Classifications

• • 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
  • D06B21/00—Successive treatments of textile materials by liquids, gases or vapours
• • 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
  • D06C25/00—Treating selvedges or other edges, e.g. stiffening

Definitions

• the invention relates to a process for dyeing a knitted fabric web containing cellulose fibers, adhesive strips being applied to the edge regions adjacent to the longitudinal edges of the web and stiffened by drying before dyeing, the web being dyed in the dyeing pad and then in a dyeing hot flue is dried and fixed in color.
• Knitwear is generally made as a tube.
• the fabric is created by cutting the tube parallel to its longitudinal axis on a straight line as possible. The resulting cut edges tend to curl up.
• Consisting cellulose fibers means that the knitted fabric consists entirely or partially of cellulose fibers.
• DE 32 38 378 A1 discloses various forms of edging glue lines or stiffening zones on the edge of a knitted fabric web that tends to curl.
• DE 195 22 124 A1 describes edge gluing on a stenter. Note that the hot melt adhesive is applied to the edges of the knitted fabric in the tenter frame outlet.
• the invention has for its object to provide a dyeing system for the continuous dyeing of knitwear, which replaces the previously usual time-consuming process by the pull-out method or by the cold pad batch principle when dyeing cellulose fibers.
• a dyeing system for the continuous dyeing of knitwear which replaces the previously usual time-consuming process by the pull-out method or by the cold pad batch principle when dyeing cellulose fibers.
• a longitudinally and broadly tension-free delivery of the dyed and dried fabric web can preferably follow.
• the knitted fabric in order to ensure that a knitted fabric web containing cellulose fibers can be continuously dyed with the help of a foulard, and can be dried and fixed in line in a downstream dyeing hot water, the knitted fabric is first gripped on the longitudinal edges in continuously conveying tension chains, then, adjacent to the longitudinal edges held in the tension chains, the glue stiffening the longitudinal edge areas is applied and then (despite being released from the tension chains) spread out continuously, i.e. in line, through the dyeing pad and the dyeing hot water - in principle like a woven fabric.
• the top and / or bottom rollers of the hot flue should preferably be driven.
• the fabric web is guided up and down in a meandering manner over guide rollers with a certain longitudinal pull.
• the hotflue there is a series of guide rollers essentially parallel to each other (so-called upper and lower rollers) in each case approximately in a common plane in the lower area and in the upper area.
• upper and lower rollers Generally heated air is blown into the fabric web loops stretched between two upper and two lower guide rollers from above and below for drying and fixing.
• a fabric web cannot be moved through such a hot flue without a certain longitudinal pull.
• the longitudinal pull means that the web of fabric in the machine (when running over the guide rollers) does not remain spread out, but rather that the edges become Rolling through the individual loops of the hot flue keep rolling in and in extreme cases the spread web becomes a strand.
• the advantages of the hot flue do not come into play, so that knitted goods cannot conventionally be dried in a hot flue and fixed in color.
• the edge regions which are narrow relative to the overall width of the fabric web, with glue cross marks or similar stabilizing agents.
• this stiffening of the narrow edge areas alone ensures that the knitted fabric web does not converge into one strand in the hot flue, but rather passes through the hot flue like a fabric web.
• the glue traces on the two edges of the web are not continuous but interrupted. For example, (viewed in the direction of the fabric web), each should be based on a unit length of a glued cross stroke follow about two units of length of a glue-free area. In practice, such a ratio of the order of 1: 2 has proven itself.
• the width of the glue track depends on the distance between the upper and lower rollers of the dyeing hot melt. The greater the distance, the wider the glue strip must be made to prevent the stiffened edges from rolling in or turning over on the way between two rollers. It has been found that this edge curl is prevented if the width of the glue strips (that is the length of the glue lines), starting from the edge of the fabric web, is greater than approximately 1/25 of the center distance between the upper and lower hotfluid rollers. The width of the glue strip should be at least approx. 1 cm.
• the longitudinal tensile force acting on the fabric is approximately uniform everywhere in the hot flue, that is to say in every product loop.
• drying and color fixing means both the color fixing during drying and the drying and subsequent fixing. If the fabric web is dry and fixed, it can - as is usual with knitwear - be free of longitudinal and broad tension, for example via a belt conveyor Alternatively, the fabric web can first be treated essentially for fixation in the hot flue and washed and dried in line with continuous forwarding and, if necessary, delivered longitudinally and without tension. Details of the invention will be explained on the basis of the accompanying illustration of an exemplary embodiment of the system concept according to the invention for the continuous dyeing of a spread knitted fabric web which at least partially consists of cellulose fibers. Show it
• Figure 1 is a system in a schematic vertical longitudinal section. and FIG. 2 shows a plan view of a part of the installation according to FIG. 1.
• the fabric web 1 runs in the transport direction 2 (longitudinal direction of the fabric web) from the roll 3 through a spreading device 4 in a type of tensioning frame 5, which is also shown in principle in FIG. 2 in plan view.
• the tenter frame 5 has two tension chains 6 and 7, which are equipped with needles 8 (alternatively, clips are also possible) for needling the edge regions 9 onto the longitudinal edges 10 of the fabric web 1.
• Each of the tension chains runs endlessly over chain wheels 11 (with a horizontal or vertical wheel axis 12).
• the length b of the glue transverse lines should be small compared to the total width B of the fabric web 1 and should be made approximately equal to 1/25 of the distance between the top and bottom rollers of the hot flue described below.
• the applied glue is stiffened in an edge drying station 14 adjoining in the transport direction 2. As a result, the edge regions 9 lose their flexibility customary for knitwear, so that the edges no longer curl at the outlet 15 of the tensioning frame 5 after the fabric web 1 has been released.
• the fabric web 1 is then brought via a guide roller 16 into a dyeing pad 17 with an immersion roller 18 and then a pair of squeeze rollers 19 to the inlet slot 20 of a dyeing hot melt denoted overall by 21.
• the fabric web 1 runs over a deflection roller 22 and meanders downwards and upwards over two guide roller series 23 and 24, each of which consists of a plurality of guide rollers, namely bottom rollers 25 and top rollers 26.
• the fabric web loops 27 stretched between two guide rolls 25, 26 of a roll series 23, 24 are acted upon by heated air from blowing nozzles 28.
• the fabric web 1 passes via a deflecting roller 29 and an outlet slot 30 into an outlet area 31, for example with a carrying belt 32, for delivering the web of fabric 1 onto a roll 33 without longitudinal or broad tension.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Materials Engineering (AREA)
• Treatment Of Fiber Materials (AREA)
• Knitting Of Fabric (AREA)
• Coloring (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=32841845

Family Applications (1)

Country Status (8)

Families Citing this family (4)

Family Cites Families (7)

• 2003
  • 2003-02-22 DE DE10307915A patent/DE10307915B4/de not_active Expired - Fee Related
• 2004
  • 2004-02-13 JP JP2006501498A patent/JP2006518426A/ja active Pending
  • 2004-02-13 US US10/546,474 patent/US20060260073A1/en not_active Abandoned
  • 2004-02-13 BR BR0407440-8A patent/BRPI0407440A/pt not_active IP Right Cessation
  • 2004-02-13 KR KR1020057015284A patent/KR20050106015A/ko not_active Application Discontinuation
  • 2004-02-13 CN CNB2004800047479A patent/CN100335710C/zh not_active Expired - Fee Related
  • 2004-02-13 EP EP04710786A patent/EP1597422A1/de not_active Withdrawn
  • 2004-02-13 WO PCT/DE2004/000257 patent/WO2004076736A1/de active Application Filing

Non-Patent Citations (1)

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