JPH05295659A - Production of wool product - Google Patents

Abstract

PURPOSE:To obtain a soft wool product reduced in strain and having high bulkiness by dyeing a wool yarn, drying the dyed wool yarn, knitting the wool yarn and then steaming the knitted product. CONSTITUTION:A wool yarn is dyed and then subjected to oxidation treatment with a weak oxidizing agent or the wool yarn is subjected to low-temperature dyeing at <=90 deg.C and then an aminosilicone based softening agent is applied to the wool yarn and the treated wool yarn is subjected to high-frequency drying at a low temperature of <=75 deg.C under low pressure and the wool yarn thus dried is knitted and then steamed to produce the objective wool product.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wool product for producing a wool product by dyeing a wool yarn, drying the wool yarn, knitting the thus dried wool yarn, and steaming to produce a wool product. In more detail, the wool fiber crimps are restored when the steaming is performed after knitting the wool yarn dyed and dried as described above, and the bulky property is good and soft. The present invention relates to a method for producing a wool product, which enables a wool product with less distortion to be obtained.

[0002]

2. Description of the Related Art Conventionally, a wool product is manufactured by dyeing a wool yarn, drying the wool yarn, knitting the thus dried wool yarn, and steaming. Was there.

Here, conventionally, in dyeing the wool yarn as described above, the wool yarn is generally dyed at a high temperature of 100 ° C., and the wool yarn thus dyed is dried. The wool yarn was dried with hot air at a high temperature of 80 to 90 ° C.

However, in the case of producing a wool product in the conventional manner, the produced wool product is likely to have distortions set in an uneven shape in a cone state, and after knitting as described above, When the fabric was warmed, the irregularities of the yarn remained as it was, and the crimps in the wool fiber were not recovered so much that a wool product having fine stitches and high bulkiness could not be obtained.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a wool product is manufactured by dyeing a wool yarn, drying the wool yarn, knitting the thus dried wool yarn, and steaming. It is an object to solve the above problems in some cases.

That is, according to the present invention, after the wool yarn is dyed as described above, the wool yarn is dried, and the dried wool yarn is knitted and steamed to produce a wool product. In such a case, a soft and less distorted wool product can be obtained, and when steamed, the crimp in the wool can be sufficiently restored, and a wool product with high bulkiness can be obtained. This is an issue.

Therefore, the present inventors have found that when a wool product is manufactured in the conventional manner, the manufactured wool product is hard and easily distorted, and when it is warmed after knitting, it is wool. The reason why the wool products with high bulkiness were not obtained due to less recovery of crimp in the fiber was examined.

Here, when the wool yarn is dyed as described above, the wool fiber in the wool yarn absorbs water and swells, the crimp of the wool fiber is in an expanded state, and the wool fiber is dried. In the state where the crimp is bent, the crosslinked SS bond portion as shown in (A) of the following chemical formula 1 is converted into the (C) of the chemical formula 1 by the elongation of the crimp due to swelling.
It will be stretched as shown in.

[0009]

[Chemical 1]

When the wool yarn is dyed at a high temperature of 100 ° C. in the conventional state where the crimp is stretched as described above, S is in the stretched state as shown in (B) of Chemical Formula 1 above.
Many —S bonds are cleaved, and thus S—S cleaved
The binding moiety is reduced to the -SH group as shown in (C) of Chemical formula 1.

When the wool yarn dyed in this manner is dried with hot air at a high temperature of 90 ° C. as in the conventional case, the S—S bond portion in the further stretched state is cut. Similarly, it becomes reduced to -SH group, and the damage on the wool yarn also increases.

[0012] As shown in (D) of Chemical formula 1, many --SH groups generated during the dyeing or drying of the wool yarn as described above are located at a close position in a state where the crimp is stretched. Is bonded to another --SH group, and an S--S bond is generated to re-crosslink, and by this re-crosslinking, the crimp in the wool fiber is fixed in a stretched state (so-called permanent set), and at the above high temperature. Due to the damage of the wool yarn caused by drying with hot air in, the obtained wool product is hard and tends to remain distorted, and the yarn is cross-shaped and flat in the cone state, and the other places are permanently set as it is. It is considered that the yarn becomes uneven and the recovery of crimp when steaming is reduced.

Then, the inventors of the present invention have completed studies to solve the above problems based on the results of such consideration, and have completed the present invention.

[0014]

In the first method for producing a wool product according to the present invention, in order to solve the above problems, the wool yarn is dyed and then the wool yarn is used with a weak oxidizing agent. Then, the wool yarn was applied with an aminosilicone-based softening agent, and then the wool yarn was subjected to high-frequency drying at a low temperature of 75 ° C. or less and under a low pressure, and the thus dried wool yarn was knitted. Later he steamed to produce wool products.

Further, in the second method for manufacturing a wool product according to the present invention, in order to solve the above problems,
After low-temperature dyeing the wool yarn at a temperature of 90 ° C. or lower, an aminosilicone softening agent is applied to the wool yarn, and then the wool yarn is subjected to high frequency drying at a low temperature of 75 ° C. or lower and a low pressure,
The dried wool yarn was knitted and then steamed to produce a wool product.

Here, in the above-mentioned first method for producing a wool product, after the wool yarn is dyed, the wool yarn is subjected to an oxidation treatment by oxidizing the wool yarn. Although -SH group (cysteine) is cause altered to be oxidized -SO ₃ H group (cysteic acid) in, the oxidation treatment wool yarn before dyeing, -SH groups newly generated is oxidized by staining The --SH group thus left remains bound to another --SH group at a nearby position with the crimp extended as shown in (D) of the above chemical formula 1. This is because the -S bond is generated, and the crimp of the wool fiber is fixed in the stretched state by the S-S bond and the re-crosslinking.

Further, in oxidizing the wool yarn dyed in this way, a weak oxidizing agent is used.
When the wool yarn dyed with a strong oxidant is subjected to an oxidation treatment, the dye is decomposed by this strong oxidant, or even the S—S bond in the wool fiber is cleaved to be oxidized to a —SO ₃ H group. This is because the fibers are damaged and the wool yarn becomes weak. As the weak oxidizing agent for oxidizing the wool yarn dyed as described above, peroxides such as hydrogen peroxide, perboric acid, percarbonate and potassium bromate are usually used.

In the second method for producing a wool product, the wool yarn is dyed at a low temperature at a temperature of 90 ° C. or lower because when the wool yarn is dyed, the S--S bond in the wool fiber is used. This is to reduce the rate at which is cleaved and reduced to -SH groups.
Try to dye at a low temperature of 5 ° C.

In the above-mentioned first and second methods for producing a wool product, the wool yarn is provided with the aminosilicone softening agent because it gives the wool yarn flexibility. This is so that a wool product can be obtained.

Then, after the aminosilicone-based softening agent is applied to the wool yarn in this manner, the wool yarn is dried at a low temperature of 75 ° C. or lower and a high frequency under a low pressure. When dried under a low pressure, the proportion of the S—S bond in the wool fiber cleaved and reduced to —SH groups is reduced as compared with the case where the wool yarn is dried with hot air at a temperature of about 90 ° C., and the wool yarn is reduced. The damage and the like on the wool yarn are also reduced, and further, under high-frequency drying under such conditions, the aminosilicone softening agent applied to the wool yarn is not steam-distilled, and the aminosilicone softening agent is applied to the wool yarn. In order to maintain the above condition, it is preferable to perform high frequency drying at a low temperature of 65 ° C. or less and a low pressure.

[0021]

As in the first method for producing a wool product according to the present invention, when the wool yarn is dyed and then the wool yarn is oxidized with a weak oxidizing agent, it is present in the wool fiber after dyeing. The SH group is oxidized to be modified into a —SO ₃ H group.

And thus, -S in the wool fiber
An aminosilicone-based softening agent is applied to the wool yarn in a state where the H group is oxidized to —SO ₃ H group, and then the woolen yarn thus added with the aminosilicone-based softening agent is treated at a low temperature of 75 ° C. or lower. Moreover, if the material is dried at a high frequency under a low pressure, the S--S bond in the wool fiber is newly cut during the drying--
It is less likely that SH groups will be generated or the wool yarn will be damaged, and the above aminosilicone softening agent can be maintained in a state of being applied to the wool yarn. _The portion modified to the ₃ H group does not re-crosslink.

Therefore, in the first method for manufacturing a wool product according to the present invention, as in the conventional method, S in wool fiber is used.
-S bond is cleaved and reduced to -SH group, and the thus reduced -SH group is re-crosslinked in a state where the crimp of the wool fiber is stretched, and the wool fiber is set in the stretched state. With less, less damage to the wool yarn, when steamed after knitting this wool yarn, crimps in the wool fibers are sufficiently restored, and high bulkiness can be obtained, and The above aminosilicone-based softening agent is maintained in the wool yarn, so that a soft and less distorted wool product can be obtained.

When the wool yarn is dyed at a low temperature of 90 ° C. or lower as in the second method for producing a wool product in the present invention, the S—S bond in the wool fiber is cut during the dyeing— The occurrence of SH groups is rare, and S
The wool yarn becomes dyed with a large amount of -S bonds remaining.

Then, an aminosilicone-based softening agent is applied to the wool yarn dyed in such a state where a large amount of S—S bonds remain, and then the wool yarn is dried at a low temperature of 75 ° C. or lower at a low pressure and a high frequency. Then, similar to the case of the first method for producing a wool product, it is less likely that the S—S bond in the wool fiber is newly cleaved to generate —SH group, or the wool yarn is damaged, In addition, aminosilicone softener will be maintained in the state of being applied to wool yarn,
When steaming after knitting this wool yarn,
The crimp in the wool fiber is sufficiently restored to obtain high bulkiness, and the aminosilicone-based softening agent retained in the wool yarn makes it possible to obtain a soft and less distorted wool product.

[0026]

EXAMPLES Examples of the present invention will be specifically described below, and comparative examples will be given. The wool products produced in the examples of the present invention are superior to the wool products produced in the comparative examples. To clarify.

(Example 1) In this example, No. 48 double yarn was used as a wool yarn, and a chrome dye (CI Black 7) was caused to act on the wool yarn by 4.5% owf to 85 ° C. Low temperature dyeing is carried out for 30 minutes at the above temperature, then 0.68% of potassium dichromate solution is continuously added, and further 90%
Dyeing was continued for 40 minutes at a temperature of ° C to dye the wool yarn black.

Then, after the wool yarn is dyed at a low temperature in this way, 2% of a percarbonate solution is added, the wool yarn is oxidized at 60 ° C. for 20 minutes, and the wool yarn is further subjected to aminosilicone softening. It was treated with an agent (Nikko Softener CW, manufactured by Nikko Giken Co., Ltd.) at 40 ° C. for 10 minutes to give 2.4% owf of the aminosilicone softening agent to the wool yarn.

Then, after the wool yarn to which the aminosilicone-based softening agent has been applied as described above is dehydrated, the wool yarn is dried at a low temperature of 60 ° C. and a low pressure by using a vacuum type high frequency drier.
High frequency drying was performed for 0 minutes.

Then, after the wool yarn thus dried is knitted with a knitting machine to a cover factor of 0.41, steaming is performed with a steam of 0.5 kg / m ² for 3 minutes with a Hoffman press, and thereafter, This was suction-cooled to produce a wool product.

(Example 2) In this example, after the wool yarn was dyed in the same manner as in the above-mentioned Example 1, the step of oxidizing the wool yarn dyed in this way with percarbonate was omitted. A wool product was produced in the same manner as in Example 1 except for the above.

(Example 3) In this example, when the wool yarn is dyed with the above chromium dye (CI Black 7), the wool yarn is hot dyed at a temperature of 100 ° C for 30 minutes. After the addition of the potassium dichromate solution, dyeing was continued at 100 ° C. for 30 minutes to dye the wool yarn in black.

After the wool yarn is dyed at a high temperature in this manner, the wool yarn is oxidized with perboric acid in the same manner as in Example 1 above, and thereafter, in the same manner as in Example 1 above. A wool product was manufactured.

(Comparative Example 1) In this comparative example, a wool yarn was dyed at a low temperature in the same manner as in the above-mentioned Example 1 and further subjected to oxidation treatment with percarbonate, and then this wool yarn was dried with a hot air dryer. High temperature drying at a temperature of 90 ° C for 60 minutes,
Thereafter, a wool product was manufactured in the same manner as in Example 1 above.

Comparative Example 2 In Comparative Example 2, the wool yarn was dyed at a high temperature of 100 ° C. in the same manner as in the above-mentioned Example 3, and then the wool yarn was oxidized by percarbonation in the above-mentioned Example 3. No treatment was carried out, and then a wool product was produced in the same manner as in Example 3 above.

(Comparative Example 3) In this Comparative Example, the wool yarn was hot dyed at a temperature of 100 ° C in the same manner as in Example 3 above, and the wool yarn thus hot dyed was percarbonated. Oxidized.

Then, the wool yarn thus oxidized is dried at a high temperature of 90 ° C. for 60 minutes using a hot air dryer, and then a wool product is produced in the same manner as in the case of Example 3 above. did.

Comparative Example 4 In this Comparative Example, the wool yarn was dyed at a high temperature of 100 ° C. in the same manner as in Example 3 above, and then the wool yarn dyed in this way was oxidized. I decided not to process it.

When the wool yarn dyed at high temperature as described above is dried, it is heated at 90 ° C. using a hot air dryer.
Was dried at a high temperature of 60 minutes, and then a wool product was manufactured in the same manner as in Example 3 above.

Next, Example 1 manufactured as described above
For to 3 and each wool products of Comparative Examples 1 to 4, based on the Kawabata Shikifugo test method (KES), bending stiffness in bending deformation characteristic B (gfcm ² / cm), the hysteresis 2HB
(Gfcm ² / cm) and elastic recovery RC (%) in compression deformation characteristics were determined, and the results are shown in Table 1 below.

The larger the flexural rigidity B is, the harder it is, and the larger the hysteresis 2HB is, the more the strain tends to remain. The larger the elastic recovery RC is, the larger the crimp recovery is and the bulkier the bulkiness is. Will be more likely.

[0042]

[Table 1]

As a result, the wool products obtained in Examples 1 to 3 have smaller flexural rigidity B and hysteresis 2HB than the wool products obtained in Comparative Examples 1 to 4, The wool products of the above-mentioned Examples 1 to 3 are higher in softness and less likely to have residual distortion and are higher than the wool products of Comparative Examples 1 to 4, and are excellent in bulkiness. A wool product was obtained.

Examining each of the wool products of Examples 1 to 3, the wool yarn was dyed at a low temperature, the wool yarn was then subjected to an oxidation treatment, and the wool yarn was dried at a low temperature. Wool products were the best in terms of bulkiness.

[0045]

As described in detail above, in the first method for producing a wool product according to the present invention, after dyeing the wool yarn, the wool yarn is oxidized with a weak oxidizing agent, and then, After applying the aminosilicone softening agent to the wool yarn, the wool yarn is subjected to high frequency drying at a low temperature of 75 ° C. or lower and under a low pressure, and the wool yarn thus dried is knitted and steamed to obtain wool. due to so as to produce a product, -SH groups in wool fibers by oxidation treatment described above is modified to -SO ₃ H groups being oxidized and S-S when drying the wool yarn, the new wool fibers It is less likely that the bond will be cleaved to generate --SH groups and the wool yarn will not be damaged, and the aminosilicone softening agent will be maintained in the state of being attached to the wool yarn. To-SO _The portion modified to the ₃ H group does not re-crosslink.

As a result, when the wool product is manufactured by the first method for manufacturing a wool product according to the present invention, the S—S bond in the wool fiber is cleaved and reduced to —SH group as in the conventional case. The --SH group reduced to ## STR3 ## is less likely to be re-crosslinked in the stretched state of the crimp of the wool fiber and set in the stretched state of the wool fiber, and the damage to the wool yarn is also reduced. When steamed after knitting, the crimp in the wool fiber is fully restored, and high bulkiness can be obtained, and the softness and less distortion due to the aminosilicone softener retained in the wool yarn Wool products are now available.

In the second method for producing a wool product according to the present invention, the wool yarn is low-temperature dyed at a temperature of 90 ° C. or lower, and then the amino yarn softener is added to the wool yarn, and then the wool yarn is added. The yarn is subjected to high frequency drying at a low temperature of 75 ° C. or less and under a low pressure, and after knitting the dried wool yarn, steaming is performed to produce a wool product. Therefore, when dyeing the wool yarn, It is unlikely that the S—S bond in the wool fiber is cleaved to generate a —SH group, and the wool yarn becomes dyed with a large amount of the S—S bond remaining, and when the wool yarn is dried. , The S-S bond in the wool fiber is newly cleaved-
It is less likely that SH groups will be generated or the wool yarn will be damaged, and the aminosilicone-based softener can be maintained in a state of being applied to the wool yarn.

As a result, even when a wool product is manufactured by the second method for manufacturing a wool product according to the present invention, this wool is manufactured in the same manner as when the wool product is manufactured by the above-mentioned first method for manufacturing a wool product. When the yarn is knitted and steamed, the crimp in the wool fiber is fully restored, and high bulkiness can be obtained, and the aminosilicone softener retained in the wool yarn softens and distorts the yarn. Fewer wool products are now available.

Continuation of front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location D06M 15/643 D06P 5/08 DBF Z 9160-4H // D06M 101: 10

Claims (2)

[Claims] 1. After dyeing the wool yarn, the wool yarn is subjected to an oxidation treatment with a weak oxidizing agent, and then the wool yarn is given an aminosilicone-based softening agent, and the wool yarn is heated to 75 ° C. or lower. A method for producing a wool product, which comprises high-frequency drying at low temperature and low pressure, knitting the thus dried wool yarn, and steaming. 2. A wool yarn is low-temperature dyed at a temperature of 90 ° C. or lower, and an aminosilicone softening agent is added to the wool yarn,
Then, the wool yarn is subjected to high-frequency drying at a low temperature of 75 ° C. or lower and under a low pressure, and the dried wool yarn is knitted and steamed, and then a method for producing a wool product.