JP2588494B2 - Method of manufacturing wool products - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND 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 dried wool yarn, and then steaming to produce a wool product. More specifically, when steaming after knitting and drying the wool yarn dyed and dried as described above, the crimp of the wool fiber returns and has a good bulky property and is soft and soft. The present invention relates to a method for producing a wool product from which a wool product with less distortion can be obtained.

[0002]

2. Description of the Related Art Conventionally, a wool yarn is dyed and then dried, and the dried wool yarn is knitted and steamed to produce a wool product. I was

[0003] Heretofore, conventionally, wool yarn is dyed at a high temperature of 100 ° C to dye the wool yarn as described above. The wool yarn was dried with hot air at a high temperature of 80 to 90 ° C.

However, when a wool product is manufactured in the conventional manner, the manufactured wool product is likely to have distortion set in an uneven shape in a cone state, and after knitting as described above, In the case of soaking, the unevenness of the yarn remained as it was, the crimp of the wool fiber was hardly restored, and a wool product with a clean stitch 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 dried wool yarn, and then steaming. It is an object of the present invention to solve the above-mentioned problem in a case.

That is, in the present invention, a wool product is manufactured by dyeing the wool yarn as described above, drying the wool yarn, knitting the dried wool yarn, and steaming. In such a case, a wool product having a soft and less distortion is obtained, and a crimp in the wool is sufficiently restored when steaming is performed, so that a wool product having a high bulky property is obtained. That is the task.

Therefore, the present inventors have found that when a wool product is manufactured in a conventional manner, the manufactured wool product is hard and easily distorted. The reason why the crimp in the fiber is small and the bulky wool product cannot be obtained was examined.

[0008] When the wool yarn is dyed as described above, the wool fiber in the wool yarn swells by absorbing moisture, the crimp of the wool fiber is expanded, and the wool fiber is dried. In the state where the crimp is bent, the cross-linked SS bond portion as shown in the following chemical formula (A) is changed into the chemical formula (B) by the crimp elongation due to swelling.
As shown in FIG.

[0009]

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When the wool yarn is dyed at a high temperature of 100 ° C. as in the prior art with the crimp stretched as described above, S in the stretched state as shown in the above chemical formula (B).
-S bonds are severely broken, and the SS thus broken
The binding moiety is reduced to a -SH group as shown in Formula (C).

When the wool yarn thus dyed is dried with hot air at a high temperature of 90 ° C. as in the prior art, the further extended portion of the SS bond is cut off. Similarly, while being reduced to -SH groups, the wool yarn also suffers more damage.

Many -SH groups generated during dyeing and drying of the wool yarn as described above are, as shown in the chemical formula (D), at a nearby position with the crimp extended. , And re-crosslink due to the formation of an SS bond, whereby the crimp in the wool fiber is immobilized in a stretched state (a so-called permanent set), and the high temperature The resulting wool product is hard and distorted easily due to the damage of the wool yarn due to hot air drying in the place, and the place where the yarn crossed in the cone state and became flat, and the place where it was not, were set permanently It is considered that the yarn becomes uneven and the return of the crimp after steaming is reduced.

[0013] The present inventors have conducted studies based on the results of such considerations to solve the above-mentioned problems, 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-mentioned problems, after dyeing a wool yarn, the wool yarn is treated with a weak oxidizing agent. The wool yarn was subjected to an oxidation treatment, and then an aminosilicon-based softening agent was applied to the wool yarn. Then, the wool yarn was subjected to high frequency drying at a low temperature and a low pressure of 75 ° C. or less, and the wool yarn thus dried was knitted. Later, they began steaming to produce wool products.

Further, in the second method for producing wool products according to the present invention, in order to solve the above problems,
After dyeing the wool yarn at a temperature of 90 ° C. or less at a low temperature, an aminosilicone softener is applied to the wool yarn, and then the wool yarn is dried at a low temperature of 75 ° C. or less under a low pressure under a high frequency,
The knitted wool yarn thus dried is steamed to produce a wool product.

In the first method for producing a wool product, the wool yarn is oxidized after the wool yarn is dyed, because the wool yarn is oxidized. 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 As shown in the above formula (D), the remaining --SH group is bonded to another nearby --SH group while the crimp is still extended, and the S--H group is bound to form the S--H group. This is because the crimps of the wool fibers are immobilized in a stretched state by the occurrence of -S bonds and the re-crosslinking by the S-S bonds.

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

In the second method for producing a wool product, the wool yarn is dyed at a low temperature of 90 ° C. or lower because the SS bond in the wool fiber when the wool yarn is dyed. In order to reduce the ratio of cleaved and reduced to -SH groups.
Dye at a low temperature of 5 ° C.

In the first and second methods for producing wool products, the aminosilicone softening agent is applied to the wool yarn because the wool yarn has flexibility and flexibility. This is in order to obtain a wool product.

Then, after the aminosilicone softening agent is applied to the wool yarn, the wool yarn is dried at a low temperature of 75 ° C. or less and at a low pressure by high frequency drying. When dried under low pressure, the wool yarn is cut at a reduced rate to the -SH group by reducing the S--S bond in the wool fiber and the wool yarn as compared with the case where the wool yarn is dried with hot air at a temperature of about 90C. In addition, when high frequency drying is performed under these conditions, the aminosilicone softener applied to the wool yarn does not undergo steam distillation, and the aminosilicon softener is applied to the wool yarn. The drying is preferably performed at a low temperature of 65 ° C. or less and under a low pressure.

[0021]

When the wool yarn is dyed and then oxidized with a weak oxidizing agent as in the first method for producing wool products according to the present invention, the wool yarn is present in the wool fiber after dyeing. SH groups are to be modified to -SO ₃ H groups being oxidized.

And, as described above, the -S
In a state where the H group is oxidized to the -SO ₃ H group, the wool amino silicon-based softener was applied to the yarn, then cold thus wool yarn granted amino silicon softener 75 ° C. or less And when high-frequency drying under low pressure, during the drying, the SS bond in the wool fiber is newly broken-
It is unlikely that SH groups are generated or the wool yarn is damaged, and the aminosilicone softening agent is maintained in a state of being applied to the wool yarn. There is no re-crosslinking of the moiety modified to the ₃ H group.

Therefore, in the first method for producing a wool product of the present invention, the conventional method for producing wool fiber
The -S bond is cleaved and reduced to -SH groups, and the thus-reduced -SH groups are re-crosslinked in a state where the crimp of the wool fiber is extended, and set in a state where the wool fiber is extended. With less, the damage in the wool yarn also decreases, and when steaming after knitting this wool yarn, the crimp in the wool fiber is fully restored, and high bulky properties are obtained, The aminosilicone softener is maintained in the wool yarn, and a wool product that is soft and has less distortion can be obtained.

Further, when the wool yarn is dyed at a temperature of 90 ° C. or less at a low temperature as in the second method for producing a wool product according to the present invention, the SS bond in the wool fiber is cut at the time of dyeing. SH groups are rarely generated,
The wool yarn is dyed with a large amount of -S bonds remaining.

An aminosilicone softening agent is applied to the dyed wool yarn with a large amount of SS bonds remaining, and then the wool yarn is subjected to high-frequency drying at a low temperature of 75 ° C. or less and at a low pressure. Then, as in the case of the first method for producing a wool product, it is unlikely that the SS bond in the wool fiber is newly cut to generate a -SH group or the wool yarn is damaged, In addition, the aminosilicone softener will be maintained in a state applied to the wool yarn,
After knitting this wool yarn and steaming,
The crimp in the wool fiber is sufficiently restored, so that high bulkiness can be obtained, and a wool product that is soft and has little distortion can be obtained by the aminosilicone softener maintained in the wool yarn.

[0026]

EXAMPLES Hereinafter, examples of the present invention will be specifically described, and comparative examples will be given. The wool products manufactured in the examples of the present invention are superior to the wool products manufactured in the comparative examples. To reveal.

(Example 1) In this example, a # 48 double yarn was used as a wool yarn, and a chromium dye (CI Black 7) was allowed to act on the wool yarn by 4.5% owf at 85 ° C. At 30 ° C. for 30 minutes, followed by 0.68% of potassium dichromate solution,
The dyeing was continued at 40 ° C. for 40 minutes, and the wool yarn was dyed black.

After the wool yarn is dyed at a low temperature in this manner, a 2% percarbonate solution is added thereto, and the wool yarn is oxidized at 60 ° C. for 20 minutes. Using an agent (Nikko Softener CW manufactured by Nikko Giken Co., Ltd.) at 40 ° C. for 10 minutes, 2.4% owf of the aminosilicone softener was applied to the wool yarn.

Next, the wool yarn to which the aminosilicone-based softening agent is applied is dehydrated as described above, and the wool yarn is dried at a low temperature of 60 ° C. and a low pressure using a vacuum type high frequency dryer.
It was high frequency dried for 0 minutes.

Then, the thus dried wool yarn is knitted by a knitting machine to a cover factor of 0.41, and then steamed with steam of 0.5 kg / m ² for 3 minutes by a Hoffman press. 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 Example 1 above, the step of oxidizing the dyed wool yarn with percarbonate was omitted. Except for the above, a wool product was produced in the same manner as in Example 1 above.

Example 3 In this example, when wool yarn was dyed with the above chromium dye (CI Black 7), the wool yarn was dyed at a high temperature of 100 ° C. for 30 minutes. The dyeing was continued at 100 ° C. for 30 minutes even after the addition of the potassium dichromate solution, so that the wool yarn was dyed black.

After the wool yarn has been 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. Wool products were manufactured.

Comparative Example 1 In this comparative example, a wool yarn was dyed at a low temperature in the same manner as in Example 1 and oxidized with percarbonate, and the wool yarn was dried using a hot air drier. High temperature dried 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 Example 3 and then oxidized by percarbonate in Example 3 above. The treatment was not performed, and thereafter, a wool product was manufactured in the same manner as in Example 3 above.

Comparative Example 3 In this comparative example, the wool yarn was dyed at a high temperature of 100 ° C. in the same manner as in Example 3 and the wool yarn thus dyed at a high temperature was treated with percarbonate. Oxidation treatment was performed.

Then, the wool yarn thus oxidized is dried at a high temperature of 90 ° C. for 60 minutes using a hot air drier, and thereafter, a wool product is produced in the same manner as in 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 thus dyed was oxidized. Processing was not performed.

In drying the wool yarn dyed at a high temperature as described above, a hot air drier is used at 90 ° C.
At a high temperature for 60 minutes, and thereafter, a wool product was produced in the same manner as in Example 3 above.

Next, Example 1 manufactured as described above was used.
Stiffness B (gfcm ² / cm) and hysteresis 2HB in bending deformation characteristics of each wool product of Comparative Examples 1-4 and Comparative Examples 1-4 based on the Kawabata Hand Test (KES).
(Gfcm ² / cm) and the elastic recovery RC (%) in the compression deformation characteristics were determined, and the results are shown in Table 1 below.

The larger the value of the above-mentioned bending stiffness B is, the harder it is, the larger the value of the hysteresis 2HB is, the more the distortion tends to remain, and the larger the value of the elastic recovery RC is, the larger the return of the crimp is. The nature becomes high.

[0042]

[Table 1]

As a result, each of the wool products obtained in Examples 1 to 3 has smaller values of the flexural rigidity B and the hysteresis 2HB than those of the wool products obtained in Comparative Examples 1 to 4. The wool product of Examples 1 to 3 is higher than the wool products of Comparative Examples 1 to 4, and has excellent bulky property. A wool product was obtained.

When the wool products of Examples 1 to 3 are examined, the wool yarn is dyed at a low temperature, then the wool yarn is subjected to an oxidation treatment, and the wool yarn is dried at a low temperature. Wool products were the best in terms of bulkiness and the like.

[0045]

As described above in detail, in the first method for producing a wool product according to the present invention, after dyeing the wool yarn, the wool yarn is oxidized using a weak oxidizing agent, After the aminosilicone softener is applied to the wool yarn, the wool yarn is dried at a low temperature and a low pressure of 75 ° C. or less under a high frequency, and the dried wool yarn is knitted. 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 unlikely that the bond is broken to generate an -SH group or the wool yarn is damaged, and the aminosilicone-based softener is maintained in a state applied to the wool yarn. -SO There is no re-crosslinking of the moiety modified to the ₃ H group.

As a result, when a wool product is manufactured by the first method for manufacturing a wool product according to the present invention, the SS bond in the wool fiber is cleaved and reduced to -SH groups, as in the prior art. The -SH group reduced to the above is re-crosslinked in a state where the crimp of the wool fiber is elongated, and it is less likely that the wool fiber is set in a state where the wool fiber is elongated, and the damage in the wool yarn is reduced. When steaming after knitting, the crimp in the wool fiber is fully restored, high bulkiness is obtained, and the aminosilicone softener maintained on the wool yarn is soft and has little distortion. Wool products are now available.

Further, in the second method for producing a wool product according to the present invention, the wool yarn is dyed at a low temperature of 90 ° C. or less, and then the wool yarn is provided with an aminosilicone softening agent. The yarn was subjected to high-frequency drying at a low temperature and low pressure of 75 ° C. or less, and after knitting the wool yarn thus dried, steaming was performed to produce a wool product. It is unlikely that the SS bond in the wool fiber is cut to generate -SH groups, and the wool yarn is dyed with a large amount of the SS bond remaining, and when the wool yarn is dried. In addition, the SS bond in the wool fiber is newly broken-
The occurrence of SH groups and the damage to wool yarn are rare, and the aminosilicone softener is maintained in a state applied to the wool yarn.

As a result, when the wool product is manufactured by the second method for manufacturing a wool product according to the present invention, similarly to the case where the wool product is manufactured by the first method for manufacturing a wool product, the wool product is manufactured. When the yarn is knitted and then steamed, the crimp in the wool fiber is fully restored, high bulkiness is obtained, and the amino silicon softener maintained in the wool yarn is soft and distorted. Fewer wool products are now available.

Continuation of the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical display location // D06M 101: 10 D06M 3/06

Claims (2)

(57) [Claims] After wool yarn is dyed, the wool yarn is oxidized with a weak oxidizing agent, and then the wool yarn is treated with an aminosilicon-based softening agent. A method for producing wool products, characterized in that high-frequency drying is performed at a low temperature and a low pressure, and the wool yarn thus dried is knitted and then steamed. 2. After wool yarn is dyed at a low temperature of 90 ° C. or lower, an amino silicone softening agent is applied to the wool yarn.
Thereafter, the wool yarn is subjected to high-frequency drying at a low temperature and a low pressure of 75 ° C. or less, and the dried wool yarn is knitted and then steamed to produce a wool product.