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US3466899A - Apparatus for padding and other subsequent treatment of loose stock textile fibers - Google Patents

Apparatus for padding and other subsequent treatment of loose stock textile fibers Download PDF

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Publication number
US3466899A
US3466899A US555775A US3466899DA US3466899A US 3466899 A US3466899 A US 3466899A US 555775 A US555775 A US 555775A US 3466899D A US3466899D A US 3466899DA US 3466899 A US3466899 A US 3466899A
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United States
Prior art keywords
stock
steam
rollers
pad
mangle
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Expired - Lifetime
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US555775A
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English (en)
Inventor
Leo Drago
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.)
ILMA IND LAVORAZIONI METALLI A
Ilma Ind Lavorazioni Metalli Antiacidisas
Novartis AG
Original Assignee
ILMA IND LAVORAZIONI METALLI A
JR Geigy AG
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
    • D06B1/10—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by contact with a member carrying the treating material
    • D06B1/14—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by contact with a member carrying the treating material with a roller
    • D06B1/148—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by contact with a member carrying the treating material with a roller the treating material being supplied to the roller by spraying or pouring

Definitions

  • This invention relates to apparatus for continuously padding with an impregnation liquor, and particularly for pad-dyeing, and for fixation of impregnating agent by heating in a humid medium, especially by steaming, of loose stock of textile fibers, in particular such stock consisting of natural or synthetic polyamide fibers, cellulosic fibers such as cotton, acrylic fibers, stable rayon, modified polyester fibers and the like.
  • the invention further relates to process for the above-described treatment of such fibers.
  • apparatus which comprises a pair of rollers mounted one above the other to constitute a pad mangle and the lower roller serving simultaneously as a guide or breastroller for an endless conveyor belt, of resilient material, preferably rubber, the upper reach of which belt extends in horizontal direction and serves to transport the loose stock towards and into the pad mangle.
  • Pad liquor is being sprayed from one or several spray nozzles onto the stock which is being carried on the conveyor belt towards the pad mangle. Excess pad liquor is then squeezed off in the mangle and the matted material emerging on the other side of the mangle is then conducted downwardly into a steaming zone.
  • the latter consists usually of a horizontally extending tube or duct into which the impregnated and squeezed mat of loose stock is being pushed by suitable mechanical means which are arranged for reciprocating action in association with the steaming tube or duct.
  • a third drawback is the relatively short life of the conveyor belts which are usually made of rubber or similar material and are exposed to high mechanical stresses, e.g. pressure between the rollers of the pad mangles and bending. Difiiculties are also encountered when attempting to introduce stock of particularly short fibers having fine deniers into a pad mangle of such known apparatus; it has been found that only staple fibers of about 15 deniers or thicker and at least about four inches of length are satisfactorily carried between the rollers of a pad mangle while shorter fibers of less deniers have a tendency to form a pulpy agglomeration at the feed side of the mangle.
  • an object of the present invention to provide process and apparatus for the padding and subsequent steaming of loose fibers stock, which avoids at least some or all of the above-enumerated drawbacks.
  • the apparatus comprising, in a padding station, a pair of rollers mounted above each other with their axes in parallel position in a substantially vertical plane and spaced from each other, so as to constitute a pad mangle, means for preparing and shaping the loose stock to be treated so that it is given the appearance of an untufted mattress wherefore it will be referred to hereinafter as the mattress conveying means for transporting the mattress to the vicinity of the said pad mangle, chute or sliding means ending at the level of the plane of contact of the two rollers of the pad mangle with each other and close to the entry side for that mangle, down which sliding means the said mattress of loose stock slides into contact with said mangle, reciprocating pusher means for pushing successive zones of the stock mattress away from the end of said chute or sliding means between said pair of rollers of the pad mangle, said mattress being drawn into the contact region of said rollers, means for applying pad liquor
  • the padding and steaming process thus comprises, as most essential features, feeding .a continuous mattress of preferably pre-matted stock to an impregnating and squeezing zone, with the aid of reciprocating conveying means, especially carrier or pushing means, applying to the stock immediately prior to the exertion of pressure thereon, on the upper side thereof, a thin, preferably coherent film of pad liquor, thereby substantially or completely avoiding foam formation at this process phase; squeezing and simultaneously thoroughly impregnating the loose stock in the said impregnation and pressure zone, with the previously applied impregnation liquor; optionally detaching the mat of stock emerging from the said impregnation and pressure zone; guiding the resulting impregnated and squeezed mat into a steaming zone; in the latter zone exposing the mat to steam which is preferably saturated or slightly superheated, whereby the mat is blown up, i.e., its volume is considerably increased, which phenomenon is largely aided by foam formation produced by foam-forming agents in the pad liquor, and
  • the fibrous material to be treated Before the fibrous material to be treated enters the apparatus according to the invention, it is passed from a feeding device to other conventtional devices which serve at the same time to spread the fibrous materia and to impart thereto a certain compactness of substantially uniform density so as to form what has been termed a mattress hereinbefore.
  • Such devices comprise, for example, a hopper which loads the fibrous material, for instance wool,, cotton, synthetic fibers such as nylon, acrylic fibers, polyester fibers and the like, or blends thereof, onto conveying means which carry the material to an adjustable device for spreading and levelling material and equalizing its thickness; and further through a device which serves, on the one hand, to eliminate knotted and/ or hardened fibers and, on the other hand, spreads the material out on the conveying means to form a fibrous layer, the so-called mattress, of substantially uniform thickness and density.
  • a hopper which loads the fibrous material, for instance wool,, cotton, synthetic fibers such as nylon, acrylic fibers, polyester fibers and the like, or blends thereof, onto conveying means which carry the material to an adjustable device for spreading and levelling material and equalizing its thickness; and further through a device which serves, on the one hand, to eliminate knotted and/ or hardened fibers and, on the other hand, spreads the material out on the conveying means to form a fibrous layer, the so
  • FIGURE 1 represents a first, preferred embodiment of an apparatus according to the invention, the padding unit being shown in a broken perspective view and the entry zone of the steaming unit in schematical sectional sideview;
  • FIGURE 2 represents in schematical sectional side view the exit zone of the steaming unit of the apparatus shown in FIGURE 1;
  • FIGURE 3 shows a sectional side view of the padding unit of the apparatus shown in FIGURE 1;
  • FIGURE 4 shows a schematical side view of an embodiment similar to that of FIGURES 1 and 2, but with somewhat different construction of the steaming unit;
  • FIGURE 5 shows in broken sectional side view a second embodiment of a padding unit in an apparatus according to the invention
  • FIGURE 6 shows in broken sectional view yet another embodiment of a padding unit in an apparatus according to the invention.
  • FIGURE 7 represents a top view of pusher means in the embodiment shown in FIG. 6.
  • FIGURE 3 only the discharge end of a conveyor belt 10, the other end of which (not shown) is connected to the above-mentioned spreading and mattress-forming devices.
  • the embodiment of the apparatus according to the invention comprises a chute 12 the lower edge of which is mounted in a cross bar 14.
  • the latter is disposed in front of and parallel with the contact zone of a pair of rollers 16 and 18 the axes of which are disposed one above the other in a substantially vertical plane, the rollers thus constituting a pad mangle.
  • Each of the rollers is provided on its surface with a coating 20, 22, respectively, of elastically resilient material such as rubber.
  • the pressure exercised by the two rollers 16 and 18 in the contact region 17 can be adjusted by changing the distance between the two rollers in the contact region 17, for instance by shifting the position of roller 18 in its vertical supporting columns, one of which is shown schematically at 11 and is provided with a hydraulic pressure device 13.
  • the cross bar 14 is provided with a longitudinal slot 15 through a reciprocating blade 24 acting as a pusher passes into close vicinity of the contact region 17 between rollers 16, 18, the plane in which the blade extends being substantially tangential to rollers 16 and 18 in that region.
  • Blade 24 is connected by means of connecting rods 25, 25 to excenter rings 26, 26 rotatably mounted on excenter discs 27, 27', respectively, which discs are in turn fixedly mounted on an excenter shaft 28 which is driven via transmission means 29 by a motor 23.
  • an impregnation liquor storage and feeding device 30 comprising a reservoir 31 which is filled up to a level controlled by an overflow tube (not shown) with an impregnation liquor, e.g., a dye liquor, bleaching liquor or optical brightening liquor or the like, which is fed into the reservoir through a feed pipe 33.
  • an impregnation liquor e.g., a dye liquor, bleaching liquor or optical brightening liquor or the like
  • Feeding device 30 further comprises a feed tank 32 to which the impregnation liquor is supplied from reservoir 31 through adjustable feed valves 34, 34'.
  • feed tank 32 In feed tank 32 there is provided an overflow 35 past which liquor flows down a weir plate 38, the lower edge of which is parallel to the axis of roller 18 and adjacent to the periphery of the latter, on the same side thereof on which the pusher blade 24 is located.
  • scraping and transporting means and 42 On the opposite side of rollers 16 and 18, i.e., on the discharge side of the pad mangle, there are arranged scraping and transporting means and 42, each of which preferably consists of guide rollers 41 about which there is mounted a conveyer belt 43, or 44, respectively, which consists preferably of a chain and lattice type.
  • the scraping means may consist of oscillating blades as shown schematically in FIGURE 3.
  • the conveyer belts of scraping and transporting means 40 and 42 contact the cylindrical walls of rollers 16 and 18, respectively, in a portion of their respective peripheries and scrape off any fibrous material adhering thereto after leaving the contact region 17.
  • Rollers 16 and 18 and the conveyor belts 43 and 44 rotate in the respective directions indicated by arrows.
  • nozzles 45 and 46 can be provided as shown in FIG- URE 3, through which nozzles compressed air is blown tangentially against the roller walls in the direction of rotation of the respective roller.
  • a trough-shaped vessel for gathering excess impregnation liquor dripping from that roller and from conveyor belt 43, as the case may be.
  • a pipe 56 which is provided with a pump (not shown) serves to pump excess liquor gathered in vessel 55 back into reservoir 31.
  • the steaming unit of the apparatus which comprises as essential parts a steam chamber having an entry opening at 61, as shown in FIGURE 1, and a discharge end at 62, which is shown in FIGURE 2.
  • the chamber 60 is housed in a heat-insulated casing 63.
  • a pair of conveyor rollers 50 and 51 which serve to close the said opening sufi'iciently so as to prevent the loss of undue amounts of steam from the steam chamber 60.
  • Guide rollers 50 and 51 have a contact region with each other through which impregnated material conveyed from the pad mangle (rollers 16 and 18) by conveyor belt 43 is fed into the interior of the steam chamber 60.
  • Nozzles 52 and 53 provided in the Wall of steam chamber 60 close to the rollers 50 and 51 serve for blowing steam into the chamber and are so positioned as to direct steam against and tangentially past these rollers.
  • a conveying device comprising a conveyor belt 66 and guide and drive rollers 67 whereby the conveyor belt 66 is actuated from a motor 70 shown in FIGURE 4.
  • a slanted plate 69 assists in directing the fibrous material onto the conveyor belt 66.
  • the conveyor belt 66 is disposed preferably at an upwardly inclined angle to end flush with the outlet opening 68.
  • a perforated steam inlet tube 72 which is in turn connected to a steam source (not shown).
  • a discharge duct is provided which duct communicates through outlet opening 68 with the steam chamber.
  • duct 80 is provided with a discharge opening 82 through which the steamed fiber material is discharged onto a conveyor belt 84 or the like conveying means. Escape of steam from the steam chamber 60 via duct 80 is prevented by a flap 86 which is hingedly mounted at 88 at the top rim of opening 82.
  • Flap 86 closes opening 82 at the beginning of the operation of the apparatus according to the invention and is pushed open by the weight of fibrous material descending through duct 80 just suificiently to permit the latter to leave the duct in a continuous manner, while still preventing any undue escape of steam through opening 82.
  • FIGURE 4 the discharge arrangement shown in FIGURE 2 is replaced by a pair of conveyor rollers 90, 91 between which the mass of steamed fibrous material is drawn out of steam chamber 60. Rollers 90 and 91 effectively prevent the escape of undue amounts of steam throughout outlet opening 68.
  • FIGURES 5 and 6 like reference numerals indicate the same parts as in FIGURE 1.
  • chute 12 is replaced by a curved plate 112 provided with a cavity 113 which opens at the lower edge of curved plate 112 and into which cavity a reciprocating pusher blade 115 is inserted.
  • chute 12 is replaced by a slanted plate 212 which guides fibrous material dropping off conveyor belt 10 onto a grid device 200 which consists of stationary grid bars 214 and movable grid bars 215 placed in interstices between grid bars 214.
  • the movable grid bars 215 are mounted by connecting members 216 and 217 on outer eccentric rings 218 and 219 which surround eccentric discs 220 and 221, respectively.
  • the latter are mounted on drive-shafts 222 and 223 which are driven by a motor (not shown).
  • the speed of rollers 16 and 18 is such that the film of impregnation liquor on roller 16 is not interrupted. This is achieved by regulating the speed of the motor (not shown) which drives the rollers, for instance by intercalation of a suitable variable transmission gear.
  • the squeezing effect on the impregnated fibers is such that about 80 to 180%, and still better, between 100 and 130% of liquor, calculated on the dry weight of the impregnated material, remain in the latter. This efiect is determined by the pressure exercised by the two rollers on the material.
  • Scraping devices 40 and 42 maintain the surfaces of rollers 16 and 1S clean and device 40 also lifts the mat B of impregnated and squeezed material from roller 16 and conveys it to guide rollers 50 and 51, which latter introduce it into the interior of the steaming chamber 60 practically free from squeezing effects, so that the liquor content of the material remains unchanged.
  • the mattress disintegrates and falls down onto conveyor 66, free from contact with any mechanical obstacles.
  • Saturated or slightly superheated steam is blown through orifices 52 and 53 in the direction toward the rollers 50 and 51 and blows oif any material adhering to these rollers; this steam instantaneously heats the cloud of falling material thoroughly to about 100 C., simultaneously causing a so-called blowing effect which increases the voluminosity of the material, depending on the presence of the necessary blowing agent.
  • the material gathers in large loose heaps on the conveyor belt 66 and is transported toward exit opening 68. While on the belt 66, it is exposed to the action of saturated or slightly superheated steam from steam inlet 72 which completes the fixation of the active substance or substances in the material introduced thereinto from the liquor.
  • the time of travel of the material on conveyor belt 66 and exposure to steam is controlled by adjustment of the rate of travel of the conveyor belt 66 so as to last for about 10 to 60 minutes, depending on the nature of the fiber material and the agents with which the latter has been impregnated.
  • the material then leaves the steaming chamber by way of duct 80, and is thereafter subjected to one or several after-treatments among which there may be rinsing once and preferably two or three times in water having a temperature between 30 and 80 C.
  • roller pair 16, 18 In addition to the roller pair 16, 18, one or several such pairs of rollers constituting a second, third or fourth etc. pad mangle can be interposed intermediate the first mangle and the guide rollers 50, 51.
  • Each of such additional pairs can be equipped with an impregnating liquor feeding assembly 30, so that it is possible to impregnate one and the same mattress of material with different agents successively.
  • An apparatus for the padding with an impregnation liquor and subsequent heat-treatment, in humid medium, of loose stock of fibrous material comprising:
  • said padding station comprising:
  • a pad mangle consisting of an upper and a lower pressure roller having a contact region therebetween, said pad mangle having an entry side to and an exit side from said contact region;
  • conveying means having a discharge end and being adapted for carrying a mattress of said loose fiber stock to the vicinity of said pad mangle on the entry side thereof, and there unloading said stock at a level substantially corresponding to that of said contact region;
  • said steaming station comprising (7) an elongated steam chamber having a feed opening in the upper portion thereof and a discharge opening at the end of said chamber opposite said feed opening;
  • steam injection means disposed inside said steam chamber near the feed opening thereof and adapted for directing steam into contact with the mat of fibrous material as it enters said steam chamber;
  • (11) means disposed in the lower portion of said steam chamber and adapted for introducing steam into the fibrous material which is being transported on said conveying means defined under (10);
  • a padding station containing a pad mangle consisting of an upper and a lower pressure roller having a contact region therebetween, said pad mangle having an entry side to and an exit side from said contact region;
  • conveying means having a discharge end and being adapted for carrying a mattress of said loose fiber stock to the vicinity of said pad mangle on the entry side thereof, and there unloading said stock at a level substantially corresponding to that of said contact region
  • (v) means disposed on the exit side of the pad mangle in contact with said upper and lower roller, and being adapted for scraping off loose stock adhering to said rollers, and for conveying a mat of compressed and impregnated fibrous material emerging on the exit side of said pad mangle from said contact region toward said steaming station.
  • said means as defined under (iv) are adapted for discharging said impregnation liquor in the upper quarter of the surface of said upper roller on the entry side of said pad mangle, and wherein said conveying means as defined under (i) comprise a stationary chute adapted for guiding a mattress of said loose stock sliding down said chute toward said pusher means at such an angle that the upper surface of said mattress comes into contact with said film on said upper roller prior to entering said contact region.
  • a slot is provided in said chute which slot is located substantially in a geometrical plane extending through said contact region which plane is practically tangential to both said upper and said lower rollers, and wherein said pusher means are in the form of an elongated blade which is disposed so that it extends parallel with said contact region, said blade being displaceably mounted in said slot.
  • an apparatus for the padding with an impregnation liquor and the subsequent heat-treatment in a humid medium, of loose stock of fibrous material comprising a padding station and a steaming station, said padding station having (1) a pad mangle consisting of an upper and a lower pressure roller having a contact region therebetween, said pad mangle having an entry and an exit side to and from said contact region;
  • steam injection means disposed inside said steam chamber near the feed opening thereof and adapted for directing steam into contact with said guiding means defined under (6), thereby heating the mat of fibrous material as it enters said steam chamber.
  • said steaming station further comprises:
  • (10) means for discharging the steamed fibrous material through said discharge opening from said steam chamber and simultaneously sealing said discharge opening of said steam chamber against substantial losses of steam from the latter.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
US555775A 1965-06-10 1966-06-07 Apparatus for padding and other subsequent treatment of loose stock textile fibers Expired - Lifetime US3466899A (en)

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IT1295165 1965-06-10

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CH (1) CH444799A (de)
GB (1) GB1127372A (de)
NL (1) NL6608108A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100311296A1 (en) * 2009-06-09 2010-12-09 Boehmer Brian E Dyed cellulose comminution sheet, dyed nonwoven material, and processes for their production

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111441701A (zh) * 2019-01-17 2020-07-24 杭州友普装饰材料有限公司 一种百叶窗叶片的生产系统及方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US675408A (en) * 1900-12-26 1901-06-04 Georges Peltzer Apparatus for degreasing wool.
US2340456A (en) * 1941-09-27 1944-02-01 Detroit Rex Products Company Attrition mill
US2552078A (en) * 1945-01-09 1951-05-08 Gen Dyestuff Corp Apparatus for dyeing and after treating fibers
US3314256A (en) * 1963-07-01 1967-04-18 Smith F & Co Whitworth Ltd Dyeing and similar liquid treatment of textile materials

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US675408A (en) * 1900-12-26 1901-06-04 Georges Peltzer Apparatus for degreasing wool.
US2340456A (en) * 1941-09-27 1944-02-01 Detroit Rex Products Company Attrition mill
US2552078A (en) * 1945-01-09 1951-05-08 Gen Dyestuff Corp Apparatus for dyeing and after treating fibers
US3314256A (en) * 1963-07-01 1967-04-18 Smith F & Co Whitworth Ltd Dyeing and similar liquid treatment of textile materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100311296A1 (en) * 2009-06-09 2010-12-09 Boehmer Brian E Dyed cellulose comminution sheet, dyed nonwoven material, and processes for their production

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CH444799A (de) 1967-10-15
NL6608108A (de) 1966-12-12
GB1127372A (en) 1968-09-18

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