EP0735175B1 - Verfahren zur Herstellung einer Baumwoll-Warenbahn und Baumwollstücke, die durch Schneiden dieser Warenbahn hergestellt wurden - Google Patents
Verfahren zur Herstellung einer Baumwoll-Warenbahn und Baumwollstücke, die durch Schneiden dieser Warenbahn hergestellt wurden Download PDFInfo
- Publication number
- EP0735175B1 EP0735175B1 EP95400676A EP95400676A EP0735175B1 EP 0735175 B1 EP0735175 B1 EP 0735175B1 EP 95400676 A EP95400676 A EP 95400676A EP 95400676 A EP95400676 A EP 95400676A EP 0735175 B1 EP0735175 B1 EP 0735175B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet
- cotton
- manner
- autoclave
- scalding
- 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 - Lifetime
Links
- 229920000742 Cotton Polymers 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000005520 cutting process Methods 0.000 title claims description 6
- 238000004061 bleaching Methods 0.000 claims abstract description 21
- 239000012530 fluid Substances 0.000 claims abstract description 20
- 238000009736 wetting Methods 0.000 claims abstract description 9
- 244000144992 flock Species 0.000 claims abstract description 8
- 238000010009 beating Methods 0.000 claims abstract description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 14
- 238000005507 spraying Methods 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 11
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 9
- 239000000194 fatty acid Substances 0.000 claims description 9
- 229930195729 fatty acid Natural products 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 7
- -1 fatty acid esters Chemical class 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 239000003352 sequestering agent Substances 0.000 claims description 4
- 239000000080 wetting agent Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000000839 emulsion Substances 0.000 claims description 3
- 150000004665 fatty acids Chemical class 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 239000011572 manganese Substances 0.000 claims description 3
- 150000001455 metallic ions Chemical class 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 239000011575 calcium Substances 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims description 2
- 230000007935 neutral effect Effects 0.000 claims description 2
- 230000009919 sequestration Effects 0.000 claims description 2
- 210000001520 comb Anatomy 0.000 claims 1
- 239000000047 product Substances 0.000 description 7
- 230000008901 benefit Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 239000006227 byproduct Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 235000013311 vegetables Nutrition 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000008234 soft water Substances 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 239000004902 Softening Agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000005115 demineralization Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000001814 pectin Substances 0.000 description 1
- 229920001277 pectin Polymers 0.000 description 1
- 235000010987 pectin Nutrition 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000012178 vegetable wax Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Images
Classifications
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01B—MECHANICAL TREATMENT OF NATURAL FIBROUS OR FILAMENTARY MATERIAL TO OBTAIN FIBRES OF FILAMENTS, e.g. FOR SPINNING
- D01B9/00—Other mechanical treatment of natural fibrous or filamentary material to obtain fibres or filaments
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/02—Cotton wool; Wadding
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/492—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
-
- 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
- D06B1/02—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by spraying or projecting
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L1/00—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods
- D06L1/12—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods using aqueous solvents
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
Definitions
- the present invention relates to a process of producing a sheet of cotton wool from raw cotton fibres, in particular from combing noil, which is obtained as a by-product in the process of manufacturing cotton fibres with the intention of spinning and weaving the combed products.
- the longest fibres are sorted to be used for spinning and weaving high quality products.
- the wastes from this first sorting or combing operation which are generally known as combing noil, and which are considered, in cotton technology, as high-quality by-products, act as starting material for processes of manufacturing cotton wool, make-up removing products, pharmaceutical or surgical pads, etc.
- These by-products consist of good fibres which are well untangled and very clean, containing only a small amount of vegetable waste or other polluting agents.
- the conventional method of using combing noil of this type consists in subjecting the raw (i.e. crude) cotton fibres to, successively, preliminary beating and opening-up operations in such a manner as to obtain cotton flock which is opened up and physically cleaned and then subjecting this cotton flock to a scalding treatment which consists in removing the greases (pectins, vegetable waxes, etc) which are found around the fibres, and in fluffing out these fibres, while separating out the vegetable wastes, to prepare them for subsequent treatment operations.
- This scalding is most frequently performed in an autoclave using a soda solution.
- a bleaching operation in particular using hydrogen peroxide, likewise performed in an autoclave, and intended to confer on the cotton fibres the whiteness which is necessary for the presentation thereof in the commercial environment.
- the cotton having been subjected to this scalding and bleaching operation, is, subsequently, brought into a card room where it is processed on cards which comb the cotton fibres very finely, align them in a parallel manner, separate them from one another and make them into a nap which is subsequently processed.
- the crude cotton fibres are conducted to perforated cylinders or belts, on which they are deposited in an approximately uniform manner to form a fluffy sheet having almost no cohesion; this sheet is brought to a wetting liquor containing hot water (50 to 70°C) and a wetting agent, in such a manner as to obtain a more compact sheet having a certain strength owing to physical cohesion, and to render this hydrophillic, and then, when this sheet is removed from the wetting liquor, it is dried between calender rollers, and wound on a cylinder which is subsequently introduced into an autoclave, in order to subject it to scalding and bleaching operations in a basic medium and at a temperature of the order of 130°C.
- the sheet when it is ready to be subjected to scalding and bleaching operations in the autoclave, be wound around a hollow cylinder having perforations which are spaced uniformly on the surface thereof, that the spool which has thus been obtained be enclosed in a cylindrical sleeve, comprising, on the periphery thereof, perforations similar to those provided on the cylinder, and that there be associated, with the autoclave, a closed circuit for circulation of treatment fluids, the circuit comprising an inlet duct connected to the end of the perforated cylinder, an outlet duct connected to an aperture provided for this purpose in the autoclave, and a circulation pump.
- the above-mentioned method has the disadvantage of being relatively slow, taking into account the time which is required to perform the operations of scalding and bleaching the spools in the autoclave, which is of the order of 5 hours. It would, furthermore, be desirable to be able to reduce the duration of this treatment, especially since this is the only stage of the manufacturing process that is discontinuous.
- a further disadvantage of the above-mentioned method of manufacturing cotton sheets relates to the fact that it involves the discharge of very polluting residual waters, which, depending on the nature of the chemical products being used, have, in particular, very high values of the biological oxygen demand (BOD) and the chemical oxygen demand (COD) and very high contents of material in suspension (MIS).
- BOD biological oxygen demand
- COD chemical oxygen demand
- MIS material in suspension
- a further disadvantage of the above-mentioned method relates to the fact that during the scalding and bleaching operations, it is necessary to control the variations of the pressure differential which are established between the liquid entering the spool and the liquid leaving it, in such a manner as to avoid the coils on a part of the spool being torn.
- the object of the present invention is to overcome these disadvantages by proposing a method of manufacturing a cotton wool sheet of the above-mentioned type, which method is substantially less polluting and in which the treatment time in the autoclave may be substantially reduced whilst avoiding any risk of the coils being torn.
- This method is characterised in that there is performed, in the impregnating bath, a sequestration of the catalytes of the cotton in the acid or neutral phase: agents for hardening the water and the cotton (calcium, magnesium) and metallic ions (iron, copper, manganese) in such a manner as to obtain a preliminary attack of the cotton fibres of such a type as to facilitate the subsequent operations of scalding and bleaching, and in that, before the sheet is wound onto a perforated hollow cylinder, it is subjected to a fluid pretreatment in that the entire width thereof is passed at right angles to banks of spraying devices comprising a series of nozzles which very close to one another and associated with a vacuum source and able to send a series of jets of a rinsing liquid through the sheet in such a manner as to obtain a preliminary connection thereof by the preliminary action of the fluid.
- the preliminary attack of the cotton fibres by acidification to a pH of the order of 3 to 5 may, advantageously, be performed by adding to the impregnating bath, a suitable, weakly acid concentration, together with a sequestering agent; this allows the time necessary for the treatment in the autoclave to be reduced by approximately 45 minutes.
- a suitable, weakly acid concentration together with a sequestering agent
- the rate of removal of the sheet is between 120 and 140%; taking into account the characteristics of this fluid, it is necessary to provide a suitable rinsing with soft water upstream of the scalding operation in order not to disturb the action of the soda which is used; this renewal of the liquid which impregnates the sheet leaving the wetting liquor, permits, at the same time, a demineralisation thereof to be performed by removing the salts which form as a consequence of the action of the acid.
- the fluid pretreatment permits an appreciable increase in the cohesion to be obtained during the scalding and bleaching treatment thereof; this results in a reduction of the risks of tearing following an insufficient control of the pressure differences which may prevail at the interior of the autoclave.
- the rate of removal corresponds to the quantity of water discharged by the sheet; the total weight thereof is thus 275 g + 130 % of 275 g, ie. 632.5 g.
- the scalding and bleaching operations are formed in a single stage by circulating a mixture of soda and hydrogen peroxide in the autoclave.
- This combined pretreatment permits the total time of the treatment in the autoclave to be reduced to a duration of 3 hours in place of 5 hours, whilst a sheet of at least equivalent quality is obtained.
- the sheet, having been subjected to the hydraulic pretreatment stage does not only have an increased cohesion upstream of the autoclave, as may have been expected, but also at the end of the treatment.
- This improvement of the cohesion of the finished product is proved by the example which forms the object of Table 2, in which the strengths, at the end of treatment, of a sheet having been manufactured according to the conventional process in accordance with the above-mentioned document FR-2 552 120 on the one hand, and a sheet having been produced by the method according to the invention, on the other hand, are compared.
- the hydraulic pretreatment stage according to the invention has the drawback of reducing the softness of the sheet to the touch, and of rendering it too rough to satisfy customers' expectations fully.
- a first phase of this treatment is performed in the autoclave and consists in circulating, when the scalding and bleaching operations have been completed, a rinsing fluid, and then a softening solution which is known per se, and contains, in particular, fatty acid esters, in order to increase the softness and the suppleness of the sheet obtained after unwinding.
- This first phase is broadly comparable to the action of softening agents which housewives have used on their linen for some years.
- a supplementary surface softening treatment phase be associated with the above-mentioned first phase.
- the wrung-out sheet which has previously been treated in the autoclave is, prior to drying, subjected, to this end, to a supplementary treatment consisting of spraying, in fine droplets, a supplementary softening solution onto each of its surfaces.
- the supplementary softening solution consists of an aqueous emulsion of fatty acid amides and cationic fatty acid ester derivatives.
- the sheet is directed substantially vertically by means of the guide rollers and allowed to pass, at right angles, two essentially horizontal banks of spraying devices which are located, respectively, opposite one of its faces and each of which extends over the whole of its width.
- Each of the banks of spraying devices may, according to the invention, advantageously consist of a series of cupels with a substantially vertical axis, mounted side-by-side, turning very rapidly about themselves about this axis and supplied with a supplementary softening solution at their lower end which is opposite the sheet.
- a spraying device of this type has the advantage of not being at risk of blocking.
- the invention likewise relates to pieces of any shape and, in particular, to round pads of cotton produced by cutting a sheet which is obtained using the above-mentioned method.
- Pieces of this type can be distinguished in particular by the softness and velvetiness thereof, and by the strength thereof in both the longitudinal and the transverse directions.
- the raw cotton used in this method is conducted in the direction of the arrow I to a first station A in which it is subjected to conventional preliminary beating and opening-up operations.
- cotton flock which is opened up and physically clean, is obtained, which flock is conducted in the direction of the arrow II to a second station B for forming the sheet, consisting of perforated cylinders at the interior of which a certain sub-pressure prevails.
- These cylinders which are not shown in detail in the Figures, attract the fibres under the effect of their empty interior.
- This sheet which has a thickness of the order of 8 cm, is subsequently brought to a wetting station C consisting of an impregnating and pretreatment bath containing, for example, a solution composed of weak acid and sequestering and wetting agents.
- the sheet III On leaving the impregnating bath, the sheet III is transformed into a sheet IV, the thickness of which is not more than approximately 1.5 mm and which is thus greatly compressed.
- This sheet which has a certain strength as a consequence of the presence of connections between the fibres acquired under the effect of contact with the treatment liquid of the station C, is subsequently dried between the calender rollers D. On leaving these rollers, there is obtained a sheet V which is still very damp in view of the fact that it has a rate of removal of approximately 130%.
- the sheet V is subsequently transferred to a hydraulic pretreatment station E where the entire width thereof is passed at right angles to banks of spraying devices, which are not shown in detail in the Figure, in such a manner as to permit the heavily mineralised treatment liquid from the impregnating bath C which impregnates the sheet, to be replaced by suitable soft water.
- the banks of spraying devices equipping the station E comprise, in series, nozzles which are provided with apertures which are very fine and very close; each bank consequently sending, through the sheet, a series of pressurised jets which permit, in addition to the above-mentioned rinsing, a preadhesion of the sheet to be obtained by the effect of the fluid.
- the sheet VI which has been rinsed and preadhered in this manner leaves the hydraulic pretreatment station E and is subsequently wound in a spool F on a perforated hollow cylinder 1.
- Each spool F which comprises a length of the cotton sheet VI which may be in excess of 1 km, is subsequently transferred into an autoclave associated with a closed circuit for the circulation of processing fluid, as described and shown in the document FR-2 552 120.
- the spool F is subjected, in a first step, to a scalding and bleaching treatment in a single stage by means of a mixture of soda and hydrogen peroxide; it is subsequently rinsed before being treated using a softening solution containing fatty acid esters.
- the acid nature of the treatment bath C and the use of the hydraulic pretreatment phase E permit the total treatment time in the autoclave, which was initially of the order of 5 hours, to be reduced to a duration of from 3 hours to 3 hours 30.
- the sheet VII leaving the autoclave is subsequently unwound and transferred to a station at which it is wrung out by suction.
- the sheet VII which has been wrung out in this manner is subsequently transferred to a supplementary softening treating station H which will be described in more detail hereinbelow, and then to a drying station I and, finally, to a cutting station J where it is cut into round pads with a diameter of the order of 6 cm.
- the supplementary softening treating station is provided with two guide rollers 2, 2' which are capable of deflecting the cotton sheet VIII which is displaced substantially horizontally through this station, in such a manner that it passes over a section K in which it is directed substantially vertically.
- the station H is likewise provided with two substantially vertical banks of spraying devices 3, 3' which are located, respectively, either side of the guide rollers 2 and 2' and which the cotton sheet passes at right angles during the displacement thereof over the vertical section K.
- Each of the vertical banks of spraying devices 3, 3' is intended to treat one of the surfaces of the sheet.
- the vertical banks of spraying devices 3, 3' each extend over the entire width e of the sheet VIII and are each comprised of a series of cupels 4 have an axis X-X' which is substantially vertical and are mounted side-by-side in the immediate vicinity of one another and rotating very rapidly about themselves in the direction of the arrows c about their axis X-X'. It is understood that the number of three cuples which is shown in Figure 3 has only been selected with the object of clarity, and the number of cupels of each bank is, in fact, clearly greater.
- Each of the cupels 4 is supplied in the direction of the arrows b with a softening liquid containing an aqueous emulsion of fatty acid amides and derivatives of cationic fatty acid esters, at the end thereof which is remote from the sheet.
- a softening liquid containing an aqueous emulsion of fatty acid amides and derivatives of cationic fatty acid esters, at the end thereof which is remote from the sheet.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
- Woven Fabrics (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Claims (9)
- Verfahren zur Herstellung eines Blattes aus Baumwolle ausgehend von rohen Baumwollfasern, bei welchem die rohe Baumwolle hintereinander konventionellen vorbereitenden Mahl- und Aufschlußarbeitsgängen, insbesondere auf Kämmen, in einer solchen Weise unterworfen wird, daß ein Faserbüschel erhalten wird, das aufgeschlossen und physikalisch gereinigt ist, diese Fasern zu perforierten Zylindern oder Gurten geführt werden, auf welchen sie in etwa gleichmäßiger Weise abgelegt werden, um ein lockeres Blatt mit fast keiner Kohäsion zu ergeben, jedes Blatt in einer solchen Weise zu einer Benetzungsflüssigkeit, die heißes Wasser und ein Netzmittel enthält, gebracht wird, daß ein Blatt erhalten wird, welches kompakter ist und aufgrund physikalischer Kohäsion eine bestimmte Festigkeit aufweist und dann aus der Benetzungsflüssigkeit entnommen wird, dieses Blatt zwischen zwei Kalandrierwalzen getrocknet und so auf einen perforierten Hohlzylinder gewickelt wird, daß eine Spule erhalten wird, diese Spule in einen Autoklaven eingesetzt wird, wo sie Brüh- und Bleicharbeitsgängen unterworfen wird, indem die Behandlungsfluide radial durch die Wicklungen der Spule so zirkulieren gelassen werden, daß die Kohäsion des Blattes, welche nach dem Abwickeln erhalten wird, durch die Wirkung des Fluids erhöht wird, worauf die Spule aus dem Autoklaven entnommen und ausgewunden und in einer an sich bekannten Weise getrocknet wird, welches Verfahren dadurch gekennzeichnet ist, daß in dem Imprägnierbad eine Sequestrierung der Katalyte der Baumwolle in der sauren oder neutralen Phase vorgenommen wird: Mittel zur Härtung des Wassers und der Baumwolle (Calcium, Magnesium) und Metallionen (Eisen, Kupfer, Mangan) in einer solchen Weise, daß ein vorbereitender Angriff der Baumwollfasern erreicht wird, um die anschließenden Brüh- und Bleicharbeitsgänge zu erleichtern, und daß das Blatt, bevor es auf einen perforierten Hohlzylinder gewickelt wird, einer Fluid-Vorbehandlung derart unterworfen wird, daß seine gesamte Breite in rechten Winkeln an Anordnungen von Sprühvorrichtungen vorbeigeführt wird, welche Anordnungen eine Reihe von Düsen oder Perforationen umfassen, die sehr nahe beieinander angeordnet und mit einer Vakuumquelle verbunden und imstande sind, eine Reihe von Strahlen einer Spülflüssigkeit durch das Blatt zu schicken, um eine vorbereitende Bindung desselben durch die vorbereitende Wirkung des Fluids zu erreichen.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Benetzungsflüssigkeit durch die Zugabe von schwacher Säure in Kombination mit einem Sequestriermittel angesäuert wird, um ein Imprägnierungsbad zu ergeben.
- Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Brüh- und Bleicharbeitsgänge in einer einzigen Stufe vorgenommen werden, indem eine Mischung von Soda und Wasserstoffperoxid in dem Autoklaven zirkulieren gelassen wird.
- Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß nach Abschluß der Brüh- und Bleicharbeitsgänge in dem Autoklav eine Spülflüssigkeit und dann eine an sich bekannte Weichmacherlösung, die insbesondere Fettsäureester enthält, zirkulieren gelassen wird, um die Weichheit und Geschmeidigkeit des Blattes, welches nach dem Abwickeln erhalten wird, zu steigern.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das ausgewundene Blatt, das zuerst in dem Autoklav behandelt worden war, vor dem Trocknen einer zusätzlichen Oberflächen-Weichmacherbehandlung durch Aufsprühen einer zusätzlichen Weichmacherlösung in feinen Tröpfchen auf jede seiner Oberflächen unterworfen wird.
- Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß die zusätzliche Weichmacherlösung aus einer wässerigen Emulsion von Fettsäureamiden und den Derivaten eines kationischen Fettsäureesters besteht.
- Verfahren nach den Ansprüchen 5 oder 6, dadurch gekennzeichnet, daß während der vorbereitenden zusätzlichen Weichmacherbehandlung das Blatt mit Hilfe von Führungsrollen im wesentlichen vertikal gelenkt und in rechten Winklen an zwei Anordnungen von Sprühvorrichtungen vorbeigeführt wird, wobei diese im wesentlichen horizontal und jeweils gegenüber einer der Oberflächen des Blattes angeordnet sind und sich jede von ihnen über die gesamte Breite des Blattes erstreckt.
- Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß jede der Anordnungen der Sprühvorrichtungen aus einer Reihe von Kupellen mit einer im wesentlichen vertikalen Achse besteht, die Seite an Seite montiert sind, sich sehr rasch um sich selbst um diese Achse drehen und mit einer zusätzlichen Weichmacherlösung an jenem Ende derselben versorgt werden, das dem Blatt gegenüberliegt.
- Stück aus Baumwolle mit beliebiger Gestalt, und insbesondere runde Kissen, dadurch gekennzeichnet, daß es durch Schneiden eines Blattes, welches nach dem Verfahren nach einem der Ansprüche 1 bis 8 erhalten wurde, gebildet ist.
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT95400676T ATE177484T1 (de) | 1995-03-27 | 1995-03-27 | Verfahren zur herstellung einer baumwoll- warenbahn und baumwollstücke, die durch schneiden dieser warenbahn hergestellt wurden |
DK95400676T DK0735175T3 (da) | 1995-03-27 | 1995-03-27 | Fremgangsmåde til fremstilling af et vatark og bomuldsstykker fremstillet ved udskæring af et ark frembragt ved anvendelse |
ES95400676T ES2128674T3 (es) | 1995-03-27 | 1995-03-27 | Metodo para producir una lamina de guata, y piezas de algodon producidas al cortar una lamina obtenida al utilizar este metodo. |
DE69508226T DE69508226T2 (de) | 1995-03-27 | 1995-03-27 | Verfahren zur Herstellung einer Baumwoll-Warenbahn und Baumwollstücke, die durch Schneiden dieser Warenbahn hergestellt wurden |
EP95400676A EP0735175B1 (de) | 1995-03-27 | 1995-03-27 | Verfahren zur Herstellung einer Baumwoll-Warenbahn und Baumwollstücke, die durch Schneiden dieser Warenbahn hergestellt wurden |
CA002214992A CA2214992A1 (en) | 1995-03-27 | 1996-03-01 | Method of producing a sheet of cotton |
PCT/US1996/002771 WO1996030565A1 (en) | 1995-03-27 | 1996-03-01 | Method of producing a sheet of cotton |
KR1019970706766A KR100263355B1 (ko) | 1995-03-27 | 1996-03-01 | 면시이트의제조방법 |
AU53567/96A AU5356796A (en) | 1995-03-27 | 1996-03-01 | Method of producing a sheet of cotton |
MXPA/A/1997/007323A MXPA97007323A (en) | 1995-03-27 | 1997-09-25 | Method of production of a sheet of something |
GR990401257T GR3030174T3 (en) | 1995-03-27 | 1999-05-10 | Method of producing a sheet of cotton wool and pieces of cotton produced by cutting a sheet obtained using this method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95400676A EP0735175B1 (de) | 1995-03-27 | 1995-03-27 | Verfahren zur Herstellung einer Baumwoll-Warenbahn und Baumwollstücke, die durch Schneiden dieser Warenbahn hergestellt wurden |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0735175A1 EP0735175A1 (de) | 1996-10-02 |
EP0735175B1 true EP0735175B1 (de) | 1999-03-10 |
Family
ID=8221472
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95400676A Expired - Lifetime EP0735175B1 (de) | 1995-03-27 | 1995-03-27 | Verfahren zur Herstellung einer Baumwoll-Warenbahn und Baumwollstücke, die durch Schneiden dieser Warenbahn hergestellt wurden |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0735175B1 (de) |
KR (1) | KR100263355B1 (de) |
AT (1) | ATE177484T1 (de) |
AU (1) | AU5356796A (de) |
CA (1) | CA2214992A1 (de) |
DE (1) | DE69508226T2 (de) |
DK (1) | DK0735175T3 (de) |
ES (1) | ES2128674T3 (de) |
GR (1) | GR3030174T3 (de) |
WO (1) | WO1996030565A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100804273B1 (ko) | 2007-01-05 | 2008-02-18 | (주)태봉 | 육묘 매트와 이의 제조 방법 및 이 육묘 매트를 이용한육묘장치 |
FR2978460B1 (fr) * | 2011-07-28 | 2014-07-11 | Georgia Pacific France | Produit fibreux absorbant contenant au moins 50% de fibres cellulosiques hydrophiles et comprenant au moins deux couches dont l'une est hydroliee |
ES2728126T3 (es) | 2015-05-22 | 2019-10-22 | Essity Operations France | Almohadilla de algodón, procedimiento y dispositivo para su fabricación |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE638882A (de) * | 1962-10-18 | 1900-01-01 | ||
FR1478515A (fr) * | 1966-03-10 | 1967-04-28 | Saint Denis Ets | Nouveau feutre de coton |
FR1533218A (fr) * | 1966-12-15 | 1968-07-19 | Thibeau & Cie A | Procédé de traitement de matières textiles fibreuses dans un fluide et dispositifs pour la mise en oeuvre de ce procédé |
FR2081133B1 (de) * | 1970-03-09 | 1974-07-12 | Serviere Hubert De | |
CH549415A (de) * | 1971-09-07 | 1974-05-31 | Kleinewefers Ind Co Gmbh | Einrichtung zum nassbehandeln von textilen gewebebahnen. |
FR2265891A1 (en) * | 1974-03-26 | 1975-10-24 | Bertin & Cie | Non-woven fabric prodn. - from fibre lap of which the fibres are entangled by fluid jets directed onto lap |
FR2552120B1 (fr) * | 1983-09-21 | 1985-12-20 | Tempo Sanys | Procede de fabrication d'une nappe de coton hydrophile ainsi que nappe obtenue conformement a la mise en oeuvre de ce procede et pieces de coton de formes quelconques obtenues par decoupage d'une telle nappe |
-
1995
- 1995-03-27 ES ES95400676T patent/ES2128674T3/es not_active Expired - Lifetime
- 1995-03-27 AT AT95400676T patent/ATE177484T1/de not_active IP Right Cessation
- 1995-03-27 DE DE69508226T patent/DE69508226T2/de not_active Expired - Lifetime
- 1995-03-27 EP EP95400676A patent/EP0735175B1/de not_active Expired - Lifetime
- 1995-03-27 DK DK95400676T patent/DK0735175T3/da active
-
1996
- 1996-03-01 CA CA002214992A patent/CA2214992A1/en not_active Abandoned
- 1996-03-01 KR KR1019970706766A patent/KR100263355B1/ko not_active IP Right Cessation
- 1996-03-01 WO PCT/US1996/002771 patent/WO1996030565A1/en active IP Right Grant
- 1996-03-01 AU AU53567/96A patent/AU5356796A/en not_active Abandoned
-
1999
- 1999-05-10 GR GR990401257T patent/GR3030174T3/el unknown
Also Published As
Publication number | Publication date |
---|---|
KR19980703361A (ko) | 1998-10-15 |
GR3030174T3 (en) | 1999-08-31 |
AU5356796A (en) | 1996-10-16 |
ES2128674T3 (es) | 1999-05-16 |
DE69508226D1 (de) | 1999-04-15 |
KR100263355B1 (ko) | 2000-12-01 |
CA2214992A1 (en) | 1996-10-03 |
DK0735175T3 (da) | 1999-09-27 |
WO1996030565A1 (en) | 1996-10-03 |
ATE177484T1 (de) | 1999-03-15 |
MX9707323A (es) | 1997-11-29 |
DE69508226T2 (de) | 1999-07-29 |
EP0735175A1 (de) | 1996-10-02 |
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