CN112064337B - Natural elastic pure cotton gauze and manufacturing method thereof - Google Patents
Natural elastic pure cotton gauze and manufacturing method thereof Download PDFInfo
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- CN112064337B CN112064337B CN202010798735.9A CN202010798735A CN112064337B CN 112064337 B CN112064337 B CN 112064337B CN 202010798735 A CN202010798735 A CN 202010798735A CN 112064337 B CN112064337 B CN 112064337B
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- 229920000742 Cotton Polymers 0.000 title claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 77
- 238000005406 washing Methods 0.000 claims abstract description 68
- 230000018044 dehydration Effects 0.000 claims abstract description 27
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 27
- 238000001035 drying Methods 0.000 claims abstract description 23
- 239000012670 alkaline solution Substances 0.000 claims abstract description 20
- 238000007493 shaping process Methods 0.000 claims abstract description 15
- 239000003513 alkali Substances 0.000 claims abstract description 13
- 238000009941 weaving Methods 0.000 claims abstract description 13
- 239000004744 fabric Substances 0.000 claims description 69
- 208000005156 Dehydration Diseases 0.000 claims description 25
- 102000004190 Enzymes Human genes 0.000 claims description 24
- 108090000790 Enzymes Proteins 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000007639 printing Methods 0.000 claims description 15
- 238000004043 dyeing Methods 0.000 claims description 14
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 238000009990 desizing Methods 0.000 claims description 11
- 239000004902 Softening Agent Substances 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 7
- 238000007670 refining Methods 0.000 claims description 5
- 239000000975 dye Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 230000002255 enzymatic effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 15
- 238000002791 soaking Methods 0.000 abstract description 2
- 230000008961 swelling Effects 0.000 description 11
- 239000010410 layer Substances 0.000 description 10
- 238000011084 recovery Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 238000004513 sizing Methods 0.000 description 7
- 229920002334 Spandex Polymers 0.000 description 5
- 239000004759 spandex Substances 0.000 description 5
- 210000004177 elastic tissue Anatomy 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008521 reorganization Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
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-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/58—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides
- D06M11/59—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides with ammonia; with complexes of organic amines with inorganic substances
- D06M11/61—Liquid ammonia
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/38—Threads in which fibres, filaments, or yarns are wound with other yarns or filaments, e.g. wrap yarns, i.e. strands of filaments or staple fibres are wrapped by a helically wound binder yarn
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L1/00—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods
- D06L1/12—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods using aqueous solvents
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L1/00—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods
- D06L1/12—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods using aqueous solvents
- D06L1/14—De-sizing
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/58—Material containing hydroxyl groups
- D06P3/60—Natural or regenerated cellulose
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/01—Natural vegetable fibres
- D10B2201/02—Cotton
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/06—Load-responsive characteristics
- D10B2401/061—Load-responsive characteristics elastic
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Woven Fabrics (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The pure cotton natural elastic gauze and the manufacturing method thereof, the manufacturing method specifically comprises the following steps of wrapping cotton with alkali-soluble filament yarn in sequence: warping, weaving, loose washing, dehydration drying, liquid ammonia treatment and loose alkali washing. Wherein, liquid ammonia treatment: and soaking the gauze treated in the dehydration and drying steps in liquid ammonia for treating for 8s-14s, wherein the tension applied to the gauze in the liquid ammonia treatment is not more than 4.5kg. Loose alkaline washing: and (3) placing the gauze treated by the liquid ammonia into an alkaline solution, and washing for 25-30min, wherein the alkaline solution is 80-95 ℃, and the pH value of the alkaline solution is 13-14. According to the manufacturing method, liquid ammonia treatment plays a role in shrinking and shaping the gauze, the gauze after shrinking and shaping is washed with alkali in a loose mode, alkali-soluble filaments are dissolved under an alkaline condition, and then the cotton yarns are removed through washing, so that the natural and stable elastic spiral structures can be presented, and a natural elastic effect is realized.
Description
Technical Field
The invention relates to the field of textiles, in particular to pure cotton natural elastic gauze and a manufacturing method thereof.
Background
The gauze for the clothes is characterized by sparse structure, ventilation, softness and skin friendliness, is mainly used for home wear, bedding, infant clothes and the like which are worn next to the skin, and has high requirements on hand feeling. Elastic gauzes are few in products in the market at present, mainly because the hand feeling of the gauzes added with elastic fibers is hard, the elasticity of the gauzes is unstable due to sparse structures of the gauzes, particularly the elastic recovery performance is poor, and the spandex elastic fibers are not colored in the dyeing process of the fabric, so that the risk of spandex color leakage exists; meanwhile, pure cotton natural elastic fabrics of gauze class do not exist in the current market.
Disclosure of Invention
The invention provides a pure cotton natural elastic gauze and a manufacturing method thereof, and mainly aims to improve the elastic stability and the elastic recovery performance of the elastic gauze.
An embodiment of the present application provides a method for manufacturing pure cotton natural elastic gauze, which sequentially includes:
a warping step: warping the cotton bale wrapped alkali-soluble filament yarn;
weaving: weaving the cotton bale wrapped with the alkali-soluble filament yarn into gauze;
loose water washing step: carrying out enzyme washing and hot washing on the gauze treated in the weaving step to remove slurry on the gauze;
a dehydration and drying step: dehydrating the gauze subjected to loose washing by adopting a centrifugal dehydration mode, and drying the gauze after dehydration;
liquid ammonia treatment: immersing the gauze treated in the dehydration and drying step in liquid ammonia for 8-14 s, wherein the tension applied to the gauze in the liquid ammonia treatment step is not more than 4.5kg;
a loose alkali washing step: washing the gauze treated by the liquid ammonia in an alkaline solution for 25-30min, wherein the temperature of the alkaline solution is 80-95 ℃, and the pH value of the alkaline solution is 13-14; after washing, washing the gauze with water at normal temperature for 10-15min, wherein the normal temperature is 20-25 ℃; washing with water at normal temperature and dehydrating.
In one embodiment, the cotton-wrapped alkali-soluble filament yarn is a 30S (40D) -40S (40D) cotton-wrapped alkali-soluble filament yarn.
In one embodiment, the method further comprises: and a wet cloth shaping step, wherein the gauze subjected to dehydration treatment in the loose alkali washing step is shaped to improve the dimensional stability of the gauze.
In one embodiment, a softening agent is added in the wet cloth setting step; the softening agent is 5g/l-10g/l.
In one embodiment, after the dehydration and drying step and before the liquid ammonia treatment step, a dyeing step and/or a printing step are further included; dyeing the gauze before the liquid ammonia treatment step by using a dyeing agent in the dyeing step; in the printing step, printing treatment is carried out on the gauze before the liquid ammonia treatment step; and the liquid ammonia treatment step is used for carrying out liquid ammonia treatment on the gauze subjected to the dyeing step and/or the printing step.
In one embodiment, the liquid ammonia temperature in the liquid ammonia treatment step is-33 ℃ to-30 ℃; the alkaline solution in the loose alkaline washing step is a sodium hydroxide solution with a weight ratio of 2%.
In one embodiment, the cloth feeding speed of the gauze in the liquid ammonia treatment step is the same as the speed of each guide roller; the vehicle speed is 30m/min-40m/min.
In one embodiment, the loose water washing step is to wash the gauze with enzyme, the enzyme washing solution contains desizing enzyme and refining penetrant, the desizing enzyme is enzyme water, and the hot washing temperature is 80-90 ℃.
The pure cotton natural elastic gauze is prepared by adopting the manufacturing method of any one of the above.
The method for manufacturing the pure cotton natural elastic gauze according to the embodiment comprises the following steps:
the used yarn is the cotton-wrapped alkali-soluble filament yarn, and the cotton-wrapped alkali-soluble filament yarn has good wear resistance and strength, so that sizing and re-weaving of the yarn are not needed, and the process is green and environment-friendly.
The main purpose of loose washing is to wash away the starch thick liquids on the surface fabric, improves the fabric and feels, and for conventional open width long car desizing process, the tension of loose washing is less, and the fabric can abundant shrink through the washing, can effectual reduction fabric internal stress's production for the fabric keeps relaxed soft feel, and because the gauze structure is sparse, the too big node that can cause between the different layers of tension is too big moreover, influences cloth cover effect and pleasing to the eye degree.
The dehydration and drying mainly comprises the steps of drying and controlling the width, improving the dimensional stability of the gauze and mainly reducing the shrinkage rate of the fabric in warp stretching.
In the step of liquid ammonia treatment, the tension of the gauze is ensured to be small during the liquid ammonia treatment, and the weft can be naturally contracted. Tension is too big, and the gauze can produce the layer and move, and the two-layer tie point space of gauze can the grow, and the cloth cover effect is not good, and the surface fabric shrinkage can the grow well be controlled in addition. The tension applied to the gauze in the liquid ammonia treatment step is not more than 4.5kg. When the tension is not more than 4.5kg, the gauze fabric is in a loose state, so that the fabric can be fully shrunk in the weft direction, and the gauze fabric has a good elastic effect. When the tension is too large and exceeds 4.5kg, the warp-direction tension is too large, the whole fabric is in a tight state, and the weft-direction shrinkage of the fabric is insufficient, so that the elastic effect is influenced; in addition, too large tension can also affect the warp shrinkage of the fabric, if the warp shrinkage is too large, large overfeeding is carried out when shaping is needed, and the weft direction of the fabric is stretched greatly, so that the weft direction elasticity is also affected. The gauze is soaked in liquid ammonia for 8s-14s, which is a necessary time for fully swelling the cotton fibers, the swelling and shaping are not sufficient after the swelling time is too short, the swelling reaches the limit after the swelling time is too long, and the enhancement effect is not achieved. The gauze is dipped in the liquid ammonia for short time, and the cotton fabric is not damaged; and the liquid ammonia after the gauze is treated by the liquid ammonia can be automatically gasified, removed and recycled, and the process is green and environment-friendly. This application need not to use the operation of heavily twisting yarn, and the fabric soft in touch is in the same direction as smooth after the liquid ammonia treatment, and elastic recovery is better. The product fills the market blank of the pure cotton natural elastic gauze, and improves the performance and application space of the gauze.
And a liquid ammonia treatment step, wherein the gauze is subjected to shrinkage sizing, the gauze subjected to shrinkage sizing is subjected to loose alkali washing, alkali-soluble filaments are dissolved under an alkaline condition, and the alkali-soluble filaments are removed by washing, so that the cotton yarn can be in a natural and stable elastic spiral structure, the natural elastic effect is realized, and the prepared gauze has good elastic stability and elastic recovery performance.
Drawings
FIG. 1 is a schematic representation of a variation in the construction of an alkali-soluble filament yarn wrapped with cotton in one embodiment of the present application;
FIG. 2 is a schematic representation of the structural change of cotton fiber before and after liquid ammonia treatment in one embodiment of the present application.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.
Furthermore, the described features, operations, or characteristics may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).
And (3) natural elastic fabric: generally, woven fabrics which achieve a certain elasticity without using elastic fibers (spandex); generally, after the fabric is formed, the weft direction has certain stretching and recovery space and capacity.
Specifically, in one embodiment, a method for manufacturing a pure cotton natural elastic gauze sequentially includes:
a warping step: the cotton bale was wrapped with alkali-soluble filament yarn and subjected to warping.
Weaving: the cotton after the treatment is wrapped by alkali soluble filament yarn and is woven into gauze.
Loose water washing step: and carrying out enzyme washing and hot washing on the gauze treated in the weaving step to remove the sizing agent on the gauze.
A dehydration and drying step: and dehydrating the gauze subjected to loose washing by adopting a centrifugal dehydration mode, and drying the gauze after dehydration.
Liquid ammonia treatment: and soaking the gauze treated in the dehydration and drying step in liquid ammonia for 8-14 s, wherein the tension applied to the gauze in the liquid ammonia treatment step is not more than 4.5kg.
A loose alkali washing step: washing the gauze treated by the liquid ammonia in an alkaline solution for 25-30min, wherein the temperature of the alkaline solution is 80-95 ℃, and the pH value of the alkaline solution is 13-14; washing the gauze with water at normal temperature for 10-15min, wherein the normal temperature is 20-25 ℃; and (4) carrying out dehydration operation after washing.
The manufacturing method of the pure cotton natural elastic gauze according to the embodiment comprises the following steps:
the used yarn is the cotton-wrapped alkali-soluble filament yarn, and the cotton-wrapped alkali-soluble filament yarn has good wear resistance and strength, so that sizing and re-weaving of the yarn are not needed, and the process is green and environment-friendly.
The main purpose of loose washing is to wash away the starch thick liquids on the surface fabric, improves the fabric and feels, and for conventional open width long car desizing process, the tension of loose washing is less, and the fabric can abundant shrink through the washing, can effectual reduction fabric internal stress's production for the fabric keeps relaxed soft feel, and because the gauze structure is sparse, the too big node that can cause between the different layers of tension is too big moreover, influences cloth cover effect and pleasing to the eye degree.
The dehydration and drying mainly comprises the steps of drying and controlling the width, improving the dimensional stability of the gauze and mainly reducing the shrinkage rate of the fabric in warp stretching.
In the step of liquid ammonia treatment, the tension of the gauze is ensured to be small during liquid ammonia treatment, and the weft direction can be naturally contracted. Tension is too big, and the gauze can produce the layer and move, and the two-layer tie point space of gauze can the grow, and the cloth cover effect is not good, and the surface fabric shrinkage can the grow well in addition control. The tension applied to the gauze in the liquid ammonia treatment step is not more than 4.5kg. When the tension is not more than 4.5kg, the gauze fabric is in a loose state, so that the fabric can be fully shrunk in the weft direction, and the gauze fabric has a good elastic effect. When the tension is too large and exceeds 4.5kg, the longitudinal stretching force is too large, the whole fabric is in a tight state, and the latitudinal contraction of the fabric is insufficient, so that the elastic effect is influenced; in addition, too large tension can also influence the warp shrinkage of the fabric, if the warp shrinkage is too large, large overfeeding is carried out when shaping is needed, and the weft direction of the fabric is stretched greatly, so that the weft direction elasticity is also influenced. The gauze is soaked in liquid ammonia for 8s-14s, which is a necessary time for fully swelling the cotton fibers, the swelling and shaping are not sufficient after the swelling time is too short, the swelling reaches the limit after the swelling time is too long, and the enhancement effect is not achieved. The gauze is dipped in the liquid ammonia for a short time, and the cotton fabric is not damaged; and the liquid ammonia after the gauze is treated by the liquid ammonia can be automatically gasified, removed and recycled, and the process is green and environment-friendly. This application need not to use the operation of heavily twisting yarn, and the fabric soft in touch is in the same direction as smooth after the liquid ammonia treatment, and elastic recovery is better. The product fills the market blank of the pure cotton natural elastic gauze, and improves the performance and the application space of the gauze.
And (2) a liquid ammonia treatment step, wherein the gauze is subjected to shrinkage sizing, the gauze subjected to shrinkage sizing is subjected to loose alkali washing, as shown in figure 1, alkali-soluble filaments are dissolved under an alkaline condition, and then the alkali-soluble filaments are removed by washing, so that the cotton yarn can be in a natural and stable elastic spiral structure, the natural elastic effect is realized, and the prepared gauze has better elastic stability and elastic recovery performance.
Preferably, in one embodiment, the cotton-wrapped alkali-soluble filament yarn is a 30S (40D) -40S (40D) cotton-wrapped alkali-soluble filament yarn. In order to ensure the structural stability of the yarn after liquid ammonia treatment, the yarn is not easy to be too thin, and in order to ensure the overall hand feeling requirement of the fabric (theoretically, the thicker the yarn is, the more stable the yarn is, the thinner the yarn is, the better the hand feeling is), the preferable cotton-covered alkali-soluble filament yarn of 30S (40D) -40S (40D) is, and the yarn is better compatible with the requirements on the stability and hand feeling of the yarn.
Preferably, in an embodiment, the method further comprises: wet cloth shaping: and (4) shaping the gauze subjected to dehydration treatment in the loose alkali washing step so as to improve the dimensional stability of the gauze. And (3) finished product preparation: and rolling, slitting and packaging the gauze subjected to the wet cloth shaping step to obtain a finished product and putting the finished product in storage. And the wet cloth is shaped to improve the dimensional stability.
Preferably, in one embodiment, a softening agent is added in the step of setting the wet cloth; the softening agent is 5-10g/l. The softness of the fabric can be improved by adding the softening agent.
In one embodiment, after the dehydration and drying step and before the liquid ammonia treatment step, a dyeing step and/or a printing step are/is further included; in the dyeing step, dyeing the gauze before the liquid ammonia treatment step by using a dyeing agent; in the printing step, printing treatment is carried out on the gauze before the liquid ammonia treatment step; and the liquid ammonia treatment step is used for carrying out liquid ammonia treatment on the gauze subjected to the dyeing step and/or the printing step. In the dyeing step or the printing step, the white gauze can be changed into the gauze with rich appearance, the market popularization of the gauze is increased, and the gauze has certain economic value.
Preferably, in one embodiment, the liquid ammonia temperature in the liquid ammonia treatment step is from-33 ℃ to-30 ℃; the alkaline solution in the loose alkaline washing step is a 2% by weight sodium hydroxide solution. The cotton-wrapped alkali-soluble filament yarn is soaked in liquid ammonia liquid at the temperature of between 33 ℃ below zero and 30 ℃ below zero, ammonia molecules can enter macromolecular chains of cotton fibers instantly, the cotton fibers can swell within a few seconds, the cross sections of the fibers are changed into elliptical shapes from ear-shaped shapes (as shown in figure 2), and the macromolecular chain structure reorganization of the cotton fibers is realized, so that the bending states of the cotton fibers and the yarn are reinforced. The warp direction of the processing process is stretched by external force, and the weft direction is not tensioned, so that the weft direction of the fabric is integrally shrunk due to the swelling of the cotton fibers, and the improvement of the weft direction elasticity is facilitated.
Preferably, in one embodiment, the cloth feeding speed of the gauze in the liquid ammonia treatment step is the same as the speeds of the guide rollers; the vehicle speed is 30-40m/min.
Preferably, in one embodiment, the loose water washing step is performed by enzyme washing the gauze, the enzyme washing solution contains desizing enzyme and refining penetrant, the desizing enzyme is enzyme water, and the hot washing temperature is 80-90 ℃.
A natural elastic pure cotton gauze is prepared by adopting a method for preparing the natural elastic pure cotton gauze.
The following is a further description of a more specific embodiment.
Example 1
The natural elastic pure cotton gauze is prepared by the following preparation method, which comprises the following steps:
step S1, warping step: the cotton bale was wrapped with alkali-soluble filament yarn and subjected to warping. Wherein the cotton-wrapped alkali-soluble filament yarn is a 30S (40D) cotton-wrapped alkali-soluble filament yarn.
Step S2, weaving: the cotton bales which are treated are wrapped with alkali-soluble filament yarn and woven into gauze, the gauze is of a plain weave double-layer structure, and the single-layer density is 50 pieces/inch in the warp direction and 50 pieces/inch in the weft direction; the two layers of connection points are arranged in a prismatic or square shape, and the distance between the connection points is 1-1.5cm; the width of the grey cloth is 165cm.
Step S3, loose water washing step: and carrying out enzyme washing and hot washing on the gauze treated in the weaving step to remove the slurry on the gauze, wherein the speed is 50 m/min. Wherein the enzyme washing temperature is 60 deg.C, the enzyme washing time is 30min, the enzyme washing solution contains desizing enzyme and refining penetrant, the desizing enzyme is enzyme water (desizing enzyme) SUHONG DESIZYME 2g/L, and the refining penetrant is FORYL WET 0.5g/L. The temperature of the hot washing was 85 ℃ and the hot washing time was 5 minutes.
Step S4, dewatering and drying: and (3) dehydrating the loose washed gauze by adopting a centrifugal dehydration mode, wherein the speed is 50 m/min, the rotation speed is 300 r/min, and the time is 5 min. And drying the gauze after dehydration, wherein the speed is 40m/min, the width is fixed to 149cm, the overfeeding is 4/0, the temperature is 150 ℃, and the width falls to 149cm.
Step S5, printing: and printing the dehydrated and dried gauze to make the gauze present patterns and enrich the appearance of the gauze.
Step S6, liquid ammonia treatment: sending the printed gauze into a liquid ammonia finishing machine (model: LAFER permafix, italy) for liquid ammonia treatment; the cloth feeding speed of the gauze is the same as the speeds of the guide rollers; the speed of the vehicle is 30-40m/min, and in order to reduce the stretching in the warp direction during cloth feeding, the cloth is fed by adopting a winding A sub-frame. Wherein, sealed 1 department tension is 3kg, sealed 2 department tension is 4.5kg, sealed 1 is equivalent to the front end of liquid ammonia collator sealed, sealed 2 is the rear end of liquid ammonia collator sealed, sealed 1 and sealed 2 make the liquid ammonia collator form a relatively airtight space, avoid liquid ammonia to reveal.
The gauze sequentially passes through a sealing area 1, a padding area, a reaction area, an evaporation area, a sealing area 2 and a drying cylinder area. The pad zone applied 4.5kg of tension to the gauze, the reaction zone applied 3.5kg of tension to the gauze, the evaporation zone applied 3.5kg of tension to the gauze and the dryer zone applied 4kg of tension to the gauze.
Immersing the gauze treated in the dehydration and drying step in liquid ammonia for treating for 8s-14s, wherein the temperature of the liquid ammonia is-33 ℃ to-30 ℃. The width of the cloth outlet is 125-128 cm.
In the step of liquid ammonia treatment, the tension of the gauze is ensured to be small during liquid ammonia treatment, and the weft direction can be naturally contracted. Tension is too big, and the gauze can produce the layer and move, and the two-layer tie point space of gauze can the grow, and the cloth cover effect is not good, and the surface fabric shrinkage can the grow well be controlled in addition.
Step S7, a loose alkali washing step: placing the gauze treated by the liquid ammonia into an alkaline solution, wherein the alkaline solution is a sodium hydroxide solution with the weight ratio of 2%, and washing the gauze for 25min in the alkaline solution with the temperature of 90 ℃, and the pH value of the alkaline solution is 13; washing with alkaline solution, and washing gauze with water at 20 deg.C at normal temperature for 12min. The water is washed at normal temperature and then dehydrated, the speed is 50 m/min, the rotation speed is 300 r/min, and the time is 5 min.
Step S8, wet cloth shaping step: and (4) shaping the gauze subjected to dehydration treatment in the loose alkali washing step so as to improve the dimensional stability of the gauze. Wherein the speed is 60-80 m/min, the constant amplitude is 130-133cm, the overfeed is 2/0, the temperature is 150 ℃, and the amplitude falls to 130-133cm; adding a softening agent with the dosage of 5-10g/l, and dropping cloth in a vehicle. Mainly through the cloth clamp stretching and high-temperature drying effects in the weft direction, the width of the fabric is stabilized, and the size stability of the fabric is improved.
Step S9, finished product step: and rolling, slitting and packaging the gauze subjected to the wet cloth shaping step to obtain a finished product and putting the finished product in storage.
The relevant elastic property tests of the pure cotton natural elastic gauze prepared in the embodiment 1 of the invention and the existing fabric are shown in the following table:
as can be seen from the above table, the pure cotton natural elastic gauze has moderate elasticity, good elastic recovery and small shrinkage. Compared with the common pure cotton natural elastic fabric, the constant force elongation and the constant force elastic recovery rate are obviously improved. Although the pure cotton natural elastic gauze is slightly smaller than the fixed force elongation of the spandex elastic fiber gauze, the pure cotton natural elastic gauze reaches 18-22% of directional elongation on the premise of not adding spandex, has obvious advantages in the aspects of use comfort, environmental protection and the like and has great market potential.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (7)
1. A method for manufacturing pure cotton natural elastic gauze is characterized by sequentially comprising the following steps:
a warping step: warping the cotton bale wrapped alkali-soluble filament yarn;
weaving: weaving the cotton bale wrapped with the alkali-soluble filament yarn into gauze;
loose water washing step: carrying out enzyme washing and hot washing on the gauze treated in the weaving step to remove slurry on the gauze;
a dehydration and drying step: dehydrating the gauze subjected to loose washing by adopting a centrifugal dehydration mode, and drying the gauze after dehydration;
liquid ammonia treatment: immersing the gauze treated in the dehydration and drying step in liquid ammonia for 8-14 s, wherein the tension applied to the gauze in the liquid ammonia treatment step is not more than 4.5kg;
a loose alkali washing step: washing the gauze treated by the liquid ammonia in an alkaline solution for 25-30min, wherein the temperature of the alkaline solution is 80-95 ℃, and the pH value of the alkaline solution is 13-14; after washing, washing the gauze with normal-temperature water for 10-15min, wherein the normal temperature is 20-25 ℃; washing with water at normal temperature and dehydrating;
the liquid ammonia temperature in the liquid ammonia processing step is-33 ℃ to-30 ℃, the yarn cloth feeding rotating speed and each guide roller in the liquid ammonia processing step are at the same speed, and the speed is 30m/min to 40m/min; the alkaline solution in the loose alkaline washing step is a sodium hydroxide solution with a weight ratio of 2%.
2. The manufacturing method according to claim 1, wherein the cotton-wrapped alkali-soluble filament yarn is a 30S-40S cotton-wrapped alkali-soluble filament yarn.
3. The method of manufacturing of claim 1, further comprising:
wet cloth shaping: and (3) shaping the gauze subjected to dehydration treatment in the loose alkali washing step so as to improve the dimensional stability of the gauze.
4. The method of claim 3, wherein a softening agent is added in the wet-cloth setting step; the softening agent is 5g/l-10g/l.
5. The manufacturing method according to claim 1, further comprising a dyeing step and/or a printing step after the dehydration drying step and before the liquid ammonia treatment step; dyeing the gauze before the liquid ammonia treatment step by using a dyeing agent in the dyeing step; in the printing step, printing treatment is carried out on the gauze before the liquid ammonia treatment step; and the liquid ammonia treatment step is used for carrying out liquid ammonia treatment on the gauze subjected to the dyeing step and/or the printing step.
6. The method of claim 1, wherein the loose water wash step comprises subjecting the gauze to an enzymatic wash having a desizing enzyme and a refining penetrant, the desizing enzyme being enzyme water, and the hot wash temperature being from 80 ℃ to 90 ℃.
7. A natural elastic pure cotton gauze, which is manufactured by the manufacturing method of any one of claims 1 to 6.
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| FR1449345A (en) * | 1965-10-06 | 1966-03-18 | Schipat Ag | Stretchable cotton yarn and method of making this yarn |
| US4345908A (en) * | 1979-11-28 | 1982-08-24 | Joshua L. Baily & Co., Inc. | Stretchable woven cellulosic fabric and process for making same |
| JPH11286871A (en) * | 1998-03-31 | 1999-10-19 | Nisshinbo Ind Inc | Production of stretchable cellulosic fiber yarn |
| JP3491552B2 (en) * | 1999-02-25 | 2004-01-26 | 日清紡績株式会社 | Method for producing stretch woven or knitted fabric comprising cellulosic fibers |
| JP2001303433A (en) * | 2000-04-27 | 2001-10-31 | Toyobo Co Ltd | Spun yarn and yarn structure containing cotton fiber |
| CN101210360A (en) * | 2006-12-31 | 2008-07-02 | 鲁泰纺织股份有限公司 | Ordering method for pure cotton fabric weftwise elasticity |
| CN103437024B (en) * | 2013-08-01 | 2015-01-14 | 深圳全棉时代科技有限公司 | Method for manufacturing all cotton natural elastic fabrics |
| CN108950818A (en) * | 2018-06-22 | 2018-12-07 | 东华大学 | A kind of production method of cotton core elasticity fabric |
| CN210002001U (en) * | 2019-02-26 | 2020-01-31 | 深圳全棉时代科技有限公司 | pure cotton woven elastic fabric |
| CN111364146B (en) * | 2020-03-16 | 2021-09-10 | 广东溢达纺织有限公司 | Warp-wise elastic woven fabric and preparation method thereof |
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