EP0068748B1 - Verfahren und Vorrichtung zum Ausrüsten von Gestricken aus Baumwolle - Google Patents

Verfahren und Vorrichtung zum Ausrüsten von Gestricken aus Baumwolle Download PDF

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Publication number
EP0068748B1
EP0068748B1 EP82303173A EP82303173A EP0068748B1 EP 0068748 B1 EP0068748 B1 EP 0068748B1 EP 82303173 A EP82303173 A EP 82303173A EP 82303173 A EP82303173 A EP 82303173A EP 0068748 B1 EP0068748 B1 EP 0068748B1
Authority
EP
European Patent Office
Prior art keywords
fabric
ammonia
fibres
cotton
finishing
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
Application number
EP82303173A
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English (en)
French (fr)
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EP0068748A1 (de
Inventor
Inger Kari Jacobsen
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.)
NORSK TEKSTILINSTITUTT
Original Assignee
Norsk Tekstilinstitutt
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Filing date
Publication date
Application filed by Norsk Tekstilinstitutt filed Critical Norsk Tekstilinstitutt
Priority to AT82303173T priority Critical patent/ATE15511T1/de
Publication of EP0068748A1 publication Critical patent/EP0068748A1/de
Application granted granted Critical
Publication of EP0068748B1 publication Critical patent/EP0068748B1/de
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B7/00—Mercerising, e.g. lustring by mercerising
    • D06B7/08—Mercerising, e.g. lustring by mercerising of fabrics of indefinite length

Definitions

  • This invention relates to a process and apparatus for finishing of knitted fabrics of cotton or other natural or regenerated cellulosic fibres, or blends thereof with other fibres.
  • Canadian Patent No. 765735 is concerned with an ammonia treatment of such fabrics, and also-and more particularly-of woven fabrics of the same materials, to impart thereto varying degrees of elasticity (stretchiness) and/or crease resistance.
  • the process involves swelling the fibres of the fabric by impregnating it with liquid ammonia and, after a time interval, evaporating the ammonia from the still swelled fibres.
  • the finished knitted fabrics which can be produced according to the invention of cotton or of other natural or regenerated cellulosic material are lustrous, flat and dense and they lack spirality and edge curling, and are crease resistant, all being characteristics of mercerized fabrics, and they have in addition good dimensional stability uncharacteristic of mercerized fabric.
  • Particularly useful are fabrics in which the linear shrinkage in the coursewise direction is less than 5%. It is preferred that the linear shrinkage in either direction is less than 10%.
  • a single jersey fabric produced according to the present invention preferably has a Kr value in excess of 1.0, and more preferably in the range from about 1.1 to about 1.3. (The Kr value is the number of courses per unit length divided by the number of wales per unit length.)
  • the invention is based on the problem of ammonia finishing knitted fabrics under substantially zero tension so as to produce improved finishing knitted fabrics having an attractive appearance and useful textile properties.
  • the problem is solved according to the invention by processing the fabric in substantially tension-free condition while held substantially flat on a carrier from supply means before impregnation means to a take-up device after evaporation means.
  • a machine for carrying out the process of the aforementioned patent has a support for a supply of fabric to be treated, an impregnation bath in which the fabric is impregnated with liquid ammonia, an evaporating unit comprising a rotary heated drum against which the swollen fabric is held by a blanket, and further processing zones in which the fabric may be subjected to heat or steam, prior to being wound up or otherwise collected after the processing.
  • Such a machine is suitable for making the fabric according to the present invention, but it must be arranged that the knitted fabric is supported as it passes through the machine so that it is not under any tension.
  • the knitted fabric may thus be passed through the machine while supported by a woven fabric.
  • a suitable woven fabric support is not affected by the ammonia and may comprise a polyester or polypropylene fabric-which should itself be dimensionally stable, of course, and may comprise a plain woven fabric which may be of relatively open or even mesh-like structure.
  • a roll of knitted fabric can be sent through together with a roll of woven support fabric, or a continuous "belt" of support fabric may be arranged to carry the knitted fabric through the apparatus.
  • a really enterprising finisher might elect to finish a knitted fabric and a suitable woven fabric together, using the woven fabric as a support for the knitted fabric.
  • the support fabric is smooth so that the knitted fabric can pull in with respect thereto without catching or snagging or undue frictional resistance.
  • Figures 1 and 2 illustrate machinery for carrying out an ammonia treatment of knitted cotton or other natural or regenerated cellulosic fabric, comprising a support 11 for a supply of fabric 12 to be treated, an impregnation bath 13 in which the fabric is impregnated with liquid ammonia 14, a hot calender 15 on which the fabric 12 swollen by the ammonia is pressed by a blanket 16, a further processing zone 17 in which the fabric is subjected to heat or steam, and fabric collection means 18 which, as shown, comprise a trolley 19 into which the fabric drops from a folding apparatus 21, but which could equally be a take-up roll arrangement.
  • FIG. 1 there is an additional supply arrangement 22 for a support fabric 23 of woven polyester or polypropylene which is fed through the entire appararatus together with the fabric 12 under treatment so as to support the latter and guide it through the apparatus without any significant lengthwise tension being applied to it.
  • the support fabric is rolled up on a take up arrangement 24 for subsequent re-use.
  • the machinery illustrated will, of course, also have the usual ancillary equipment for recovering evaporated ammonia, and heating and/or cooling means and so on.
  • the speed of the padding machine was 12 m/min. (The padding machine running speed ranges from 7-16 m/min.)
  • the fabric passes through three zones:
  • Fabric shrinkage or dimensional stability may be defined as :
  • the dimensional stability of a knitted fabric is commonly expressed as a shrinkage measurement based on either the original dimensions of a fabric or on the dimensions after a soaking treatment.
  • it has been shown that it is more informative, in terms of assessing the loop configuration to express the fabric dimensions in terms of the k e , k w and k. values, where these constants are given by
  • the stitchlength I was found by measuring unravelled yarn lengths from a known number of courses from the knitted dry-relaxed fabrics, using a Shirley Crimp Tester.
  • the fabric sample size was (60x60) cm 2 .
  • a square of (10x10) cm 2 was measured by means of a smaller template and marked by three points in length and width direction respectively. The average of the three measurements was used in the subsequent calculations.
  • the samples were machine washed according to Swedish Standard SIS 25 12 39 (V4), i.e. washed at 60°C and rinsed. They were hydroextracted for 6 mins, and samples were dried lying flat. The samples were given 13 washing treatments.
  • the dimensional changes were measured after conditioning for at least 4 hours in an atmosphere of 20°C, 65% R.H.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Knitting Of Fabric (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Beans For Foods Or Fodder (AREA)

Claims (6)

1. Verfahren zum Ausrüsten von Gestricken aus Baumwolle, anderen Naturfasern oder Zellwolle, bei dem die Fasern durch Imprägnierung mit flüssigem Ammoniak aufgequollen werden und das Ammoniak aus den noch gequollenen Fasern verdampft wird, dadurch gekennzeichnet, daß das Gestrick (12) kontinuierlich in einem im wesentlichen spannungs- und zugfreien Zustand von Zuführungsmitteln (11) über Imprägnierungsmitteln (13) und Verdampfungsmitteln (15, 17) zu einer Ablage- oder Aufwickelvorrichtung (18) geführt wird, wobei es im wesentlichen flach auf einem Träger (23) gehalten wird.
2. Vorrichtung zum Ausrüsten von Gestricken aus Baumwolle, anderen Naturfasern oder Zellwolle mit Mitteln zum Kontinuierlichen Durchführen des Gestrickes durch eine Imprägnierungszone zum Imprägnieren des Gestrickes mit flüssigem Ammoniak, um die Fasern aufquellen zu lassen und mit Verdampfungsmitteln für die Verdampfung des Ammoniaks aus den noch gequollenen Fasern, dadurch gekennzeichnet, daß ein Träger (23) vorgesehen ist, der mit dem von Zuführungsmitteln (11) gelieferten zu behandelnden Gestrick (12) bis zu einer Ablage- oder Aufwickelvorrichtung (18) über die Imprägnierungszone (13) und die Verdampfungsmittel (15, 17) weiterbefördert wird, um das Gestrick (12) im wesentlichen spannungs- und zugfrei zu tragen.
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Träger (23) ein gewirktes Gewebe aus einem Material aufweist, das nicht in schädlicher Weise durch das Ammoniak beeinträchtigt wird.
4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß das gewirkte Gewebe aus Polyester oder Polypropylene besteht.
5. Vorrichtung nach einem der Ansprüche 2 bis 4, cadurch gekennzeichnet, daß der Träger (23) ein laufendes Band aufweist.
6. Vorrichtung nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß der Träger (23) ein Gewebe aufweist, das zusammen mit dem Gestrick behandelt wird.
EP82303173A 1981-06-22 1982-06-17 Verfahren und Vorrichtung zum Ausrüsten von Gestricken aus Baumwolle Expired EP0068748B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82303173T ATE15511T1 (de) 1981-06-22 1982-06-17 Verfahren und vorrichtung zum ausruesten von gestricken aus baumwolle.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO812122 1981-06-22
NO812122A NO152759C (no) 1981-06-22 1981-06-22 Fremgangsmaate for etterbehandling av strikket stoff av bomull eller annet naturlig eller regenerert cellulosemateriale

Publications (2)

Publication Number Publication Date
EP0068748A1 EP0068748A1 (de) 1983-01-05
EP0068748B1 true EP0068748B1 (de) 1985-09-11

Family

ID=19886134

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82303173A Expired EP0068748B1 (de) 1981-06-22 1982-06-17 Verfahren und Vorrichtung zum Ausrüsten von Gestricken aus Baumwolle

Country Status (5)

Country Link
EP (1) EP0068748B1 (de)
JP (1) JPS5854055A (de)
AT (1) ATE15511T1 (de)
DE (1) DE3266173D1 (de)
NO (1) NO152759C (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9303425D0 (en) * 1993-02-20 1993-04-07 Univ Leeds Improvements relating to knitted fabrics
EP1046741B1 (de) 1998-01-08 2005-06-29 Asahi Kasei Kabushiki Kaisha Verfahren zur behandlung von kulierware
CN1300409C (zh) * 2005-08-26 2007-02-14 宁波雅戈尔针织染整有限公司 一种耐洗针织面料的加工方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA765735A (en) * 1967-08-22 Sentralinstitutt For Industriell Forskning Process for the treatment of fabrics containing cellulose fibers with liquid ammonia

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IE34124B1 (en) * 1969-05-08 1975-02-05 Tedeco Textile Dev Co As Apparatus for treatment of fabrics with liquid ammonia
FR2098789A5 (en) * 1970-07-28 1972-03-10 Lefebvre Jean Shrunk knitted fabric - used as base for embroidery
AU465072B2 (en) * 1971-01-14 1975-09-18 Cluett, Peabody & Co., Inc Method and apparatus for quickly treating fabrics with liquid ammonia
US3980429A (en) * 1971-01-14 1976-09-14 Cluett, Peabody & Co., Inc. Continuous process for the liquid ammonia treatment of fabrics

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA765735A (en) * 1967-08-22 Sentralinstitutt For Industriell Forskning Process for the treatment of fabrics containing cellulose fibers with liquid ammonia

Also Published As

Publication number Publication date
DE3266173D1 (en) 1985-10-17
NO152759C (no) 1985-11-13
JPS5854055A (ja) 1983-03-30
NO812122L (no) 1982-12-23
EP0068748A1 (de) 1983-01-05
NO152759B (no) 1985-08-05
ATE15511T1 (de) 1985-09-15

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