A kind of dyeing and finishing processing method of flax short fiber

A processing method and short fiber technology, applied in the field of dyeing and finishing of flax short fiber, to achieve the effect of increasing softness and extensibility, improving quality and function, and reducing damage

CN105297419BInactive Publication Date: 2017-06-27QIQIHAR UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2017-06-27
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention discloses a dyeing and finishing method of flax staple fiber. The method uses flax staple fiber as raw material, and undergoes pretreatment-scouring, one-bath pretreatment, hot water washing, warm water washing, dehydration, dyeing, cold water washing, and soaping , Washed in cold water, dehydrated and dried. The advantage is that the pretreatment process and the scouring pretreatment process are combined into one bath treatment, the process flow is shortened, and the pretreatment uses green peracetic acid instead of traditional sulfuric acid, which reduces the damage to fiber strength. This method can well remove impurities such as lignin, pectin, and pigment, increase softness and extensibility, reduce short-lint rate, significantly improve the splitting degree and spinnability of short fibers, and improve their quality and function. After adding the rubbing fastness improving agent, the dry and wet rubbing fastness is improved by 1~2 grades, and the comprehensive performance is improved. The produced combed short hemp high-count yarn has the same long-term physical index and yarn appearance quality as the linear density. Comparable.
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Description

technical field

[0001] The invention relates to a method for dyeing and finishing flax staple fibers, belonging to the technical field of textiles. Background technique

[0002] Flax fiber has the health functions of moisture absorption, good air permeability, antiseptic and antibacterial, and it will be more comfortable as knitted underwear. Flax staple fiber is short hemp, the price is longer and hemp lower, but it has the shortcomings of fiber disorder, mutual entanglement, inconsistent physical and mechanical indicators such as extensibility and strength, and poor spinnability, so processing is limited, which affects use and development. Therefore, it is of great significance to expand new products of flax staple fiber, save resources and increase added value.

[0003] In the traditional pretreatment process of flax staple fiber, the pretreatment process and the scouring process are usually carried out separately, that is, the two-bath method. The two-bath method not o...

Examples

Embodiment 1

[0023] Using flax staple fiber as raw material, the specific process is as follows:

[0024] (1) Pretreatment - scouring one-bath pretreatment: peracetic acid 3.0g / L, sodium silicate 2.0g / L, temperature 55℃, time 45min, bath ratio 1:30; sodium carbonate 9.0g / L, silicon dioxide Sodium 2.5g / L, temperature 95℃, time 50min;

[0025] (2) Hot water washing: 85~90℃ water washing twice;

[0026] (3) Warm water wash: 45~50℃ water wash twice;

[0027] (4) Dehydration: 3 to 5 minutes;

[0028] (5) Dyeing: reactive dye KE 1.0%, rubbing fastness improving agent NEOFIX IR-77 0.08g / L, dyeing at 50°C, adding sodium chloride 20.0g / L, heating to 90°C at 1°C / min, adding Sodium carbonate 6.0g / L, heat preservation for 55min, bath ratio 1:30;

[0029] (6) Wash in cold water: wash twice with water at 20-30°C;

[0030] (7) Soap cooking: soap flakes 2.0g / L, sodium carbonate 2.0g / L, temperature 95℃, time 8min, liquor ratio 1:30;

[0031] (8) Wash in cold water: wash with water at 20~30℃ until alk...

Embodiment 2

[0035] Using flax staple fiber as raw material, the specific process is as follows:

[0036] (1) Pretreatment - scouring one-bath pretreatment: peracetic acid 3.0g / L, sodium silicate 2.5g / L, temperature 55℃, time 50min, bath ratio 1:30; sodium carbonate 9.0g / L, silicon dioxide Sodium 2.5g / L, temperature 90℃, time 50min;

[0037] (2) Hot water washing: 85~90℃ water washing twice;

[0038] (3) Warm water wash: 45~50℃ water wash twice;

[0039] (4) Dehydration: 3 to 5 minutes;

[0040] (5) Dyeing: reactive dye KE 1.5%, rubbing fastness improving agent NEOFIX IR-77 0.09g / L, dyeing at 50°C, adding sodium chloride 25.0g / L l, heating to 95°C at 1°C / min, Add sodium carbonate 7.0g / L, keep warm for 55min, and the bath ratio is 1:30;

[0041] (6) Wash in cold water: wash twice with water at 20-30°C;

[0042] (7) Soap cooking: soap flakes 2.0g / L, sodium carbonate 2.0g / L, temperature 95℃, time 8min, liquor ratio 1:30;

[0043] (8) Wash in cold water: wash with water at 20~30℃ until a...

Embodiment 3

[0047] Using flax staple fiber as raw material, the specific technological process is as follows:

[0048] (1) Pretreatment - pretreatment of scouring one bath: peracetic acid 3.5g / L, sodium silicate 2.5g / L, temperature 55℃, time 50min, bath ratio 1:30; sodium carbonate 9.5g / L, silicon dioxide Sodium 2.5g / L, temperature 90℃, time 55min;

[0049] (2) Hot water washing: 85~90℃ water washing twice;

[0050] (3) Warm water wash: 45~50℃ water wash twice;

[0051] (4) Dehydration: 3 to 5 minutes;

[0052] (5) Dyeing: reactive dye KE 1.5%, rubbing fastness improving agent NEOFIX IR-77 0.09g / L, dyeing at 50°C, adding sodium chloride 22.0g / L, heating to 90°C at 1°C / min, adding Sodium carbonate 6.5g / L, heat preservation for 55min, bath ratio 1:30;

[0053] (6) Wash in cold water: wash twice with water at 20-30°C;

[0054] (7) Soap cooking: soap flakes 2.0g / L, sodium carbonate 2.0g / L, temperature 95℃, time 8min, liquor ratio 1:30;

[0055] (8) Wash in cold water: wash with water at...