Classifications

• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
  • D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
  • D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
  • D01D10/06—Washing or drying
• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
  • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
  • D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M7/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made of other substances with subsequent freeing of the treated goods from the treating medium, e.g. swelling, e.g. polyolefins
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
  • D06M2200/40—Reduced friction resistance, lubricant properties; Sizing compositions

Definitions

• finishing materials are applied. Usually, this application is made after spinning and deacidifying, desulfurating, bleaching, washing the threads or fibers, by rinsing or spraying them with or passing them through a finishing bath. Thereafter, the greatest part of the adhering liquid is removed mechanically, as by centrifuging or squeezing so that in the drying process which follows, it will not be necessary to evaporate excessively large quantities of Water. In these processes, a large loss of finishing substances cannot be avoided. Furthermore, employing these finishing processes, the later operations often were unsatisfactory. I
• finishing compositions e.g. sulfonates of tallow, esters of polyglycols and fatty acids, emulsions of mineral oils, or mixtures of these components.
• a particular object is to provide a process which reduces the losses of finishing substances.
• Another object is to provide a finishing process which improves the subsequent operations, e.g. coiling rayon filaments or producing yarns from staple fibers.
• An additional object is to provide a process wherein filaments are simultaneously or concurrently finished and moisture-conditioned, so that they have the desired moisture or Water content.
• Another object is to provide a flexible two-stage finishing process, wherein drying of the filaments may take place between the finishing stages or subsequent to both stages, as desired.
• a more particular object is to provide a process wherein a relatively very dilute aqueous finishing emulsion is first applied to the filaments, the emulsion being very dilute as compared to the standard or prior emulsions applied, so that losses of the emulsion represent reduced losses of the finishing substances corresponding to their decreased concentration, and then a relatively concentrated aqueous finishing emulsion is applied for precise application to the filaments without losses, to provide on the filaments the quantity of finishing substances required for satisfactory execution of the subsequent operations.
• the filaments are treated or contacted following to the-washing process with a dilute finishing liquid composition, excess liquid is mechanically separated, and the filaments are treated with a concentrated finishing liquid composition.
• the first application is with a .composition which is.
• the second application is with a finishing composition or concentrate which is relatively concentrated with respect to the usual finishing compositions applied, and there are preferably about 70 to 200 grams per liter of finishing substances in the concentrate.
• the concentration is selected within this range according to the desired amount of finishing application and the desired amount of moisture-conditioning.
• the mechanical separation of excess liquid subsequent to the first application preferably takes place by centrifuging or squeezing, with no concentration such as by drying.
• the filaments are dried either between the two finishing stages or treatments, following the mechanical separation of excess liquid, or following both of them. In either event, the usual volume of finishing liquid composition is applied in the first stage, but the concentration is much less than usual.
• the second finishing is preferably carried out so that the filaments are simultaneously moisture-conditioned without employing and with no necessity for a subsequent drying or moistening operation. Operating in this manner, the concentration of the second finishing composition is adjusted so as to impart the desired moisture content to the filaments while applying the desired amount of finishing substances.
• the total amount of finishing substances applied in the first and second stages corresponds to that usually applied in one operation according to the prior processes.
• the application of the dilute composition is as before, by rinsing or spraying or passing through a finishing bath.
• the second finishing composition may be applied after drying by spraying, rinsing or moistening with moist rollers.
• the two finishing stages can be carried out in the absence of a drying operation or prior to drying, with intervening mechanical separation of excess liquid as described above, and the filaments thus processed are more advantageously employed in the subsequent operations than when operating according to the prior procedures.
• the resulting yarn is more uniform.
• the filaments are dried, the drying being carried out employing the usual moistening zone.
• finishing conditions are those conventionally employed, with the described new conditions according to the invention.
• the compositions are applied either at about room temperature, about 15-25 C., or at about 5060 C., depending upon the finishing materials.
• the drying conditions are those usually employed e.g. in
• the process of this invention is suitable for every kind of artificial filaments, such as filaments and staple fibers of regenerated cellulose, casein or alginates.
• the kind of finishing material must be adjusted to the kind of filament, thickness, intended use, etc.
• the first step of the process is carried out with the usual finishing machinery.
• the second step of the process is carried out while the more or less open staple fiber fleece leaves the dryer. It is also possible to insert this second step between the dryer and the packing of the staple fibers, for instance after the opening operation.
• the first operating step can be carried out in the same manner as in the case of staple fibers by spraying, rinsing, or passing through a finishing bath.
• the second step also can be carried out before or after the drying operation. In the case of thick cables it is necessary to lay them out'wid'e during the second step in order to obtain even distribution of the finishing material. It is advantageous to use moistening rollers in the case of cables, thread groups, etc.
• Example 1 A fiber fleece of regenerated cellulose is rinsed after the deacidifying, desulfurating, bleaching and washing process with a finishing bath containing 0.1 to 0.2 grams per liter of finishing material, as sulfonate of tallow, at 50 to 60 C. Excess liquid is separated from the filaments by centrifuging to a moisture content of 120 to 130%, and the filaments are then dried without the use of a moistening zone. At the exit from the dryer, the fiber fleece is sprayed with a finishing emulsion concentrate of 50 grams per liter of room temperature, the concentrate consisting of /3 of sulfonate of tallow and /3 of polyglycol ester of stearine acid.
• Example 2 A fiber fleece is finished, as in Example 1, following to the Washing operation with a dilute finishing bath containing 0.1 to 0.2 gram per liter of finishing material at 50 to 60 C. After squeezing the fiber fleece to a moisture content of 120 to 130%, the fleece is passed through a pair of rollers on which is applied a finishing emulsion of 100 grams per liter, containing sulfonate of tallow and /3 polyglycol ester of stearine acid, at 50 to 60 C. in such a quantity that 0.2 kg. of finishing substances are applied on 100 kg. of fiber. Thereafter, the filaments are dried in the usual manner.
• Example 3 A thread cable of 300,000 denier of regenerated cellulose is passed after leaving the washing trough through a bath containing 0.1 to 0.2 gram per liter of finishing material, as sulfonate of tallow, at 50 to 60 C. and it is then squeezed and dried to 6% moisture content without the use of a moistening zone.
• the thread cable is passed over a spreading roller and then finished with moistening rollers at room temperature with a finishing composition consisting of /3 sulfonate of tallow, /3 of polyglycol ester of stearine acid and /3 of mineral oil.
• a finishing composition consisting of /3 sulfonate of tallow, /3 of polyglycol ester of stearine acid and /3 of mineral oil.
• the invention thus provides a new and improved twostage finishing process which results in substantial savings of finishing substances and provides improvements in the operations.
• the filaments may be moisture-conditioned simultaneously with application of the finishing substances.
• the process is adaptable to intervening or subsequent drying, and the two stages combine very advantageously to reduce losses while providing effective application of the finishing substances.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Chemical Or Physical Treatment Of Fibers (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=6723604

Family Applications (1)

Country Status (6)

Cited By (2)

Families Citing this family (1)

Citations (7)

• 0
  • BE BE541329D patent/BE541329A/xx unknown
  • DE DENDAT1075273D patent/DE1075273B/de active Pending
  • NL NL105866D patent/NL105866C/xx active
  • NL NL201056D patent/NL201056A/xx unknown
• 1955
  • 1955-09-27 FR FR1131701D patent/FR1131701A/fr not_active Expired
  • 1955-10-12 US US540171A patent/US2904454A/en not_active Expired - Lifetime
  • 1955-10-17 GB GB29555/55A patent/GB810040A/en not_active Expired

Patent Citations (7)

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