阅读说明：本技术 羊毛低温高压喷缸染色工艺 (Low-temperature high-pressure spray cylinder dyeing process for wool ) 是由 俞黎红 于 2019-10-12 设计创作，主要内容包括：本发明公开了羊毛低温高压喷缸染色工艺,包括有以下步骤：步骤一、在染缸中加水,加入助剂混合均匀,将羊毛放入染缸中浸泡处理40-50分钟；步骤二、染缸中加入染料,混合均匀,随后染缸升温至90℃,保温30-60分钟,加压至0.2-0.25MPa；步骤三、染缸卸压至常压,染缸内温度降至常温后排水,完成羊毛高压低温染色。本发明的羊毛低温高压喷缸染色工艺,利用碱性蛋白酶对羊毛进行前处理,提高羊毛触感,提高染色吸收率,提高色牢度。染色过程中加压,提高羊毛的染色渗透性,避免染色过程中高温产生气泡导致染色瑕疵,提高染色一致性。利用高温高压使得碱性蛋白酶失去活性,省去PH调酸破坏碱性蛋白酶的处理过程,节省时间,提高染色效率。(The invention discloses a low-temperature high-pressure spray vat dyeing process for wool, which comprises the following steps: step one, adding water into a dye vat, adding an auxiliary agent, uniformly mixing, and soaking wool in the dye vat for 40-50 minutes; step two, adding dye into a dye vat, uniformly mixing, then heating the dye vat to 90 ℃, preserving heat for 30-60 minutes, and pressurizing to 0.2-0.25 MPa; and step three, releasing the pressure of the dye vat to normal pressure, and draining water after the temperature in the dye vat is reduced to normal temperature to finish the high-pressure low-temperature dyeing of the wool. According to the low-temperature high-pressure jet-vat dyeing process for the wool, alkaline protease is used for pretreating the wool, so that the touch feeling of the wool is improved, the dyeing absorptivity is improved, and the color fastness is improved. Pressurization is carried out in the dyeing process, so that the dyeing permeability of wool is improved, dyeing flaws caused by bubbles generated at high temperature in the dyeing process are avoided, and the dyeing consistency is improved. The alkaline protease is inactivated by high temperature and high pressure, the treatment process that the alkaline protease is damaged by pH adjustment and acid adjustment is omitted, the time is saved, and the dyeing efficiency is improved.)

1. The low-temperature high-pressure jet vat dyeing process for wool is characterized by comprising the following steps of:

step one, adding water into a dye vat, adding an auxiliary agent, uniformly mixing, and soaking wool in the dye vat for 40-50 minutes;

step two, adding dye into a dye vat, uniformly mixing, then heating the dye vat to 90 ℃, preserving heat for 30-60 minutes, and pressurizing to 0.2-0.25 MPa;

and step three, releasing the pressure of the dye vat to normal pressure, and draining water after the temperature in the dye vat is reduced to normal temperature to finish the high-pressure low-temperature dyeing of the wool.

2. The low-temperature high-pressure spray cylinder dyeing process for wool according to claim 1, characterized in that the auxiliary agent comprises alkaline protease, pH regulator, leveling agent, dispersant, amino silicone oil and the balance of water.

3. The low-temperature high-pressure spray cylinder dyeing process for wool according to claim 2, characterized in that the auxiliary agent comprises 6-8 parts of alkaline protease, 2-3 parts of pH regulator, 5-8 parts of leveling agent, 3-5 parts of dispersing agent, 15-20 parts of amino silicone oil and 50-70 parts of water.

4. A low temperature high pressure jet vat dyeing process for wool according to claim 3 wherein the addition of said adjunct is 5-8% owf.

5. A low-temperature high-pressure jet-vat dyeing process for wool according to claim 1, characterized in that in step two, the dye vat is kept warm for 40 minutes.

6. A low temperature high pressure jet vat dyeing process for wool according to claim 1, wherein in step two the temperature rise rate of the vat is one degree per minute.

Technical Field

The invention belongs to the technical field of dyeing, and particularly relates to a low-temperature high-pressure jet cylinder dyeing process for wool.

Background

The wool fiber surface has a hydrophobic compact scale layer, which can prevent the dye from absorbing and diffusing into the wool fiber, so the wool dyeing needs to be carried out under high temperature. The dyeing temperature is 100 ℃ high, so that the diffusion rate of the dye can be improved. However, such high temperatures also cause a large amount of bubbles in the dye vat, which can lead to dyeing defects and affect the dyeing consistency.

Disclosure of Invention

In order to solve the technical problems, the invention adopts the technical scheme that: the low-temperature high-pressure spray vat dyeing process for wool comprises the following steps:

step one, adding water into a dye vat, adding an auxiliary agent, uniformly mixing, and soaking wool in the dye vat for 40-50 minutes;

step two, adding dye into a dye vat, uniformly mixing, then heating the dye vat to 90 ℃, preserving heat for 30-60 minutes, and pressurizing to 0.2-0.25 MPa;

and step three, releasing the pressure of the dye vat to normal pressure, and draining water after the temperature in the dye vat is reduced to normal temperature to finish the high-pressure low-temperature dyeing of the wool.

Preferably, the auxiliary agent comprises alkaline protease, a pH regulator, a leveling agent, a dispersing agent, amino silicone oil and the balance of water.

Preferably, the auxiliary agent comprises 6-8 parts of alkaline protease, 2-3 parts of pH regulator, 5-8 parts of leveling agent, 3-5 parts of dispersing agent, 15-20 parts of amino silicone oil and 50-70 parts of water.

Preferably, in the above technical solution, the addition amount of the auxiliary agent is 5-8% owf.

Preferably, in the second step, the dye vat is kept warm for 40 minutes.

Preferably, in the second step, the temperature rise rate of the dye vat is one degree per minute.

The invention has the beneficial effects that: according to the low-temperature high-pressure jet-vat dyeing process for the wool, alkaline protease is used for pretreating the wool, so that the touch feeling of the wool is improved, the dyeing absorptivity is improved, and the color fastness is improved. Pressurization is carried out in the dyeing process, so that the dyeing permeability of wool is improved, dyeing flaws caused by bubbles generated at high temperature in the dyeing process are avoided, and the dyeing consistency is improved. The alkaline protease is inactivated by high temperature and high pressure, the treatment process that the alkaline protease is damaged by pH adjustment and acid adjustment is omitted, the time is saved, and the dyeing efficiency is improved.

Detailed Description

The technical solutions of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.