Preparation method of flat viscose filament yarns and spinning nozzle used in preparation process

Abstract

The invention relates to the field of viscose, in particular to a preparation method of flat viscose filament yarns and a spinning nozzle used in the preparation process. The production method comprises a process for preparing a spinning original solution, a spinning process, a post-treatment process and a post-processing process. The invention also relates to application of the flat viscose filament yarns to preparation of cleaning cloth, and the spinning nozzle used in the preparation method. The flat viscose filament yarns provided by the invention are widely applied and can be used for preparing the cleaning cloth; the cleaning effect of the cleaning cloth can be well matched with that of cleaning cloth prepared from superfine chemical fiber, and the cleaning cloth is susceptible to moisture absorption and quick drying; the cleaning cloth is easy to clean, has good hand feel and special gloss, is insusceptible to bacterial breeding, and can meet the requirements of people on high-grade furniture supplies.

Description

technical field

[0001] The invention relates to the field of viscose fibers, and in particular, relates to a method for preparing flat viscose filaments and a spinneret used in the preparation process. Background technique

[0002] Viscose fiber is a major variety of man-made fibers. Alkaline cellulose is made from natural cellulose by alkalization, and then reacted with carbon disulfide to generate cellulose xanthate, and the viscous solution obtained by dissolving in dilute lye is called viscose. Viscose is wet-spun and a series of After the treatment process, it becomes viscose fiber. It is divided into viscose filament and viscose staple fiber.

[0003] Viscose fiber is a regenerated cellulose fiber. It is made of natural cellulose as raw material, soluble cellulose xanthate is made through alkalization, aging, sulfonation and other processes, and then dissolved in dilute lye to make viscose, which is made by wet spinning. Using different raw materials and spinning p...

Examples

Embodiment 1

[0035] A method for preparing flat viscose filaments, comprising the steps of preparing spinning dope, spinning, post-processing and post-processing, specifically comprising the following steps:

[0036] 1. Preparation of alkali cellulose: alkali cellulose is obtained by impregnating pulp raw materials with NaOH solution; flat viscose filaments are made of wood and bamboo pulp with a weight ratio of 1:1; when impregnating, add impregnating agent LV -3, the addition is 0.01wt% of the content of p-methyl cellulose;

[0037] 2. Preparation of spinning stock solution: aging and yellowing alkali cellulose, filtering, defoaming, and aging to obtain spinning stock solution. The alkali content in the spinning stock solution is 5.85wt%; the spinning The composition of the stock solution is: the content of methylcellulose is 8.1wt%, the viscosity is 36 seconds, and the maturity is 8ml;

[0038] 3. Prepare spinning bath: the composition of spinning bath is: H 2 SO 4 : 120g / L, Na 2 SO...

Embodiment 2

[0046] A method for preparing flat viscose filaments, comprising the steps of preparing spinning dope, spinning, post-processing and post-processing, specifically comprising the following steps:

[0047] 1. Preparation of alkali cellulose: the pulp raw material is soaked and alkalized with NaOH solution to obtain alkali cellulose; the flat viscose filament is made of wood and bamboo pulp with a weight ratio of 1:2; the impregnation aid LV is added during impregnation -3, the addition amount is 0.08wt% of the p-methylcellulose content.

[0048] 2. Preparation of spinning stock solution: aging and yellowing alkali cellulose, filtering, defoaming, and aging to obtain spinning stock solution. The alkali content in the spinning stock solution is 6.15wt%; the spinning The composition of the stock solution is: the content of methylcellulose is 8.8wt%, the viscosity is 45 seconds, and the maturity is 9ml;

[0049] 3. Prepare spinning bath: the composition of spinning bath is: H 2 SO...

Embodiment 3

[0057] A method for preparing flat viscose filaments, comprising the steps of preparing spinning dope, spinning, post-processing and post-processing, specifically comprising the following steps:

[0058] 1. Preparation of alkali cellulose: soak and alkalinize pulp raw materials with NaOH solution to obtain alkali cellulose; flat viscose filaments are made of wood and bamboo pulp with a weight ratio of 1:3; add impregnation aid LV during impregnation -3, the addition is 0.04wt% of the content of p-methyl cellulose;

[0059] 2. Preparation of spinning stock solution: aging and yellowing alkali cellulose, filtering, defoaming, and aging to obtain spinning stock solution. The alkali content in the spinning stock solution is 5.95wt%; the spinning The composition of stock solution is: methyl fiber content: 8.4wt%; viscosity: 41 seconds; maturity: 10ml;

[0060] 3. Prepare spinning bath: the composition of spinning bath is: H 2 SO 4 : 130g / L, Na 2 SO 4 : 275g / L, ZnSO 4 : 11g / L ...

technical field

[0001] The invention relates to the field of viscose fibers, and in particular, relates to a method for preparing flat viscose filaments and a spinneret used in the preparation process. Background technique

[0002] Viscose fiber is a major variety of man-made fibers. Alkaline cellulose is made from natural cellulose by alkalization, and then reacted with carbon disulfide to generate cellulose xanthate, and the viscous solution obtained by dissolving in dilute lye is called viscose. Viscose is wet-spun and a series of After the treatment process, it becomes viscose fiber. It is divided into viscose filament and viscose staple fiber.

[0003] Viscose fiber is a regenerated cellulose fiber. It is made of natural cellulose as raw material, soluble cellulose xanthate is made through alkalization, aging, sulfonation and other processes, and then dissolved in dilute lye to make viscose, which is made by wet spinning. Using different raw materials and spinning p...

Examples

Embodiment 1

[0035] A method for preparing flat viscose filaments, comprising the steps of preparing spinning dope, spinning, post-processing and post-processing, specifically comprising the following steps:

[0036] 1. Preparation of alkali cellulose: alkali cellulose is obtained by impregnating pulp raw materials with NaOH solution; flat viscose filaments are made of wood and bamboo pulp with a weight ratio of 1:1; when impregnating, add impregnating agent LV -3, the addition is 0.01wt% of the content of p-methyl cellulose;

[0037] 2. Preparation of spinning stock solution: aging and yellowing alkali cellulose, filtering, defoaming, and aging to obtain spinning stock solution. The alkali content in the spinning stock solution is 5.85wt%; the spinning The composition of the stock solution is: the content of methylcellulose is 8.1wt%, the viscosity is 36 seconds, and the maturity is 8ml;

[0038] 3. Prepare spinning bath: the composition of spinning bath is: H 2 SO 4 : 120g / L, Na 2 SO...

Embodiment 2

[0046] A method for preparing flat viscose filaments, comprising the steps of preparing spinning dope, spinning, post-processing and post-processing, specifically comprising the following steps:

[0047] 1. Preparation of alkali cellulose: the pulp raw material is soaked and alkalized with NaOH solution to obtain alkali cellulose; the flat viscose filament is made of wood and bamboo pulp with a weight ratio of 1:2; the impregnation aid LV is added during impregnation -3, the addition amount is 0.08wt% of the p-methylcellulose content.

[0048] 2. Preparation of spinning stock solution: aging and yellowing alkali cellulose, filtering, defoaming, and aging to obtain spinning stock solution. The alkali content in the spinning stock solution is 6.15wt%; the spinning The composition of the stock solution is: the content of methylcellulose is 8.8wt%, the viscosity is 45 seconds, and the maturity is 9ml;

[0049] 3. Prepare spinning bath: the composition of spinning bath is: H 2 SO...

Embodiment 3

[0057] A method for preparing flat viscose filaments, comprising the steps of preparing spinning dope, spinning, post-processing and post-processing, specifically comprising the following steps:

[0058] 1. Preparation of alkali cellulose: soak and alkalinize pulp raw materials with NaOH solution to obtain alkali cellulose; flat viscose filaments are made of wood and bamboo pulp with a weight ratio of 1:3; add impregnation aid LV during impregnation -3, the addition is 0.04wt% of the content of p-methyl cellulose;

[0059] 2. Preparation of spinning stock solution: aging and yellowing alkali cellulose, filtering, defoaming, and aging to obtain spinning stock solution. The alkali content in the spinning stock solution is 5.95wt%; the spinning The composition of stock solution is: methyl fiber content: 8.4wt%; viscosity: 41 seconds; maturity: 10ml;

[0060] 3. Prepare spinning bath: the composition of spinning bath is: H 2 SO 4 : 130g / L, Na 2 SO 4 : 275g / L, ZnSO 4 : 11g / L ...

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