US3872557A - Process for conditioning superficially dyed fabrics - Google Patents

Process for conditioning superficially dyed fabrics Download PDF

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US3872557A
US3872557A US311261A US31126172A US3872557A US 3872557 A US3872557 A US 3872557A US 311261 A US311261 A US 311261A US 31126172 A US31126172 A US 31126172A US 3872557 A US3872557 A US 3872557A
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fabric
threads
abrasion
superficially
abrasion means
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US311261A
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Jose Benzaquen
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BENZAQUEN INDUSTRIAL COMERCIAL IMMOBILIARIA Y FINANCIERA SA
Benzaquen SA Ind
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Benzaquen SA Ind
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Priority to US05/405,933 priority Critical patent/US3931427A/en
Priority to US05/547,179 priority patent/US4167600A/en
Priority to US05/547,178 priority patent/US4012815A/en
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06CFINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C11/00Teasing, napping or otherwise roughening or raising pile of textile fabrics
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06BTREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B11/00Treatment of selected parts of textile materials, e.g. partial dyeing
    • D06B11/0093Treatments carried out during or after a regular application of treating materials, in order to get differentiated effects on the textile material
    • D06B11/0096Treatments carried out during or after a regular application of treating materials, in order to get differentiated effects on the textile material to get a faded look

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  • the present invention relates to a method for conditioning fabrics. More particularly, the present invention relates to a process which-produces on alreadydyed fabrics, novel physical effects such as appearance and feel, as well as coloring and/or tone.
  • These discolored articles of clothing are generally made with fabrics wherein the yarn-is dyed substantially superficially, that is, they easily lose their coloring so that, due to washing and/or wearing out, they present the mentioned appearance of discoloration.
  • the present invention while it does cause the fabric to have a predetermined change in tone or color, does not involve an accidental, capricious or unforeseeable tone change and, at the same time, combines the tone effect with a plush or velvetlike finish.
  • the fabric thus produced in relation to the original characteristics of the base fabric, presents a notable improvement in regard to its visual appearance, as well as its feel or touch," since it has characteristics similar to suede.
  • the fabrics utilized in the present invention can be of various types in relation to the raw material, weaving and thickness used, since the process is readily adjustable in accordance with the type and characteristics of the base fabric.-However, thebest conditions and results are obtained when dealing with fabrics dyed superficially, particularly cotton fabrics and cotton blends.
  • Dyeings have also been obtained of the so-calle padozoic type as well as dyeings, whether of the warp threads, woof threads, or both together, with naphtholated bases.
  • the process of the invention is based on the realization of a superficial abrasion in a repeated or serial form by regulating the support tension of an abrasion means, the relative speed between the advance of the fabric and the abrasion means whose point size is also variable, as well as the superficial arc of contact, between the abrasion means and the fabric.
  • the lengthwise tension of the fabric is very important for the process in that the superficial abrasion is realized in a movment composed of the abrasion means and the advancing fabric, which notably improves the finished aspect of the fabric, since it eliminates the possibility of leaving streaks or scratches" in the plush while, at the same time, maintaining the deep structure of the yarn.
  • the process of the present invention is further improved by the injection of steam into the fabric. This makes it possible to accentuate the mentioned advantages of appearance and feel of the fabric obtained.
  • the process of the present invention is practiced over at least one of the faces of the fabric, in which there is effected a superficial abrasion by a movement made up of the advancing fabric, combined with a dampening with steam which notably improves its conditions.
  • this process can be practiced on ?printed fabrics, that is, base fabrics with the above described characteristics on which there has been formed a relief and which are later submitted to a superficial abrasion in the previously mentioned manner.
  • the resulting fabric has, in addition to the change in tone which is accentuated, a suede-like quality and an aspect of being tooled.
  • This process treats fabrics with yarns dyed in a substantially superficial form by accentuating its bi-tonality when the dyeing has been carried out only on the yarn in one direction,
  • a notable improvement is obtained in the characteristics of substantially coarse fabrics, such as canvas and denim and, in particular when the yarns of the base fabrics utilized have special, substantially high torsions which perferably tend, in the threads of the warp, and in those of the woof, to be approximately equal. Such torsions are calculated to avoid the ravelling of the threads, which keep their deep structure intact.
  • a machine which is basically symmetrical in form in relation to a transverse median plane of its operating means.
  • the means of abrasion are rotary mounted and are connected to the respective connecting rod-crankshaft mechanisms. This means that the abrasion means, in conjunction with their rotary movement, are displaced transversely to the direction of advance in a compound movement, said transverse displacement being determined by the speed of rotation.
  • the machine includes a novel device for regulating the fabric feeding rollers, thus achieving a highly efficient control of the lengthwise tension of advance of the fabric during the treatment.
  • roller regulating devices operate so that one of them constitutes the coiler of the treated fabric, that is the motor means of advance of the fabric and the similar one at the other end, loaded with the fabric to be treated, constitutes a means of pneumatic braking by regulatable friction. This friction regulation determines the greater or lesser lengthwise tension of the fabric during the treatment.
  • FIG. 1 is an elevational view in which the entire apparatus which can be used in the process of the present invention is shown in schematic form.
  • FlG.-2 is a partial view in detail, which shows, in section the specific mechanism of each one of the abrasion means which determines, in response to its rotary movement, the transverse oscillation of the mechanism.
  • FIG. 3 is a view of a lengthwise section of the regulating device for the winding and feeding means of the fabric.
  • FIG. 4 is an enlarged view of a partial section of the fabric obtained in the present process according to a parallel plane adjacent to a warp thread of the fabric.
  • FIG. 5 is a view similar to FIG. 4 showing only the section of the -warp thread.
  • FIG. 6 is an enlarged schematic view which shows a section of yarn dyed in superficial form and treated according to the process of the invention.
  • FIG. 7 is a view of the obverse side of the fabric treated according to the present invention with a corner folded over to show the reverse side.
  • Thisfabric corresponds to a base on which, prior to the treatment, relief designs have been imprinted.
  • FIGS. 7a and 7b are enlarged portions of opposite sides of the fabric as shown in circles 7a and 7b, respectively, in FIG. 7.
  • a machine to be utilized in the present invention has a support frame a and, in its upper part, a bell portion 1 of an aspiration mechanism.
  • the machine is represented schematically in side elevation and is substantially symmetrical with respect to a transverse median plane.
  • grinding cylinders 3 Transversely positioned along the course of the fabric. Between the guide rollers are positioned grinding cylinders 3 which comprise the preferred means for abrasion of the fabric. The size of the grains on the surface of cylinders 3 can be varied.
  • Grinding cylinders 3 which rotate in the direction of movement of the fabric through the machine, are powered by the respective motors 4 mounted over the cylinders.
  • Wheels 5 may be provided to regulate pressure and speed of the cylinders by way of suitable control linkages (not shown). Also regulated is the lengthwise tension 'of the fabric as it passes through the apparatus.
  • the relative height of the grinding cylinders 3 with respect to the guide rollers 2 between which they are located may also be regulated by mechanisms (not shown), but within the selection of one skilled in the art.
  • the holding arc of the fabric over the surface of the grinding cylinders 3, as well as the pressure of the grinding cylinders on the fabric may be regulated as the fabric advances.
  • rollers 6 At both ends of the machine, on a plane below the position of the guide rollers, are mounted rollers 6 which are connected by a suitable transmission to an assembly which carries the main motor m and speed regulator v. Also connected to the assembly by braces are respective winders c and c positioned at each end of the entire assembly.
  • the machine also includes a steam installation including pipes 7 placed transversely at both ends of the fabric path as it passes through the apparatus. Additional steam pipes 8 are also placed transversely along the fabric path between the guide rollers 2.
  • pipes 7 and 8 are combined with deflecting screens 9.
  • the outlet spouts of the pipes are distributed along the length of pipes 7 and 8 with the spouts directed toward screens 9.
  • Pipes'7 and 8 each have independent control means which permit perfect regulation of the dampening of the fabric in the process.
  • the grinding cylinders 3 are adapted to provide simultaneously with their rotary movement in the direction of fabric motion, a transverse oscillation. This is shown in FIG. 2 wherein axles 10 have protruding ends which carry a rim of endless threads 11 in which respective sprockets 12 coact. Each sprocket 12 is eccentrically jointed or articulated at 13 with the end of a connecting-rod arm 14 whose opposite end is, in turn, articulated at 15 at a fixed point of frame a.
  • the assembly of threaded rim 11 and sprocket 12 is locatedinside a box 16, which is mounted over the axle 10.
  • Axle 10 has a free rotation with respect to box 16 but is fixed in relation to axial displacement.
  • the sprocket 12 is permanently geared with the threaded rim 11 which causes it to rotate and, as the terminal 15 of the connecting rod 14 is articulated at a fixed point, the displacement of the opposite end 13 of rod 14, excentrically articulated on sprocket 12, forces the displacement, with respect to said fixed point 15, of the assembly comprising axle l0, endless thread rim 11, wheel 12 and box 16 in the orbit indicated by the arrows in FIG. 2.
  • the winders c and c are located at both ends of the machine as indicated schematically in FIG. 1.
  • Each of the winders has a respective regulating device as shown in FIG. 3, enclosed in a case positioned at the end 17 of an axle whose opposite, extended end comprises a means for mounting the winding rod, and which is in conjunction with the regulating device.
  • This axle is mounted on bearings 19 and carries, at 20, the nucleus of a ring-shaped piece 21 with a friction surface or coupling patch, facing a symmetrical, ringlike piece 23, also with a friction surface 22, which is mounted with its nucleus 24, in the form of a collar or sleeve, axially displaceable over the mentioned axle through a drive ring 25 mounted on bearings 26.
  • the facing piece 21 is in a fixed position on the axle and the facing piece 23 is axially displaceable thereover. Between the friction surfaces 22 of the facing pieces 21 and 23 is displaceably located a plate or sprocket 27 which receives, by means of a transmission passing through an opening of the body (1 (not illustrated) motive power.
  • the toothed plate transmission can be connected by means of a chain, gears or any other adequate form of transmission, to the source of the motive power.
  • a pressure-regulating valve f which is complemented with a manometer.
  • Valvef is controllable or adjustable from outside of the box e by a manual activating handle 29.
  • the pressurized air is regulated by valve f and passes through a three-way valve 3, controlled or adjusted by an adjusting member 30, which is in communication with the inlet 31 of a pneumatic microcylinder 32.
  • the piston of cylinder 32 is connected to the drive ring 25, as can be seen in the mentioned FIG. 3.
  • FIG. 3 arrows show the entrance of the pressurized air into the regulating device, to the control valve g and from this, by means of an appropriate valves and/or conduits (not shown) to the pneumatic microcylinder 32.
  • the valve f regulates the air pressure in the device, while the three-way control valve 3 communicates with the microcylinder 32, blocks theregulating valvefand discharges microcylinder 32.
  • the toothed plate 27 is moved or rotated by an outside transmission and, when the device is in the position illustrated in FIG. 3, it rotates freely with respect to the axle over whose end 17 the plate is mounted.
  • the cylinder piston drives the ring 25 forward and, with it, the nucleus piece 24 and its ring-shaped portion 23, and friction surface 22 (comprising Ferodo or other similar brake lining material) is pressed against the side of toothed plate 27 and causes the opposite side of plate 27 to be pressed against the friction surface 22of ring'shaped piece 21.
  • plate 27 is being contacted in coupling between friction surfaces 22.
  • the exact pressure is regulated by means of valvef.
  • the fabric winding rod is connected in the terminal 18 of the device.
  • the speed of the axle is regulated by means of the air pressure which, as has been said, determines the amount of slippage due to the friction between patches 22 and the toothed plate 27.
  • the mechanism for transmission of movement to the plate 27 is blocked and the air pressure regulates the braking effect by friction of the control device and, with it, the lengthwise tension of the fabric is regulated.
  • the process for conditioning the fabric is based, on submitting a fabric with threads, whether they be of warp, of woof, or both together, dyed in a substantially superficial manner, to a superficial abrasion based on a combination of relative movement between the fabric and the abrasion means thereby producing a superficial loosening of the fibers. This causes a predetermined discoloration and/or change of tone with a simultaneous plushing of the fabric, without affecting the deep structure of the yarn.
  • the object of the abrasion applied to the fabric is the loosening" of the superficially dyed fibers of the threads and to only raise the fibrils of these threads to provoke a variation of the coloration and/or tone of the fabric, as well as plushing" the surface of the fabric and eliminating therefrom a minimum of fiber or fiber particles.
  • This condition of minimum napping is verifled by observing the aspiration device, whose charge is minimal and which does not require very frequent emptying bacause of the relatively small amount of fuzz collected in it.
  • the process is practiced under very controlled regulated conditions, wherein during the passage of the fabric through the process, the least lengthwise tension possibleis imposed on the moving fabric thereby causing the fabric to be re-wound very evenly and avoiding variations in the width of the fabric.
  • a threading device is used to aid in avoiding variations in the fabric width.
  • the grinding cylinders 3 supported over the fabric rotate at a peripheral velocity out of phase with that of the advancing fabric and are simultaneously displaced in an oscillating movement transverse to the direction of advance to obtain a superficial loosening of fibers over the entire surface in a combined movement, thus eliminating the possibility of forming lengthwise scratches or streaks in the fabric.
  • the superficial abrasion causes discoloration and/r change of tone in the fabric in an even and predetermined form and, simultaneously, a plushing of its surface.
  • the treated fabric is particularly characterized as having warp threads and woof threads of a substantially low number count i.e., the number of hanks of 840 yards contained in a single English pound of yarn.
  • Preferred yarns have a number of about 6-16 for a single thread yarn and its equivalent for yarns of two or more twisted threads.
  • at least the warp threads have a substantially high torsion.
  • the process is particularly improved by carrying it out under conditions of controlled dampening. This is accomplished bycontrolled amounts of steam passing through pipes 7 and 8. This reduces or eliminates the possibility that the fibers of the fabric will become charged with static electricity. Further, the swelling of the fibers obtained upon exposure to steam favors the abrasion treatment and makes possible a reduction in the number of passes to which the fabric is submitted.
  • FIGS. 4 to 7 A type of fabric is illustrated in detail, as an example, in FIGS. 4 to 7.
  • This fabric is a cotton cloth, twill 3X1, whose threads of the warp identified with the letter 11, are dyed in substantially superficial form, whereas the woof threads 1' are not dyed.
  • the abrasion treatment causes a raising of fibrils 33 and 34 which, upon becoming mixed together, produce a change in the tonality of the fabric.
  • a method for conditioning fabric including coarse fabrics, denims and cottons, which comprise the steps of:
  • said moving fabric characterized in having a substantially low longitudinal tension
  • the velocity of the fabric and the abrasion means being different; and v. the contact area between the fabric surface and the abrasion means being substantially small to provide a fabric having a change in tonality and a plush surface without damaging the basic fiber structure of said superficially dyed fibers.
  • a method as in claim 1 which includes dampening the fabric with steam prior to contacting the fabric with the abrasion means.
  • said fabric comprises superficially dyed base threads in which the warp and woof threads have a low yarn number and in which at least the warp threads have a substantially high torsion.

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  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
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  • Treatment Of Fiber Materials (AREA)

Abstract

Pleasing tonality is obtained in a fabric by subjecting a moving, superficially dyed fabric to abrasion. The fabric, while being processed, has a low longitudinal tension and the peripheral velocity of the abrasion means is different than the moving fabric.

Description

United States Patent [191 Benzaquen [451 Mar. 25, 1975 1 PROCESS FOR CONDITIONING SUPERFICIALLY DYED FABRICS [75] Inventor: JoseBenzaquemCaseros,Argentina [73] Assignee: Benzaquen,S0ciedad Anonima,
Industrial, Comercial, Immobiliaria y Financiera, Buenos Aires, Argentina 22 Filed: Dec. 1, 1972 21 Appl. No.: 311,261
[30] Foreign Application Priority Data June 12, 1972 Argentina 242496 Aug. 8, 1972 Argentina 243491 Aug. 8, 1972 Argentina 243492 Aug. 10, 1972 Argentina 243533 [52] US. Cl. 26/28, 68/6 [51] Int. Cl. D06C 11/00 [58] Field of Search 26/28; 68/6 [56] References Cited UNITED STATES PATENTS 124,481 3/1872 Brown 68/6 427,069 5/1890 Gessner 68/6 1,917,555 7/1933 ShUIUCWOI'Ih 26/28 X 2,053,778 /1936 Platt 26/28 3,068,544 12/1962 Connell et a1. 26/28 3,523,346 8/1970 Bolen Ct 211 .1 26/28 X 3,553,801 1/1971 Hadley 26/28 Primary Examiner-Robert R. Mackey [57] ABSTRACT Pleasing tonality is obtained in a fabric by subjecting a moving, superficiallydyed fabric to abrasion. The fabric, while being processed, has a low. longitudinal tension and, the peripheral velocity of the abrasion means is different than the moving fabric.
7 Claims, 9 Drawing Figures PROCESS FOR CONDITIONING SUPERFICIALLY DYED FABRICS BACKGROUND OF THE INVENTION The present invention relates to a method for conditioning fabrics. More particularly, the present invention relates to a process which-produces on alreadydyed fabrics, novel physical effects such as appearance and feel, as well as coloring and/or tone.
The clothing industry produces articles which have the publicized peculiarity of random discolor," that is, as a result of wear or special washings they present a premature aging appearance.
These discolored articles of clothing are generally made with fabrics wherein the yarn-is dyed substantially superficially, that is, they easily lose their coloring so that, due to washing and/or wearing out, they present the mentioned appearance of discoloration.
The present invention, on the other hand, while it does cause the fabric to have a predetermined change in tone or color, does not involve an accidental, capricious or unforeseeable tone change and, at the same time, combines the tone effect with a plush or velvetlike finish. The fabric thus produced, in relation to the original characteristics of the base fabric, presents a notable improvement in regard to its visual appearance, as well as its feel or touch," since it has characteristics similar to suede.
The fabrics utilized in the present invention can be of various types in relation to the raw material, weaving and thickness used, since the process is readily adjustable in accordance with the type and characteristics of the base fabric.-However, thebest conditions and results are obtained when dealing with fabrics dyed superficially, particularly cotton fabrics and cotton blends.
There are also known fabrics called indigo type because this constitutes their coloration base. This coloration is preferably realized on the warp threads. However, the woof threads may also be dyed in a superficial form. I t
Dyeings have also been obtained of the so-calle padozoic type as well as dyeings, whether of the warp threads, woof threads, or both together, with naphtholated bases.
SUMMARY OF THE INVENTION An innovation for obtaining superficial dyeing of the yarn in fabrics has been based on the prior priming or gluing of the yarn and later dyeing the yarn with, for example, naphtholated bases. The prior priming forms a laminate shield around the thread which causes the color fixing on the thread to be superficial, without affecting the nucleus of the thread. The prior primed fabrics, whatever may be the exact form used for dyeing the fabric or the materials employed, are submitted to the process in question to obtain a textile fabric which presents a predetermined change of tone and/or color with a simultaneous plush or velvet-like-finish.
There are known fabrics, especially cotton, in which,
'by a process of shagging, a greater bulk is given to the fabric. This known shagging process is based on submitting the base fabric to the action of welts, formed by ably, the separated fibers are of substantial length. However, this type of treatment affects the deep structure of the yarn. In addition, in order to obtain the desired effect, it is necessary to work on yarns of low torsion.
The process of the invention, on the other hand, is based on the realization of a superficial abrasion in a repeated or serial form by regulating the support tension of an abrasion means, the relative speed between the advance of the fabric and the abrasion means whose point size is also variable, as well as the superficial arc of contact, between the abrasion means and the fabric. The lengthwise tension of the fabric is very important for the process in that the superficial abrasion is realized in a movment composed of the abrasion means and the advancing fabric, which notably improves the finished aspect of the fabric, since it eliminates the possibility of leaving streaks or scratches" in the plush while, at the same time, maintaining the deep structure of the yarn.
The process of the present invention is further improved by the injection of steam into the fabric. This makes it possible to accentuate the mentioned advantages of appearance and feel of the fabric obtained.
It is already known that in a dry environment, textile fibers become charged with static electricity which causes the raised fibrils of the fabric to repel one another, that is, they tend to separate. In a humid environment, on the other band, due to the absence or lessening of the static charge, the hair or fibrils tend to become flattened. This results in different superficial abrasion on the fabric and produces special effects. In addition, the humidity produces swelling of the fibers, which notably improves the suede-like effect obtained by the abrasion.
Thus, the process of the present invention is practiced over at least one of the faces of the fabric, in which there is effected a superficial abrasion by a movement made up of the advancing fabric, combined with a dampening with steam which notably improves its conditions.
it should also be noted that this process can be practiced on ?printed fabrics, that is, base fabrics with the above described characteristics on which there has been formed a relief and which are later submitted to a superficial abrasion in the previously mentioned manner. The resulting fabric has, in addition to the change in tone which is accentuated, a suede-like quality and an aspect of being tooled. This process treats fabrics with yarns dyed in a substantially superficial form by accentuating its bi-tonality when the dyeing has been carried out only on the yarn in one direction,
that is, either those of the warp or those of the woof.
A notable improvement is obtained in the characteristics of substantially coarse fabrics, such as canvas and denim and, in particular when the yarns of the base fabrics utilized have special, substantially high torsions which perferably tend, in the threads of the warp, and in those of the woof, to be approximately equal. Such torsions are calculated to avoid the ravelling of the threads, which keep their deep structure intact.
To achieve these operations, a machine has been designed which is basically symmetrical in form in relation to a transverse median plane of its operating means.
The means of abrasion are rotary mounted and are connected to the respective connecting rod-crankshaft mechanisms. This means that the abrasion means, in conjunction with their rotary movement, are displaced transversely to the direction of advance in a compound movement, said transverse displacement being determined by the speed of rotation.
In addition, the machine includes a novel device for regulating the fabric feeding rollers, thus achieving a highly efficient control of the lengthwise tension of advance of the fabric during the treatment. These roller regulating devices operate so that one of them constitutes the coiler of the treated fabric, that is the motor means of advance of the fabric and the similar one at the other end, loaded with the fabric to be treated, constitutes a means of pneumatic braking by regulatable friction. This friction regulation determines the greater or lesser lengthwise tension of the fabric during the treatment.
The remaining advantages and characteristics of the invention can be appreciated by reference to the various figures in which a preferred embodiment of the machine mentioned is illustrated and represented.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an elevational view in which the entire apparatus which can be used in the process of the present invention is shown in schematic form.
FlG.-2 is a partial view in detail, which shows, in section the specific mechanism of each one of the abrasion means which determines, in response to its rotary movement, the transverse oscillation of the mechanism.
FIG. 3 is a view of a lengthwise section of the regulating device for the winding and feeding means of the fabric.
FIG. 4 is an enlarged view of a partial section of the fabric obtained in the present process according to a parallel plane adjacent to a warp thread of the fabric.
FIG. 5 is a view similar to FIG. 4 showing only the section of the -warp thread.
FIG. 6 is an enlarged schematic view which shows a section of yarn dyed in superficial form and treated according to the process of the invention.
FIG. 7 is a view of the obverse side of the fabric treated according to the present invention with a corner folded over to show the reverse side. Thisfabric corresponds to a base on which, prior to the treatment, relief designs have been imprinted.
FIGS. 7a and 7b are enlarged portions of opposite sides of the fabric as shown in circles 7a and 7b, respectively, in FIG. 7.
DETAILED DESCRIPTION OF THE DRAWINGS In the various figures, the equal or equivalent parts have been indicated with similar reference characters.
As can be seen in FIG. 1, a machine to be utilized in the present invention has a support frame a and, in its upper part, a bell portion 1 of an aspiration mechanism.
In the illustration, the machine is represented schematically in side elevation and is substantially symmetrical with respect to a transverse median plane.
Transversely positioned along the course of the fabric. Between the guide rollers are positioned grinding cylinders 3 which comprise the preferred means for abrasion of the fabric. The size of the grains on the surface of cylinders 3 can be varied.
Grinding cylinders 3 which rotate in the direction of movement of the fabric through the machine, are powered by the respective motors 4 mounted over the cylinders. Wheels 5 may be provided to regulate pressure and speed of the cylinders by way of suitable control linkages (not shown). Also regulated is the lengthwise tension 'of the fabric as it passes through the apparatus. The relative height of the grinding cylinders 3 with respect to the guide rollers 2 between which they are located may also be regulated by mechanisms (not shown), but within the selection of one skilled in the art. Thus, the holding arc of the fabric over the surface of the grinding cylinders 3, as well as the pressure of the grinding cylinders on the fabric may be regulated as the fabric advances.
At both ends of the machine, on a plane below the position of the guide rollers, are mounted rollers 6 which are connected by a suitable transmission to an assembly which carries the main motor m and speed regulator v. Also connected to the assembly by braces are respective winders c and c positioned at each end of the entire assembly.
The machine also includes a steam installation including pipes 7 placed transversely at both ends of the fabric path as it passes through the apparatus. Additional steam pipes 8 are also placed transversely along the fabric path between the guide rollers 2.
So that there will be no direct flow of steam onto the fabric and for a better distribution of the steam on the fabric, pipes 7 and 8 are combined with deflecting screens 9. In this combination, the outlet spouts of the pipes are distributed along the length of pipes 7 and 8 with the spouts directed toward screens 9.
Pipes'7 and 8 each have independent control means which permit perfect regulation of the dampening of the fabric in the process.
The grinding cylinders 3 are adapted to provide simultaneously with their rotary movement in the direction of fabric motion, a transverse oscillation. This is shown in FIG. 2 wherein axles 10 have protruding ends which carry a rim of endless threads 11 in which respective sprockets 12 coact. Each sprocket 12 is eccentrically jointed or articulated at 13 with the end of a connecting-rod arm 14 whose opposite end is, in turn, articulated at 15 at a fixed point of frame a.
The assembly of threaded rim 11 and sprocket 12 is locatedinside a box 16, which is mounted over the axle 10. Axle 10 has a free rotation with respect to box 16 but is fixed in relation to axial displacement.
As can be appreciated in FIG. 2, the sprocket 12 is permanently geared with the threaded rim 11 which causes it to rotate and, as the terminal 15 of the connecting rod 14 is articulated at a fixed point, the displacement of the opposite end 13 of rod 14, excentrically articulated on sprocket 12, forces the displacement, with respect to said fixed point 15, of the assembly comprising axle l0, endless thread rim 11, wheel 12 and box 16 in the orbit indicated by the arrows in FIG. 2. This impresses on the grinding cylinder 3, in response to its rotary movement, a transverse oscillation in relation to the fabric as its advances simultaneous with the rotation of the cylinder.
The winders c and c are located at both ends of the machine as indicated schematically in FIG. 1. Each of the winders has a respective regulating device as shown in FIG. 3, enclosed in a case positioned at the end 17 of an axle whose opposite, extended end comprises a means for mounting the winding rod, and which is in conjunction with the regulating device.
This axle is mounted on bearings 19 and carries, at 20, the nucleus of a ring-shaped piece 21 with a friction surface or coupling patch, facing a symmetrical, ringlike piece 23, also with a friction surface 22, which is mounted with its nucleus 24, in the form of a collar or sleeve, axially displaceable over the mentioned axle through a drive ring 25 mounted on bearings 26.
The facing piece 21 is in a fixed position on the axle and the facing piece 23 is axially displaceable thereover. Between the friction surfaces 22 of the facing pieces 21 and 23 is displaceably located a plate or sprocket 27 which receives, by means of a transmission passing through an opening of the body (1 (not illustrated) motive power. The toothed plate transmission can be connected by means of a chain, gears or any other adequate form of transmission, to the source of the motive power.
In a box e fixed to the body d, which has an inlet 28 for connection to a source of air under pressure (not illustrated), there is located a pressure-regulating valve f, which is complemented with a manometer. Valvefis controllable or adjustable from outside of the box e by a manual activating handle 29. The pressurized air is regulated by valve f and passes through a three-way valve 3, controlled or adjusted by an adjusting member 30, which is in communication with the inlet 31 of a pneumatic microcylinder 32. The piston of cylinder 32 is connected to the drive ring 25, as can be seen in the mentioned FIG. 3.
The operating characteristics of these valves are not shown in detail, along with the details of the microcylinder, because they are conventional and well known to the art.
In FIG. 3 arrows show the entrance of the pressurized air into the regulating device, to the control valve g and from this, by means of an appropriate valves and/or conduits (not shown) to the pneumatic microcylinder 32.
The valve f regulates the air pressure in the device, while the three-way control valve 3 communicates with the microcylinder 32, blocks theregulating valvefand discharges microcylinder 32.
The toothed plate 27 is moved or rotated by an outside transmission and, when the device is in the position illustrated in FIG. 3, it rotates freely with respect to the axle over whose end 17 the plate is mounted.
When the pressurized air passes to the microcylinder 32, the cylinder piston drives the ring 25 forward and, with it, the nucleus piece 24 and its ring-shaped portion 23, and friction surface 22 (comprising Ferodo or other similar brake lining material) is pressed against the side of toothed plate 27 and causes the opposite side of plate 27 to be pressed against the friction surface 22of ring'shaped piece 21. Thus, plate 27 is being contacted in coupling between friction surfaces 22. The greater the pressure on the microcylinder 32 through the pneumatic system of the regulating device, the greater will be the pressure and the smaller the slippage between the plate 27 and the friction surfaces 22 of the ring-shaped pieces 21 and 23. The exact pressure is regulated by means of valvef. The fabric winding rod is connected in the terminal 18 of the device.
To uncouple toothed plate 27, it is sufficient, by means of operating valve g, to block regulating valve f, and discharge the pneumatic microcylinder 32, whereby plate 27 is allowed to rotate independently over the end 17 of the axle. Given the pneumatic characteristics of'the activation means, the coupling as well as the uncoupling are effected elastically.
In the operation for winding the fabric, the speed of the axle is regulated by means of the air pressure which, as has been said, determines the amount of slippage due to the friction between patches 22 and the toothed plate 27. In the same manner, in feeding the fabric to the machine, the mechanism for transmission of movement to the plate 27 is blocked and the air pressure regulates the braking effect by friction of the control device and, with it, the lengthwise tension of the fabric is regulated.
The process for conditioning the fabric is based, on submitting a fabric with threads, whether they be of warp, of woof, or both together, dyed in a substantially superficial manner, to a superficial abrasion based on a combination of relative movement between the fabric and the abrasion means thereby producing a superficial loosening of the fibers. This causes a predetermined discoloration and/or change of tone with a simultaneous plushing of the fabric, without affecting the deep structure of the yarn.
As has been expressed before, this process must be practiced under predetermined conditions, in accordance with the type and characteristics of the fabric to be treated.
The object of the abrasion applied to the fabric is the loosening" of the superficially dyed fibers of the threads and to only raise the fibrils of these threads to provoke a variation of the coloration and/or tone of the fabric, as well as plushing" the surface of the fabric and eliminating therefrom a minimum of fiber or fiber particles. This condition of minimum napping is verifled by observing the aspiration device, whose charge is minimal and which does not require very frequent emptying bacause of the relatively small amount of fuzz collected in it.
The process is practiced under very controlled regulated conditions, wherein during the passage of the fabric through the process, the least lengthwise tension possibleis imposed on the moving fabric thereby causing the fabric to be re-wound very evenly and avoiding variations in the width of the fabric. In the initial winding, a threading device is used to aid in avoiding variations in the fabric width.
In addition, there must be-maintained a substantially small contact surface between the abrasion means and the fabric under treatment. That is, the arc of movement of each grinding cylinder 3, over the fabric, should not be very broad, which means the arc should be adapted to the diameter of grinding cylinder 3 and the pressure of the cylinder on the fabric toobtain the desired condition of small contact surface. The difference in speeds between the advancing fabric and the peripheral velocity of the grinding cylinders 3 is also regulated to make it possible to-insure the development of the previously mentioned characteristics in the resulting product.
It is evident that a repetition of the specific treatment mentioned, as well as the dimensions of the grains of the surfaces on the abrasion means, are established in proportion to the characteristics of the fabric to be treated, that is, the thickness, weight, and type of threads making up the fabric.
As the fabric advances through the treatment, the grinding cylinders 3 supported over the fabric rotate at a peripheral velocity out of phase with that of the advancing fabric and are simultaneously displaced in an oscillating movement transverse to the direction of advance to obtain a superficial loosening of fibers over the entire surface in a combined movement, thus eliminating the possibility of forming lengthwise scratches or streaks in the fabric. Given the characteristics of the dye used in the fabric, such superficial abrasion causes discoloration and/r change of tone in the fabric in an even and predetermined form and, simultaneously, a plushing of its surface.
The treated fabric is particularly characterized as having warp threads and woof threads of a substantially low number count i.e., the number of hanks of 840 yards contained in a single English pound of yarn. Preferred yarns have a number of about 6-16 for a single thread yarn and its equivalent for yarns of two or more twisted threads. In addition, at least the warp threads have a substantially high torsion.
The process is particularly improved by carrying it out under conditions of controlled dampening. This is accomplished bycontrolled amounts of steam passing through pipes 7 and 8. This reduces or eliminates the possibility that the fibers of the fabric will become charged with static electricity. Further, the swelling of the fibers obtained upon exposure to steam favors the abrasion treatment and makes possible a reduction in the number of passes to which the fabric is submitted.
A type of fabric is illustrated in detail, as an example, in FIGS. 4 to 7. This fabric is a cotton cloth, twill 3X1, whose threads of the warp identified with the letter 11, are dyed in substantially superficial form, whereas the woof threads 1' are not dyed. The abrasion treatment causes a raising of fibrils 33 and 34 which, upon becoming mixed together, produce a change in the tonality of the fabric.
As shown in FIG. 6, a transverse section of a warp thread, superficially dyed and indicated with h, the outer threads of the thread have color (cross hatched) while those threads in the nucleus are undyed. It is also possible to find intermediate threads that are partially colored (lined), as indicated in FIG. 6. The effect of the superficial abrasion causes a raising of fibrils 33 which,
on becoming mixed, and without affecting the deep structure of the yarn, produce the change of tonality as previously noted. The surface of the treated fabric then has a bi-tonal effect.
It is unquestionable that on being carried into practice, the present invention can have introduced into it modifications with regard to certain details without any deviation from the fundamental principles which are clearly specified in the following claims.
I claim as my invention:
1. A method for conditioning fabric, including coarse fabrics, denims and cottons, which comprise the steps of:
i. continuously moving a length of said fabric comprising substantially superficially dyed fibers;
ii. said moving fabric characterized in having a substantially low longitudinal tension;
iii. contacting the surface of said fabric with a plurality of simultaneously rotating and transversely moving abrasion means to loosen and superficially raise the fibrils of said fabric in response to the simultaneous rotation and transverse movement of the abrasion means and with a minimum removal of fiber or fiber particles;
iv. the velocity of the fabric and the abrasion means being different; and v. the contact area between the fabric surface and the abrasion means being substantially small to provide a fabric having a change in tonality and a plush surface without damaging the basic fiber structure of said superficially dyed fibers.
2. A method as in claim 1 wherein the abrasion means rotate in the direction of the moving fabric.
3. A method as in claim 1 which includes dampening the fabric with steam prior to contacting the fabric with the abrasion means.
4. A method as in claim 3 wherein the fabric is contacted with controlled, indirect steam along its entire length during said process.
5. The method of claim 1 wherein said fabric comprises superficially dyed base threads in which the warp and woof threads have a low yarn number and in which at least the warp threads have a substantially high torsion.
6. The method of claim 5 wherein said threads have a number in the range of about 6-16.
7. The method of claim 1 wherein the fabric includes an imprinted relief pattern thereon.

Claims (7)

1. A method for conditioning fabric, including coarse fabrics, denims and cottons, which comprise the steps of: i. continuously moving a length of said fabric comprising substantially superficially dyed fibers; ii. said moving fabric characterized in having a substantially low longitudinal tension; iii. contacting the surface of said fabric with a plurality of simultaneously rotating and transversely moving abrasion means to loosen and superficially raise the fibrils of said fabric in response to the simultaneous rotation and transverse movement of the abrasion means and with a minimum removal of fiber or fiber particles; iv. the velocity of the fabric and the abrasion means being different; and v. the contact area between the fabric surface and the abrasion means being substantially small to provide a fabric having a change in tonality and a plush surface without damaging the basic fiber structure of said superficially dyed fibers.
2. A method as in claim 1 wherein the abrasion means rotate in the direction of the moving fabric.
3. A method as in claim 1 which includes dampening the fabric with steam prior to contacting the fabric with the abrasion means.
4. A method as in claim 3 wherein the fabric is contacted with controlled, indirect steam along its entire length during said process.
5. The method of claim 1 wherein said fabric comprises superficially dyed base threads in which the warp and woof threads have a low yarn number and in which at least the warp threads have a substantially high torsion.
6. The method of claim 5 wherein said threads have a number in the range of about 6-16.
7. The method of claim 1 wherein the fabric includes an imprinted relief pattern thereon.
US311261A 1972-06-12 1972-12-01 Process for conditioning superficially dyed fabrics Expired - Lifetime US3872557A (en)

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Application Number Priority Date Filing Date Title
US05/405,933 US3931427A (en) 1972-11-23 1973-10-12 Stamp dyed napped fabric
US05/547,179 US4167600A (en) 1972-12-01 1975-02-05 Superficially dyed fabrics
US05/547,178 US4012815A (en) 1972-12-01 1975-02-05 Apparatus for abrading fabrics

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AR24249672 1972-06-12
AR24349272 1972-08-08
AR24349172 1972-08-08
AR24353372 1972-08-10

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US05/405,933 Continuation-In-Part US3931427A (en) 1972-11-23 1973-10-12 Stamp dyed napped fabric
US05/547,178 Continuation-In-Part US4012815A (en) 1972-12-01 1975-02-05 Apparatus for abrading fabrics
US05/547,179 Division US4167600A (en) 1972-12-01 1975-02-05 Superficially dyed fabrics

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4316928A (en) * 1979-11-09 1982-02-23 Milliken Research Corporation Mechanically surface finished textile material
US4468844A (en) * 1979-11-09 1984-09-04 Milliken Research Corporation Mechanical surface finishing process for textile fabric
US4512065A (en) * 1979-11-09 1985-04-23 Milliken Research Corporation Mechanical surface finishing apparatus for textile fabric
WO1987007660A1 (en) * 1986-06-09 1987-12-17 Geller George R Method and apparatus for modifying fabrics to produce varied effects
FR2628762A1 (en) * 1988-03-18 1989-09-22 Saligny Claude Appts. for localised abrasive treatment of continuous moving fabric - to impart worn or washed appearance to e.g. fabrics for jeans
US4951366A (en) * 1989-02-07 1990-08-28 Geller George R Method for modifying fabrics to produce varied effects
EP0532479A1 (en) * 1991-09-13 1993-03-17 Officina Meccanica Biancalani & C. di Fiorenzo Biancalani & C. S.n.c. Machine and method for the abrasive treatment of fabrics
EP0665318A2 (en) * 1994-01-27 1995-08-02 SPEROTTO RIMAR S.p.A. Apparatus for the wet surface treatment of continuous textile materials
BE1009823A3 (en) * 1995-11-30 1997-09-02 Gevaert Bandweverij Naamloze V Method for creating an impression of faded colour on a surface dyed strip or a strip woven from surface dyed threads
US5815896A (en) * 1997-12-22 1998-10-06 Milliken Research Corporation Method and apparatus to provide improved and more efficient napping of fabrics made from spun yarns
WO1999001602A1 (en) * 1997-06-30 1999-01-14 Lafer S.P.A. Wet grinding method for textile material and relative device
WO2001016421A1 (en) * 1999-08-28 2001-03-08 Mageba Textilmaschinen Vertriebs-Gmbh Teaseling machine
WO2001063034A1 (en) * 2000-02-25 2001-08-30 H.T.P. S.R.L. Machine and process for decorative treatment by abrasion of fabrics and the like
US20040259750A1 (en) * 2002-04-22 2004-12-23 The Procter & Gamble Company Processes and apparatuses for applying a benefit composition to one or more fabric articles during a fabric enhancement operation
US20050011059A1 (en) * 2001-12-14 2005-01-20 Luigi Marcora Machine and method for processing textile fabrics

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2573128B2 (en) * 1992-10-09 1997-01-22 内外特殊染工株式会社 Fabric raising method and cloth raising device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US124481A (en) * 1872-03-12 Improvement in steam-cylinders for finishing cloth
US427069A (en) * 1890-05-06 Steam-box for dampening cloth
US1917555A (en) * 1931-10-21 1933-07-11 Howard L Shuttleworth Method of finishing carpets
US2053778A (en) * 1934-02-15 1936-09-08 Celanese Corp Treatment of textile fabrics
US3068544A (en) * 1959-07-15 1962-12-18 Palatine Dyeing Company Inc Improvements in the sueding of fabric
US3523346A (en) * 1967-12-07 1970-08-11 Canton Textile Mills Method for modifying the surface texturing of fabrics
US3553801A (en) * 1968-02-19 1971-01-12 Hadley Co Inc Fabric treating apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1171990A (en) * 1966-05-13 1969-11-26 Canton Textile Mills Mechanical Surface Texturing of Fabrics

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US124481A (en) * 1872-03-12 Improvement in steam-cylinders for finishing cloth
US427069A (en) * 1890-05-06 Steam-box for dampening cloth
US1917555A (en) * 1931-10-21 1933-07-11 Howard L Shuttleworth Method of finishing carpets
US2053778A (en) * 1934-02-15 1936-09-08 Celanese Corp Treatment of textile fabrics
US3068544A (en) * 1959-07-15 1962-12-18 Palatine Dyeing Company Inc Improvements in the sueding of fabric
US3523346A (en) * 1967-12-07 1970-08-11 Canton Textile Mills Method for modifying the surface texturing of fabrics
US3553801A (en) * 1968-02-19 1971-01-12 Hadley Co Inc Fabric treating apparatus

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4468844A (en) * 1979-11-09 1984-09-04 Milliken Research Corporation Mechanical surface finishing process for textile fabric
US4512065A (en) * 1979-11-09 1985-04-23 Milliken Research Corporation Mechanical surface finishing apparatus for textile fabric
US4316928A (en) * 1979-11-09 1982-02-23 Milliken Research Corporation Mechanically surface finished textile material
WO1987007660A1 (en) * 1986-06-09 1987-12-17 Geller George R Method and apparatus for modifying fabrics to produce varied effects
FR2628762A1 (en) * 1988-03-18 1989-09-22 Saligny Claude Appts. for localised abrasive treatment of continuous moving fabric - to impart worn or washed appearance to e.g. fabrics for jeans
US4951366A (en) * 1989-02-07 1990-08-28 Geller George R Method for modifying fabrics to produce varied effects
EP0532479A1 (en) * 1991-09-13 1993-03-17 Officina Meccanica Biancalani & C. di Fiorenzo Biancalani & C. S.n.c. Machine and method for the abrasive treatment of fabrics
EP0665318A3 (en) * 1994-01-27 1997-11-05 SPEROTTO RIMAR S.p.A. Apparatus for the wet surface treatment of continuous textile materials
EP0665318A2 (en) * 1994-01-27 1995-08-02 SPEROTTO RIMAR S.p.A. Apparatus for the wet surface treatment of continuous textile materials
BE1009823A3 (en) * 1995-11-30 1997-09-02 Gevaert Bandweverij Naamloze V Method for creating an impression of faded colour on a surface dyed strip or a strip woven from surface dyed threads
WO1999001602A1 (en) * 1997-06-30 1999-01-14 Lafer S.P.A. Wet grinding method for textile material and relative device
US5815896A (en) * 1997-12-22 1998-10-06 Milliken Research Corporation Method and apparatus to provide improved and more efficient napping of fabrics made from spun yarns
WO1999032702A1 (en) * 1997-12-22 1999-07-01 Milliken Research Corporation Method and apparatus to provide improved and more efficient napping of fabrics made from spun yarns
WO2001016421A1 (en) * 1999-08-28 2001-03-08 Mageba Textilmaschinen Vertriebs-Gmbh Teaseling machine
WO2001063034A1 (en) * 2000-02-25 2001-08-30 H.T.P. S.R.L. Machine and process for decorative treatment by abrasion of fabrics and the like
US20050011059A1 (en) * 2001-12-14 2005-01-20 Luigi Marcora Machine and method for processing textile fabrics
US20040259750A1 (en) * 2002-04-22 2004-12-23 The Procter & Gamble Company Processes and apparatuses for applying a benefit composition to one or more fabric articles during a fabric enhancement operation

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