric underlay made of 50% cotton and 50% of a conventionally used polyester in warp and weft was provided analogously to Comparative Example 2, with the difference that a softer finish made of urea resin / plastic was used.
  • a fabric underlay made of 33% cotton and 67% of a conventionally used polyester in warp and weft was provided analogously to Comparative Example 2.
  • a mixed fiber fabric underlay according to the invention with a chain made of 33% polyester and 67% cotton and a weft made of 50% polyester and 50% cotton was produced analogously to Comparative Example 2, with the difference that a softer finish made of urea resin / plastic was used.
  • the thermal expansion and the tear resistance of the warp and weft were determined.
  • the thermal expansion was tested using a tensile testing machine with an integrated thermal chamber.
  • the finished tissue sample was coated with the base resin.
  • test specimens (240x40 mm) were cut out of this material in the longitudinal direction.
  • the test pieces were subjected to the tensile test machine under a constant load to the following temperature profile: 20 ° C / 50 o C / 80 o C / 110 ° C.
  • the strain values (in%) for each sample at the different temperatures were recorded.
  • the tear resistance was checked using a tensile testing machine.
  • the sample, finished fabric was coated with the base resin.
  • test specimens 200x20 mm
  • test specimens were cut out in the longitudinal direction (warp) and transverse direction (weft) from this material. These test specimens were run in the tensile testing machine until the test broke.
  • the breakage of the individual threads (in N) was recorded for each sample as a function of the elongation (%).
  • the underlay according to example 1 has low thermal expansion values, which come very close to those of an underlay made of pure cotton.
  • the mixed fiber underlays according to Comparative Examples 2 to 4 sometimes had significantly higher and therefore poorer thermal expansion values.
  • Fig. 2 it can be seen that the base according to Example 1 has a tear resistance in the chain, which corresponds to that of Comparative Example 4 and is superior to all other Comparative Examples.
  • the base according to example 1 is superior to the bases according to the comparative examples in the overall view of the properties of thermal expansion and tearing resistance warp / weft.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Woven Fabrics (AREA)

Abstract

La présente invention concerne une bande abrasive pourvue d'un support en tissu de fibres mélangées, constitué de coton et de fibres synthétiques. Selon l'invention, l'ensemble des fils de chaîne contiennent 0 à 70 % de fibres synthétiques tandis que l'ensemble des fils de trame contiennent 10 à 100 % de fibres synthétiques et le pourcentage de fibres synthétiques dans l'ensemble des fils de chaîne est différent du pourcentage de fibres synthétiques dans l'ensemble des fils de trame.
EP05739775A 2004-05-13 2005-05-11 Support en tissu de fibres melangees Withdrawn EP1750904A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05739775A EP1750904A1 (fr) 2004-05-13 2005-05-11 Support en tissu de fibres melangees

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP04405305A EP1595646A1 (fr) 2004-05-13 2004-05-13 Toile sous-jacente à fibre mixte
EP05739775A EP1750904A1 (fr) 2004-05-13 2005-05-11 Support en tissu de fibres melangees
PCT/EP2005/052133 WO2005110681A1 (fr) 2004-05-13 2005-05-11 Support en tissu de fibres melangees

Publications (1)

Publication Number Publication Date
EP1750904A1 true EP1750904A1 (fr) 2007-02-14

Family

ID=34932110

Family Applications (2)

Application Number Title Priority Date Filing Date
EP04405305A Withdrawn EP1595646A1 (fr) 2004-05-13 2004-05-13 Toile sous-jacente à fibre mixte
EP05739775A Withdrawn EP1750904A1 (fr) 2004-05-13 2005-05-11 Support en tissu de fibres melangees

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP04405305A Withdrawn EP1595646A1 (fr) 2004-05-13 2004-05-13 Toile sous-jacente à fibre mixte

Country Status (2)

Country Link
EP (2) EP1595646A1 (fr)
WO (1) WO2005110681A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT507758A1 (de) * 2008-12-23 2010-07-15 Chemiefaser Lenzing Ag Yarn and threads from blends of fibres and articles therefrom
DE102010036554A1 (de) 2010-07-21 2012-01-26 Bamberger Kaliko Gmbh Verbundmaterial für die Weiterverarbeitung in flächige Schleifprodukte sowie Verfahren zu dessen Herstellung
CN102363356B (zh) * 2011-09-19 2014-02-19 泉州市易光石材工具有限公司 一种尼龙磨带的制造方法
DE102013224549A1 (de) 2013-11-29 2015-06-03 Neenah Gessner Gmbh Schleifmittelträger, Schleifartikel umfassend den Schleifmittelträger sowie deren Herstellungsverfahren

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1652921A1 (de) * 1967-10-25 1971-04-29 Reichhold Albert Chemie Ag Schleifkorntraegergewebebahn aus regenerierten Cellulosefasern und Verfahren zu deren Herstellung
CA1052587A (fr) * 1974-07-24 1979-04-17 Raymond E. Pemrick Substrats de stabilite dimensionnelle amelioree
US4437865A (en) * 1982-08-27 1984-03-20 Carborundum Abrasive Company Flexible backing material for use in coated abrasives
FR2608176B1 (fr) * 1986-12-15 1991-01-11 Ebauchesfabrik Eta Ag Ruban tisse
US5437700A (en) * 1990-10-03 1995-08-01 Minnesota Mining And Manufacturing Company Polyester/viscose composite yarns and fabric material containing said yarns as flexible coated abrasive support

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005110681A1 *

Also Published As

Publication number Publication date
EP1595646A1 (fr) 2005-11-16
WO2005110681A1 (fr) 2005-11-24

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