EP0311897B1 - Verfahren und Vorrichtung zum kompressiven Schrumpfen von Schlauchwaren - Google Patents

Verfahren und Vorrichtung zum kompressiven Schrumpfen von Schlauchwaren Download PDF

Info

Publication number
EP0311897B1
EP0311897B1 EP88116535A EP88116535A EP0311897B1 EP 0311897 B1 EP0311897 B1 EP 0311897B1 EP 88116535 A EP88116535 A EP 88116535A EP 88116535 A EP88116535 A EP 88116535A EP 0311897 B1 EP0311897 B1 EP 0311897B1
Authority
EP
European Patent Office
Prior art keywords
fabric
roller
confining
retarding
feeding roller
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
EP88116535A
Other languages
English (en)
French (fr)
Other versions
EP0311897A1 (de
Inventor
William D. Milligan
Andrew P. Cecere
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.)
Compax Corp
Original Assignee
Compax Corp
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 Compax Corp filed Critical Compax Corp
Priority to AT88116535T priority Critical patent/ATE70863T1/de
Publication of EP0311897A1 publication Critical patent/EP0311897A1/de
Application granted granted Critical
Publication of EP0311897B1 publication Critical patent/EP0311897B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C17/00—Fulling
    • D06C17/02—Fulling by rollers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C5/00—Shaping or stretching of tubular fabrics upon cores or internal frames
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C21/00—Shrinking by compressing

Definitions

  • the invention is directed to improved methods and apparatus for the compressive shrinkage of fabrics.
  • the invention is applicable to particular advantage to the treatment of tubular knitted fabrics, but is not to be considered as limited thereto, as the principles of the invention are useful to advantage in connection with the processing of open width fabrics of both knitted and non-knitted construction.
  • the second roller forms a nip with the feeding roller, such that fabric, after it exits from the confining shoe, is engaged under pressure simultaneously between the feeding and retarding rollers.
  • the retarding roller which is driven at a surface speed controllably slower than the surface speed of the feeding roller, retards the advance of the fabric, so that controlled lengthwise compression of the fabric takes place in a short compressive shrinking zone formed between the roller nip and the terminating edge of the fabric confining shoe.
  • the shoe and/or rollers desirably are heated, such that the emerging fabric retains a substantial portion, at least, of the compressive shrinkage imparted thereto in the compressive shrinkage zone.
  • a compressive pre-shrinking apparatus for knitted fabrics and the like as defined in the pre-characterising portion of claim 1 is also disclosed in EP-A 0 144 526, the apparatus comprising a fabric feeding roller, an entry-side fabric confining shoe generally conforming to a surface portion of said feeding roller and defining therewith a confined entry path for the controlled advancement of fabric by said feeding roller, means for adjustably relatively positioning said entry-side confining shoe and fabric feeding roller to bear with limited controlled pressure upon fabric confined in said entry path, a fabric retarding roller mounted for rotation closely adjacent and parallel to said feeding roller, the axes of said feeding and retarding rollers defining a reference plane passing through the region at which said feeding and retarding rollers most closely approach each other, an exit-side confining shoe conforming to a surface portion of said retarding roller and defining therewith an exit path for the controlled discharge of fabric by said retarding roller and means for adjustably relatively positioning said exit-side confining shoe and said retarding roller to bear with limited controlled pressure upon fabric confined in said
  • improved equipment and techniques are provided for the mechanical compressive shrinkage of fabrics, particularly but not necessarily tubular knitted fabrics, which enable the many important advantages of the differential roller processing technique to be employed yet which significantly minimizes or eliminates certain inherent limitations in the existing procedures.
  • the respective feeding and retarding rollers are separated by a distance significantly greater than the thickness of the fabric being processed, so that the fabric cannot be engaged simultaneously on opposite sides by the respective rollers.
  • a fabric confining shoe (entry shoe) is associated with the feeding roller, and a separate confining shoe (exit shoe) is associated with the retarding roller.
  • the extremities of these respective entry and exit shoes form between them a defined confinement zone.
  • the fabric is decelerated and longitudinally compressed at the entrance to the zone speed, and confined and guided for a controlled dwell time during its passage through the zone.
  • the opposed extremities of the respective confining shoes are located substantially at the point of maximum convergence of the respective feeding and retarding rollers and are disposed at a substantial angle, such as 45°, to the surface of the feeding roller. Accordingly, as the fabric exits the discharge end of the entry shoe, it is abruptly diverted by the leading end of the exit shoe and is guided into the confinement zone, defined between the two shoes. Upon exiting the confinement zone, the fabric is immediately contacted by the outer surface of the retarding roller, travelling at a controllably slower surface speed than the feeding roller.
  • the feeding and retarding rollers are operated at controllably different surface speeds, the rollers do not act simultaneously upon opposite surfaces of the fabric at the same point, so that it is not necessary for the roller surfaces to have any significant slippage with respect to the fabric surfaces.
  • fabric passing through the confinement zone is confined under only minimum pressures, in the thickness direction. This is accomplished by providing for a precision, on-the-fly adjustment mechanism for movably positioning one of the shoes, preferably the entry shoe, for limited motion about a pivot axis. This accommodates variation in the thickness of the confining zone during normal operations of the apparatus.
  • the confining pressures acting on the fabric in the zone are maintained at a level sufficient to avoid crimping of the longitudinally compressed fabric, but typically not significantly greater than that.
  • apparatus of the invention has substantial compatibility, structurally, with the equipment heretofore marketed under the above mentioned United States patents, and with respect to which there is a substantial installed base of equipment.
  • the apparatus of the invention is capable of being incorporated by a relatively simple retrofit into the existing installed equipment, utilizing much of the existing mechanism, resulting in significant upgrading in performance of the equipment for at least certain types of fabrics.
  • Fig. 1 is a perspective view of a complete range incorporating the compressive shrinkage apparatus of the invention, intended particularly for the mechanical compressive shrinkage of tubular knitted fabric.
  • Fig. 2 is a highly enlarged, cross sectional view of the compressive shrinkage station of the apparatus of Fig. 1, showing the respective feeding and retarding rollers and the respective entry and exit confining shoes.
  • Fig. 3 is a representational side elevational view of a portion of the apparatus of Fig. 1, showing particularly structural details of the compressive shrinkage station.
  • Fig. 4 is a fragmentary perspective view, showing portions of the entry and exit confining shoes and details of the mounting means for the exit confining shoe.
  • Fig. 5 is a fragmentary front elevational view showing details of the exit and entry confining shoes.
  • Fig. 6 is a cross sectional view as taken generally on line 6-6 of Fig. 5.
  • Fig. 7 is a simplified schematic representation of a drive control system for the apparatus of Fig. 1.
  • the reference numeral 10 designates in a general way a processing range for treating tubular knitted fabric.
  • Unprocessed fabric 11 from a supply source such as a pallet or truck, is passed upwardly over a rotatable bow 12, which spreads the fabric to a generally flat, two layer form.
  • the fabric is then passed under a first tension bar 13 and over a second tension bar 14.
  • the tension bars 13, 14 are separated by spacers 15, and are mounted on frame members 16 for controlled rotational positioning.
  • the tension bars serve to apply a very light tension to the fabric, sufficient to flatten and control it, but typically insufficient to elongate it to any significant degree.
  • fabric is directed around a guide roller 17 (Fig. 7), over a driven, variable speed control roller 17a, around a floating dancer roll 17b and then through a series of flattening rolls 20.
  • the control roller 17a provides the means for drawing the unprocessed fabric 11 over the bow 12 and through the tension bars 13, 14.
  • the speed of the roller 17a is controlled by the dancer roll 17b with reference to the operating speed of other components of the range, as will be further explained.
  • propeller-spreader station Downstream of the control roller 17a is a propeller-spreader station, generally designated by the numeral 18.
  • the propeller-spreader apparatus may be of the type illustrated in the Frezza United States Patent No. 4,103,402, the disclosure of which is incorporated herein by reference.
  • the spreader apparatus includes an internal spreader frame (not shown) which is received internally of the fabric tube.
  • the spreader frame is supported horizontally by means of grooved edge drive rolls 19, which are adjustable laterally to the width of the spreader frame and which are driven externally by the machine motive system.
  • the spreader frame assembly which is in itself well known and widely utilized in the trade, extends from a series of flattening rolls 20, at its upstream extremity, through a pair of steam boxes 21, 22 on the downstream side of the edge drive rolls 19, substantially to the entry or feeding roll (to be described) of a compressive shrinkage station 23.
  • the incoming fabric may be slightly overfed onto the downstream section of the spreader frame (i.e.. downstream of the edge drive rolls 19) so as to be effectively relaxed in a lengthwise direction and set to a predetermined, uniform width.
  • the fabric is subjected to steam when passing between the steam boxes 21, 22, which serves to moisten and lubricate the fibers of the material and accomodate relaxation and adjustment of the stitches, in preparation for the primary compressive shrinkage treatment.
  • the fabric Immediately upon discharge from the spreader frame section 18, the fabric enters the compressive shrinkage station 23 where, in the manner to be more fully described, it is compressed in a lengthwise direction in a controllable amount which typically is a function of the inherent residual shrinkage of the incoming fabric. In the case of tubular knitted fabrics, this may well be on the order of 15-25%, for example.
  • the longitudinally compressed fabric, now designated by the reference number 24, is advanced to a gathering station 25 which, in the illustrated range, is a roll-up mechanism.
  • the roll-up apparatus may be of the general type shown in the Eugene Cohn et al. U.S. Patent No. 3,606,186 and/or the Samuel Cohn et al. U.S. Patent No. 2,736,098, the disclosures of which are incorporated herein by reference.
  • the fabric, passing to the roll-up device 25, is kept under minimum tension, sufficient only for adequate control of the fabric during the winding of the roll 26.
  • the fabric may be directed to a folder apparatus such as, for example, of the type disclosed in the Frezza U.S. Patent No. 4,053,151.
  • the drive mechanisms for the range of Fig. 1 are illustrated schematically in Fig. 7.
  • Individually speed controlled drive arrangements are provided for the gathering station 25, the compressive shrinkage station 23, the spreader-propeller station 18 and the entry roll 17a. These may be in the form of individually controllable variable speed motors for each of these major sections of the range, or the system may be driven by a primary, speed controllable drive motor 31 in conjunction with variable speed mechanical drives for effecting desired speed control.
  • one of the stations, such as the compressive shrinkage station 23, is a "master" station, driven by a motor 31 and with respect to which the operating speeds of the other stations are automatically slaved.
  • the driven entry roller 17a, the edge drive rolls 19, and the wind up device 25 are respectively driven from the master drive motor 31 through adjustable variable speed mechanisms 17c, 19a and 25a.
  • the variable speed mechanism 17c is controlled by the dancer roll 17b, so as to maintain a constant fabric supply to the propeller-spreader apparatus 18.
  • the speed of the roll-up station 25 were changed, on the other hand, it would be increased or decreased relative to the speed of the compressive shrinkage station 23, and the other stations would be unaffected.
  • the apparatus includes a skeletal frame structure 27 (Fig. 3) on which are mounted bearing supports 28, at opposite sides of the machine, carrying bearing blocks 29.
  • the bearing blocks 29 rotatably journal a feeding roller 30.
  • the feeding roller 30 may be mounted on a fixed axis on the machine frame 27 for controlled rotation by means of a variable speed master drive 31 (Fig. 7).
  • a retarding roller 32 Cooperating with the feeding roller 30 is a retarding roller 32. This is journalled on opposite sides by means of bearing blocks 33 carried by opposite side members 34 of a pivot frame, mounted in the machine frame 27 for pivoting about the axis of a drive shaft 35.
  • the frame members 34 are connected to the rod ends 36 of fluid actuators 37 anchored at 38 in each side of the machine frame.
  • the fluid actuators 37 are one-way actuators, being spring urged to extend the actuating rods 36 toward the left in Fig. 3 and being actuatable, under regulated fluid pressure to retract the actuator rods and thereby draw the retarding roller 32 toward the feeding roller 30.
  • a variable speed mechanical drive 39 (Fig. 7), operated from the master drive 31, serves to drive the retarding roller 32 at a controllably lesser surface speed than the surface speed of the feeding roller 30.
  • the drive 39 may operate a sprocket 40 (Fig. 3) and through a chain or belt 41 a further sprocket 42 mounted on the shaft 35 about which the roller mounting frame 34 is pivoted.
  • a further chain or belt drive (not illustrated) connects the shaft 35 to the retarding roller 32, enabling the retarding roller to be controllably driven in any pivoted position of the frame 34.
  • the feed roller 30 may have an overall diameter of approximately 127 mm (5 inches).
  • the roller is of hollow construction, having a relatively heavy outer steel cylindrical wall of approximately 32 mm (1 1 ⁇ 4 inches) in thickness. Desirably, this is roughened on the exterior surface for enhanced gripping of the incoming fabric 11.
  • the feed roller cooperates with a confining shoe assembly 44, hereinafter referred to as the shoe, which comprises a main shoe body 45 and a zone-forming blade 46.
  • the shoe body 45 and blade 46 form, in effect, a single shoe assembly provided with smooth cylindrical inner surface portions 47, 48.
  • cylindrical surface portions are of just slightly larger diameter than that of the feeding roller 30 (e.g., about 1mm (0.04 inch) on a 130 mm (5 inch) nominal roll diameter), and the center of the cylindrical surface 47-48 may be located slightly offset (to the right in Fig. 2) from the center of the roller, providing a gradually tapered confining slot 49 for guiding and confining the incoming fabric 11 over a substantial arcuate portion of the feed roller 30 (i.e. about 90°) to the discharge end of the shoe assembly.
  • the mounting arrangement for the entry shoe assembly 44 may be substantially in accordance with the Edmund A. Diggle, Jr. U.S. Patent No. 3,973,303, the disclosure of which is incorporated herein by reference.
  • That mechanism includes a pair of upwardly extending brackets 50 mounted for limited rotation on the end shafts 51 of the feed roller 30. These brackets are connected by way of a swivel coupler 52 to a vertically adjustable rod 53 controllably postionable by the machine operator, as through a hand wheel 54 (see Fig. 1). With limited vertical adjustment of the rods 53, the supports 50 may be caused to pivot slightly in a clockwise or counterclockwise direction about the axis of the shaft 51, providing a high precision adjustment of the position of the entry shoe.
  • L-shaped brackets 55 are pivotally mounted at axis 56 on the upwardly projecting brackets 50, and are controllably pivotable relative to the upstanding brackets by means of single-acting air cylinders 57 at each side.
  • the actuators 57 When deactivated, the actuators 57 are spring urged in a retracting direction, to pivot the L-shaped supports 55 in a clockwise direction as viewed in Fig. 3. Under regulated air pressure, the operating rods 58 of the actuators are extended, pivoting the supports 55 in a counterclockwise direction.
  • the shoe assembly 44 includes tilt adjustment lugs 60 at each side, which project through windows 61 in the support members 55, being adjustably positioned within such windows by means of adjusting bolts 62, 63.
  • the slice assembly 44 is in an initial position as shown in Fig. 2.
  • the entire shoe assembly 44 may be tilted about the axis of the pivot bearing 59 as necessary to adjust the configuration of the gradually converging confinement space 49.
  • the entire assembly may be pivoted circumferentially about the axis of the feed roller 30, by vertical adjustment of the shafts 53, causing the upright brackets 50 to pivot about the roller shaft. This provides for a fine adjustment of the positioning of the lower extremity of the feeding shoe assembly and thus the thickness of the confinement zone.
  • Bodily retraction of the entire feeding shoe assembly from the region of the roller nip, between the feeding and retarding rollers 30, 32 is accomplished by deactivating the air actuators 57, pivoting the L-shaped supports 55 clockwise about the axis 56. This may be done to open up the working area of the compressive shrinking station, to facilitate initial threading of a length of fabric into the machine.
  • the zone-forming blade 46 does not taper gradually to a fine point, as is the case in the existing mechanical compressive shrinkage equipment of the type described in the before mentioned Eugene Cohn et al. patents. Rather, the zone-forming blade has a substantial thickness at its lower extremity. In a typical machine, for the processing of a wide range of tubular knitted fabrics in widths of up to 1.30 m (50 inches), the blade thickness at its extremity may be approximately 3 mm (0.12 inch). Also significantly, the bottom surface 66 of the zone-forming blade extends downward and away from the surface of the feed roller 32 at a relatively abrupt angle, in the illustrated apparatus at a nominal angle of about 45°. This angled surface 66 forms one side of a confinement zone, as will be more fully described.
  • the zone-forming blade 46 typically is secured to the body 45 of the entry shoe by means of a plurality of bolts 67, spaced across the width of the blade (see Figs. 5 and 6).
  • the shoe body 45 itself may comprise a plurality of shoe segments, individually adjustable with respect to a mounting beam 68, to enable precision final adjustment of the zone-forming blade 46.
  • an exit shoe assembly 69 comprising a shoe body 70 and a zone-forming blade 71.
  • the blade 71 as the blade 46, is formed with front and back arcuate surfaces 72, 73 confronting surface portions of the respective feeding and retarding rollers 30, 32. At least the back arcuate surface 73 approximately conforms to the surface contours of the retarding roller 32 over an arc of, say 15-20°, so as to form a gradually divergent exit path 89 for fabric being conveyed by the retarding roller.
  • the surface 73 may have a radius of about 63.5 mm (2.50 inches) for cooperation with a retarding roller 32 having an outside diameter of approximately 125 mm (4.92 inch), with the center of radius of the surface 73 being located slightly to the left of the roll axis, as viewed in Fig. 2, to provide for the slightly divergent contours of the exit path, which are somewhat exaggerated in Fig. 2.
  • the configuration of the upper end of the zone-forming blade 71 is complementary to the lower configuration of the upper blade 46.
  • the thickness of the blade extremity 74 is substantially identical (i.e. approximately 3 mm (0.12 inch) in the example), and the upper zone-forming surface 75 is disposed at the same angle as the surface 66.
  • precision mounting of the retarding shoe assembly 69 is provided by means of a large, heavy angle member 76, which is rigidly secured at each end to mounting brackets 77.
  • the angle members may be provided with welded caps 78 at each end, which are secured to the brackets 77 by bolts 78a.
  • the body portion 70 of the retarding shoe is rigidly welded to the upper leg 79 of the angle member, as shown in Fig. 6, and is provided with a recess 80 for the reception of the zone-forming blade 71. Precision adjustment of the blade is achieved by providing a large plurality of mounting bolts 81, received in vertically elongated slots 82 in the blade member.
  • a plurality of adjusting bolts 83 extend upwardly through the shoe body 70 to engage the bottom surface of blade 71.
  • the tightening bolts 81 may be spaced apart approximately 66 mm (2.6 inches), for example, while the vertical adjustment bolts 83 may be spaced about 132 mm (5.2 inches) apart, one for each pair of tightening bolts. This arrangement enables a high degree of precision to be achieved in alignment of the lower zone-forming blade 71 with respect to the upper zone-forming blade 46, for precision definition of the treating zone, defined by the respective upper and lower blade surfaces 66, 75.
  • the angle bar assembly is pivoted on the machine frame 27 by a shaft 84 carried by the machine frame by means of a mounting block 85 at each side, which is an integral part of bearing support 28.
  • This is a convenient mounting, as the shaft 84 and block 85 are already provided on the existing installed base of commercial machines and can be used conveniently for retrofit of such machines to incorporate the improvements of the present invention.
  • the location of the pivot shaft 84, with respect to the distributed weight of the angle member 76 and mounting brackets 77 is such that the assembly tends to pivot by gravity in a clockwise direction, as viewed in Fig. 6, tending to pivot the lower zone-forming blade 71 toward the feeding roller 30.
  • This movement is adjustably limited to maintain a predetermined minimum spacing between the front arcuate surface 72 of the blade and the surface of the feeding roller 30.
  • Such adjustment may be provided by the use of shims (not shown) at the end extremities of the feed roller to limit closing movement of the blade 71, or by means such as adjusting bolts 86 engageable with the mounting brackets 77, as shown in Fig. 6.
  • pivoting movement of the blade mounting in the opposite or counterclockwise direction may be unrestricted within limits to facilitate clearing the machine.
  • the outer ends of the bracket 77 may be provided with elongated slots 87 in which are received limiting pins 87a. Pivoting action of the bracket 77 is free within the limits of the elongated slot 87, subject to the positioning of the adjusting bolts 86 and/or limiting shims, and also, of course, limited by the presence of the retarding roller 32.
  • the zone-forming blades 46, 71 are positioned such that their angular surface extremities 66, 75 are located substantially at the point of maximum convergence of the rollers, i.e. substantially on a plane including both roller axes.
  • the acutely angled tip 88 of the lower blade 71 is spaced very close to, but not in contact with the outer surface of the feeding roller 30.
  • the upper blade 46 is positioned with respect to the lower blade such that the zone-forming surfaces 66, 75 are spaced slightly apart and may be slightly divergent.
  • the arcuate surface 48 of the upper blade 46 is spaced slightly from the surface of the feeding roller, and this may be assured by the provision of shims or spacing rings at the end extremities of the feeding roller, or by other limit adjustments, as will be appreciated.
  • the upper fluid actuators 57 are charged with air under limited pressure typically in the range of slightly above zero up to about 3.4 Pa (5 psi), acting on pistons of about 129 cm2 (20 square inches).
  • the closing force available from the actuators 57, in an example 1.30 m (50 inch) machine is thus desirably about 890 N (200 pounds) or less, which results in an applied force of a few hundreds Newton per meter (pounds per lineal inch).
  • Unprocessed fabric 11 in flat form and at uniform width, enters the confined passage 49 and is advanced therethrough under very limited confining pressure, by reason of the roughened surface of the feeding roller.
  • the fabric either in two-layer form in the case of tubular knitted fabric, or in a single layer in the case of other fabrics, is advanced through the passage 49 at the surface speed of the feed roller 30.
  • the fabric Upon reaching the lower extremity of the arcuate surface 48, the fabric is abruptly diverted by the blade surface 75 into a confinement zone formed between the surfaces 66, 75, which may be divergently related by a small amount (e.g., less than 1°).
  • Fabric traverses the confinement zone, which in the illustrated apparatus may have a length of about 4.3 mm (0.17 inch), until it engages the outer surface of the retarding roller 32. Thereupon it is abruptly diverted into the confined passage 89 formed between the arcuate confining surface 73 of the exit shoe assembly and the outer surface of the retarding roller.
  • the fabric enters the upper extremity of the confined retarding passage 89, it immediately assumes the surface speed of the retarding roller 32, which is controlled, by the variable speed mechanism 39, to be variably slower than the surface speed of the feeding roller 30, perhaps by as much as 15-25% in the case of some fabrics, less perhaps with others, according to the requirements of a particular fabric construction.
  • the change in speed of the fabric occurs principally at the entrance to the confinement zone defined by the surfaces 66, 75.
  • the fabric has a predetermined dwell time in the confinement zone, during which it is exposed to heat and confinement.
  • the thickness of the confinement zone is adjusted (by the handwheel 54 and rods 53) to be slightly greater than optimum, to induce some degree of creping, and the condition of the processed fabric is observed. As long as any creping is observed, the thickness of the confinement zone is gradually decreased by manipulation of the handwheel until the creping just disappears.
  • the surface of the retarding roll is formed with a layer 91 of elastomeric material, which typically may be about 6.35 mm (1 ⁇ 4 inch) thick. It may, however, be formed of metal with a roughened surface.
  • the retarding roll is drawn toward the confining surface 73 with a limited amount of pressure, exerted by the fluid actuators 37, under controlled pressure via a variable pressure regulator 92.
  • the net applied force need be sufficient only to establish effective frictional contact with the fabric discharged from the confinement zone so as to achieve positive gripping action on the fabric.
  • minimal contact pressures are required for this purpose, as in the case of the contact pressures necessary with respect to the feeding shoe assembly with respect to the feeding roller.
  • adjustable limit stops may be provided to limit the closing movement of the retarding roller toward the confining surface 73 of the lower blade.
  • the feeding and retarding rolls are separated by a distance just slightly greater than the thickness of the zone-forming blades 46, 71, as is evident in Fig. 2.
  • the incoming fabric is relatively warm and moist from the application of steam at the steam boxes 20, 21.
  • means advantageously are provided for heating of at least the feeding roller 30 and the feeding shoe assembly 44.
  • the entry shoe assembly 44 may advantageously be heated by means of an electric heater associated with the shoe body 45.
  • the feeding roller 30 is heated internally by means of steam or heated oil, for example. Desirably, provisions are made for controlling the heating media to provide for different temperatures between the feeding roller 30 and the feeding shoe assembly 44.
  • a very significant aspect of the invention is the fact that an angular confinement zone separates the respective feeding and retarding rollers by a short distance significantly greater than the thickness of the fabric.
  • the feeding and retarding rolls do not simultaneously contact the fabric at the same point on opposite sides with surfaces travelling at different speeds.
  • the fabric subjected to wrenching reversals of direction during the compressive shrinkage procedure.
  • the fabric is advanced through the feeding zone with a minimum of confining pressure and abrasion, passes through the confining zone with virtually symmetrical conditions on its opposite surfaces, and is engaged thereafter in a retarding zone in which there is effectively no slippage of the fabric even though it is confined by minimum pressures.
  • the finished, compressively shrunk fabric typically is of the same thickness after treatment as before.
  • the treated fabric may be 15% to 25% thinner in some cases, because of the necessity to compress the fabric substantially in the thickness direction during processing.
  • the fabric is treated very gently throughout, as evidenced by the greater finished thickness. This enables significantly superior results to be derived in the treatment of sensitive fabrics, for example.
  • the method and apparatus of the invention are uniquely well suited for processing of tubular knitted fabrics in a single station machine, because there is a minimum of differential action between opposite surfaces of the fabric being processed in two-layer form. There is thus an absolute minimum of opportunity for two-sidedness to occur in the fabric.
  • fabric it is of course necessary in the apparatus of the invention for fabric to slide along the confining surfaces of the feeding and retarding shoes, it is possible with the apparatus of the present invention to maintain contact pressures at extremely low levels, so that even sensitive fabrics are processed delicately and with minimum degradation of the finished appearance sought by the customer.
  • An included benefit of being able to process fabric in a single station and using low contact pressures is significantly lower power requirements.
  • the floor-space occupied by the equipment is also significantly reduced by elimination of need for a second stage of compressive shrinkage.
  • the compressive treatment zone is disposed at an angle of 45° to the adjacent roller surfaces.
  • the maximum and miminum limits of such angle have not been fully determined, although it is believed are the basis of investigations that the angle should not be less than about 30° nor more than about 60° with respect to the adjacent surface of the feed roller.
  • the method and apparatus of the invention are of course applicable to fabrics other than tubular knitted fabrics, and would be applicable to open width knitted fabrics, for example, various compressible gauze materials and the like.
  • the method and apparatus of the invention are also suitable for so-called " wet compacting", where fabric is dyed or otherwise treated with a processing liquid, extracted to a level of 75% - 80% moisture, for example, and then subjected to compressive shrinkage treatment.
  • wet compacting where fabric is dyed or otherwise treated with a processing liquid, extracted to a level of 75% - 80% moisture, for example, and then subjected to compressive shrinkage treatment.
  • this has been difficult because the relatively high pressures required to be applied to the fabric resulted in unwanted extraction of liquids at the compressive shrinkage treatment station.
  • the unusually low contact pressures required to carry out the process greatly minimize or eliminate altogether unwanted extraction of treating liquid during the compressive treatment phase.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (12)

  1. Vorrichtung zum kompressiven Vorschrumpfen gestrickter Waren und dergleichen, mit
    a) einer Beschickungsrolle (30) für die Ware,
    b) einem eingangsseitigen Spannschuh (44) für die Ware, welcher im allgemeinen einem Flächenabschnitt der Beschickungsrolle (30) entspricht und damit einen Spann-Eingangsweg (49) für die überwachte Vorwärtsbewegung der Ware (11) durch die Beschickungsrolle (30) definiert,
    c) Mitteln (57) zum einstellbaren relativen Positionieren des eingangsseitigen Spannschuhs (44) und der Beschickungsrolle (30) für die Ware zum Ausüben beschränkten kontrollierten Druckes auf die Ware (11), die in dem Eingangsweg (49) gespannt wird,
    d) eine Verzögerungsrolle (32) für die Ware, die zur Drehung eng benachbart und parallel der Beschickungsrolle (30) angebracht ist,
    e) wobei die Achsen der Beschickungs- und der Verzögerungsrolle (30, 32) eine Referenzfläche definieren, welche durch den Bereich verläuft, in dem die Beschickungs- und Verzögerungsrolle (30, 32) einander am nächsten kommen,
    f) einem ausgangsseitigen Spannschuh (69), der einem Flächenabschnitt der Verzögerungsrolle (32) entspricht und mit dieser einen Ausgangsweg (89) für das kontrollierte Auslassen von Ware durch die Verzögerungsrolle (32) definiert;
    g) Mitteln (37, 92) zum einstellbaren relativen Positionieren des ausgangsseitigen Spannschuhs (69) und der Verzögerungsrolle (32), um mit beschränktem kontrolliertem Druck auf die Ware zu wirken, die in dem Ausgangsweg (89) gespannt wird,


    gekennzeichnet durch
    h) die Spannschuhe (44, 69) mit klingenähnlichen Erweiterungen (46, 71), die zwischen die Rollen (30, 32) ragen und sich in dem allgemeinen Bereich der Ebene treffen, die die Achsen der Rollen (30, 32) enthält, und
    i) Mitteln, die gegenüberstehende Flächen (66, 75) der klingenähnlichen Erweiterungen (46, 71) auweisen, welche eine Spannzone für den unter Spannung ablaufenden und überwachten Durchgang der Ware während des Übergangs von dem Eingangsweg (49) zu dem Ausgangsweg (89) bilden.
  2. Vorrichtung zum kompressiven Vorschrumpfen nach Anspruch 1, weiter gekennzeichnet durch
    a) die Spannzone, die unter einem Winkel von etwa 40° zur Oberfläche der Beschickungsrolle (30) angeordnet ist.
  3. Vorrichtung zum kompressiven Vorschrumpfen nach Anspruch 2, weiter gekennzeichnet durch
    a) einen der Spannschuhe (44), der für eine beschränkte Schwenkbewegung um die Achse der mit ihm zusammenwirkenden Rolle (30) angebracht ist, so daß die Dicke der Spannzone regelbar erhöht oder erniedrigt werden kann.
  4. Vorrichtung zum kompressiven Vorschrumpfen nach Anspruch 1, weiter gekennzeichnet durch
    a) die Mittel zum einstellbaren relativen Positionieren der Spannschuhe und der Rollen, welche Fluid-Antriebsmittel (37, 57) und Reguliermittel (92) zum Einstellen des Druckes aufweisen.
  5. Vorrichtung zum kompressiven Vorschrumpfen nach Anspruch 1, weiter gekennzeichnet durch
    a) einstellbare Positionierungseinrichtungen (81, 82, 83) zum kontrollierbaren Bewegen der klingenartigen Erweiterungen (46, 71) relativ aufeinander zu oder voneinander weg, so daß die Dicke der Spannzone bei einer Dicke aufrechterhalten wird, bei der das Kräuseln der Ware während des Durchlaufens durch die Zone verhindert wird.
  6. Vorrichtung zum kompressiven Vorschrumpfen nach Anspruch 1, weiter gekennzeichnet durch
    a) getrennte Mittel, die zum Erhitzen der Beschickungsrolle (30) und des eingangsseitigen Spannschuhs (44) vorgesehen sind.
  7. Vorrichtung zum kompressiven Vorschrumpfen nach Anspruch 1, weiter gekennzeichnet durch
    a) die Beschickungsrolle (30), welche aus einem metallischen Aufbau besteht und eine aufgerauhte Außenfläche zum wirksamen positiven Greifen der Ware hat.
  8. Vorrichtung zum kompressiven Vorschrumpfen nach Anspruch 7, weiter gekennzeichnet durch
    a) die Verzögerungsrolle (32), welche eine nachgiebige Außenfläche (91) hat.
  9. Verfahren zum Aufgeben kompressiven Schrumpfens in Längsrichtung auf Schlauchwaren und dergleichen unter Verwendung der Vorrichtung nach Anspruch 1, welches
    a) das Liefern der Ware (11) in flacher Form und in feuchtem Zustand,
    b) das Vorschieben der Ware (11) in kontrollierter Weise durch Berühren einer Fläche der Ware mit einer Fläche einer kontrollierbar betriebenen Beschickungsrolle, während die gegenüberliegende Fläche der Ware eng gespannt wird, unter beschränktem kontrolliertem Druck,
    c) plötzliches Unterbrechen des Spannens der Ware und Ablenken der Ware von der Rollenfläche mit einem scharfen Winkel;
    d) Führen und Spannen der Ware durch eine Spannzone größerer Länge als die Dicke der Ware;
    e) unmittelbar darauffolgend Eingreifen und Stützen der gegenüberliegenden Fläche der Ware durch die Fläche einer regelbar angetriebenen Verzögerungsrolle (32), die sich mit einer Oberflächengeschwindigkeit bewegt, die geringer ist als die der Beschickungsrolle (30),
    f) wobei die Oberfläche der Verzögerungsrolle (32) im Punkt der anfänglichen Berührung mit der Ware in einem großen Winkel in bezug auf die Ware angeordnet ist, die in der Spannzone gespannt wird;
    g) Spannen der Waren gegen die Fläche der Verzögerungsrolle (32) bei beschränktem kontrolliertem Druck und
    h) Aufrechterhalten genügend kontrollierten Spanndruckes auf die gegenüberliegende Fläche der Ware in der Spannzone zum Vermeiden von Kräuseln der Ware in der Zone


    aufweist.
  10. Verfahren nach Anspruch 9, weiter gekennzeichnet durch
    a) Aufgeben von Wärme auf die Ware während des Vortriebs und
    b) wobei die Wärme überwachbar und von gegenüberliegenden Seiten der Ware aufgegeben wird.
  11. Verfahren nach Anspruch 9, weiter gekennzeichnet dadurch, daß
    a) die Ware durch die Spannzone unter einem Winkel von etwa 45° zur benachbarten Oberfläche der Beschickungsrolle (30) und in einem Abstand von etwa 4.3 mm (0.17 Zoll) geführt wird.
  12. Verfahren nach Anspruch 11, weiter dadurch gekennzeichnet, daß
    a) die Ware eine Schlauchware umfaßt und
    b) die Schlauchware angeliefert wird, wobei sie in seitlicher Richtung auf vorbestimmte gleichförmige Breite ausgezogen ist und, während sie auf dieser Breite gehalten wird, gedämpft wird.
EP88116535A 1987-10-13 1988-10-06 Verfahren und Vorrichtung zum kompressiven Schrumpfen von Schlauchwaren Expired - Lifetime EP0311897B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88116535T ATE70863T1 (de) 1987-10-13 1988-10-06 Verfahren und vorrichtung zum kompressiven schrumpfen von schlauchwaren.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10795387A 1987-10-13 1987-10-13
US107953 1987-10-13

Publications (2)

Publication Number Publication Date
EP0311897A1 EP0311897A1 (de) 1989-04-19
EP0311897B1 true EP0311897B1 (de) 1991-12-27

Family

ID=22319376

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88116535A Expired - Lifetime EP0311897B1 (de) 1987-10-13 1988-10-06 Verfahren und Vorrichtung zum kompressiven Schrumpfen von Schlauchwaren

Country Status (19)

Country Link
EP (1) EP0311897B1 (de)
JP (1) JPH01221568A (de)
KR (1) KR910002513B1 (de)
CN (1) CN1029863C (de)
AR (1) AR241814A1 (de)
AT (1) ATE70863T1 (de)
AU (1) AU599840B2 (de)
BR (1) BR8805226A (de)
CA (1) CA1300864C (de)
DE (1) DE3867201D1 (de)
ES (1) ES2028233T3 (de)
GR (1) GR3003817T3 (de)
HU (1) HU209698B (de)
IL (1) IL87941A (de)
MX (1) MX170281B (de)
NZ (1) NZ226509A (de)
PL (1) PL158705B1 (de)
TR (1) TR23556A (de)
ZA (1) ZA887560B (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6047452A (en) * 1998-01-23 2000-04-11 Caruso; Frank Cylindrical belt finishing machine for knit fabric
IT201700108694A1 (it) * 2017-09-28 2019-03-28 Ferraro Spa Apparato e metodo di compattazione per tessuti
CN112281389B (zh) * 2020-10-12 2022-05-17 浙江瑞格机械科技有限公司 智能化高速平幅针织预缩联合机及其加工工艺

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2706933C3 (de) * 1977-02-18 1979-12-13 Andre Dipl.-Ing. 7513 Stutensee Lafeber Vorrichtung zum Behändem von flächigem oder fadenförmigem Gut zwischen Walzen
US4363161A (en) * 1979-11-16 1982-12-14 Frank Catallo Method and apparatus for the compressive treatment of fabric
US4689862A (en) * 1986-04-25 1987-09-01 Frank Catallo Method and apparatus for the compressive treatment of fabric

Also Published As

Publication number Publication date
ZA887560B (en) 1990-01-31
PL275260A1 (en) 1989-06-12
HU209698B (en) 1994-10-28
EP0311897A1 (de) 1989-04-19
ATE70863T1 (de) 1992-01-15
TR23556A (tr) 1990-03-23
CN1032559A (zh) 1989-04-26
GR3003817T3 (de) 1993-03-16
BR8805226A (pt) 1989-05-23
AU2374088A (en) 1989-04-13
CN1029863C (zh) 1995-09-27
JPH0316417B2 (de) 1991-03-05
NZ226509A (en) 1991-02-26
CA1300864C (en) 1992-05-19
MX170281B (es) 1993-08-13
KR890006901A (ko) 1989-06-16
ES2028233T3 (es) 1992-07-01
PL158705B1 (pl) 1992-09-30
HUH3507A (en) 1990-12-28
AU599840B2 (en) 1990-07-26
JPH01221568A (ja) 1989-09-05
IL87941A (en) 1992-02-16
AR241814A1 (es) 1992-12-30
IL87941A0 (en) 1989-03-31
KR910002513B1 (ko) 1991-04-23
DE3867201D1 (de) 1992-02-06

Similar Documents

Publication Publication Date Title
US5016329A (en) Apparatus for compressive shrinkage of tubular knitted fabrics and the like
FI63264C (fi) Foerfarande och maskin foer laengsgaoende foertaetningsbehandling av en bana
US3015146A (en) Method and apparatus for compacting web materials, such as fabrics
US4882819A (en) Method for compressively shrinking of tubular knitted fabrics and the like
EP0786428B1 (de) Vorrichtung zum Ausbreiten einer Bahn
US2084367A (en) Apparatus for treating cloth
US4562627A (en) Method for finish drying of tubular knitted fabrics
EP0311897B1 (de) Verfahren und Vorrichtung zum kompressiven Schrumpfen von Schlauchwaren
US4173812A (en) Apparatus for calendering tubular knitted fabrics
US4146946A (en) Apparatus for steaming of tubular knitted fabric
US20120233826A1 (en) Method and apparatus for compacting tubular fabrics
EP0745152B1 (de) Vorrichtung zur durchbiegungssteuerung der walzen in einer maschine zum krumpfen von warenbahnen
US4888860A (en) Apparatus and method for shrink treating a textile fabric web
US3973305A (en) Apparatus for conditioning and calendering circular knit tubular fabrics
US3973304A (en) Spreader for circular knit fabric tubes
US2797086A (en) Control apparatus
US3973306A (en) Method of orienting and calendering circular knit fabric tubes
EP0179932B1 (de) Verfahren und Vorrichtung zum Trocknen von Rundstrickwaren
US4523389A (en) Apparatus for drying tubular knitted fabric
US2130118A (en) Fabric feeding system
EP3688217B1 (de) Vorrichtung und verfahren zum schrumpfen von gewebe
WO1980001084A1 (en) Method and apparatus for heat-treating tubular knit fabrics
CA1245432A (en) Method and apparatus for drying tubular knitted fabric
US9725837B2 (en) Shoe for a compactor and for avoiding heat deformation thereof
NZ210005A (en) Tensioned tubular knitted fabric dried by passage beneath steam nozzle

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19890520

17Q First examination report despatched

Effective date: 19901228

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

REF Corresponds to:

Ref document number: 70863

Country of ref document: AT

Date of ref document: 19920115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3867201

Country of ref document: DE

Date of ref document: 19920206

ITF It: translation for a ep patent filed

Owner name: STUDIO CONS. BREVETTUALE S.R.L.

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2028233

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

REG Reference to a national code

Ref country code: GR

Ref legal event code: FG4A

Free format text: 3003817

26N No opposition filed
EPTA Lu: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 88116535.1

REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: COMPAX CORPORATION TRANSFER- TUBULAR TEXTILE LLC

REG Reference to a national code

Ref country code: ES

Ref legal event code: PC2A

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

BECA Be: change of holder's address

Free format text: 19990128 *TUBULAR TEXTILE L.L.C. A GEORGIA LTD LIABILITY CY C/O RICHARDS L.L.C.:303 PEACHTREE STREET N.E. SUITE 4100, ATLANTA GEORGIA 30308

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20040922

Year of fee payment: 17

Ref country code: AT

Payment date: 20040922

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20040923

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20040924

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20040927

Year of fee payment: 17

Ref country code: SE

Payment date: 20040927

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20040929

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20041015

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20041028

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 20050831

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20051005

Year of fee payment: 18

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051006

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051006

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051006

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051007

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051007

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060501

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060503

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20051006

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060630

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20060501

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20060630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061031

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061031

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20051007

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

BERE Be: lapsed

Owner name: *TUBULAR TEXTILE L.L.C. A GEORGIA LTD LIABILITY CY

Effective date: 20051031

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20070925

Year of fee payment: 20

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070503