Classifications

• • D—TEXTILES; PAPER
  • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
  • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
  • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
  • D02G1/20—Combinations of two or more of the above-mentioned operations or devices; After-treatments for fixing crimp or curl
  • D02G1/205—After-treatments for fixing crimp or curl
• • 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
  • 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
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/23907—Pile or nap type surface or component
  • Y10T428/23921—With particles
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/23907—Pile or nap type surface or component
  • Y10T428/23993—Composition of pile or adhesive
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
  • Y10T442/2008—Fabric composed of a fiber or strand which is of specific structural definition

Definitions

• the invention relates to the use of textured yarns made from polyester filaments in the manufacture of coated abrasives.
• Coated abrasive is the common term used in the abrasive industry for the numerous products that consist of a flexible pad coated with abrasive grain. It corresponds to the term "coated abrasives" used in the English-speaking world.
• DE-PS 3 218 441 mentions various types of filament yarns which can be used for the production of a base fabric which serves as a base.
• the yarns can consist of filaments which have a profiled, e.g. have triangular cross-section, there is also talk of fibers which have lateral extensions as spacers, without it being explained in more detail how these lateral extensions should be designed.
• Example 1 speaks generally of a hot air process, without further details being given.
• Example 5 of this patent it is demonstrated in a comparative example that false-twist textured yarns have disadvantages for the production of underlays because number rich loops solidified with impregnating compound protrude from the surface, so that, as usual, abrasives produced lose the binder grain layer after a few minutes of grinding time.
• olyesterfilamentgarne which can be used in the manufacture of coated abrasives position advantageously still a need on textured P so that it is possible to arrive at abrasives that have a smooth and clean surface and a long working life have that do not quickly lose their binder grain layer during grinding, which moreover also have a high level of adhesion between the base and the abrasive grain in the area of the fine grains and in which the base has a good absorption capacity for the binder.
• textured polyester filament yarns in the manufacture of S chleif- agents on a backing, which is characterized in that the yarns are blasdüsentexturiert and thermally stabilized and have loops and arcs, of which at least ein.Teil freely outstanding loops and Arches are.
• the yarns used preferably have between 10 and 80 freely protruding loops and bows per running cm of yarn.
• the loops and bows can be partially opened to form freely protruding fiber ends.
• the hot air shrinkage of the yarn is preferably at most 6%, in particular at most 2%.
• the boiling shrinkage of the filament yarns is preferably at most 0.5 to 4%.
• yarns are used which have been subjected to false twist texturing with a low number of turns before texturing the blow nozzle and which have been blown cold and fixed hot after the false twist texturing.
• Such yarns expediently have a total titer of 100 to 1200 dtex and have been subjected to false twist texturing at 1200 to 1800 revolutions / minute and have been subjected to fixation in the temperature range from 180 to 225 ° C. during the false twist texturing.
• Such yarns can advantageously be used to build up the fabric serving as a base untwisted or with a protective twist of 80 to 400 turns / meter.
• yarns are used which are characterized in that the blast-textured yarns are guided in at least one turn in at least one turn prior to stabilization via one or more rollers which are rotatably mounted one behind the other in the course of the thread, so that the bundle of threads fed to the rollers does this covers at least of the rollers running fiber bundle in its edge region and thereby of the effluent F adenbündels clamps the projecting beyond the thread run loops and coils on the reel, forming free outstanding fiber ends.
• the rollers rotatably mounted one behind the other can have rough surfaces.
• Woven underlays are very suitable for the abrasives in the context of the invention. It is also advantageous if the base is a pile fabric, in particular a sewn pile fabric.
• the yarns used according to the invention can contain filament mixtures of different titers or different cross sections.
• Blower-textured yarns made of polyester filaments are produced by texturing by means of a texturing nozzle which works according to the air jet principle.
• blower-textured yarns are e.g. in the journal Chemiefaser / Textil-Industrie, October 1975, pages 929 ff.
• the yarns textured according to the process described in DE-OS 27 49 867 have loops and arches which partially protrude beyond the thread periphery. As such, if they are appropriately stabilized, such yarns can be used in accordance with the invention.
• these blower-textured threads are preferably guided at least in one turn by way of one or more rotatable rollers mounted one behind the other in the thread path.
• the bundle of threads fed in must cover the bundle running off the rolls at least in its edge area and clamp the loops and arches of the running bundle of thread protruding above the thread core on the roll; part of the loops and arches that are clamped are opened, i.e. torn.
• the yarns treated in this way are then subjected to thermal stabilization.
• the polyester filament yarns are subjected to false twist texturing with a low number of turns before the blowing nozzle texturing.
• low number of turns means a number of turns that is below the number of turns, as is usually used in false twist texturing.
• the most appropriate number of turns depends on the total titer of the yarn to be treated. For total titers from 10.0 to 1200 dtex, tours from 1200 to 1800 are preferred.
• a temperature of 180 to 225 ° C. is preferably maintained in the fixing zone during false twist texturing.
• the false twist textured yarns are then blown cold and then fixed in a manner as already mentioned above.
• yarns of the same or different titer can be used in the warp and weft.
• the fabrics can be constructed in the usual weaves.
• the weight of the fabric can be, for example, 150 to 500 g / m 2 .
• the underlay consists of a single fabric, e.g. a tissue.
• two or more types of fabrics can also be used, e.g. Connect the fleece and the fabric together.
• the yarns are used in documents in the form of a pile fabric.
• pile fabric is to be understood as a textile fabric in which the yarns have elevations due to their processing, as is the case e.g. is the case with tufted material.
• These poles can be closed or open.
• Suitable presentations of polar articles which can be used as a base in the manufacture of abrasives and in which the yarns can be used according to the invention, are mentioned, for example, in German Utility Model, roll number 82 37 962.1 on page 4. The disclosure in this German utility model is expressly referred to here.
• Sewn knitted documents or documents with a corresponding weft entry are very suitable.
• Malimo, Malipol and Maliwatt goods are expressly mentioned here.
• the use according to the invention on the one hand achieves the advantages which are otherwise generally achieved with fiber yarns, i.e. achieved with staple fiber yarns, on the other hand, a number of advantages that are only obtained with filament yarns are also achieved.
• the base Due to the special structure of the yarns, the base is very absorbent for the binder, so that the binder can also penetrate into the interior of the base, thus ensuring that grain adheres well to the base.
• the documents have the required mechanical properties, in particular strength, tear resistance, low reference elongation, especially for fabrics.
• the abrasives which are accessible through the use of yarns according to the invention, can be used for both wet and dry grinding.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Textile Engineering (AREA)
• Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
• Woven Fabrics (AREA)
• Polishing Bodies And Polishing Tools (AREA)
• Treatment Of Fiber Materials (AREA)

Applications Claiming Priority (2)

Publications (3)

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ID=6213457

Family Applications (1)

Country Status (4)

Cited By (1)

Families Citing this family (5)

Citations (6)

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• 1983
  • 1983-11-04 DE DE19833339911 patent/DE3339911A1/de not_active Withdrawn
• 1984
  • 1984-10-04 EP EP84111880A patent/EP0141284B1/fr not_active Expired
  • 1984-10-30 US US06/666,522 patent/US4692365A/en not_active Expired - Fee Related
  • 1984-11-02 JP JP59230516A patent/JPS60114468A/ja active Pending

Patent Citations (6)

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