JPS5844761B2 - Method for manufacturing animal hair top using washed animal hair material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing an animal hair top using washed animal hair material.

More particularly, the present invention relates to a method of manufacturing animal hair tops using a washed animal hair material that is tailored to retain appropriate amounts of residual soapy and fatty materials.

As used in this specification, the term "soapaceous substance" means
A substance that is naturally present in animal hair and can be extracted from animal hair with ethyl alcohol.

The content of soapy substances in washed animal hair is determined by calculating the absolute dry weight of washed animal hair and the weight of soapy substances extracted from washed animal hair with ethyl alcohol, according to Japanese Industrial Standard L102.
2-1961, Section 7, 8.2, and is expressed as the ratio of the measured weight of soapy material to the absolute dry weight of washed animal hair.

As used herein, the term "fatty material" means a material naturally present in greasy animal hair and extractable from the animal hair with ethyl ether.

The content of fatty substances in washed animal hair is determined by calculating the absolute dry weight of the washed animal hair and the weight of the fatty substances extracted from the washed animal hair with ethyl ether, according to Japanese Industrial Standard (JIS) L1022.
-1961, and is expressed by the ratio (φ) of the measured weight of fatty material to the absolute dry weight of washed animal hair.

It is known that seated animal hair, for example oily wool, is usually washed with a warm water solution of a detergent, such as a surfactant and an alkali salt.

This method will hereinafter be referred to as the detergent washing method for animal hair.

This method of detergent washing is effective in removing soapy substances as well as fatty substances from animal hair.

However, this method has the following drawbacks.

(1) Sometimes the surface and mechanical properties of animal hair deteriorate due to the action of alkalis in cleaning solutions.

(2) Sometimes animal hair fibers become entangled and felted during cleaning operations.

(3) Washed animal hair exhibits reduced elasticity and stretchability.

(4) Washed animal hair exhibits poor cursing and top forming properties during the production of tops, and is also poor in spinnability.

This feature reduces the production efficiency of animal wool.

(5) Waste water with foul odor is discharged in large quantities from the cleaning process and pollutes the environment (rivers, lakes and seas).

(6) Purification of discharged wastewater requires expense.

(7) Heat energy consumption is high.

Various methods for washing hair using organic solvents have been proposed to improve the drawbacks of the conventional detergent hair washing methods as described above.

For example, C-8・■・R-0, method (Wool Handb
ook, IntersciencePublish
ers, Vol.II, Partl, 19
1969, pp. 71-74), Centriure method (Wo
olHandbook, pp. 74-76), the Sober method (Japanese Patent Publication No. 38-10374) and JP-A-537
The method described in No. 4178 and TextileAsia
, September 1971, pp. 23-25, uses organic solvents for cleaning seated animal hair, especially oily wool.

This type of washing method is hereinafter referred to as a solvent hair washing method.

In solvent washing methods, organic solvents are recovered from washing waste.

Therefore, in the solvent hair washing method, substantially no washing liquid is discharged.

This feature makes it virtually free from environmental pollution.

However, this solvent hair washing method has not been implemented industrially to date due to the following drawbacks.

(1) This method is not satisfactory in eliminating water-soluble substances from solid inorganic substances, such as small particles of sand, and fur.

This results in insufficient white discoloration top formation and spinnability.

Therefore, in order to eliminate the above-mentioned drawbacks, it is necessary to remove the solid inorganic particles by a final washing with hot water or detergent solution after solvent washing or by mechanical treatment.

This increases the cost of manufacturing washed animal hair.

(2) This method removes too much fatty material from the matted animal hair.

For this reason, the resulting washed animal hair is inferior in flexibility, conjugability, and texture.

A modified method of solvent washing is disclosed in Japanese Patent Publication No. 38-10347.

In this method, the fat wool is opened, the opened fat wool is washed with water, and then washed with a non-alcoholic organic solvent.

The above-described combination of washing with water and hair washing is repeated two or more times, and the washing of the animal hair with alcohol is performed between the combinations with the above-mentioned washing with water and hair washing.

However, this method is not sufficient to completely eliminate the drawbacks of traditional solvent hair washing methods and exhibits the following additional drawbacks.

(1) Alcohol excessively excludes fatty substances from animal hair, and the resulting animal hair has poor spinnability.

(2) Large-scale equipment is required to implement this method.

This equipment is extremely expensive. (3) Process and quality control is difficult and complex.

(4) The productivity of washed animal hair in this method is poor.

Another modification of the solvent hair washing method is disclosed in JP-A-53-74178.

In this method, the greasy wool is washed with an organic solvent and then with hot water.

However, this method cannot eliminate the drawback of excessive extraction of fatty substances from the fur.

Hot water washing is effective in removing water-soluble substances from animal hair.

However, this reduces the flexibility and binding properties of the animal hair.

Under the foregoing circumstances, the known methods of washing brushed animal hair do not suggest the best way to obtain washed animal hair.

One object of the present invention is to provide a method for producing an animal hair top of excellent quality using a washed animal hair material that has excellent top-forming and spinnability.

Another object of the present invention is to provide a method of manufacturing animal hair tops at low cost using washed animal hair materials with desired softness and texture.

The method of the present invention which achieves the above-mentioned object is based on the total weight of an organic solvent that cannot dissolve soapy substances and the cleaning liquid when cleaning animal hair with a side surface using a cleaning liquid.
0φ, coarse animal hair extracted from the same type of animal hair as the animal hair to be washed, and a cleaning solution consisting of animal hair with a surface of 0.04 g/c11 at a density of the following: While immersing the opened fibers, move one or both of the animal hair and the cleaning liquid at a relative speed of In/min or more relative to the other, so that the resulting cleaned animal hair has a weight of 20% of its weight. The cleaning liquid is removed from the cleaned animal hair to the extent that the cleaning liquid is retained in an amount corresponding to 200 φ, and the animal hair containing the cleaning liquid is dried, and the residual amount of soapy substances in the animal hair material that has been cleaned thereby. The method is characterized in that the animal hair top is produced by preparing the washed animal hair to a level of 1 to 3 weight by weight and the residual amount of fatty substances to 0.3 to 5 weight, and subjecting the washed animal hair to a top process. It is.

The washed animal hair material specified above is obtained by washing the greasy animal hair material with a specified washing liquid, which washing liquid contains an organic solvent incapable of dissolving soapy substances and a 0.0. It consists of 1 to 20% of coarse animal hair fat extracted from the same type of animal hair as the animal hair to be cleaned.

The animal hair material that can be used in the present invention is not limited to a particular form of animal hair material, as long as the animal hair material is washable.

For example, the animal hair material can be selected from sheep, cashmere goat, angora rabbit, angora goat, smut, chinchilla, mink, fox, astrakhan, raccoon, raccoon, weasel, jack cat, and lamb wool materials. .

In addition, animal hair materials include released hair, web, sliver,
1 - It can be in the form of a hem, thread, knitted fabric, woven fabric, felt, non-woven fabric or fur.

In the washed animal hair material used in the method of the present invention, it is essential that the animal hair has a residual amount of 1 to 3 parts by weight of carbonaceous substances and 0.3 to 5 parts by weight of residual fatty substances.

Residual soapy and fatty substances in the amounts specified above are subject to mechanical damage occurring during various mechanical processes, such as squeezing, rotary drying, cursing, spinning, winding and combing, as well as during drying. It is effective in protecting animal hair from thermal damage that occurs.

Also, the specified amounts of residual soapy and fatty materials are effective to obtain proper softness and satisfactory texture of the resulting washed animal hair.

When the content of residual soapy and fatty substances in the animal hair is less than 1 weight factor and 0.3 weight factor, respectively, the resulting washed animal hair material has a rough texture, poor cursing properties, and insufficient spinning. and other mechanical processing properties.

Also, when the content of residual soapy and fatty substances in the animal hair is more than 3 wt φ and 5 wt φ, respectively, the resulting washed animal hair material has a fatty or sticky texture, poor cursing, spinning and other problems. The properties of mechanical processing are shown.

In the case of wool materials, the content of residual soapy substances in the washed wool ranges from 1.2 to 2.5 parts by weight, and the content of residual fatty substances ranges from 0.3 to 5.0 parts by weight. It is preferable that

It is more preferred that the washed wool has 1.5 to 2.5 parts by weight of residual soapy material and 0.5 to 3 parts by weight of residual fatty material.

In the case of cashmere goats, the washed cashmere goat hair material contains 1° to 2.5 parts by weight of residual soapy matter and 0.
．． It is preferred to have a residual fatty material of 3 to 2.5 parts by weight.

It is important to note that a washed animal hair material possessing the amounts of residual soapy and fatty substances specified in the present invention has never been obtained by the prior art.

That is, the washed animal hair material obtained by the method of the invention is new and can be obtained for the first time by the washing step used in the method of the invention.

In the cleaning step of the method of the present invention, the greasy animal hair material is treated with an organic solvent that cannot dissolve soapy substances and the same type of greasy animal hair to be cleaned, with a diameter of 0.1 to 20 φ, based on the total weight of this cleaning liquid. It is essential to wash with a cleaning solution consisting of coarse animal fat extracted from animal hair.

The combination of an organic solvent and a specified amount of coarse animal hair will leave the resulting cleaned animal hair with 1 to 3 parts by weight of residual soapy material and 0.
．． It is effective in retaining 3 to 5 weight percent of residual fatty material.

The washing step of the method of the invention is also effective in producing washed animal hair materials in which certain amounts of residual soapy and fatty substances are uniformly distributed throughout the animal hair.

If the distribution of residual soapy and fatty substances in the animal hair is not uniform, the resulting washed animal hair will exhibit poor topping and spinnability, and the resulting product will exhibit poor hand.

When the organic solvent is hydrophilic, for example an aliphatic alcohol or a ketone, the resulting animal hair has a very low content of residual soapy substances.

For example, if oily wool is washed with a wash solution consisting of ethyl alcohol for 30 minutes at a liquid ratio of 1:100 and a temperature of 78°C, the resulting washed wool will contain less than 1 part by weight of residual soapy substances, e.g. To be held in an amount equal to or less than its weight.

Also, even when using organic solvents that cannot dissolve soap substances, when the content of wool fat in the washing liquid is less than 0.3 parts, the resulting washed wool contains a very small content of retained residual fatty substances. show.

For example, when oily wool is washed with a washing solution consisting of 1,1,1-toIJ chloroethane and 0.04% wool fat, the resulting washed wool typically has a residual fat content of less than 0.2%. Denote a substance.

Furthermore, if the content of wool fat in the cleaning solution is more than 20%,
The resulting washed animal hair exhibits an excessively high content of residual fatty substances.

Usually, the cleaning operation is carried out at a temperature of 0 to 100°C, more preferably 15 to 100°C.
Preference is given to carrying out at a temperature of 35° C. and a liquid ratio of 1:20 to 1:300.

The organic solvent consists of at least one hydrophobic organic compound and is preferably selected from the group consisting of liquid hydrocarbons, liquid halogenated hydrocarbons, liquid ethers and liquid esters.

Moreover, it is preferable that the hydrophobic organic solvent exhibits a boiling point in the range of 30 to 150°C.

Liquid hydrocarbons that can be used as hydrophobic solvents are preferably n-heptano, n-hexane, isohexane, n-
Octane, isooctane, 2,2-dimethylbutane, petroleum ether, petroleum benzine, ligroin, petroleum spirit, petroleum natsuta, 2-pentenes, mixed pentenes, cyclohexane, methylcyclohexane, benzene, toluene,
selected from the group consisting of xylene and ethylbenzene.

The liquid halogenated hydrocarbon is preferably methylene chloride, chloroform, carbon tetrachloride, ethylene chloride, ethylidene chloride, ■, 1,1-trichloroethane, 1,1,2-
Trichloroethane, 1,1゜1.2-tetrachloroethane, 1,2-dichloroethylene, trichlorethylene,
Tetrachlorethylene, isopropyl chloride, ethyl bromide, ethylene bromide, 1,2-dichloropropane, butyl chloride, amyl chloride, chlorobenzene, fluoro-IJ/
70 methane and 1,1,2-trichloro-1,2°2-trifluoroethane.

The liquid ether is preferably selected from the group consisting of ethyl ether, isopropyl ether, amyl phenyl ether, dioxane, methylfuran, tetrahydrofuran and tetrahydropyran.

The liquid ester is preferably methyl acetate, ethyl acetate, n-propyl acetate, isopropyl acetate, n-butyl acetate, isobutyl acetate, nibutyl acetate, n-amyl acetate, isoamyl acetate, methylisoamyl acetate, sec-hexyl acetate, selected from the group consisting of methyl propionate, ethyl propionate, butyl propionate and ethyl butyrate.

The cleaning liquid may contain a small amount of at least one hydrophilic organic solvent, such as a lower aliphatic alcohol, such as ethyl alcohol, as long as the objectives of the invention are achieved.

The organic compound of the solvent is preferably selected from liquid halogenated hydrocarbons which exhibit adequate cleaning activity on greasy animal hair materials and very good non-flammability.

The most preferred liquid hydrocarbon is methylene chloride, ■.

It is selected from 1,1-trichloroethane and 1,1,2-trichloroethane, which exhibit suitable vapor pressure and low toxicity to humans.

After the cleaning operation is completed, a cleaning solution is removed from the resulting cleaned animal hair material to such an extent that the resulting cleaned animal hair material retains an amount of cleaning fluid corresponding to 20 to 200% of its weight;
The organic solvent is recovered at the same time as the obtained washed animal hair material is dried.

Typically, the drying operation is preferably carried out at a temperature of 30 DEG to 160 DEG C., which temperature is suitable for recovering the solvent without thermally degrading the quality of the washed animal hair.

Also, following cleaning operations, residual solid particles,
For example, sand can be mechanically removed from washed animal hair materials.

This operation is usually performed using a hair opening machine.

The cleaned animal hair material of the present invention can be subjected to additional cleaning operations.

In this operation, the cleaned animal hair material is washed with an aqueous cleaning solution containing a small amount of detergent and then with warm water.

In this case, the concentration of detergent in the aqueous cleaning solution is usually 0.
．． 5 weight φ or less, and the temperature of the cleaning liquid is preferably in the range of 40 to 45°C.

This additional washing operation is effective in removing residual water-soluble substances from the cleaned animal hair material, if necessary.

Oily animal hair can be washed in the form of animal hair aggregates.

If the density of this mass is high, it is difficult to remove solid impurity particles, such as sand, from the mass.

Therefore, oily animal hair is washed in the form of a spread fiber aggregate having a density of 0.04 g/i or less.

This opened animal hair aggregate is processed by a hair-opening machine for fat animal hair aggregate.
This can be accomplished, for example, by passing the hair through a conventional hair opener or a special pin-roll type hair opener in ambient air, and then suspending the opened oily animal hair in a washing liquid.

Alternatively, the opening operation can be carried out in the wash solution during washing.

In the latter case, at least at the end of the wash,
The density of the opened animal hair aggregate must be 0.04 g/cri or less.

It is also necessary to move one or both of the animal hair and the cleaning solution relative to each other at a relative speed of 1 kph/min or more.

A preferred embodiment of the method of the invention will be described with reference to FIG.

Referring to FIG. 1, oily animal hair 1 is washed in a washing device 2 with a washing liquid supplied from a washing liquid tank 3. As shown in FIG.

The cleaning liquid is prepared in tank 3 by mixing a predetermined amount of solvent supplied from source 4 with a predetermined amount of animal hair fat supplied from source 5.

The washed animal hair is taken from the washing device 2 to a squeezing device 6 where it is squeezed to a predetermined degree.

The squeezing device 6 can be at least one pair of nip rollers or a centrifuge.

The squeezed animal hair is supplied to the dryer 7, where the solvent contained in the squeezed animal hair is evaporated by the heat supplied from the supply source 11.

recirculating a portion of the cleaning liquid discharged from the cleaning device 2 to the cleaning liquid tank and mixing therein with an additional amount of fresh solvent;
The concentration of fatty substances in the cleaning solution can be adjusted.

The remainder of the cleaning solution discharged from the cleaning device and the waste solution of the cleaning solution discharged from the squeezing device are collected.

The collected waste liquid is fed to a solvent recovery device 8 where the solvent is evaporated and recovered from the waste liquid, and the residual tallow is also recovered.

The recovered solvent is recycled to the source 4 of solvent.

A portion of the recovered animal hair and fat is also used to prepare a cleaning solution.

The heat source 11 can be hot air, steam, hot water or high frequency waves.

The steam generated in the dryer 7 is collected and recovered by the solvent recovery device 10.

The recovered solvent is recycled to the source 4 of solvent.

Washed animal hair 12 is obtained from the dryer 7.

If necessary, the washed animal hair 12 is passed through a hair opener 13 where solid impurities 14 are removed.

The opened animal hair can be further cleaned in an additional cleaning device containing hot water and detergent at a predetermined temperature.

The washed animal hair is dried in a dryer 16, and washed animal hair 17 is obtained.

The washed animal hair is sent to a top making step 18 and formed into an animal hair top.

In carrying out the cleaning step of the method of the present invention, the cleaning is preferably carried out in an airtight closed cleaning apparatus.

Further, it is preferable that the squeezing device and the dryer are hermetically sealed.

Another preferred embodiment of the invention is shown in FIG.

Referring to FIG. 2, the fat animal hair 21 is opened by a hair opening machine 22 to form a fiber aggregate, and then supplied to a cleaning device 23.

The cleaning liquid is prepared in cleaning liquid tank 24 by mixing a predetermined amount of solvent supplied from source 26 with a predetermined amount of coarse animal hair supplied from source 25.

The greasy animal hair is washed in a washing device 23 with a washing liquid supplied from a tank 24 .

The washed animal hair 26a is removed from the washing device 23 and fed to a squeezing device 27, where the amount of washing liquid contained in the washed animal hair is reduced to a predetermined degree.

The squeezed animal hair is fed to a dryer 28, where the solvent is evaporated and dried animal hair 29 is obtained.

The dried animal hair is sent to a top making step 34 and formed into a top.

The waste washing liquid discharged from the washing device 23 and the squeezing device 27 is fed to a separator 30, where the used washing liquid containing coarse animal fat is separated from solid impurities.

The separated portion of the used cleaning solution is recycled to the cleaning solution tank 24 and mixed with an additional amount of fresh solvent supplied from the source 26 to adjust the concentration of coarse animal fat to a predetermined value. .

The remainder of the separated used cleaning liquid is supplied to a solvent recovery device 31, where the solvent is separated from the coarse animal fat.

This solvent is recycled to the solvent source 26 and the coarse animal fat is recycled to the source 25 as required.

The solid impurities separated in the separator 30 are supplied to a solvent recovery device 32, where the solvent is evaporated from the solid impurities, and
It is then recycled to the source 26 of solvent.

The solvent separated from the squeezed animal hair in the dryer 28 is
The solvent is recovered by the solvent recovery device 33, and then the solvent is recovered by the solvent supply source 2.
Recirculate to 6.

The invention is further illustrated by the following specific examples, but the invention is not limited by these examples.

Reference Example Finger wool was treated with warm ethyl ether to extract fatty substances.

Thereafter, the wool was extracted with hot ethyl alcohol in a Tuxlet extractor to extract the soapy substances.

The soapy substances extracted were based on the dry weight of fingered wool, containing a mixture of 8.55% neutral fats and subsaponifiable substances soluble in petroleum ether, and metals expressed as potassium soaps of 43.10. It turns out that it consists of soap.

Metal soap is based on the dry weight of finger wool, 2.5
It consisted of a metal portion expressed as potassium of 9% and a fatty acid portion of 40.51%.

The fatty acid portion has a neutralization value (acid value) of 96.33 and 582.
It had an average molecular weight of 46.

The metal portion contained about 75 parts potassium, about 25 parts sodium, and unmeasurable amounts of magnesium, calcium, and aluminum.

Example 1 Approximately 200 kg of Australian merino wool (quality number 64'S, crude wool fat content 16.0 weight ratio and density 0.31) was washed with the following washing solution.

The cleaning solution consists of a solvent consisting of 1,1.1-4-lichloroethane (manufactured by Asahi Dow Co., Ltd., trade name: Chlorocene VG) and 5% of the same type of wool as mentioned above, based on the total weight of the cleaning solution. It was prepared by mixing with extracted wool fat.

The fat wool was washed using the washing solution at a temperature of 22° C. for 8 minutes in a closed continuous washing device while opening the fibers to various degrees within the range shown in FIG. 3.

The cleaning device has four cleaning tanks, a plurality of hair removal pin rollers located in the first tank, and one roller located in the fourth tank.
It was equipped with a pair of squeezing rollers and a valve located at the bottom of each tank for draining solid inorganic impurities such as sand removed from the wool.

In this cleaning device, the wool is opened and 0.009g
The fiber aggregate had a density of /-, and the opened wool moved at a relative speed of 4 threads/min with respect to the washing liquid.

Also, the content of solid inorganic impurities in the fourth tank was maintained at a level of 0.24% or less.

The washed wool is squeezed with a squeezing roller, and the amount of cleaning liquid retained in the squeezed wool is 100% based on the dry weight of the wool.
Made it correspond to diagonal.

The wrung wool was dried in a closed hot air dryer for 4 minutes.

The resulting washed wool possesses 2.3% by weight residual soapy matter and 0.488% by weight residual fatty matter, and has satisfactory whitening, hand, and UB solubility of 59.98%. did.

The same washing operation as above was carried out, but the density of the opened wool was reduced to 0.0.
It was repeated varying within the range of 0.09 to 0.06 g/-.

FIG. 3 shows the relationship between the density of the opened wool and the content of solid inorganic impurities in the obtained washed wool.

As is evident from FIG. 3, when washing is carried out at wool densities greater than 0.04, the content of solid inorganic impurities in the resulting washed wool becomes undesirably high.

The obtained washed wool was sent to a normal top making process to produce a top.

The top quality and texture obtained were satisfactory.

(See Example 9) Comparative Example 1 9 was added to the same greasy wool 200 as described in Example 1,
Cleaning was performed using a five-tank cleaning device.

An aqueous cleaning solution containing 0.1% by weight sodium soap and 0.1% by weight sodium carbonate was added to the first. into the second and third tanks, and hot water into the fourth and fifth tanks.

Washing was carried out at a temperature of 50° C. for 12 minutes at a relative speed of wool to washing solution of 5 m/min.

The wool was opened into fiber aggregates of 0.015 g/cd in the washing equipment.

The washed wool was wrung out so that the amount of washing solution remaining in the wool was equivalent to 65 cents of the dry weight of the wool, and then dried in a closed hot air dryer at a temperature of 85° C. for 5 minutes.

The resulting washed wool contained 0.611% by weight residual fatty material and 0.700% by weight residual soapy material.

Although the hand of the washed wool was satisfactory, the whitening of the washed wool was inferior to that of Example 1, and the UB solubility was 53.50%.

Example 2 The same operation as described in Example 1 was carried out, except that the amount of wool fat in the washing solution was 0.2% and the squeezing was such that the amount of washing solution remaining in the wool was equal to the dry weight of the wool. 197
It was made to correspond to %.

The resulting washed wool contained 2.2% by weight of residual soapy substances and 0.4% by weight of residual fatty substances.

A wool top with good quality and feel was obtained. Example
3 The same procedure as described in Example 1 was carried out, except that the wool fat was contained in the washing liquid in an amount of 2.0% by weight and the squeezing rate was 54.

The resulting washed wool contained 2.5% by weight of residual soapy material and 1.4% by weight of residual fatty material.

A wool top with good quality and feel was obtained.

Examples 4-8 In each of Examples 4-8, the same operations as described in Example 1 were carried out, except that the liquid compounds shown in Table 1 were used in place of 1,1,1 trichloroethane.

Table 1 shows the properties of the obtained washed wool.

All of the obtained wool tops had good quality and feel.

Comparative Example 2 The same procedure as described in Example 1 was carried out, but without the use of wool fat.

The resulting washed wool possessed 1.80 wt φ of residual soapy material and 0.12 wt. It had a UB solubility of 0.01 yen.

Example 9 The washed sheep wool obtained as described in Example 1 was subjected to a top making process, and then the obtained top was subjected to a spinning process, in which the yarn count was 1/48'S.
A wool yarn was produced from the wool of Example 1 at a spindle speed of 11,000/min.

For comparison, a top-making process similar to that described above was applied to washed wool obtained by the method described in Comparative Examples 1 and 2.

However, the spindle rotation speed applied to the top obtained from the wool of Comparative Example 2 was 10,000/min.

The results are shown in Table 2. Example 10 The same procedure as described in Example 1 was applied to the hair of a Chinese cashmere goat containing 4.4 parts by weight of sebum, except that the washing was carried out at 20-22° C. using a two-tank washing device. In 2
This was carried out for 1 minute, and the squeezing was carried out such that the retained washing liquid corresponded to 70-90% of the weight of the hair.

The washed cashmere goat hair contained 0.91 weight residual soapy material and 0.47 weight residual fatty material.

A cashmere goat hair top with good quality and texture was obtained.

Example 11 The same procedure as described in Example 10 was applied to South African Angora goat hair containing 5.4 weight factor soft coat.

The resulting washed Angora goat hair contained 1.20 parts by weight of residual soapy material and 0.44 parts by weight of residual fatty materials.

An angora goat hair top with good texture and quality was obtained.

Example 12 The same procedure as described in Example 9 was applied to Chinese camel hair containing 4.5 wt.

The resulting washed camel hair contained 1.08 weight φ of residual soapy material and 0.51 weight φ of residual fatty material.

A frizzy top with good texture and quality was obtained.

[Brief explanation of drawings]

FIG. 1 is a flow sheet showing a preferred embodiment of the method of the present invention. FIG. 2 is a flow sheet showing another preferred embodiment of the method of the present invention. FIG. 3 is a graph showing the relationship between the bulk density of the lubricant animal hair to be washed and the solid impurity content retained in the obtained animal hair.

Claims (1)

[Scope of Claims] 1. When cleaning animal hair with a cleaning liquid, an organic solvent that cannot dissolve soapy substances and 0.1 to 20% of the oil to be cleaned, based on the total weight of the cleaning liquid, are added. Immerse the fat animal hair in the state of fibers opened to a density of 0.04 g/i or less in a cleaning solution consisting of coarse animal fat extracted from the same type of fat animal hair as the animal hair. while moving one or both of the animal hair and the cleaning solution, each at a relative speed of In/min or more relative to the other, such that the resulting cleaned animal hair has an amount of the aforementioned animal hair corresponding to 20 to 200 parts of its weight. removing the washing liquid from the washed animal hair to such an extent that it retains the washing liquid, and drying the washing liquid-retaining animal hair so that the residual amount of soapy substances in the washed animal hair material is reduced to 1 to 3 weight by weight; and a method for producing an animal hair top by controlling the residual amount of fatty homogeneous material by 0.3 to 5 weight and subjecting the washed animal hair to a top process. 2. The method of claim 1, wherein the amounts of residual soapy material and fatty material are 1.2 to 2.5 parts by weight and 0.5 to 3 parts by weight, respectively. 3. A method according to claim 1, wherein the animal hair is wool having a weight φ of 1.2 to 2.5 weight φ of residual soapy material and a weight φ of 0.3 to 5 weight φ of retained fatty material. 4. The method of claim 3, wherein the wool has 1.5 to 2.5 weights of residual soapy material and 0.3 to 3 weights of residual fatty material. 5. The animal hair is cashmere goat hair having a residual soapy substance of 1.0 to 2.5 weight and a residual fatty substance of 0.3 to 2.5 weight φ. Method described. 6. The method according to claim 1, wherein the organic solvent comprises at least one compound selected from the group consisting of liquid hydrocarbons, liquid halogenated hydrocarbons, liquid ethers, and liquid esters. 7 The liquid hydrocarbons include n-hebutane, n-hexane, isohexane, n-octane, isooctane, 2,2-dimethylbutane, petroleum ether, petroleum benzene, rig ink, petroleum spirit, petroleum naphtha, 2-pentene, 7. The method of claim 6, wherein the compound is selected from the group consisting of mixed pentenes, cyclohexane, methylcyclohexane, benzene, toluene, xylene and ethylbenzene. 8 The liquid halogenated hydrocarbons include methylene chloride, chloroform, carbon tetrachloride, ethylene chloride, ethylidene chloride,
1,1,1-trichloroethane, 11.2-trichloroethane, 1,1,1,2-tetrachloroethane, ■, 2
-dichloroethylene, trichlorethylene, tetrachlorethylene, isopropyl chloride, ethyl bromide, ethylene bromide, 12-dichloropropane, butyl chloride, amyl chloride, chlorobenzene, fluorotrichloromethane and 1,1,2-trichlor -1,2,2-trifluoroethane. 9. The method of claim 6, wherein the liquid ether is selected from the group consisting of ethyl ether, isopropyl ether, amyl phenyl ether, dioxane, methylfuran, tetrahydrofuran, and tetrahydropyran. 10 The liquid esters include methyl acetate, ethyl acetate, acetic acid n
-butyl, isopropyl acetate, n-butyl acetate, n-acetate
-butyl, nibutyl acetate, n-amyl acetate, isoamyl acetate, methylisoamyl acetate, sec-hexyl acetate, methyl propionate, ethyl propionate, butyl propionate, and ethyl butyrate. The method described in section. 11. The method of claim 6, wherein the organic solvent exhibits a boiling point in the range of 30 to 150°C.