EP0372038A1 - Procede de traitement des poils d'animaux - Google Patents

Procede de traitement des poils d'animaux

Info

Publication number
EP0372038A1
EP0372038A1 EP19890905598 EP89905598A EP0372038A1 EP 0372038 A1 EP0372038 A1 EP 0372038A1 EP 19890905598 EP19890905598 EP 19890905598 EP 89905598 A EP89905598 A EP 89905598A EP 0372038 A1 EP0372038 A1 EP 0372038A1
Authority
EP
European Patent Office
Prior art keywords
scouring
masses
animal hair
fibres
wool
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.)
Withdrawn
Application number
EP19890905598
Other languages
German (de)
English (en)
Inventor
Peter Stewart Hopkins
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WOOLTECH Ltd
Original Assignee
WOOLTECH Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by WOOLTECH Ltd filed Critical WOOLTECH Ltd
Publication of EP0372038A1 publication Critical patent/EP0372038A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • D01B3/00—Mechanical removal of impurities from animal fibres

Definitions

  • This invention relates to a process for treatment of animal hair fibres and in particular wool by minimising fibre entanglement.
  • the most common methods of removing dirt, suint and grease from raw wool have involved the use of scouring systems which feed the contents of wool bales into aqueous scour vats.
  • (ii) the wool opening process which feeds wool into the delivery hopper, and (iii) the ensuing "slumping" of the wool as well as the movement and agitation of wool as it moves through the scouring vats all lead to a high level of fibre entanglement.
  • This is a legacy of on- farm packing and handling and/or processing in aqueous media at the scour factory.
  • This entanglement must subsequently be removed so the wool can be converted to yarn.
  • the removal of entanglement occurs mainly during the carding process where dry scoured wool is fed into a machine (or card) which aligns the fibres in parallel. This process causes substantial breakage of the fibres and there is a concomitant penalty inherent in removing the tangle.
  • the breakage means that there is a low top: oil ratio of wool coming from the card and a simultaneous low average fibre length (approximately 30% reduction) for the aligned (parallel) fibres coming from the card when compared to the fibres fed into the card.
  • These aligned and untangled fibres coming off the card constitute carded slivers which are then further processed to make a top.
  • the low top:noil ratio and low average fibre length in the top reduce the value of the product of topmaking.
  • the process of the invention may include the following steps:
  • the process of the invention is applicable to any appropriate animal having hair fibres that may be scoured.
  • the animal hair fibres may be selected from wool fibres, cashmere and other goat hair fibres , alpaca hair fibres, camel hair fibres, sable hair fibres, chinchilla hair fibres, fox hair fibres, astrakhan hair fibres, weasel hair fibres, racoon hair fibres, civet hair fibres and lamb hair fibres.
  • animal hair fibre masses may also be in the form of a mass of loose hairs, web, sliver or top.
  • the masses of hair fibres are constituted by fleeces of hair fibre which, when removed from the animal may be in the form of a coherent or cohesive mass.
  • the mass of hair fibres may be attached to a skin support but this is not essential.
  • the . animal hair fibres are removed from the animal by clipping or shearing they form coherent masses or fleeces which may be subsequently packed for transport in any appropriate fashion so long as the masses are separated from each other by appropriate means.
  • the masses may be formed into layers or mats which are separated by layers of plastics sheet or the like.
  • Any pattern of packing on a container may be adopted.
  • each mat of fibres may be arranged in stacked relationship or alternatively they may be coiled about each other in spiral or concentric fashion.
  • a press may be used to press the separate mats of fibre into a * * container or box. However, the press may be used in such a manner to avoid fibre entanglement.
  • vacuum packing may be adopted if required.
  • the animal hair fibres may be subjected to preliminary evaluation as is known in the art to assess strength of fibre, diameter, preliminary scour test evaluation and wool top evaluation.
  • preliminary evaluation as is known in the art to assess strength of fibre, diameter, preliminary scour test evaluation and wool top evaluation.
  • the discrete masses of hair fibres may be taken straight to the scouring apparatus after being removed from the animal.
  • separated masses of hair fibre suitably in the form of entire skirted fleeces may be taken to the scouring location by conveyor from the shearing shed or other site where the animal hair is removed from the animal. Any suitable scouring process may take place as is known in the art and this includes aqueous scouring and/or scouring using organic solvents.
  • the scouring processes utilized may be gentle in nature so as to inhibit fibre entanglement and/or breakage.
  • the separate masses of animal hair or fleeces may be scoured at room temperature and an aqueous scour medium may contain a surface active or other emulsifying agent for the removal of wool grease together with dirt release agents such as alkali metal silicates.
  • Ammoniated detergents also may be utilized.
  • an aqueous scouring step is utilized followed by an organic solvent scouring step although either form of scouring step may be utilized in the process of the invention. If desired an organic solvent washing or cleaning step may be utilized prior to aqueous scouring.
  • the preferred solvent is 1,1,1 trichloroethane for its relative cost and ease of recovery, although any other organic solvent may be utilized if required.
  • TCE trichloroethane
  • the treatment with the solvent may be undertaken in either a batch or continuous process depending on the scale of operations. It is contemplated that, for on-station processing, batch processing may be more appropriate in terms of the capital cost of plant. For industrial scale applications, it is regarded that a continuous process would be chosen.
  • the wool is advantageously contained in . dip baskets that are dipped and agitated in a bath containing the solvent.
  • the wool is sequentially immersed in more than one bath to effect a thorough scour.
  • the wool is then slowly immersed in the solvent batch until submerged, and agitated to effect loosening of retained dirt and to ensure optimised dissolution of any residual wool grease.
  • the basket is preferably rapidly removed from the solvent bath, the passage of solvent down through the fleece effective removal of dirt, grease and suint from the wool.
  • the "tip down" configuration fo the wool reduces the number of solvent passes required.
  • the fleece is preferably loaded onto a conveyor belt such as a perforated or metal mesh travelling belt which travels through one or more solvent baths. Again, it is particularly preferred to orient the fleece with the outer surface downwards.
  • the solvent is then preferably slowly pumped into the bath until the fleece within the bath is immersed.
  • the belt and fleece may be agitated from above or below to effect loosening of the fibres and the release of any residual dirt, grease and suint, after which the solvent is preferably rapidly released to effect the flushing effect of the solvent under gravity as described above.
  • agitation may be provided by mechanical or other means. It is particularly preferred to use ultrasonic vibration of the solvent medium to effect the agitation since an appropriate choice of frequency and energy input causes localized cavitation and vapour production within the medium. The bubbles of vapour then permeate the wool causing dislodgement of dirt and grease, and enhancing fibre separation without damage.
  • ultrasonic energy is appropriately supplied to the solvent baths by attaching transducers thereto which are capable of delivering ultrasonic energy at a frequency of 25KHz and at a power density of 40 watts per litre of solvent/wool medium. It is noted that this frequency of operation creates the optimum bubble formation in the present solvents.
  • agitation may be effected by entraining gas or vapour bubbles in the solvent by external means.
  • gas jets may be employed to inject air, nitrogen or any other preferably inert gas into the solvent to effect agitation.
  • the organic solvent scouring step suitably uses chlorinated hydrocarbons such as trichloroethane, methylene chloride, or mixtures thereof and two phase solvent systems thereof. This results in superior drying performance of the wool. This overcomes problems of post processing of wool related to excessive water retention such as fibre shattering during the cryogenic deburring described hereinafter.
  • the wool after scouring by the process of the present invention is advantageously dried prior to deburring, carding and combing. It is surmised that, due to differential affinity of the wool for the solvents of the present invention over water, this results in the reduced drying effort recognized in wool scoured in accordance with the present invention.
  • the wool is dried to the optimum level required for either deburring if required or to that required for efficient carding and combing.
  • the mass of animal hair fibre in tip down fashion may be passed through the scouring liquor in countercurrent manner wherein the fibres travel through the scouring liquor in an opposite direction thereof.
  • the separate masses of animal hair fibre are retained in different baskets in a batch process or in separate sections of a perforated or mesh conveyor belt in a continuous process. It is preferred to pass the hair fibre in tip down fashion through the scouring liquor because approximately 50% of the impurities are located in the hair tips (i.e. approximately the top 2 cm of the animal hair) and such impurities are best removed by the flushing action of the solvent being drained from the mass of fibre.
  • each scouring vat may be provided with a sump or drain for settlement of relatively heavy contaminants. It is sasier when using organic solvent scours to maintain the animal hair fibre masses separate from each other because the fibres do not "slump" or lose their coherent nature and thereby remain more separate. However in aqueous scours wool may "slump" and thus to overcome this problem the separate fleeces or masses of hair fibres may retain in a mesh bag or basket to inhibit “slumping". In this arrangement the mesh or perforated flexible bag may retain the coherence of individual fleeces.
  • the fleece or discrete fibre masses may be dried in any suitable fashion such as being spun dried or air dried. The same occurs after passage through an organic solvent scour. In drying after the aqueous scour the masses of hair fibres may be retained in their individual mesh bags. In this arrangement the spin dryer or centrifuge may be filled with solvent to reverse the fleece "slumping".
  • the scouring apparatus utilized may include a conveyor of serpentine or sinusoidal shape comprising a plurality of peaks and troughs.
  • the troughs may be located in associated scouring vats with wringers located downstream from each scouring vat.
  • the final scour bath liquor after suitable make up to form the initial scour liquor.
  • the make up solvent in part may be supplied by the condensate recovered from the preferred dryer gas effluent.
  • the rest, and replacement solvent for the _ downstream solvent bath or baths may be provided by recovery of solvent from the solvent jet scour if used and the contaminated initial bath liquor.
  • the solvent may be distilled to recover solvent or solvent azeotrope (as the case may be) leaving a residue of crude lanolin.
  • the preferred cationic exchange substance is selected from the group consisting of bentonite and montmorillionite clays, with bentonite being particularly preferred.
  • cryogenic deburring As an alternative less harsh process it is now proposed to utilize cryogenic deburring as a further embodiment of the present invention, wherein the scoured wool is immersed in liquid nitrogen for sufficient time to freeze the burrs to make them brittle. The wool is then allowed to warm at ambient temperatures until the fibres are thawed but the burrs are still frozen. The wool is then crushed in an impact crusher to fragment the burr, which then winnows out of the wool during carding and combing.
  • a possible disadvantage of cryogenic deburring when used after conventional scouring processes is that, due to differential thawing of the wool, some fibres may remain frozen and are subsequently shattered during the crushing step. It is theorized that the source of the thawing problems of the wool is the water content of the aqueous scoured wool.
  • the present process by the use of the present solvents, provides wool of a lower and more homogeneous water content. This renders the scoured wool more suitable for cryogenic deburring since it is the water, having a higher specific heat than wool, is presumed to be the cause of prolonged thawing times of wool.
  • Wool tips scoured in accordance with the present invention are preferably subsequently immersed in liquid nitrogen for approximately 25 seconds.
  • the wool is then drained of liquid nitrogen and preferably allowed to dry at ambient temperature for 50 to 70 seconds.
  • the wool containing the frozen burrs is then preferably crushed in an impact crusher to effect disintegration of the burrs.
  • a major advantage of the present inventive process lies in the retention of the character of the source raw wool throughout the process. This enables the scoured wool to be assessed for its spinning and other characteristics after scouring, whereas wool scoured by prior art processes has lost character and cannot be so assessed. Overseas buyers have tended to buy raw wool to ensure that the spinning performance of the wool could be accurately assessed.
  • wool scoured by the present process has attained market acceptability it will be possible to establish wool scouring plant running a process in accordance with the present invention at the shearing shed, thus reducing shipping costs.
  • scoured wool is easier for mechanical packing apparatus to handle, eliminating the standard shipping bale and enabling the use of, for example, high density vacuum packing. obviously, the scoured wool is a higher value commodity than raw wool.
  • bentonite successfully removes dirt and high molecular weight (oxidised) lipids from contaminated solvent.
  • the oxidised lipid is retarded in the proximal fraction of the filter bed and can readily be scraped off to allow fresh bentonite to be used in its stead.
  • This oxidised lipid (and dirt) mixture has a potential use as an organic fertilizer.
  • Wool is placed tip down on a basket or conveyor and the tip slowly immersed to a depth of approximately 2 cm of scour liquor (either aqueous or solvent) .
  • the wool is left to thoroughly wet the tip (2 min aqueous or 30 sees solvent) before withdrawal.
  • the dirty scour liquor produced by the tip saturation is kept separate
  • the process is then continued by slow immersion of the whole staple in a solvent (TCE preferred) scour liquor followed by a rapid removal of the staples from the solvent.
  • a solvent TCE preferred
  • This is effected by movement of the basket of wool or by pumping and withdrawal of solvent in the conveyor system.
  • the slow immersion and quick withdrawal process is repeated for a period of 6-8 minutes per sample of wool being cleaned.
  • the process is designed to move contaminants in a distal direction (i.e. towards the tip) and thereby continually draw these contaminants in one direction along the staple profile.
  • a cascade effect is used to ensure that wool is being exposed to solvent which itself contains progressively less contaminants as the cleaning process continues. Solvent cleaning is covered in a separate component of this submission.
  • Quantitative expression of solvent contamination varies from ⁇ 3g/l of lipid at the outlet (cleaned wool) end of the cascade to a value of up to lOOg/l of lipid at the inlet (dirty wool) end of the cascade. These values are for lipid contamination but would include some dirt particles which do not quickly settle. The settled dirt particles (sediment) are normally removed by using a gravity sink which enables ready removal of the heaviest contaminants.
  • the chromatography bed for bentonite- trichloroethane is described as follows:- - wt of bentonite 1kg void volume 1.31 position of dirt/lipid retardation on column occurs in proximal or top 8% of chromatography bed.
  • improved processability of animal hair fibres after scouring may be measured by suitable parameters such as the top/noil ratio and average fibre length in the top. These two parameters are largely dependent on the degree of fibre entanglement and tensile strength of the wool. By experiments now undertaken improved top/noil ratio and average fibre lengths have been obtained in regard to wool processed by the present invention.
  • chlorinated hydrocarbons used in the present invention that other halogenated hydrocarbons may be used such as brominated or iodated derivatives. Also halogenated ethers may be utilized.
  • - solvent scouring step as stated previously directional air/water jets or air/solvent jets may be used for example in a spa bath arrangement. These directional jets may be used in addition to or to replace conventional agitation steps used in aqueous or organic solvent scouring processes whereby the wool may be passed through vats of aqueous scouring liquor or vats of organic solvent.
  • the abovementioned directional jets may also be used in the treatment step with the solvent to improve fibre strength if desired.
  • the wool scouring process in a batch procedure could be carried out in large automatic washing machines using agitation, soak, wash, rinse and spin dry cycles with water (plus detergents) for the first cycle to remove dirt etc., and then solvent for the soak, wash, rinse and spin dry cycles or any combination thereof.
  • the specially designed washing machine would have automatic valves to direct the aqueous scour liquors and residues to a standard scour liquor treatment process and then later to direct the solvent liquors to the solvent and lanolin recovery processing steps.
  • the wool fleece should be in tip outward configuration and should be confined within an open mesh container to avoid fibre entanglement. This container could be flexible or fixed with flexible being preferred.
  • the tips are pre treated so as to remove impurities such as dirt, grease, sweat and the like and loosen the tips which may be annealed together by the impurities.
  • the tips may be passed through an aqueous system.
  • the tips are in a tip down orientation and passed through a shallow bath or vat in which only the tips are immersed.
  • the bath may also contain an appropriate detergent such as those described previously.
  • the water may pass through the perforations in a perforated belt or through a mesh basket to contact the tips.
  • the impurities may fall into the vat and these may include oxidized lanolin, greases, sweat, salts and the like.
  • a press may also be used to ensure contact of the tips with the water in the form of liquid or spray.
  • the water may be applied to the tips in the form of a spray or mist and may also be heated to emit a tip cleaning vapour admixed with detergent.
  • the wool fleece may be stationary and the aqueous system or vat move through the stationary tips which in some cases may also adopt a tip up orientation.
  • the tips may be subjected to an atmosphere of suitable - organic solvent such as those described previously or which may include petroleum or oil based solvents such as naphtha.
  • suitable - organic solvent such as those described previously or which may include petroleum or oil based solvents such as naphtha.
  • the tips may be sprayed with a mist or spray of organic solvent.
  • one litre of organic solvent may be used per fleece which may be 4-5 kg in weight.
  • the tips may be in a tip up or tip down orientation with the tip up orientation being preferred.
  • the fleece may pass through the pre treatment zone in 30 - 60 seconds and then be subjected to a drying or retention period of 3-4 minutes before the entire fleece is subjected to a scouring action.
  • the tips may pass through a vat containing the mist of organic solvent equipped with a reservoir of organic liquid in the base thereof. Again the impurities from the tips such as those described above may fall to the bottom of the vat. Again while it is possible for the vat to move through the stationary tips it is very much preferred for the tips on a perforated conveyor belt or mesh basket to move through a stationary vat.
  • water is a more effective cleaning agent than organic solvents and thus may be the preferred agent utilized in regard to tip pre treatment.
  • organic solvents are preferred scouring agents because they do not cause "slumping" of the animal hair fibres as is the case with water.
  • aqueous scouring agents are suitable avoided especially with the objective of minimizing fibre entanglement.
  • FIG 1 is a flow sheet of the process of the invention
  • FIG 2 is a schematic drawing of the process of the invention utilizing a batch procedure
  • FIGS 3a, 3b and 3c are schematic drawings of the process of the invention utilizing a continuous procedure
  • FIG 4 is a schematic drawing illustrating the process of the invention utilizing an alternative continuous procedure to that shown in FIGS 3a, 3b and 3c;
  • FIG 5 illustrates a schematic drawing of a recycling procedure for cleaning of solvent used in the process of the invention.
  • FIG. 5 illustrates a schematic drawing of a recycling procedure for cleaning of solvent used in the process of the invention.
  • FIG. 5 illustrates a flow sheet in FIG.
  • the wool fleeces which are rolled up separately from each other are unrolled before being placed tip down on a mesh conveyor and subjected to a tip pre treatment procedure before being scoured in an organic solvent. This causes separate fleeces to be broken up into clumps of wool before drying of the scoured wool.
  • Used solvent is then passed to a centrifuge to recover spent solvent which is subsequently filtered to remove dirt and oxidized lanolins.
  • the spent solvent is then distilled and - the subsequently obtained recovered solvent is passed to the tip pre treatment medium. Wool wax may be recovered from the distillation procedure for subsequent transportation to the refinery for utilization as lanolin products.
  • FIG 2 there is shown a stack of separate fleeces 10 which are placed tip down in baskets 11 carried by conveyor 12 having head rollers 13, tail rollers 14, and intermediate idler rollers 15 approaching tip pre treatment zone 16 in scouring tank 9, which is defined by downward ramp 17, level portion 18 and upward ramp 19.
  • the tips of the fleece may be subjected to gentle cleansing action as described previously.
  • the remainder of each fleece does not contact the scouring medium 20 which may also be applied to the fleeces by agitation sprays 21 in the tip pre treatment zone 16.
  • the fleeces in baskets 11 pass through level zone 22 wherein they are removed from the scouring medium before being passed into the scouring zone 23.
  • downward ramp 24 which passes baskets 11 into zone 23 wherein the fleeces are fully immersed in scouring medium 20 which is retained in bath 9.
  • drains 26 and 27 wherein spent scouring medium may be passed for filtration and further purification.
  • the baskets 11 After passing through scouring zone 23 the baskets 11 are conveyed up upward ramp 28 to unloading zone 29 wherein the fleeces 10 are unloaded into centrifuge 30 for drying purposes.
  • the fleeces may then be passed to a - secondary conveyor 31 wherein the fleeces 10 are passed separately through a dryer 32 before being passed into a cryogenic bath 33 before being subjected to crushing rolls 34.
  • the fleeces 10 may then be loaded onto table 35 in stacked relationship for subsequent treating operations which include carding for example.
  • Conveyor 31 is controlled by head roller 31A, tail roller 3IB and intermediate idler rollers 31C as shown.
  • FIGS 3a, 3b and 3c there is shown a plurality of fleeces 10 in stacked relationship loading and layout table 36 adjoining scouring tank 9.
  • the fleeces 10 are loaded onto perforated or mesh conveyor 37 separately and subsequently passed into tip pre treatment zone 38.
  • This zone includes skimmer box 39, pump 40 and agitation sprays 41, as well as drains 26 and 27 wherein spent scouring fluid 43 may be passed for purification treatment which includes filtering.
  • the skimmer box 39 and pump 40 are useful in clearing top surface debris from scouring fluid 43.
  • idler roller 44 There is also included idler roller 44.
  • the fleeces 10 may then be passed into scouring zone 45 wherein the fleeces are fully immersed in scouring fluid 43 which also includes skimmer box 39 and pump 40. Agitation sprays 41 are also utilized in scouring zone 45 which also includes idler roller 44.
  • the fleeces 10 may then be subsequently passed through a rinsing zone 46 which is defined by upward ramp 47 - of conveyor 37.
  • separator 48 which breaks fleeces 10 into clumps, head pulley or roller 49 and idler roller 44.
  • the clumps may then be passed through chute 50 into centrifuge 51 powered by motor and gearbox assembly 52.
  • centrifuge 51 the fleeces 10 are collected into an aggregate.
  • wool and remaining solvent is passed from centrifuge 51 up conveyor 53 to cyclone separator 54 wherein the remaining solvent is discarded up chimney 55.
  • the remaining solvent passed up chimney 55 may constitute about 3% of the initial solvent that is utilized.
  • Subsequently cleaned wool may be inspected for quality at inspection point 56 before being passed up pneumatic conveyor 57 into storage bin 58 containing baffle 59 and dust collector 60.
  • the final cleaned and scoured wool may be passed through discharge location 61 for subsequent transportation and storage.
  • electric motor 62, suction fan 63 for pneumatic conveyor 57 and air exhaust 64 is also provided.
  • FIG 4 there is illustrated an alternative continuous process which does not use a tip pre treatment procedure.
  • the fleeces 10 from loading table 65 are passed into conveyor 66 above the level of scouring fluid 43 before being passed into scouring zone 45. Subsequently a continuous process as described above in FIGS 3b and 3c is utilized.
  • the recycling of solvent is shown in FIG 5 wherein the scouring tank 9 is supplied with clean detergent or solvent through line 67.
  • the tank is provided with drains 26 and 27 wherein spent or dirty solvent is passed through line 68 to pressure filter 69 before reaching distillation vessel 70."
  • the pressure filter 69 may be precoated with diato ite, bentonite, acid activated clay, carbon or montmorrilonite.
  • pump 71 as well as condenser 72 for passage of clean solvent through line 67. Stabilizers may also be added as shown if required.
  • line 73 for passage of wool wax 74 or other materials collected from the distillation vessel for further refining. Cooling water may be passed through condenser 72 through lines 75 and 76.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

Un procédé de traitement de fibres de poils d'animaux comprend une première étape d'obtention d'une pluralité de masses discrètes de fibres de poils d'animaux optionnellement dans leur alignement et leur forme d'origine, suivie par une seconde étape dans laquelle on nettoie à fond la pluralité de masses séparément les unes des autres dans un milieu de nettoyage. L'étape de nettoyage comprend un traitement initial de la pointe des fibres suivi par un autre traitement dans lequel on immerge totalement les fibres dans le milieu de nettoyage lequel est avantageusement un solvant organique. On peut également procéder au nettoyage à fond dans un processus par lots dans lequel les masses de fibres de poils d'animaux sont placées dans des conteneurs perméables séparés que l'on trempe ensuite dans le milieu de nettoyage. Dans un autre mode de réalisation on peut adopter un processus continu dans lequel on place les masses de fibres de poils d'animaux séparément dans une relation espacée sur une bande de manutention passant ensuite dans le milieu de nettoyage. On combine avantageusement la pluralité de masses de poils d'animaux dans un agrégat avant le cardage.
EP19890905598 1988-05-17 1989-05-16 Procede de traitement des poils d'animaux Withdrawn EP0372038A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
AU8317/88 1988-05-17
AUPI831788 1988-05-17
AUPI870288 1988-06-09
AU8702/88 1988-06-09
AU2857/89 1989-02-22
AUPJ285789 1989-02-22

Publications (1)

Publication Number Publication Date
EP0372038A1 true EP0372038A1 (fr) 1990-06-13

Family

ID=27157434

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890905598 Withdrawn EP0372038A1 (fr) 1988-05-17 1989-05-16 Procede de traitement des poils d'animaux

Country Status (2)

Country Link
EP (1) EP0372038A1 (fr)
WO (1) WO1989011557A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6330786B1 (en) * 1999-09-10 2001-12-18 Great Plains Buffalo Products, Inc. Buffalo hair yarn and fabric and method of making buffalo hair yarn and fabric
AU2011216554B2 (en) * 2010-02-19 2016-11-10 Agresearch Limited Fibre and particulate processing
EP2764074B1 (fr) * 2011-10-07 2017-06-21 Erutan BV Procédé pour laver de la laine en suint, procédé pour séparer la lanoline de ladite laine en suint et laine et lanoline pouvant être obtenues par ces procédés
CN103614783A (zh) * 2013-12-05 2014-03-05 苏州骏熠纺织有限公司 一种生丝浸渍装置
CN115251120A (zh) * 2022-07-14 2022-11-01 山东大学 一种猪蹄脱毛方法及脱毛装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB258615A (en) * 1926-09-18 1928-03-19 Elisee Charles Duhamel Process of washing or cleaning wool
GB304050A (en) * 1928-02-08 1929-01-17 Frederick James Cowie Improvements in and relating to wool or like washing and scouring machines
GB810134A (en) * 1955-04-05 1959-03-11 Stiftelsen Svensk Textilforskn Improved method and means for washing wool
GB867451A (en) * 1958-12-11 1961-05-10 Separator Ab A method and apparatus for continuous soaking of fibre material with washing liquid
GB1130218A (en) * 1966-05-11 1968-10-09 W & J Whitehead Laisterdyke Lt Process and apparatus for solvent scouring of raw wool

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8911557A1 *

Also Published As

Publication number Publication date
WO1989011557A1 (fr) 1989-11-30

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