EP0016939A1 - A napping machine, a method of napping a fabric, and a fabric napped according to this method - Google Patents

A napping machine, a method of napping a fabric, and a fabric napped according to this method Download PDF

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Publication number
EP0016939A1
EP0016939A1 EP80100707A EP80100707A EP0016939A1 EP 0016939 A1 EP0016939 A1 EP 0016939A1 EP 80100707 A EP80100707 A EP 80100707A EP 80100707 A EP80100707 A EP 80100707A EP 0016939 A1 EP0016939 A1 EP 0016939A1
Authority
EP
European Patent Office
Prior art keywords
napping
rolls
fabric
textile
machine
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.)
Withdrawn
Application number
EP80100707A
Other languages
German (de)
English (en)
French (fr)
Inventor
Giuseppe Martinelli
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0016939A1 publication Critical patent/EP0016939A1/en
Withdrawn legal-status Critical Current

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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
    • D06C11/00—Teasing, napping or otherwise roughening or raising pile of textile fabrics

Definitions

  • This invention relates to a napping machine comprising rolls which act on a textile fabric to raise a nap.
  • the invention also relates to a method of napping a fabric or textile with napping rolls to raise a nap.
  • a typical conventional napping machine comprises a very large drum on the periphery of which a large number of napping rolls are mounted. Each napping roll is provided with hooks or prongs on the outer periphery thereof.
  • a textile or fabric to be napped is drawn around the periphery of the drum and the napping rolls rotate so that the hooks or prongs act on the fabric or textile.
  • the fabric is acted on by the napping rolls which raise a nap on the surface of the fabric closest to the large drum. The napping is thus given just to one side of the textile or fabric as the textile or fabric advances.
  • a napping machine in accordance with the invention there is provided one or more groups each comprising at least four napping rolls, means for advancing a fabric or textile between top napping rolls and bottom napping rolls forming said group, each napping roll being mounted on members which are eccentrically mounted on rotationally driven shafts, means being provided to retard the otherwise free rotation of the napping rolls.
  • the napping rolls are hollow metal cylinders having a teasing covering.
  • each napping roll is freely rotatably mounted on bearings provided at the ends of the roll the bearings engaging members which are mounted eccentrically at the ends of shafts.
  • the means for retarding the rotation of the rolls are two adjustable band brakes common to the two rolls of the top pair and bottom pair respectively.
  • the shafts are driven by a transmission which also drives the said means for advancing the web or textile.
  • the distance between the top napping rolls and the bottom napping rolls is adjustable.
  • a method of napping in accordance with the invention comprises the steps of drawing the fabric or textile between top napping rolls and bottom napping rolls, each said napping roll being rotatably mounted on members which are eccentrically mounted on shafts that are rotatably driven, the otherwise free rotation of the napping rolls being retarded by brake means, the rolls being in contact with the fabric or textile to raise a nap.
  • the invention also relates to a textile or fabric when napped by such a method.
  • a napping machine in accordance with the invention can be very much smaller than the above described conventional prior napping machine.
  • the machine in accordance with the invention can provide an effective napping treatment in a single pass, with a minimum of waste, thus reducing the cost of effecting the napping treatment.
  • a napping machine in accordance with the invention comprises a strong transverse frame 1 with side uprights members 2 supporting a group 3 of four napping rolls 4.
  • Each roll 4 of the group 3 is mounted to rotate freely, an eccentric is located between the roll and a rotating shaft. On rotation of the rotating shaft the axis of the roll will move or oscillate by virtue of the action of the eccentric.
  • the group comprises a pair of top rolls intended to act on the upper surface of a textile or fabric and a pair of bottom rolls intended to act on the lower surface of the textile or fabric.
  • the rolls 4 are acted on in the said pairs by adjustable retarding means, as will be described hereinafter in greater detail.
  • FIGS 2 and 3 show details of the assembly of each roll 4.
  • the roll 4 is a hollow metal cylinder 5 having a teasing covering 6, comprising a band or web or the like from which a number of bent needles or prongs extend at an angle of 45°.
  • the cylinder 5 is mounted with by end bearings 7 on eccentrics 8 located on a shaft 9.
  • the shaft 9 is rotatably mounted in supports 10 and is rotated by a motor by way of a chain or ribbed belt drive driving a sprocket or the like 11 at one end of shaft 9.
  • two adjacent rolls 4, 4' (and 4" and 4"') of the group 3 are retarded together ( Figures 2 and 5) by a single retarding element or brake 12 (and 12') which extends around the roll ends 13; the retarding element or brake is usually gentle in its action, which can be adjusted by tightening or slackening ( Figure 5) a screw 14 (or 14').
  • the apparatus also comprises a drawing roll 15 ( Figure 1) operated by the motor which drives the shafts 9 and used to draw a fabric or textile to be napped through the napping machine.
  • a drawing roll 15 Figure 1 operated by the motor which drives the shafts 9 and used to draw a fabric or textile to be napped through the napping machine.
  • a fabric or textile t to be napped is introduced (see Figure 4) between the top pair and bottom pair of rolls 4 of the group 3, the fabric moving from a reel of the fabric, for example, towards the drawing roll 15.
  • the motor driving the machine starts the textile or fabric t is drawn through the machine and the four shafts 9 are rotated by the chain drive driving the sprockets 11.
  • the rolls 4 disposed thereon tend to oscillate radially because of the action of the eccentrics 8 and also the rolls rotate both to follow the rotation of the shafts 9 and to follow the movement of the textile or fabric being processed as it is pulled by the roll 15.
  • the napping rolls therefore execute a very irregular composite motion, the laws governing which can be varied to some extent by adjusting the braking means 12, which retard the otherwise free rotational movement of the rolls.
  • the above described machine can of course be adapted to treat different kinds of fabric or textile, for example, fabrics or textiles of various thicknesses, just by adjusting the relative position of the top and bottom rolls.
  • a machine in accordance with the invention can also comprise more than one set of napping rolls, for instance, two or even three sets disposed in cascade, if necessary to meet special processing requirements or if required to provide a better treatment of some textiles. It is to be appreciated, each set can comprise more than four rolls and have, for instance, three top rolls and three bottom rolls located respectively above and below the fabric or textile to be napped.
  • the advantages of the above described teasing machine in accordance with this invention are readily appreciated .
  • the machine requires a minimum of space and, for example where at present a pair of conventional roll type napping machines are installed, from 5 to napping machines in accordance with the invention and as described above can readily be accomodated.
  • the described napping machine treats the fabric or textile simultaneously on both its faces and as a rule requires only a single pass of the fabric or textile through the machine to effect such napping so that the times required to nap the fabrics or textile on both faces (which is the usual treatment) is reduced substantially as compared with conventional practice.
  • processing costs drop appreciably. There may be a further drop in costs since fewer personnel may be required to supervise the operation of the machines.
  • one main benefit of utilising the above described machine in accordance with the invention relates to the quality of the nappped product.
  • the napping machine described above can considerably improve the feed and appearance of the napped fabric or textile and simultaneously reduce waster consequently, appreciably softer, thicker, bulkier and better looking fabrics or textiles can be prepared from a given starting fabric or good-quality products can be prepared from fabrics of poorer quality than are used at present.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
EP80100707A 1979-02-21 1980-02-12 A napping machine, a method of napping a fabric, and a fabric napped according to this method Withdrawn EP0016939A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2038479 1979-02-21
IT20384/79A IT1111691B (it) 1979-02-21 1979-02-21 Garzatrice piana per la lavorazione di tessuti in modo razionale ed efficace

Publications (1)

Publication Number Publication Date
EP0016939A1 true EP0016939A1 (en) 1980-10-15

Family

ID=11166231

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80100707A Withdrawn EP0016939A1 (en) 1979-02-21 1980-02-12 A napping machine, a method of napping a fabric, and a fabric napped according to this method

Country Status (3)

Country Link
EP (1) EP0016939A1 (it)
ES (1) ES488784A1 (it)
IT (1) IT1111691B (it)

Cited By (5)

* 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
EP0668386A2 (en) * 1994-01-27 1995-08-23 SPEROTTO RIMAR S.p.A. Profiled cylinder for teaseling and/or fluffing machines
EP1081265A2 (en) * 1999-09-06 2001-03-07 Comet S.p.A. A raising machine
CN111571317A (zh) * 2020-06-02 2020-08-25 叶县广达铝业有限责任公司 一种阳极氧化铝带生产线喷砂装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2397481A1 (fr) * 1977-07-13 1979-02-09 Cami Spa Centro Macchi Procede et dispositif correspondant pour redresser le poil ou effectuer une operation analogue sur une etoffe en general

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2397481A1 (fr) * 1977-07-13 1979-02-09 Cami Spa Centro Macchi Procede et dispositif correspondant pour redresser le poil ou effectuer une operation analogue sur une etoffe en general

Cited By (7)

* 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
EP0668386A2 (en) * 1994-01-27 1995-08-23 SPEROTTO RIMAR S.p.A. Profiled cylinder for teaseling and/or fluffing machines
EP0668386A3 (en) * 1994-01-27 1997-01-02 Sperotto Rimar Spa Profiled cylinder for roughing machines.
EP1081265A2 (en) * 1999-09-06 2001-03-07 Comet S.p.A. A raising machine
EP1081265A3 (en) * 1999-09-06 2002-02-13 Comet S.p.A. A raising machine
CN111571317A (zh) * 2020-06-02 2020-08-25 叶县广达铝业有限责任公司 一种阳极氧化铝带生产线喷砂装置

Also Published As

Publication number Publication date
ES488784A1 (es) 1980-09-16
IT7920384A0 (it) 1979-02-21
IT1111691B (it) 1986-01-13

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

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Effective date: 19811118