CN111876876B

CN111876876B - Regenerated cellulose fiber soft mat fabric and preparation method thereof

Info

Publication number: CN111876876B
Application number: CN202010608498.5A
Authority: CN
Inventors: 仝晓婷; 肖俐; 陈红霞; 沈玲
Original assignee: Jiangsu Goldsun Textile Science and Technology Co Ltd
Current assignee: Jiangsu Goldsun Textile Science and Technology Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2022-07-29
Anticipated expiration: 2040-06-30
Also published as: CN111876876A

Abstract

The invention discloses a regenerated cellulose fiber soft mat fabric and a preparation method thereof, wherein the warp yarn of the fabric is made of regenerated cellulose staple fiber plied yarn, and the weft yarn is woven by regenerated cellulose filament yarn; oxidized polyethylene wax films are attached to the surfaces of the warp yarns and the weft yarns; the warp tightness of the fabric is more than 100%, and the weft tightness is less than 60%; the fabric comprises the following preparation steps in sequence: warping warp, waxing, drafting and denting, double-jet weft insertion, waxing weft yarn, beating up, and dry printing and dyeing. According to the invention, the warp yarns and the weft yarns are respectively waxed, and then subsequent processes such as weaving and the like are carried out, the warp surface tissues and the weft surface tissues are matched for weaving in an alternate arrangement mode, the tightness of the fabric is controlled, the thickness of the fabric is maximized, and the prepared fabric has natural and bright gloss, cool and smooth touch, and quality and grade.

Description

Regenerated cellulose fiber soft mat fabric and preparation method thereof

Technical Field

The invention relates to a household textile, in particular to a regenerated cellulose fiber soft mat fabric and a preparation method thereof.

Background

The regenerated cellulose fiber soft mat is prepared by using the regenerated cellulose fibers which are slender and soft and have good moisture absorption and air permeability as main raw materials through various types of weaving and knitting. The regenerated cellulose fiber soft mat overcomes the problems that the traditional soft mat is too hard to touch and not soft and is easy to bend in the using process because the traditional soft mat is woven by materials such as bamboo vines, grass trees and the like. However, the regenerated cellulose fiber soft mat has a certain gap from the conventional summer sleeping mat in the contact cool feeling.

The cool feeling of the fabric is related to parameters such as specific heat capacity, heat conductivity coefficient, organizational structure, gram weight and thickness of the fabric, after-finishing process and the like, and specifically, the larger the specific heat capacity and the heat conductivity coefficient of the fabric are, the higher the heat absorption capacity is, and the stronger the cool feeling is in contact with the fabric; the smoother the fabric tissue structure is, the smaller the thermal contact resistance between a human body and the fabric is, the high heat conduction speed is, and the stronger the cool contact feeling is; the thicker the fabric is, the more heat is transferred along the thickness direction, and the stronger the cool feeling is in contact with the fabric; the larger the gram weight of the fabric is, the more the fibers participating in heat conduction are, the more heat is absorbed, and the stronger the contact cool feeling is. Patent CN205947552U discloses a mat face structure that bamboo dall fibre and wood pulp fibre were woven, and the warp adopts and is the paper yarn of flat banded, and the woof adopts and is the bamboo dall fibre yarn of flat banded, and the area of contact between multiplicable human body and the surface fabric reduces thermal contact resistance, promotes the cool sense of contact, but the woof of flat banded makes summer sleeping mat thickness attenuation, and thickness direction absorbed heat ability is relatively weak, leads to the summer sleeping mat cool sense not enough.

At present, the preparation of the summer sleeping mat fabric generally adopts wet processing, and in order to increase the cool feeling effect of the summer sleeping mat fabric, a cool feeling auxiliary agent is usually added in the after-finishing process of the fabric, but the cool feeling auxiliary agent causes the reduction of the air permeability of the fabric, and the cool feeling effect is gradually reduced along with the increase of the washing times. Patent CN205099864U discloses a tencel bamboo pulp fiber soft mat, which adopts thick-count plied yarn made of tencel and bamboo pulp short fiber, the short fiber yarn is twisted and plied, the yarn body is compact, the static air is less, so that the soft mat has the effects of close fitting, cooling and comfort, but the soft mat is processed by the same wet process as other light and thin fabrics, the size is unstable due to the moisture absorption and swelling of the regenerated cellulose fiber, the fiber texture structure is loose, the proportion of the crystallization area is small, the soft mat is easy to be greatly stretched under the wet and hot conditions, the swelling degree is high after moisture absorption, the diameter is thickened, the warp and weft of the fabric are mutually pulled to shrink to cause high shrinkage, especially heavy fabrics, the printing and dyeing process for controlling the shrinkage by the conventional method, such as steam preshrinking, non-iron finishing and the like, and the effect is not great. Meanwhile, the preparation process and period are long, secondary hairiness is caused, desizing is easy to be incomplete, the risk of slurry residue is caused, and the quality of the cloth cover is influenced.

Disclosure of Invention

The invention aims to: the invention provides a regenerated cellulose fiber soft mat fabric which has natural and bright gloss, cool and smooth touch and is not easy to shrink; the invention also aims to provide a preparation method of the regenerated cellulose fiber soft mat fabric.

The technical scheme is as follows: according to the regenerated cellulose fiber soft mat fabric, the warp yarns adopt regenerated cellulose short fiber plied yarns, and the weft yarns adopt regenerated cellulose filaments; oxidized polyethylene wax films are attached to the surfaces of the warp yarns and the weft yarns; the warp tightness of the fabric is more than 100%, and the weft tightness is less than 60%.

The regenerated cellulose filament and staple fibers are produced by adopting cotton pulp or bamboo pulp and other raw materials, have good hygroscopicity and air permeability, as the fabric is an aggregate of fibers, air and water, the better the hygroscopicity of the fibers is, the higher the moisture content is, the specific heat capacity of water is 3-4 times of the fibers under the standard atmosphere (the temperature is 20 ℃ and the moisture regain is 65 percent), the hygroscopicity of the regenerated cellulose fibers is 2 times of the cotton fibers, the specific heat capacity of the regenerated cellulose fibers is higher than that of the cotton fibers, the heat absorption capacity is strong, and the contact cool feeling is enhanced. The research of the invention finds that the regenerated cellulose filament has no twist and elasticity, is easy to slide in the fabric and easy to weave broken ends as the warp, thereby influencing the weaving efficiency, while the regenerated fiber staple fiber plied yarn has soft and bright luster, good slippage resistance, good elasticity and high evenness and is suitable for being used as the warp; in addition, the oxidized polyethylene wax has good film forming property and permeability, in the finishing process, carboxyl in the oxidized polyethylene wax is crosslinked with hydroxyl of the regenerated cellulose fiber, and the oxidized polyethylene wax is fixed to form a film on the surface and inside of the yarn, so that the formed wax film has good stability, and the fabric has strong cool feeling and good gloss; and the weaving mode that adopts warp face tissue and weft face tissue alternate arrangement and the tightness of above-mentioned surface fabric are cooperated for the surface fabric wholly is even smooth massive structure, and the sense of touch is smooth, impels the fabric to constitute high structural phase simultaneously, makes warp crooked, and the woof straightens, realizes reaching the surface fabric thickness maximize under the same condition, makes finally that the surface fabric gloss is natural bright and clear, the sense of touch is cool and smooth and has the quality sense.

Preferably, the warp side weave can be 2/1 twill, 3/1 twill, 4/1 satin weave or warp side jacquard weave, and the weft side weave can be 1/2 twill, 1/3 twill, 1/4 satin weave or weft side jacquard weave.

Preferably, the regenerated cellulose staple fiber plied yarn can be one of pure spinning or blended spinning of lyocell fiber, bamboo pulp fiber and viscose fiber.

Preferably, the regenerated cellulose filament may be one of bamboo pulp filament, viscose filament, cuprammonium filament and acetate filament.

Preferably, the ply number of the regenerated cellulose staple fiber ply yarn is 3 to 4.

The research of the invention finds that the ply number of the regenerated cellulose short fiber ply yarn is in the range, the yarn strength is more than 3.5 times of that of a single yarn, the evenness of yarn evenness is more than 2 times of that of the single yarn, the condition of pulp-free weaving can be met, and the evenness of yarn evenness meets the requirement of cloth cover quality; when the number of the plied yarns is less than 3, the yarn strength and the evenness of the yarn evenness are not greatly improved, and the requirements of the non-sizing weaving and the quality requirement of the cloth cover can not be met due to the influence of the yarn strength and the evenness of the yarn; when the number of ply is more than 4, the fine count single yarn is adopted, the improvement of the yarn strength is limited, and the yarn cost is increased.

Preferably, the regenerated cellulose staple fiber plied yarn count is 12s-32 s.

Preferably, the regenerated cellulose filament yarn count is 300D-600D, and the hole number is 70f-100 f.

The preparation method of the regenerated cellulose fiber soft mat fabric comprises the following steps: warping warp, waxing warp, drafting and reeding, weft insertion, waxing weft, beating up, and dry printing and dyeing.

The research of the invention finds that the gaps among the yarns can be reserved by firstly waxing the warp yarns and the weft yarns and then carrying out the weaving process and the post-finishing process, so that the poor air permeability of the fabric can not be caused, and the air permeability and the moisture absorption of the fabric can be improved. In addition, after the warp yarns are waxed, a layer of wax film can be formed on the surface of the warp yarns, so that the smoothness, smoothness and flexibility of the yarns are improved, and the openings of the warp yarns are clear during weaving, so that the friction coefficient among the yarns can be obviously reduced; meanwhile, the warp yarns are coarse-count regenerated cellulose plied yarns, the strength can reach over 700cN, and the non-sizing weaving condition is met. The dry printing and dyeing is to directly perform the printing process to obtain the finished product without performing wet heat action and drafting processes such as sizing, desizing, singeing, shaping and the like on the grey cloth. The non-pulp weaving and dry printing and dyeing can avoid the fabric from being subjected to the action of damp and heat, and simultaneously reduce the drafting process and the internal stress of the fabric, thereby effectively controlling the shrinkage rate of the soft mat fabric and realizing that the fabric can be washed by water for many times. Meanwhile, a part of traditional processes are reduced, the production cost is reduced, and the production efficiency is improved. In addition, the non-sizing weaving also avoids the risk of residual sizing agent caused by incomplete desizing of thick and heavy compact fabrics.

Preferably, the warp waxing is uniform yarn waxing by a double-sided waxing mechanism.

Preferably, the waxing of the weft yarn is realized by adding a solid waxing device between each weft insertion nozzle and the yarn guide hole, and the weft yarn passes through a wax groove to adhere and fix wax liquid on the weft yarn.

Preferably, the weft insertion adopts a multi-jet process. The regenerated cellulose filament is straight and inelastic, and is flat after beating up, and has no fluffy feeling and soft and elastic feeling. By adopting a multi-spraying process, two or more weft yarns are simultaneously woven in a straightened parallel state, so that the flexibility and softness of the fabric are increased; the weaving frequency of the multi-spraying process is less, the number of the tissue points formed by the weft yarns is less, the regenerated cellulose filaments are relatively fluffy and spread, and the contact comfort of a human body is strong.

Has the advantages that: compared with the prior art, the invention has the following remarkable effects: (1) the warp adopts the regenerated cellulose short fiber plied yarn, and the weft adopts the regenerated cellulose filament; oxidized polyethylene wax films are attached to the surfaces of the warp yarns and the weft yarns, and the thickness of the fabric is maximized by matching with the organization structure and the tightness of the fabric, so that the fabric is natural and bright in gloss, cool and smooth in touch and has quality feeling. (2) In the preparation method, the warp yarns and the weft yarns are firstly waxed, and then the weaving process and the post-finishing process are carried out, so that the fabric is good in air permeability and moisture absorption, the non-pulp weaving process is adopted, the dry condition adopted in the whole production process is met, the drafting effect is reduced, the shrinkage rate of the fabric can be effectively controlled, the luster and the cool feeling of the fabric are further enhanced, and the soft mat is suitable for being used as a summer soft mat.

Drawings

FIG. I is a schematic view of the organization structure of example 1;

FIG. two is a weft sectional view of example 1;

FIG. three is a schematic view of the organization structure of example 2.

Detailed Description

The present invention will be described in detail with reference to examples.

Example 1

Preparing yarns: the warp yarns are Lyocell fibers, and the weft yarns are viscose filaments;

specification: TS30s/3 × (R550D + R550D)/90 × (36+ 36);

organization structure: as shown in fig. 1, the minimum weave cycle of the fabric is divided into four regions i, ii, iii and iv, the total number of warp yarn cycles is 28, the total number of weft yarn cycles is 12, the weave of the regions i, iv, ii and iii on the diagonal is the same as the number of warp and weft yarn cycles, the base weave of the diagonal regions i and iv is 1/2 right diagonal, which is a weft face weave, and the base weave of the other pair of diagonal regions ii and iii is 2/1 left diagonal, which is a warp face weave;

fabric tightness: the warp tightness is 100.2 percent, the weft tightness is 57.6 percent, the fabric is promoted to form a high structural phase, as shown in figure 2, the regenerated cellulose staple fiber yarn of the warp yarn 2 is in a curve shape, and the regenerated cellulose filament yarn of the weft yarn 1 is in a completely extended state and is in a straight-line segment shape;

weaving without pulp: warping warp, oxidizing polyethylene wax on the warp, drafting and denting, weft insertion, oxidizing polyethylene wax on weft, beating up and digital printing.

Through detection, the prepared soft mat fabric has the advantages of luster, cool touch, thickness, water washing dimensional stability and air permeability, and the results are shown in table 1.

Example 2

Preparing yarns: the warp is bamboo pulp fiber, and the weft is bamboo pulp filament;

specification: BR32s/4 × (BR450D + BR450D)/82 × (40+ 40);

organization structure: as shown in fig. 3, the minimum weave cycle of the fabric is divided into four regions i, ii, iii, iv, the total number of warp yarn cycles is 20, the total number of weft yarn cycles is 16, the weave of the regions i, iv, ii and iii on the diagonal is the same as the number of warp and weft yarn cycles, the base weave of the diagonal regions i and iv is 1/3 right diagonal, which is a weft face weave, and the base weave of the other pair of diagonal regions ii and iii is 3/1 left diagonal, which is a warp face weave;

fabric tightness: the warp tightness is 102.1 percent, and the weft tightness is 57.9 percent;

Through detection, the prepared soft mat fabric has the advantages of luster, contact cool feeling, thickness, washing size stability and air permeability, and the results are shown in table 1, so that the fabrics prepared in the examples 1 and 2 in the parameter range limited by the invention have natural and bright luster, maximized thickness, cool and smooth touch, good washing size stability and strong air permeability.

TABLE 1 analysis table of gloss, cool touch, thickness, air permeability and washing dimensional stability of fabric

Comparative example 1

As in example 1, 1 test was conducted except that the warp yarn was different from the raw material, and the warp yarn was a regenerated cellulose filament yarn, and the results are shown in table 2, whereby the prepared mat fabric was similar to example 1 in the cool contact feeling coefficient and air permeability, but the fabric was monotonous in visual appearance and too glittering in gloss.

Comparative example 2

The same as example 1, except that the weft yarn raw material is different, 1 group of tests are designed, the weft yarn is the regenerated cellulose twisted yarn, and the results are shown in table 2, so that the prepared soft mat fabric is natural and soft in gloss and monotonous in visual sense, the thickness of the fabric is increased by the fluffy spun yarn, the internal static air is also increased, and the overall cool contact feeling is lower than that of example 1.

Comparative example 3

The same as example 1, except that the raw material of the warp yarn is the regenerated cellulose filament yarn, the raw material of the weft yarn is the regenerated cellulose staple fiber plied yarn, 1 group of tests are designed, and the results are shown in table 2, so that the prepared soft mat fabric has the gloss, the contact cool feeling, the washing size change rate and the air permeability which are similar to those of example 1, but the fabric surface hand feeling is rough, and the regenerated cellulose filament yarn of the warp yarn is bent to generate the cutting and scraping feeling, thereby influencing the use experience.

TABLE 2 analysis table of gloss, cool touch, thickness, air permeability and washing dimensional stability of fabric

Comparative example 4

The same as example 1, except that the type of the wax is different, 1 set of test is designed, and the result is shown in table 3, so that the prepared soft mat fabric has the characteristics of glossy surface with wax feeling, poor skin-friendly feeling, poor contact cool feeling, and poor film forming stability due to the fact that the ordinary wax cannot penetrate into the fiber, and the glossy feeling and the hand feeling are poor.

TABLE 3 analysis table of gloss, cool touch, thickness, air permeability and washing dimensional stability of fabric

Comparative example 5

The same as example 1, except that the tightness of the fabric in the warp direction and the tightness of the weft direction are different, 1 group of tests are designed, the tightness in the warp direction is 82.3%, the tightness in the weft direction is 76.9%, and the results are shown in table 4, so that the thickness of the prepared soft mat fabric is two thirds of that of example 1, and the tightness of the fabric influences the thickness of the fabric, so that the cool feeling of the fabric in contact is reduced. In addition, the regenerated cellulose filaments of the weft yarn of comparative example 5 are buckled, the filaments are thick, the stiffness and the hardness are high, the buckling parts can generate the cutting and scraping feeling when the weft yarn is horizontally moved and touched along the weft direction, and the smoothness and the fineness of the hand feeling are lower than those of the weft yarn of example 1.

TABLE 4 analysis table of gloss, cool touch, thickness, air permeability and washing size stability of fabric

Comparative example 6

The same as example 1, except that the number of the warp yarns is different, 3 tests are designed, the number of the test group 1 is 2, the number of the test group 2 is 5, the number of the test group 3 is 6, and the results are shown in table 5, so that when the number of the test groups is 2, the gloss and the contact cool feeling of the prepared soft mat fabric are slightly inferior to those of example 1, and the small number of the yarns does not greatly improve the yarn strength and the evenness and cannot meet the requirements of the non-sizing weaving; when the number of the folded strands is 5 and 6, the gloss and the contact cool feeling of the prepared soft mat fabric are slightly superior to those of the soft mat fabric in example 1; when the number of the twisted yarns is larger, the smoothness of the fabric is improved, so that the gloss and the contact cool feeling are improved, and meanwhile, the process complexity, the production efficiency and the economic cost are increased.

TABLE 5 analysis table of gloss, cool touch, thickness, air permeability and washing dimensional stability of fabric

Comparative example 7

The same as example 1, except that the weaving method is different, 1 set of test is designed, the result is shown in table 6, therefore, the thickness and the contact cool feeling of the prepared soft mat fabric are lower than those of example 1, the single jet beating method is adopted, the number of weft interlacing points is large, the fabric is thin, and the hand feeling is harder than that of a board.

TABLE 6 analysis table of gloss, cool touch, thickness, air permeability and washing dimensional stability of fabric

Comparative example 8

The difference from example 1 is that wet processing including sizing and desizing, printing and washing, and soft setting is adopted, and the results are shown in table 7, and it is seen that the change rate of the washed dimension of the prepared soft mat fabric is less than the range of-5 to +2, and the wet processing has a large influence on the shrinkage of the thick regenerated cellulose fabric.

TABLE 7 analysis table of gloss, cool touch, thickness, air permeability and washing dimensional stability of fabric

Comparative example 9

The difference from example 1 is that the gloss, cool touch, thickness, and dimensional change rate in washing were similar to those of example 1, but the air permeability was only one tenth, and thus the air permeability of the fabric was affected by the weaving step first and then the waxing of the fabric.

TABLE 8 analysis table of gloss, cool touch, thickness, air permeability and washing dimensional stability of fabric

The fabric prepared by the invention is verified in five aspects of gloss, cool contact, thickness, air permeability and washing dimensional stability, and the specific test method comprises the following steps:

The gloss feeling is subjectively evaluated by multiple persons;

the method for testing the contact cool feeling adopts GB/T35263 and 2017 detection and evaluation of the performance of the textile in the contact instant cool feeling, and the detection index is the coefficient of the contact instant cool feeling (J.cm) ^-2 ·s ^-1 ) Coefficient of instantaneous cool feeling upon contactThe value is more than 0.15, which shows that the contact instant cooling performance is achieved, and the larger the value is, the better the contact cooling effect is;

the thickness test method adopts GB/T38201997 determination of textile and textile product thickness, the detection index is thickness (mm), and the larger the value is, the thicker the value is;

the air permeability test method adopts GB/T5453-1997 determination of the air permeability of textile fabrics, the detection index is air permeability (mm/s), and the larger the air permeability value is, the better the air permeability effect is;

the method for testing the size stability of the water washing adopts the execution stipulated in GB/T8628-2013, GB/T8629-2017 and GB/T8630-2013, selects a 4N program, hangs and dries, the detection index is the size change rate (%) of the water washing, the requirement is-5- +2.0, the numerical value is closer to 0, the smaller the size change rate before and after the water washing is, and the better the size stability of the water washing is.

Claims

1. A preparation method of a regenerated cellulose fiber soft mat fabric is characterized by comprising the following steps: warping warp, waxing warp, drafting and denting, weft insertion, waxing weft, beating up, and dry printing and dyeing, wherein the dry printing and dyeing is to directly perform a printing process to obtain a finished product without performing sizing and desizing, singeing, setting damp-heat action and drafting processes on gray fabric; the warp yarns of the fabric are made of regenerated cellulose short fiber plied yarns, the weft yarns are made of regenerated cellulose filaments, oxidized polyethylene wax films are attached to the surfaces and the inside of the warp yarns, the surface tightness of the weft yarns is greater than 100%, the surface tightness of the weft yarns is less than 60%, and warp-side tissues and weft-side tissues of the fabric are alternately arranged.

2. The method of claim 1, wherein: the regenerated cellulose short fiber twisted yarn is one of pure spinning or blended spinning of lyocell fiber, bamboo pulp fiber and viscose fiber.

3. The method of claim 1, wherein: the regenerated cellulose filament is one of bamboo pulp filament, viscose filament, cuprammonium filament and acetic acid filament.

4. The production method according to claim 1 or 2, characterized in that: the ply number of the regenerated cellulose staple fiber ply yarn is 3-4.

5. The production method according to claim 1 or 2, characterized in that: the yarn count of the regenerated cellulose staple fiber plied yarn is 12s-32 s.

6. The production method according to claim 1 or 3, characterized in that: the yarn count of the regenerated cellulose filament is 300D-600D, and the number of holes is 70f-100 f.

7. The method of claim 1, wherein: and uniformly waxing the warp yarns by using a double-sided waxing mechanism.

8. The method of claim 1, wherein: and the weft yarns are evenly waxed by adding a solid waxing device between each weft insertion nozzle and each yarn guide hole.

9. A method of making a regenerated cellulose fiber mat according to claim 1, characterized in that: and the weft insertion adopts a multi-jet process.

10. A regenerated cellulose fiber mat material characterized by being produced by the method of any one of claims 1 to 9.