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A preparation method of viscose fiber for flocking and post-processing equipment used in the preparation method

A viscose fiber and flocking technology, which is applied in the field of viscose fiber for flocking and post-processing equipment, can solve the problems of large differences in quality uniformity and stability, poor dyeing uniformity, and high residual sulfur content, and achieve improved physical and mechanical Performance and deformability, complete molding, low residual sulfur effect

Active Publication Date: 2019-11-15
赛得利(盐城)纤维有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But at present, the factors restricting viscose fiber as the fiber of high-grade flocking fabrics are: high residual sulfur content, high defects, poor dyeing uniformity, etc., and the quality uniformity and stability of different batches of products are quite different, so the development of a It is of great significance to develop a viscose fiber with excellent performance and stability to meet the needs of downstream high-end flocking products

Method used

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  • A preparation method of viscose fiber for flocking and post-processing equipment used in the preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0056] The cellulose pulp is made into a spinning stock solution, and the cellulose spinning stock solution is solidified and formed by a coagulation bath of a spinning machine to obtain a primary filament. To obtain large strands of primary fiber bundles, the primary fiber bundles are sequentially processed through the following steps:

[0057] (1) Enter the as-spun fiber bundle into the second bath for wet-heat drafting, and obtain sheet-like tow sheet after wet-heat drafting; sulfuric acid 20g / L is contained in the second bath; the temperature-resistant and acid-resistant steam pipe from the bottom of the second bath Pass into steam, the upper part of the temperature-resistant and acid-resistant steam pipe is evenly distributed with vent holes, and the steam heating keeps the temperature of the second bath liquid at 98-100°C; the draft rate of the wet-heat drawing is 10%;

[0058] (2) The sheet-like tow sheet is entered into a cooling and shrinking bath, the cooling and shr...

Embodiment 2

[0064] The cellulose pulp is made into a spinning stock solution, and the cellulose spinning stock solution is solidified and formed by a coagulation bath of a spinning machine to obtain a primary filament. Obtain large primary fiber bundles, the draft ratio of the nozzle draft is 60%, the draft ratio of the wire guide draft is 2%; the draft ratio of the guide roller draft is 25%; The fiber bundle goes through the following processing steps in sequence:

[0065] (1) The as-spun fiber bundle is entered into a 32m long two-bath tank for wet-heat drafting, and sheet-like tow sheet is obtained after wet-heat drafting; sulfuric acid 25g / L is contained in the two-bath liquid; temperature resistance from the bottom of the two-bath tank The acid-resistant steam pipe is fed with steam, and the upper part of the temperature-resistant and acid-resistant steam pipe is evenly distributed with vent holes, and the steam heating keeps the temperature of the second bath liquid at 99-100°C; the...

Embodiment 3

[0072] The cellulose pulp is made into a spinning stock solution, and a nano-titanium dioxide slurry with a p-methyl fiber content of 1.5wt% is added to the spinning stock solution, and the cellulose spinning stock solution is solidified and formed in a coagulation bath of a spinning machine to obtain a primary filament. After nozzle drafting, wire guide drafting, and guide roller drafting, clustering is carried out to obtain large strands of primary fiber bundles. The drafting ratio of the nozzle drafting is 50%, and the drafting ratio of the wire guiding drafting is 1.5%. %; The draft ratio of described guide roller drafting is 35%; The as-spun fiber bundle is passed through following processing step successively:

[0073] (1) The as-spun fiber bundle is entered into a 35m long two-bath tank for wet-heat drafting, and sheet-like tow sheet is obtained after wet-heat drafting; sulfuric acid 18g / L is contained in the two-bath liquid; temperature resistance from the bottom of the...

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Abstract

The invention discloses a preparation method for viscose fiber for flocking and post-treatment equipment used by the preparation method. A primary fiber bundle is sequentially treated by the following treatment steps: (1) introducing the primary fiber bundle into a two-bath slot to perform damp-hot drafting, thereby obtaining a silk flock sheet; (2) introducing the silk flock sheet into a cooling and retracting bath, wherein negative drafting is adopted for cooling and retracting; (3) dehydrating the silk flock sheet and introducing the dehydrated silk flock sheet into a desulfuration one-bath slot; (4) dehydrating the silk flock sheet subjected to desulfuration one-bath treatment and introducing the dehydrated silk flock sheet into a desulfuration two-bath slot; and (5) washing the silk flock sheet subjected to desulfuration through washing one-bath treatment, washing two-bath treatment and washing three-bath treatment in sequence; (6) dehydrating and cutting off the washed silk flock sheet to obtain finished silk flock. The post-treatment equipment comprises the two-bath slot, a cooling and retracting slot, the desulfuration one-bath slot, the desulfuration two-bath slot, a washing one-bath slot, a washing two-bath slot, a washing three-bath slot and a cutting packaging machine. The preparation method solves the problems that viscose fibers, which are used for fibers for flocking, are high in sulfur residues, are uneven in dyeing and the like.

Description

technical field [0001] The invention relates to the technical field of viscose fiber, in particular to viscose fiber for flocking and post-processing equipment. Background technique [0002] In recent years, electrostatic flocking has been widely used in industrially developed countries, such as the United States, Italy, Germany, and Japan, and its products are popular because of its unique decorative effect of suede and embroidery, as well as its simple process, low cost, and strong adaptability. In recent years, my country has also developed a variety of electrostatic flocking products. Electrostatic flocking has the characteristics of high production efficiency, low cost, many varieties of designs and colors, and wide adaptability. Automotive interiors, seals, stationery, toys, packaging, decoration, instrumentation and many other industries. [0003] The fibers used for flocking not only have certain requirements on the length and fineness of the fibers, but also have ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F2/08D01F11/02D01D5/14D01D10/00
CPCD01D5/14D01D10/00D01F2/08D01F11/02
Inventor 刘海洋叶荣明瞿俊荣周州王法吕正稳
Owner 赛得利(盐城)纤维有限公司
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