US3650243A - Device for the uniform application of small amounts of a powdery material onto surface configurations - Google Patents

Device for the uniform application of small amounts of a powdery material onto surface configurations Download PDF

Info

Publication number
US3650243A
US3650243A US848505A US3650243DA US3650243A US 3650243 A US3650243 A US 3650243A US 848505 A US848505 A US 848505A US 3650243D A US3650243D A US 3650243DA US 3650243 A US3650243 A US 3650243A
Authority
US
United States
Prior art keywords
disc
spreader
textile fabric
onto
particulate material
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.)
Expired - Lifetime
Application number
US848505A
Other languages
English (en)
Inventor
Hans Brehm
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.)
Carl Freudenberg KG
Original Assignee
Carl Freudenberg KG
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 Carl Freudenberg KG filed Critical Carl Freudenberg KG
Application granted granted Critical
Publication of US3650243A publication Critical patent/US3650243A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
    • B05C19/04—Apparatus specially adapted for applying particulate materials to surfaces the particulate material being projected, poured or allowed to flow onto the surface of the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/0207—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the work being an elongated body, e.g. wire or pipe
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
    • D06N3/0088—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin
    • D06N3/0093—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin by applying resin powders; by sintering

Definitions

  • Cl ..BOSb 7/14 an inwardly directed spiral bead thereon and an aperture in [58] Field of Search ..1 17/16, 21, 24, 33, 104,122; the center thereof, a centrifugal pr disc disposed 113 230 303 313; 239/223 224 656 7 673 beneath the feeder disc, means for, rotating the discs, and 682, 687 means for passing the fabric beneath the spreader disc whereby only part of the annular centrifuged particles are deposited on the textile fabric. 15
  • FIG.3 PRIOR ART FIG.3
  • Such a stiffening material can be joined to another fabric by placing its polyethylene containing side juxtaposed the other material to be reinforced and passing a hot iron over the back (nonpolyethylene containing) side of the stiffening material. In the process, the polyethylene particles will soften once again and thus produce a firm bond between the two materials.
  • thermoplastic adhesive grains it is particularly difficult to obtain uniform distribution of the thermoplastic adhesive grains in those cases in which only very small amounts of grain are to be applied, e.g., 5g./sq.m. In these cases, each grain is, for all practical purposes, separated from the other ones. However, satisfactory ironing requires that the distance from grain to grain be as uniform as possible.
  • the apparatus of the instant invention which comprises means for depositing the particulate coating material onto a feeder disc with an inwardly directed spiral bead thereon and an aperture in the center thereof, a centrifugal spreader disc disposed beneath the feeder disc, means for rotating the discs, and means for passing a textile fabric beneath the spreader disc whereby only part of the annular centrifuged particles are deposited on the textile fabric.
  • FIG. I is a prospective view of a slot powder deposition means.
  • FIG. 2 is a partial sectioned end view of the slot deposition means of FIG. 1.
  • FIG. 3 shows an end view of centrifugal spreader disc.
  • FIG. 4 is similar to FIG. 3, showing the spreader disc in operation.
  • FIG. 5 is a plan view of particulate material spread between spreader disc of FIG. 4.
  • FIG. 6 is an end view of a spreader disc assembly.
  • FIG. 7 is a plan view of the particulate material spread as shown in FIG. 6.
  • FIG. 8 is similar to FIG. 6 but showing a more complicated spreader disc arrangement.
  • FIG. 9 is a plan view of an annular ring of a particulate material disposed on one of the intermediate spreader disc of FIG. 8.
  • FIG. 10 is a prospective view of a feeding means.
  • FIG. 1 1 is a prospective view of the entire apparatus of this invention.
  • thermoplastic adhesive powders are known to tend to agglomerate. There are then formed large lumps in the initially fine-grained powders in the vibrator trough, which are no longer able to pass through the narrow slot. Thus, the slot is, in part, blocked and the web passing therebeneath does not receive any powder coating whatsoever in the areas corresponding to these blockage points. It is known to be possible to break up such lumps with a thin wire that is pressed, from the top, against the lumps situated in the trough over the slot 2; however, this action tends to, at least temporarily, cause an excessive amount of powder to be deposited on the web situated therebeneath.
  • the present invention obviates all of these drawbacks by a reversal of the spreader disc principle. If it has been the case, in the past, that a movable spreader disc was gliding over a web in movement, the very contrary is true in the case of the invention.
  • the endless web to be powdered passes under a fixedly mounted spreader disc. This principle is to be explained by means of FIGS. 3 to 11.
  • FIG. 3 shows a spreader disc 4 capable of rotation around the shaft 3. If granular material is applied to the disc 4, without rotation of the disc, said material will of course first remain lying on the disc.
  • the powder 6 is, as can be expected, flung by centrifugal force over the edges of the disc 4 and drops then onto the table 5.
  • the distribution pattern will then be present substantially in the shape of a wide ring, as can be seen in FIG. 5.
  • the web will pass uninterruptedly through the two rain regions 11 and 12.
  • the grains will drop uniformly distributed within the zones 11 and 12, and therefore downstream of the zone 11 will also consequently exhibit an extremely uniform application of grains.
  • the web can then be passed through a heating chamber preferably as soon as possible, where the particles are softened and affixed by sintering onto the carrier web.
  • the initially uniform application of the grains cannot be disturbed after sintering, and is not disturbed in the short transit between spreading and sintering of the grains. Such a disturbance would occur only if the web would have to run over a very long period prior to the fixing of the grain particles.
  • a uniform and constant delivery of particles within the zones II and 12 requires as a prerequisite, a uniform feeding of powder onto the spreader disc 4. This is achieved in accordance with the invention by not directly applying onto the spreader disc 4. Rather, auxiliary additional spreader discs are used, as can be seen in FIG. 8.
  • the powder thus drops out of a standard vibrator trough 13 into a conduit 14 and from there onto a first rotating spreader disc 15, from there onto the likewise rotating second spreader disc 16 which is wider than the first spreader disc and from there onto the principal spreader disc 4 from which the grains are finally spread onto the web in motion therebeneath, according to this invention, as described above in connection with FIGS. 3 to 7.
  • the primary and secondary discs 15 and 16 are respectively surrounded, at a distance of a few centimeters about their entire circumferences, by deflector plates 15a and 16b.
  • the powder grains first applied to the primary disc 15 are then, due to the centrifugal force, flung against the deflector plate 15a and dropped from there onto the secondary disc 16.
  • the powder coming out of the conduit 14 may, for all practical purposes, still fall on any part of the primary disc 15, the grains which fall from the primary disc 15 onto disc 16 fall in an annular ring as shown in FIG. 9. Those parts that are situated directly beneath the primary disc 15 remain practically free of any powder grains. If the secondary disc 16, in turn, did not rotate, the powder falling down thereonto from the plate 15a would collect thereon in the form of a very narrow ring 17 as shown in FIG. 9. From there upon rotation of the secondary disc 16, the powder grains are flung over its edge and against the deflector plate 16b from which the powder grains-once again in the form of a round bandfall onto the principal spreader disc 4, also illustrated by the configuration of FIG. 9. Because the round strip of powder grains on this disc 4 is now already very uniform with respect to its width and distribution of powder grains therein, a high degree of uniformity of distribution of powder grains is achieved within the segments 11 and 12 (ofFlG. 7).
  • the segments 11 and 12 will have substantially no arc therein.
  • the two deposition zones 1 1 and 12 will be substantially rectangular.
  • Still greater uniformity in powder distribution on the web 5d can be achieved if the powder is allowed to drop first onto a slowly rotating disc 18 provided in its center with a large opening 21, as can be seen in FIG. 10. Onto this disc 18 there has loosely been mounted a bead 19. This bead 19 is spiral shaped with one single spiral winding being present within 360 C. One end of the spiral 19 terminates at the edge of the hole 21 in the disc and the other at the outer edge of the disc 18.
  • Powder falls from a hopper 20 onto the disc 18 rotating in the direction of the arrow (i.e., clockwise).
  • the bead 19 does not rotate with the disc 18 but rather is stationary whereby guiding the powder grains from the hopper 20 toward the hole 21.
  • the powder dropping out of the end of the hopper onto the disc 18 rotates with the disc.
  • the powder is pressed more and more against the wall of the bead 19 while at the same time, excess powder that has no more space on the increasingly smaller strip is pressed over the edge of the hole and drops from there onto the discs situated therebeneath where, due to centrifugal force in the manner described above, it will via a plurality of discs 15, 16 and 4, finally fall onto the web in the form of two strips 11 and 12.
  • the disc 18 rotates extremely slowly (preferred circumferential speed 10 m./min.) so that, substantially no noticeable centrifugal force is applied to the powder grains falling through the hole 21.
  • the discs 15, 16, and 4 rotate about 30 times faster than the disc 18.
  • FIG. 11 schematically illustrates the entire preferred embodiment of this invention permitting maximum uniformity of grain deposition.
  • FIG. 11 shows the web 5a not running during production of the circular strip of grains 21.
  • the bands of grains 21a and 21b are illustrated as if the web 5 was moved out in the direction of the arrow, from under the spreader 16. These bands 21a and 21b correspond to the segments 11 and 12 in FIG. 7.
  • the grain particles being spread to the right and to the left beyond the width of the web are deliberately cast away in the process according to the application. These powder portions can be collected again in the manner illustrated in FIG. 8 and then reused by placing them in the hopper 20.
  • Apparatus for applying particulate material to a substantially continuous textile fabric comprising: feed and takeup means for said textile fabric and textile fabric disposed therebetween; centrifugal spreader means assembly disposed above said textile fabric between said feed and takeup means; motive means operatively connected to said spreader means assembly to impart rotation thereto; feed means disposed above said spreader means assembly for depositing particulate material to be spread on said spreader means assembly, wherein said spreader means assembly includes at least one spreader disc, a distributor disc having at its center an aperture therein disposed above said spreader disc and a substantially stationary spiral bead means on said distributor disc for directing particulate material deposited on said distributor disc toward and through said aperture wherein said feed means is positioned to feed particulate material onto said distributor disc and said distributor disc feeds particulate material through said aperture onto said spreader disc, wherein the speed of rotation of said spreader disc and the maximum diameter of said spreader disc are suflicient to cause said particulate material to be centrifuged off said spreader disc in an annular
  • PP as claimed in clam including multiple 4.
  • Apparatus as claimed in claim 2, including peripheral discs have a common axial drive shaft.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Coating Apparatus (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Nozzles (AREA)
  • Adhesive Tapes (AREA)
US848505A 1969-04-09 1969-08-08 Device for the uniform application of small amounts of a powdery material onto surface configurations Expired - Lifetime US3650243A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691918033 DE1918033A1 (de) 1969-04-09 1969-04-09 Verfahren und Vorrichtung zum gleichmaessigen Aufbringen geringer Mengen eines pulverfoermigen Materials auf Flaechengebilde

Publications (1)

Publication Number Publication Date
US3650243A true US3650243A (en) 1972-03-21

Family

ID=5730700

Family Applications (1)

Application Number Title Priority Date Filing Date
US848505A Expired - Lifetime US3650243A (en) 1969-04-09 1969-08-08 Device for the uniform application of small amounts of a powdery material onto surface configurations

Country Status (8)

Country Link
US (1) US3650243A (enrdf_load_stackoverflow)
JP (1) JPS4812107B1 (enrdf_load_stackoverflow)
AT (1) AT305941B (enrdf_load_stackoverflow)
BE (1) BE748301A (enrdf_load_stackoverflow)
DE (1) DE1918033A1 (enrdf_load_stackoverflow)
FR (1) FR2042876A5 (enrdf_load_stackoverflow)
GB (1) GB1303128A (enrdf_load_stackoverflow)
NL (1) NL6910762A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900602A (en) * 1970-05-15 1975-08-19 Siemens Ag Method and device for the manufacture of catalytic layers for electrodes in electrochemical cells, particularly fuel cells
ES2066724A2 (es) * 1993-06-02 1995-03-01 Talleres Foro S A Maquina para aplicar producto en polvo o liquido sobre piezas transportadas por bandas.
EP1260274A1 (en) * 2001-05-15 2002-11-27 Premark RWP Holdings, Inc. Assembly for distributing solid particles on a moving web
US9616442B2 (en) 2013-06-22 2017-04-11 KSi Conveyor, Inc. Rotating disk atomizer with treatment fluid feed arrangement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3405712A1 (de) * 1984-02-17 1985-08-22 Degussa Ag, 6000 Frankfurt Vorrichtung zum trockenauftragen von fliessfaehigen granulaten

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2804309A (en) * 1954-07-26 1957-08-27 Brantford Coach And Body Ltd Sand spreader
US2962381A (en) * 1957-07-02 1960-11-29 Congoleum Nairn Inc Segment wheel feeder
US2993309A (en) * 1956-04-26 1961-07-25 Bell Intercontinental Corp Machine for the surface treatment of thin plastic films
US3014812A (en) * 1958-11-21 1961-12-26 Bird & Son Method and apparatus for spreading particles
US3342415A (en) * 1963-02-19 1967-09-19 Sames Sa De Machines Electrost Electrostatic coating system
US3478969A (en) * 1966-03-09 1969-11-18 Frederick J Lund Pneumatic precipitating powder applying apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2804309A (en) * 1954-07-26 1957-08-27 Brantford Coach And Body Ltd Sand spreader
US2993309A (en) * 1956-04-26 1961-07-25 Bell Intercontinental Corp Machine for the surface treatment of thin plastic films
US2962381A (en) * 1957-07-02 1960-11-29 Congoleum Nairn Inc Segment wheel feeder
US3014812A (en) * 1958-11-21 1961-12-26 Bird & Son Method and apparatus for spreading particles
US3342415A (en) * 1963-02-19 1967-09-19 Sames Sa De Machines Electrost Electrostatic coating system
US3478969A (en) * 1966-03-09 1969-11-18 Frederick J Lund Pneumatic precipitating powder applying apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900602A (en) * 1970-05-15 1975-08-19 Siemens Ag Method and device for the manufacture of catalytic layers for electrodes in electrochemical cells, particularly fuel cells
ES2066724A2 (es) * 1993-06-02 1995-03-01 Talleres Foro S A Maquina para aplicar producto en polvo o liquido sobre piezas transportadas por bandas.
EP1260274A1 (en) * 2001-05-15 2002-11-27 Premark RWP Holdings, Inc. Assembly for distributing solid particles on a moving web
US9616442B2 (en) 2013-06-22 2017-04-11 KSi Conveyor, Inc. Rotating disk atomizer with treatment fluid feed arrangement
US10729061B2 (en) 2013-06-22 2020-08-04 KSi Conveyor, Inc. Rotating disk atomizer with treatment fluid feed arrangement

Also Published As

Publication number Publication date
DE1918033A1 (de) 1970-10-15
NL6910762A (enrdf_load_stackoverflow) 1970-10-13
BE748301A (fr) 1970-10-01
GB1303128A (enrdf_load_stackoverflow) 1973-01-17
FR2042876A5 (enrdf_load_stackoverflow) 1971-02-12
AT305941B (de) 1973-03-26
JPS4812107B1 (enrdf_load_stackoverflow) 1973-04-18

Similar Documents

Publication Publication Date Title
US2318570A (en) Manufacture of abrasives
US3667422A (en) Apparatus for transferring a particulate material to a web
CA1258204A (en) Method and apparatus of spraying or scattering powder
US5053254A (en) Process for applying partial coatings
US2857879A (en) Apparatus for preparing abrasive articles
US6423123B1 (en) Filtering material for fluidic media and a method and device for producing such a filtering material
US2376343A (en) Manufacture of abrasives
US4188130A (en) Device for continuously mixing wood chips with binder
US3650243A (en) Device for the uniform application of small amounts of a powdery material onto surface configurations
NO129796B (enrdf_load_stackoverflow)
US3979529A (en) Electrostatic application of thermoplastic adhesive
US6465058B2 (en) Magnetic method for depositing granules onto an asphalt-coated sheet
US20190054501A1 (en) Screening device for the generative manufacturing of components
US2733172A (en) Apparatus and method of producing
GB1345811A (en) Free-flowing particles of solid tacky synthetic thermoplastics materials and processes for their manufacture
US4209553A (en) Method and apparatus for making material with a fusible backing
US3014812A (en) Method and apparatus for spreading particles
US4068618A (en) Apparatus for making material with fusible backing
SU531480A3 (ru) Установка дл нанесени пудры на обе стороны полотнища пленки
JPS58501495A (ja) 粒状材料の散布装置
US2376342A (en) Manufacture of abrasives
US4524810A (en) Method and apparatus for controlling the density distribution of bulk material
JP2596705B2 (ja) 繊維の面状構成体を製造する方法と装置
US6183559B1 (en) Rotatable coating hopper
US3376849A (en) Apparatus for the distribution of granular material