US3811834A - Method and apparatus for finishing cellulose-containing textile materials and textile materials thus produced - Google Patents

Method and apparatus for finishing cellulose-containing textile materials and textile materials thus produced Download PDF

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Publication number
US3811834A
US3811834A US00126723A US12672371A US3811834A US 3811834 A US3811834 A US 3811834A US 00126723 A US00126723 A US 00126723A US 12672371 A US12672371 A US 12672371A US 3811834 A US3811834 A US 3811834A
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Prior art keywords
bath
textile material
finishing
textile
treatment bath
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US00126723A
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English (en)
Inventor
M Schwemmer
H Bors
A Goetz
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Triatex International AG fueur Textile Forschung und Entwicklung
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Triatex International AG fueur Textile Forschung und Entwicklung
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
    • F23N5/105—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples using electrical or electromechanical means
    • 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
    • D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
    • D06B1/10—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by contact with a member carrying the treating material
    • D06B1/14—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by contact with a member carrying the treating material with a roller
    • 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
    • D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
    • D06B23/24—Means for regulating the amount of treating material picked up by the textile material during its treatment
    • D06B23/26—Means for regulating the amount of treating material picked up by the textile material during its treatment in response to a test conducted on the textile material
    • 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
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/12—Aldehydes; Ketones
    • D06M13/127—Mono-aldehydes, e.g. formaldehyde; Monoketones
    • 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
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/39—Aldehyde resins; Ketone resins; Polyacetals
    • D06M15/423—Amino-aldehyde resins
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S8/00—Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
    • Y10S8/02—Vinyl sulfones and precursors thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S8/00—Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
    • Y10S8/04—Polyester fibers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S8/00—Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
    • Y10S8/08—Oxirane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S8/00—Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
    • Y10S8/11—Isocyanate and carbonate modification of fibers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2369—Coating or impregnation improves elasticity, bendability, resiliency, flexibility, or shape retention of the fabric
    • Y10T442/2385—Improves shrink resistance
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2369—Coating or impregnation improves elasticity, bendability, resiliency, flexibility, or shape retention of the fabric
    • Y10T442/2393—Coating or impregnation provides crease-resistance or wash and wear characteristics
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2762—Coated or impregnated natural fiber fabric [e.g., cotton, wool, silk, linen, etc.]
    • Y10T442/277—Coated or impregnated cellulosic fiber fabric

Definitions

  • the equipment for practising the invention to produce these finished textile products or materials embodies at least one applicator device which preferably is constituted by at least one applicator or kiss roll for applying the finishing bath, there being further provided control means for regulating the rotational speed of such kiss roll to precisely regulate the amount of applied bath.
  • the present invention broadly relates to the finishing of cellulose-containing textile materials to impart improved use properties thereto.
  • the present invention concerns a new and improved method of finishing cellulose-containing textile materials, especially to render such shrinkage resistant, crease resistant and to impart thereto permanent press properties, also to render such flameproof and hydrophobic, through the use of reactive finishing agents, drying of the textile material occurring following application of the finishing agent.
  • This invention also deals with novel equipment for the performance of the inventive method and to textile products manufactured ac,- cording to the inventive method aspects.
  • the finishing technique of the present invention contemplates application of a bath containing the reactive finishing agent or agents, possibly also auxiliary agents such as catalysts, softeners and so forth, to the textile material in such manner that the textile material is imbued as uniformly as possible and at all locations thereof with the finishing bath. It is to be recognized that this invention is not concerned with a method contemplating application of the finishing agent to only one side of the textile material wherein such applied finishing agent is intended to remain as extensively as possible at'the surface of such textile material.
  • reactive finishing agent or agents is intended to designate finishing agents which tend to react with the OH-groups of the cellulose molecules, possibly while cross-linking the fibres. Typical examples of such reactive finishing agents have been given throughout this disclosure and are well known in the textile finishing art.
  • reactive finishing agents with cellulosecontaining textile materials can occur fundamentally in accordance with two different basic techniques. Firstly, in accordance with the so-called dry curing or crosslinking technique, which in its broadest sense also can encompass the modified technique of moist curing or cross-linking, and secondly, in accordance with the wet curing or cross-linking technique.
  • dry curing or crosslinking technique which in its broadest sense also can encompass the modified technique of moist curing or cross-linking
  • wet curing or cross-linking technique When employing the first technique class noted above there is undertaken a complete or partial drying of the impregnated textile material after application of at least the cross-linking chemicals.
  • the second technique class contemplates occurrence of the cross-linking reactions of the system, composed of cross-linking chemicals and the cellulose, after application of the chemi-' cals while still in wet condition and without intermediate drying'of the textile material; to which end, as to general rule, rather long dwell or residence times are necessary.
  • the present invention has for one of its primary objectives to improve the techniques of the first-mentioned method classification discussed above.
  • a further and more specific objective is toprovide an improved finishing method for textile materials which enjoys the notable advantage of using less finishing agent, in fact also even less auxiliary agents, yet still obtaining at least comparable if not better finishing effects than obtained by prior art finishing techniques requiring the use of considerably greater quantities of finishing agents and auxiliary agents.
  • Another equally significant object of the present invention is concerned with a textile finishing technique wherein an essentially dry cellulose-containing textile material has applied thereto at least one finishing agent which is reactive for cellulose, application of the quantitative amount of applied finishing agent being controlled, with drying and curing following the application of the finishing agent to the textile material.
  • Yet a further significant object of the present invention resides in the provision of new and improved type 'of equipment readily lending itself to the performance of the inventive method.
  • a further noteworthy object of the present invention is the economical production of finished textile products in accordance with the method aspects of the invention.
  • the inventive method of finishing cellulose-containing textile materials through continuous application of individual bath components or a single total bath, containing at least one reactive finishing agent for cellulose, to the essentially dry textile material followed by subsequent partial or complete drying of such textile material contemplates that the partial baths or total bath are applied in such quantities to the textile material that the percentual total of the applied bath material together with themoisture contained in the textile material, based upon the weight of the dry textile material, at most amounts to ([W/ 40), wherein W represents in percent the water retention capacity of the textile material determined in accordance with ASTM-D24- 0265T.
  • the amount of applied finishing bath is controlled such that the thus treated textile material is'essentially without any squeezable excess thereof, this applied amount of finishing bath generally being about 10 to 40 weight percent less than the amount of finishing bath applied by conventional techniques, and the applied amount of finishing agent being about 10 to 60 percent less than the amount of finishing agent applied by conventional techniques.
  • the invention also concerns itself with an improved apparatus for finishing cellulose-containing textile materials which comprises at least one applicator device for the bath containing the finishing agent, and possibly the catalyst and auxiliary agents, which includes at least one applicator or kiss roll.
  • a control mechanism serves to control the rotational speed of such applicator roll to thereby also control the applied quantity of finishing bath.
  • the roll is located in a vat at the lower region of which there is supplied through one or more openings the finishing bath. Detectors at the input and output regions of the vat cooperate to determine the applied quantity of bath, and thus can serve to regulate via the control mechanism the surface or rotational speed of the applieator roll.
  • a heater unit operably associated with the vat ensures that a desired viscosity of the bath is maintained.
  • a detector mechanism associated with the dryer determines the residual moisture content of the textile material, using the determined value to control throughput speed of such textile material.
  • Impregnation of the textile material to be finished typically occurs in the prior art techniques through immersion or imbuing thereofin a bath containing the finishing agent. catalysts and, if desired, further additives such as softeners and/or dyes and/or wetting agents.
  • a portion of the absorbed bath is then mechanically removed from the textile material, for instance by suction, squeezing-off or centrifuging, whereupon drying is initiated.
  • the take-up of bath by the textile material occurs automatically since during immersion of the material an uncontrolled bath excess is taken-up.
  • a portion of the bath is removed. Consequently, an uncontrolled quantity of bath remains at the textile material, or, at the very best, a quantity of bath which is obviously very difficult to control.
  • this quantitative amount of bath is dependent upon the type of textile material processed and its pretreatment as well as upon its formation during the spinning and weaving operations, and, on the other hand, upon the physical properties of the bath itself as well as upon the effectiveness of the employed mechanical bath removal hardware.
  • the take-up of treatment bath is typically in the order of magnitude between 60 percent and 70 percent based upon the weight of the dry textile material when utilizing conventional operating techniques wherein impregnation occurs through complete imbuing of the textile material in the bath by immersion, followed by squeezing-off excess bath one or more times by passing the textile material through appropriate squeeze rolls.
  • the finishing bath is applied in a limited amount to the essentially or substantially dry textile material (the expression essentially or substantially dry textile material" as used in this application denotes a textile material dried to contain a residual moisture content normally less than l0 percent, based upon dry fabric weight), and specifically in a much lesser amount than the heretofore usual quantity, which textile material is thereafter dried, if desired following a dwell period.
  • essentially or substantially dry textile material denotes a textile material dried to contain a residual moisture content normally less than l0 percent, based upon dry fabric weight
  • the method of the invention for finishing cellulosecontaining textile material by continuous application of partial baths or a single total bath, containing at least one reactive finishing agent for cellulose, to the textile material which is essentially dry and following such application contemplates partial or complete drying of the textile material, is more specifically manifested by the features that the partial baths or total bath is applied in such quantities to the textile material that the total percentual application of bath together with the moisture contained in the textile material, as related to the weight of the dry textile material, at most amounts to ([WllSO] 40), wherein W represents in percent the water retention capacity of the textile material determined according to ASTM-D2402-65T.
  • the just-mentioned upper limit of the applied amount of bath corresponds to an applied quantity of bath which must be below by about l0 to 40 percent by weight of that quantity which remains in the textile material during conventional application techniques and with subsequent squeezing between squeeze rolls, such as the standard padding by squeeze rolls, known as dip-nip technique.
  • the inventive technique apart from providing extremely favourable conditions for carrying out the drying process more economically than with conventional padding techniques, further affords the important advantage of considerably improved utilization of the .finishing agent and which could not be anticipated or expected in any way whatsoever by those versed in the art. In contrast to the standard operating techniques this improvement manifests itself in the form of a very marked increase in the desired finishing effect with the same expenditure of finishing agent related to the weight of the textile material. This totally new and unexpected result can also be taken advantage of in terms that, in comparison with conventional finishing techniques, alesser quantity of finishing agent need be apcally occurs with conventional impregnation techniques.
  • the inventive method reduces the tendency .of migration of the .dyesduring drying. Therefore it is possibleto get by withthe use of smaller quantities of adjuvants of products tending to mitigate against dye migration or, infact, tocompletely dispense with the use of such adjuvants. This affords much improved conditions for obtaining'much softer 4 textile products.
  • the inventive method additionally can improve the effect of softening agents, for instance increaseof the wear resistance of cross-linked cellulose.
  • the invention affords the possibility of being able to obtainat leastthe same effect but importantly with the use-of lesser amounts ofauxiliary finishing agents such as wetting agents,'antifoaming agents, softeners, lubricants, hand modifiers, optical whiteners, dyestuffs, binders for dyestuff-pigments, flameproofing agents, water: repellents, soiland oilrelease agents, just to mention a fewii'fhese auxiliary agents are not limiting features of the invention andare well known in'the textile finishing art and any of the conventional employed agents maybe used infthe practice of this invention.
  • auxiliary finishing agents such as wetting agents,'antifoaming agents, softeners, lubricants, hand modifiers, optical whiteners, dyestuffs, binders for dyestuff-pigments, flameproofing agents, water: repellents, soiland oilrelease agents, just to mention a fewii'fhese auxiliary agents are not limiting features of the invention andare well known in'the textile finishing
  • these techniques are not suitable for continuous operation. Additionally, these techniques require a very intensive afterwashing in contrast to the conventional dry curing or cross-linking technique. This is the case not only for removing non-bound finishing agents, rather under certain circumstances also for the purpose of eliminating the catalysts which might disturb the following drying operations.
  • inventive method is applicable to textile materials in almost every form, such as yarn, yarn strands, fabric, knitted goods, felt, and so forth, preferably in the form of flat textile structures, such as fabrics or knitted fabrics which consists entirely or partially of native, regenerated or modified cellulose.
  • finishing agents of this type are well known in large numbers in the textile finishing art. It has in fact been determined that it is possible to increase the finishing effect in accordance with the inventive method by using finishing agents of the most different make-up or composition.
  • the selection of the finishing agent is not critical to the invention and, thus, can be undertaken on the basis of typically observed criteria, such as permanence, chlorine resistance, affecting or influencing the color fastness of dyeing, hydrolysis resistance, costs and so forth.
  • N-methylol compounds containing nitrogen-bound methylol groups or alkoxymethylol groups especially derivatives of urea and thiourea and their derivatives, of cyclic urea derivatives in the form of heterocyclic and 6-rings and their hydroxyor oxo-derivatives of bicyclic heterocompounds, further, derivatives of dicyandiamide, guanidine, carbamates, triazine derivatives and mixtures of such compounds.
  • nitrogen-free formaldehyde cross-linking products especially formed from the reaction with low molecular alcohols, alone or in mixture with one or more of the mentioned N-methylols.
  • cross-linking agents formed on the basis of higher saturated or unsaturated aldehydes and their derivatives. Also'useful are products possessing reactive epoxy-, isocyanate-, vinylsulphone-, halogenhydrineor carboxylic acid-groups'lt is also possible to utilize in accordance with the inventive method so-called ambivalent cross-linking agents of the type N-methylolacrylamide, catalyzed in a first step to be acidic and in a second step to be alkaline.
  • the crosslinking agents are those typically used in conventional processing methods found in the textile finishing industry for the production of wash-wear and permanent press cellulosic fabrics and are also well known as creaseproofing agents for cellulose. Further typical examples are dimethylol urea, dimethylol ethylene urea, dimethylol propylene urea and methylolated derivatives of propylene urea, N,N-dimethylol-4,5-dihydroxy ethylene urea, dimethylol hydroxy ethyl carbamate, bis-methoxymethyl-ethyl carbamate, trisl-aziridinyl) phosphine oxide, vinyl cyclohexene diepoxide, formaldehyde, methylol and methylolated triazine derivatives, acetals and the like, and alkylated derivatives of such compounds and mixtures thereof. It is again indicated that the nature of the cross-linking agent is in
  • the concentration of the finishing agent or agents in the employed bath is dependent upon the degree of the desired finishing effect.
  • a particularly surprising advantage of the inventive method resides in the fact that, from the standpoint of weight, considerably less finishing agent, based upon the textile material, is required for achieving a certain degree of finishing. It has been found in order to obtain numerically the same functional effect, for instance dry crease angle, wash-wear rating (MONSANTO, AATCC Tentative Test Method 88Al964T) and so forth, generally when practising the inventive method there is only required about 40 to 90 percent by weight of the quantity of finishing agent heretofore required for achieving the corresponding momentary effect, particularly only 50-75 percent. Consequently, there is achieved considerable savings in cost apart from the more rapid carrying out of the method. Also, as already mentioned, when using the same quantities of finishing agent as heretofore there is obtained a considerably better finishing effect.
  • the cross-linking agent is treated with a suitable catalyst to activate such agent.
  • Catalysts useful in the practice of the invention are any of those known in the textile field and commonly used with cross-linking agents of the type enumerated above.
  • useful catalysts which come under consideration are the known acidic or potentially acidic compounds typically used for the reaction of reactive finishing agents with cellulose.
  • salts of stronger acids and weaker bases such as magnesium chloride, zinc chloride, zinc nitrate, aluminum chloride, calcium chloride, acid reacting ammoniumand amine salts, additionally inorganic or organic acids alone or in mixture with one or more of the mentioned salts.
  • Suitable curing catalysts are zinc fluoroborate, ammonium chloride, ammonium phosphate, sodium fluoroborate, isopropanolamine hydrochloride, benzyldimethylamine oxalate, or mixtures thereof and with organic acids.
  • concentration of the catalysts is chosen so as to be in a range suitable for the particular momentarily employed system.
  • the amount of catalyst applied to the fabric is not narrowly critical and can range from about 2 weight percent to about 55 weight percent of the cross-linking agent in the fabric.
  • finishing agent and catalyst are applied to the textile material from the same bath.
  • the total quantity of applied bath including the still present or separately applied water must be below the recited maximum value ([W*/ 40), based upon the weight of the dry textile material. it is also possible to apply a portion of the liquid required for the total bath application prior to and/or after the application of finishing agent and catalyst to the textile material.
  • the catalyst also can be applied in gaseous or liquid form after drying.
  • finishing bath auxiliary agents such as, for example, conventional hudrophobic-, softening-, leveling
  • the inventive effect also occurs even if the bath consists partially or predominently of nonaqueous liquids. It is important to mention that in contrast to-the already known techniques achievement of the additional effect is not dependent upon maintaining a certain maximum water content of the bath.
  • finishing bath or the partial baths is undertaken according to the invention, for instance, by spraying, roll kissing, brushing, imprinting, or trensferring the bath through imbued fabrics or other absorbent materials.
  • vats combined with rubberized squeezing rollers for the removal of the bath excess which can be squeezed-off are not suitable for carrying out the inventive method.
  • these conventional devices commonly known as padding machines, apply the bath in amounts greatly exceeding the upperv boundary value of [w/150 ⁇ 40).
  • the applicator or kiss roll technique when using one or a number of kiss rolls has been found to be particularly suitable.
  • These rolls or rollers are of the type which are partially immersed in the treatment bath to be applied and owing to rotation thereof are continuously covered with a thin bath film.
  • the textile material undergoing treatment is guided over these rolls, contacting the surface of such-rolls over the entire width thereof and, in the direction of travel of the material, contacting such rolls along a path extending over a number of centimeters, approximately over one-quarter of the roller periphery.
  • the speed of travel of the textile web is greater than the peripheral velocity or surface speed of the applicator or kiss rolls, so that the liquid film present at the zone of the contact surface is continuously wiped away from the kiss roll or rolls by the textile web or material.
  • the textile material When undergoing treatment the textile material can be introduced into the depicted treatment equipment through the agency of a suitable speed-controlled infeed mechanism 12, here shown as incorporating the infeed or delivery rolls 14. Rolls 14 can be conveniently driven at variable desired rotational speeds in any suitable manner. Downstream of the infeed meachnism 12, in the direction of web travel, there are successively arranged a pair of selvedge guide rolls 11, followed by a detector mechanism 26 to be considered shortly, a linear guide roll 16, and curved expander roll means 18, here shown as three curved rolls, between which travels the textile web, as shown.
  • the curved expander rolls l8 serve to deliver the textile material over the kiss or applicator roll20 in a condition as free as possible of creases or folds resulting in uniform application of the treatment bath 22 located within the vat or vessel 24.
  • a first and second linear expander roll 32 as shown, each such linear roll 32 possessing a helical surface and each being rotatably driven in desired rotational sense by the separate drive means 15 as well as being vertically adjustable to control contact of the fabric or web 10 with the applicator roll 20.
  • mechanism 23 of any suitable construction serves to lower the vat to control the immersion depth of the applicator roll 20 therein and for cleaning purposes.
  • the detector mechanism 26 constitutes a standard reference detector unit embodying two conventional measuring or detector heads which measure the fabric weight and the moisture content of the fabric, respectively, to determine the correct weight of the dry fabric or web, measurement occurring prior to entry of the web into the finishing bath 22.
  • Detector 26 delivers the measured information in the form of suitable electrical signals via conductor 28 to a suitable control unit 30.
  • the fabric Upon leaving the zone of the first linear expander roll 32 the fabric contacts the surface of the applicator or kiss roll 20 continuously rotating within bath vat 24, the rotational axis of roll 20 preferably being located above the normal bath level.
  • the pair of linear expander rolls 32 to each side of the rotational axis of the applicator roll 20 urge the web or fabric 10 into proper wiping contact with the surface of such applicator roll, preferably along about one quarter of its peripheral surface, thus picking-up the thin film of bath continuously present on the applicator roll surface, a part of which is always immersed in the bath. In this way a controlled quantity of bath is uniformly applied over the full width of the textile material in controlled manner due to the action of the applicator roll likeweise extending over the full width of the textile material undergoing treatment.
  • Detector mechanism 34 After the required amount of finishing bath has been applied to the textile material 10 it moves into the operable zone of a second detector mechanism 34, serving to measure the applied amount of finishing agent as well as the fabric weight. Detector mechanism 34 then likewise delivers a measurement signal via conductor 36 to the control unit 30. At the control unit 30 the respective signals received from the first detector 26 and the second detector 34 are compared with one another and processed and control unit 30 then delivers an appropriate control signal to drive mechanism 38, for instance a suitable drive motor, serving to drive the applicator roll 20 at controlled variable peripheral or surface speeds.
  • drive mechanism 38 for instance a suitable drive motor, serving to drive the applicator roll 20 at controlled variable peripheral or surface speeds.
  • this control unit 30 has determined via the detectors 26, 34 that'the textile web leaving the zone of the kiss or applicator roll has applied thereto insufficient quantities of finishing bath, then, the drive unit 38 receives an appropriate signal which, in turn, causes the kiss roll 20 to rotate at an increased rotational speed, thereby applying more finishing bath to the textile material. In this way there can be achieved a precisely controlled application of finishing bath in the required amount to the textile material. Also, as previously indicated heretofore the finishing agent is applied in such amount to the textile material or web 10 that after leaving the applicator roll 20 essentially no squeezable excess of finishing agent is present at such textile material.
  • a suitable heater unit 40 for the purpose of controlling the viscosity of the finishing bath 22 there may be advantageously provided a suitable heater unit 40. Also at the lower region of the applicator or kiss roll 20 and beneath the surface of the bath 22 there can be arranged a doctor blade 42 which counteracts the formation of air bubbles and the presence of undesirable particles such as fiber waste. This doctor blade 42 contacts the surface of the applicator roll 20.
  • a separate supply tank 44 for the bath which may be equipped with a suitable pump, and serves to intro Jerusalem, via the line or conduit 46, the bath from below the lower region of the vat 24 through the agency of one or more screened or hook-covered inlet openings, generally referenced at 48, these openings extending in spaced relation across the width of vat 24, in other words in the direction of the lognitudinal axis of rotation of the kiss or applicator roll 20.
  • foaming of the bath is suppressed, and there .is simultaneously achieved good mixing and agitation ofthe bath.
  • Proper mixing and agitation of the bath can be further enhanced if the bath 22 within the vat 24 is permitted to continuously overflow into the supply container 44 where it is then recirculated as described above back into the lower region of the vat 24, if desired following filtering of any foreign contaminents from the treatment bath.
  • the detector mechanism 34 located at the outfecd side ofthe vat 24 After the continuously moving textile material or web 10 has passed the detector mechanism 34 located at the outfecd side ofthe vat 24 it automatically arrives at the region of the schematically depicted dryer mechanism 50 which, as will be explained more fully hereinafter can constitute any of the conventionally used types of drying hardware found in the textile finishing art, such as tenter frames, jet dryers, loop dryers, infrared dryers, cylinder dryers and the like.
  • the dryer mechanism 50 is advantageously equippedwith a chain-type fabric take-up mechanism 52 which operates at a lower speed than the infeed mechanism 12 so as to relax the fabric.
  • the textile web 10 can pass into the dryer mechanism 50 after having been exposed to a certain dwell time which can be achieved, for instance, by passing the fabric or textile web 10 over a suitable number of non-illustrated deflecting rollers, or by temporarily winding-up the fabric or web.
  • the textile web 10, now imbued with the controlled quantity of applied finishing bath, is partially or completely dried, thereafter leaves this dryer and arrives at the operable zone of a further detector mechanism 54 measuring residual moisture content of the textile web. If this residual moisture content is found, for instance to be too low then the measuring head of detector unit 54 delivers a suitable signal via the control line 56 to the fabric infeed mechanism 12 so that the throughput speed of the textile material 10 through the system and through the dryer 50 is accordingly increased. Due to this increased throughput speed and the corresponding shorter exposure time of the imbued textile web to the action of the dryer 50 the residual moisture content will then be accordingly increased.
  • the detector unit 54 will then deliver an appropriate signal which 'would slow down the throughpassage of the textile material through the system thus increasing the residual moisture content. Any deviations in the throughput speed of the textile material, of course, will be sensed by the detector units 26, 34 so that, if necessary, an appropriate adjustment will be made of the peripheral speed of the applicator roll 20 via the control unit 30 and the drive unit 38 to thereby attain application of the desired controlled amount of finishing bath to the textile web or fabric 10.
  • a single kiss or applicator roll 20 in one bath vat The bath 22 may be assumed to contain the complete cross-linking agent, and if necessary, the catalysts and auxiliary finishing agents.
  • the bath 22 may be assumed to contain the complete cross-linking agent, and if necessary, the catalysts and auxiliary finishing agents.
  • a particular advantage of the apparatus construction of the invention discussed above resides in the possibility of infinitely controlling the relationship of the speed of movement of the textile goods 10 to the peripheral speed of the applicator or kiss roll or rolls 20 so that application of the bath 22 can be adjusted quite exactly and in reproduceable fashion to the desired value.
  • Monitoring of the applied quantity can be also undertaken discontinuously, for instance by weighing or titration.
  • continuously operating detector systems such as the detectors discussed above, operating for instance on the basis of radiation absorption.
  • the measurement signals can be advantageously directly employed for controlling the speed of rotation of applicator or kiss rolls for application of a desired reference quantity of bath. This control possibility is especially preferred.
  • application of the bath can be controlled as a function of bath consumption.
  • the quantity of bath to be used and previously precalculated is continuously dosed to the kiss roll and the rotational speed of such kiss roll is continuously varied via a level sensor or feeler control 33 arranged at the kiss roll vat 24, or possible at the communicating liquid container 44, connected via conductor 35 with the control unit 30, and operation occurring in such a manner that this liquid level remains constant and the application of the bath therefore automatically corresponds exactly to the infeed of bath. Any undesired deviations in the bath level cause the level sensor 33 to adjust the speed of rotation of the applicator or kiss roll via the control unit 30 and drive unit 38 until the bath level is again constant.
  • the bath applied-textile material is delivered, over a shorter or longer dwell path, directly to the drying unit.
  • a particularly advantageous feature of the described applicator device resides in the fact that in comparison to conventional immersion/impregnation techniques, here it is practically impossible for any exchange effect to occur between the bath supply and the textile material, thus considerably preventing a gradual change in the composition of the bath, for instance by reduction of the content of substantive. components. Furthermore, maintaining of the temperature of the bath constant is here considerably simpler than in systems using immersion paths.
  • the temperature of the bath normally is around room temperature. It may be necessary to work with cooled baths if such contain easily volatilized constituents. On the other hand, the composition of the bath may necessitate heating it up, as by the heater 40, in order to reach the favourable viscosity range of below 7 cp and to thus afford for the bath the required penetration capability.
  • the textile material containing the bath is then partially or completely dried following a shorter or longer dwell or residence time.
  • This dwell interval can amount to a few seconds or even fractions of a second.
  • special measures such as connectingin airor vapor-passages or temporarily winding-up the textile material.
  • the textile material then is dried,- the amount of residual moisture to be obtained depending upon the momentarily employed method technique: partial drying while observing a residual moisture content of 6-15 percent by weight for the so-called moist curing and more intensified drying for dry curing.
  • partial drying while observing a residual moisture content of 6-15 percent by weight for the so-called moist curing and more intensified drying for dry curing.
  • Suitable drying units are those known devices which work with convection-, condensation-, radiation-, or
  • a further advantage of the inventive method is present in the case of aqueous baths in terms of reduced shrinkage of the textile material by swelling, which under circumstances when working with fabrics enables carrying-out drying without special expander or stretching devices, for instance at cylinders instead of tenter frames.
  • the reaction of the finishing agent with the cellulose is carried-out in an additional heating step (condensation), in the event that such has not already occurred as in the case of moist curing during drying or in adwell period following drying.
  • Carrying out of the curing operation occurs in conventional equipment while using heat of convection, condensation, radiation or high frequency energy. However, it is also possible to work with high-energy radiation.
  • the cured textile material canthen be subjected to conventional wet treatment processes, such as afterwashing, top-finishing or dimensional stabilization.
  • Variant Example 1.2 (Inventive) The cross-linking bath contains 233 gms/liter of the same pre-condensate solution, yet it is applied while using an applicator device (kiss roll mechanism), with the ratio of the fabricto kiss or applicator roll-speed being controlled such that a takeup of bath of 30 percent of the weight of the dry fabric results. Both application techniques (Examples L] and 1.2 above) produce at the fabric a content of 3.5 percent by weight of I percentprecondensate.
  • the fabric is now dryed at the tenter frame. Thereafter there is applied to the fabric a catalyst bath containing 7.5 percent hydrochloric acid in'an applied quantity amounting to 7.0 percent based upon the weight of the dried fabric.
  • the acid-containing fabric is smoothly wound-up, and allowed to dwell for hours at room temperature. Thereafter. the fabric is washed-out, neutralized with ,an aqueous solution containing 2.5 gms/liter sodium carbonate. rinsed anddryed.
  • EXAMPLE 3 The cotton fabric used in Example 1 is provided with; an approximately 50 percent aqueous solution of dimethyloldihydroxyethylene urea, wherein in each instance two different concentrations are applied, namely conventionally (padding by dip-nip) and according to the present invention (kiss roll). Drying takes place at the tenter frameat 130C until reaching a residual moisture content of 3 4 percent, the curing taking'place at 150 C for Fudintites.
  • catalystthefe is employed magnesium chloride hexahydrate which is introduced into the finishing bath, and specifically 13.5 percent of the momentarily employed quantity of the commercially available cross-linking agent.
  • the fabric was dried so as to possess 6 8 percent residual moisture and thereafter was allowed to dwell at room temperature at a wind-up roll tightly sealed with a polyethylene fQiL'Theeafter, under cold conditions or temperature the acidic catalyst was removed by an alkali treatment and the fabric thoroughly washed. After three boiling washes the following values were ascertained:
  • Example 1 The cotton fabric used in Example 1 is finished so as not to need ironing, in accordance with the teachings of Swiss Pat. No. 466,206 while using a gaseous catalyst. Finishing bath for comparison (Embodiment 5.1) and lnventive method (Embodiment 5.2)
  • Example 5.1 the fabric is immersed in the finishing bath, squeezed at a two roller padding machine so as to have taken-up a quantity of bath amounting to 66 percent, based upon the weight of the dry goods, and then dried at a tenter frame at 130C to a residual moisture content of 5 percent and cooled at rollers to a temperature of 35C.
  • Example 5.2 of the invention the finishing bath is applied as in Example 1 while using a kiss or applicator roll, the ratio of the speed of move-' ment of the fabric to the kiss roll speed being adjusted such that there is obtained take-up of bath of 35 percent based upon the weight of the dry goods. Drying and subsequent cooling then occurs as in the manner of the comparison embodiment Example 5.1.
  • Both embodiment have the textile material thereof guided over the unit described in Swiss Pat. No. 466,206, which corresponds to US. Pat. No. 3,647,353, which contains boiling azeotropic hydrochloric acid, specifically at a speed of movement of the textile material of 60 meters/min.. there resulting via the 20 mm. wide vapor outlet-slot a contact time of approximately 0.02 seconds.
  • the fabrics of both embodiments thus take-up about 0.8 percent hydrochloric acid and 0.4 percent water based upon their dry weight.
  • the fabric gasified in this manner is then directly delivered to a full-width washing machine, neutrally washed and finally manufactured in the usual way.
  • PRIMENIT VS Trademark of Farbwerke Hoechst identifying a wash resistant, hydrophobic softening agent
  • the finishing bath for the embodiment Example 6.] (comparison example) is applied by immersion and squeezing at the padding machine with a squeezing effect of5l 53 percent based upon the weight ofthe dry goods.
  • the same finishing bath is applied by padding and in an amount of 28 to 30 percent.
  • Drying occurs in both embodiments in a six zonetenter frame at 110 to 120C to a residual moisture content of6 8 percent.
  • the speed amounted to 20'meters/min.
  • the embodiment Example 6.2 to 35 meters/min.
  • the thus finished fabric is finish worked into leisure pants which after pressing are baked in a furnace or oven at l50-l60C for 12 minutes.
  • Test pants produced according to the embodiment Examples 6.1 and 6.2 exhibit after washing and drying on a line equivalent permanent press properties, even though the inventive embodiment, in contrast to the comparison embodiment, contains only about 56 percent of the quantity offinishing agent.
  • EXAMPLE 7 A patterned, yarn colored sport shirt material consisting of 100 percent rayon staple with 235 gms/m after conventional pre-treatment, is finished in accordance with the invention while using two partial baths so as to be easy to care.
  • aqueous bath is applied to the front side or face of the fabric.
  • This bath contains 400 gms/liter ofa dimethylol urea solution, 50 percent solution, and 30 gms/liter PRlMENlT" VS (cf. Example 6), and 0.5 gms/liter RAPlDNETZER” ,RBD (Trademark of Badische Anilin & Sodafabrik AG (BASF), identifying a wetting agent formed on the basis of sulphonamide).
  • BASF Badische Anilin & Sodafabrik AG
  • fac q the fab are coated witlTan aqueous solution of 60 gms./liter KNITTEX cayalyst F 53 (Trademark product of Fabrik Pfersee) in such a manner that the total mount of applied bath, based upon the weight of the dry fabric, now amounted to 45 percent. Thereafter, the fabric passes in succession through a rapid steamer and a ten- 55 mi frame. In the same pass the fabric is dried and condensed at a six zone-tenter frame at C during 40 seconds.
  • EXAMPLE 8 A fabric pre-treated and dyed in conventional manner and intended for rainwear, an imitation poplin, consisting of 100 percent cotton with gms/m, is
  • the rain test (Bundesmann) in both embodiments, after minutes rain duration, resulated in a water take-up of 10 percent.
  • tile material after drying thereof in order to accelerate, the reaction between the finishing agent and cellulose.
  • the method as defined in claim 13 including continuously monitoring the amount of treatment bath applied, and controlling the relative velocity of the kiss roll and the textile material in response to the monitoring to maintain the application of treatment bath at a constant amount.
US00126723A 1970-03-26 1971-03-22 Method and apparatus for finishing cellulose-containing textile materials and textile materials thus produced Expired - Lifetime US3811834A (en)

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NL7103861A (ja) 1971-09-28
CH530233A (de) 1972-04-14
IL36459A (en) 1975-06-25
DE2114517A1 (de) 1972-02-24
DE2114517B2 (de) 1977-10-13
FR2083608A1 (en) 1971-12-17
JPS5740266B2 (ja) 1982-08-26
DE2114517C3 (de) 1983-02-10
AT335966B (de) 1977-04-12
ZA711932B (en) 1972-01-26
FI56408B (fi) 1979-09-28
CH465970A4 (ja) 1972-04-14
US3862553A (en) 1975-01-28
SE396625B (sv) 1977-09-26
ATA253171A (de) 1976-08-15
JPS53111198A (en) 1978-09-28
HU166513B (ja) 1975-03-28
JPS5938351B1 (ja) 1984-09-17
GB1346481A (en) 1974-02-13
FR2083608B1 (ja) 1974-01-11
CA959609A (en) 1974-12-24
IL36459A0 (en) 1971-05-26
ES389935A1 (es) 1973-06-16
PL90335B1 (ja) 1977-01-31
FI56408C (fi) 1980-01-10

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