1. The utility model provides an organic cotton chitosan fiber mixed yarn knitted fabric, includes surface fabric body (1), its characterized in that: the fabric body (1) is knitted by organic cotton fiber and chitosan fiber blended yarn, a protective layer (2) for protection is arranged on the surface of the fabric body (1), and the protective layer (2) is sequentially provided with an antibacterial layer (201) and a wear-resistant layer (202) from inside to outside.

2. The organic cotton chitosan fiber blended yarn knitted fabric according to claim 1, which is characterized in that: the thickness of the antibacterial layer (201) is 0.2-0.8 mm.

3. The organic cotton chitosan fiber blended yarn knitted fabric according to claim 1, which is characterized in that: the wear-resistant layer (202) is composed of polytetrafluoroethylene and graphite.

4. The method for preparing the organic cotton chitosan fiber blended yarn knitted fabric according to any one of claims 1 to 3, characterized in that: the method comprises the following steps:

s1: a yarn production process: taking organic cotton fiber and chitosan fiber as raw materials, blending the raw materials by mass ratio of 20% of chitosan fiber to 80% of organic cotton fiber, and spinning by adopting an air-jet vortex spinning technology; setting spinning parameters: the air pressure of a nozzle is 0.53MPa, the spinning speed is 440m/min, the feeding ratio is 0.96, the specification of a condenser is 6mm, and the tension of a friction roller is 180 cN; setting an electronic yarn clearer: neps + 180%, short nubs + 160% x 2cm, long nubs + 45% x 35 cm;

s2: the production process of the fabric comprises the following steps: the blended yarn → inverted tube → woven piece → looping → flat car → hand sewing → water washing → drying → antibacterial coating → wear-resisting coating → ironing → packaging → warehousing.

5. The method for preparing the organic cotton chitosan fiber blended yarn knitted fabric according to claim 4, wherein the method comprises the following steps: the yarn production process of the step S1 comprises the following steps: and (3) chitosan fiber roving: plucking → mixing → picking → carding → drawing → roving; organic cotton fiber roving: plucking → mixing → picking → carding → pre-drawing → sliver-lap → combing → drawing → roving; chitosan/organic cotton blended yarn: chitosan fiber roving/cotton fiber roving → spun yarn → spooling.

6. The method for preparing the organic cotton chitosan fiber blended yarn knitted fabric according to claim 4, wherein the method comprises the following steps: the step S2 fabric production process comprises the following steps: the method comprises the following steps of (1) knitting by feeding 32S blended yarn on a computerized flat knitting machine in a double-strand mode, wherein fabric tissue is a single-side flat knitting; transverse density: 75/10 cm; longitudinal density: 44.9/10 cm; needle number: 12G; gram weight: 134 grams per square meter.

7. The method for preparing the organic cotton chitosan fiber blended yarn knitted fabric according to claim 4, wherein the method comprises the following steps: the machine table configuration in the yarn production process is as follows: and (3) chitosan roving: A002A type plucker → A006B type multi-bin cotton mixer → A036C type opener → FA201B type carding machine → JWF1310 head and → FA306 two and → FA326 three and → FA458 type roving frame; organic cotton fiber roving: A002D plucker → A035 opener → FA125 weight separator → FA029 multi-chamber cotton blender → FA203A carding machine → FA306 pre-merge → E32 lap-lap combination → E62 comber → JWF1310 head merge → FA306 second merge → FA326 triple merge → FA458 roving machine; chitosan/organic cotton blended yarn: two-channel differential drafting ring spinner → NO21C type winder.

8. The method for preparing the organic cotton chitosan fiber blended yarn knitted fabric according to claim 4, wherein the method comprises the following steps: the antibacterial film in the step S2 is obtained by soaking the fabric in an antibacterial solution for 30min, wherein the antibacterial solution is formed by mixing ethanol, deacetylated chitin and a cross-linking agent.

9. The method for preparing the organic cotton chitosan fiber blended yarn knitted fabric according to claim 4, wherein the method comprises the following steps: in the step S2, the wear-resistant film is obtained by soaking the fabric in a solution containing polytetrafluoroethylene and graphite for 25min, and then washing and drying the fabric.

Background

The organic cotton is mainly cultivated and managed by natural farming for biological prevention and control of plant diseases and insect pests by organic fertilizers, chemical products are not used, and all natural pollution-free production is carried out from seeds to agricultural products. Chitosan is also called chitin, chitosan, deacylated chitin, soluble chitin and soluble chitin. Chitosan is the second most abundant biopolymer in nature next to cellulose, and is widely distributed, mainly in the hulls of many lower animals, especially arthropods such as shrimps, crabs, insects, etc., and also in the cell walls of lower plants such as fungi and algae. Because the chitosan fiber has excellent hygroscopicity, the clothes spun by the chitosan fiber are comfortable, soft and friendly, do not have the feeling of hot adhesion, do not irritate the skin, have good antibacterial and deodorizing functions, and can play a role in maintaining and nursing the skin.

At present, the knitting surface fabric of mixed yarn among the prior art does not have antibiotic function, breeds the bacterium easily, and the moisture absorption performance is not good, and the knitting surface fabric of mixed yarn among the prior art's wear resistance is not good simultaneously, appears the phenomenon of pilling easily, reduces life.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides an organic cotton chitosan fiber blended yarn knitted fabric and a preparation method thereof, and solves the problems of poor antibacterial property and poor wear resistance of the blended knitted fabric in the prior art.

The second technical proposal.

The invention specifically adopts the following technical scheme for realizing the purpose:

the organic cotton and chitosan fiber blended yarn knitted fabric comprises a fabric body, wherein the fabric body is knitted by organic cotton fibers and chitosan fiber blended yarns, a protective layer for protection is arranged on the surface of the fabric body, and the protective layer is sequentially provided with an antibacterial layer and a wear-resistant layer from inside to outside.

Further, the thickness of the antibacterial layer is 0.2-0.8 mm.

Further, the wear-resistant layer is composed of polytetrafluoroethylene and graphite.

The invention also provides a preparation method of the organic cotton chitosan fiber blended yarn knitted fabric, which comprises the following steps:

s1: a yarn production process: taking organic cotton fiber and chitosan fiber as raw materials, blending the raw materials by mass ratio of 20% of chitosan fiber to 80% of organic cotton fiber, and spinning by adopting an air-jet vortex spinning technology; setting spinning parameters: the air pressure of a nozzle is 0.53MPa, the spinning speed is 440m/min, the feeding ratio is 0.96, the specification of a condenser is 6mm, and the tension of a friction roller is 180 cN; setting an electronic yarn clearer: neps + 180%, short nubs + 160% x 2cm, long nubs + 45% x 35 cm;

s2: the production process of the fabric comprises the following steps: the blended yarn → inverted tube → woven piece → looping → flat car → hand sewing → water washing → drying → antibacterial coating → wear-resisting coating → ironing → packaging → warehousing.

Further, the yarn production process of step S1 includes: and (3) chitosan fiber roving: plucking → mixing → picking → carding → drawing → roving; organic cotton fiber roving: plucking → mixing → picking → carding → pre-drawing → sliver-lap → combing → drawing → roving; chitosan/organic cotton blended yarn: chitosan fiber roving/cotton fiber roving → spun yarn → spooling.

Further, the step S2 is a fabric production process: the method comprises the following steps of (1) knitting by feeding 32S blended yarn on a computerized flat knitting machine in a double-strand mode, wherein fabric tissue is a single-side flat knitting; transverse density: 75/10 cm; longitudinal density: 44.9/10 cm; needle number: 12G; gram weight: 134 grams per square meter.

Further, the machine configuration in the yarn production process is as follows: and (3) chitosan roving: A002A type plucker → A006B type multi-bin cotton mixer → A036C type opener → FA201B type carding machine → JWF1310 head and → FA306 two and → FA326 three and → FA458 type roving frame; organic cotton fiber roving: A002D plucker → A035 opener → FA125 weight separator → FA029 multi-chamber cotton blender → FA203A carding machine → FA306 pre-merge → E32 lap-lap combination → E62 comber → JWF1310 head merge → FA306 second merge → FA326 triple merge → FA458 roving machine; chitosan/organic cotton blended yarn: two-channel differential drafting ring spinner → NO21C type winder.

Further, the antibacterial coating in step S2 is prepared by soaking the fabric in an antibacterial solution for 30min, wherein the antibacterial solution is prepared by mixing ethanol, chitosan and a cross-linking agent.

Further, in the step S2, the wear-resistant coating is to soak the fabric in a solution containing polytetrafluoroethylene and graphite for 25min, and then to wash and dry the fabric.

(III) advantageous effects

Compared with the prior art, the invention provides the organic cotton chitosan fiber blended yarn knitted fabric and the preparation method thereof, and the organic cotton chitosan fiber blended yarn knitted fabric has the following beneficial effects:

1. according to the invention, by knitting the chitosan fiber and organic cotton fiber blended yarn, the fabric has good antibacterial performance, the antibacterial rate is very high, more than 90% of common bacteria can not survive on the chitosan fiber, the moisture absorption and air permeability are good, the fabric is more skin-friendly, no stimulation is generated to the skin, and the fabric is suitable for being used as infant clothes and high-grade underwear for men and women.

2. According to the invention, the organic cotton surface fiber and the chitosan fiber can be covered with chitosan through the antibacterial layer, so that the antibacterial performance of the fabric can be further improved, the breeding of bacteria is avoided, the tensile strength, tearing strength and wear resistance of the fabric are obviously improved through the wear-resistant layer, the wearing comfort of the fabric is enhanced, and the service life of the fabric is prolonged.

Drawings

FIG. 1 is a schematic structural view of a fabric of the present invention;

fig. 2 is a schematic structural diagram of a protective layer according to the present invention.

In the figure: 1. a fabric body; 2. a protective layer; 201. an antimicrobial layer; 202. and a wear-resistant layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

As shown in fig. 1 and fig. 2, an organic cotton and chitosan fiber blended yarn knitted fabric provided by an embodiment of the present invention includes a fabric body 1, the fabric body 1 is knitted by organic cotton fiber and chitosan fiber blended yarn, a protective layer 2 for protection is disposed on the surface of the fabric body 1, and the protective layer 2 is an antibacterial layer 201 and a wear-resistant layer 202 in sequence from inside to outside; the surface fabric of making through knitting organic cotton fiber and chitosan fiber mixed yarn has excellent antibacterial property, avoid breeding of bacterium, it is good to pass through sweat nature, sweat and little sweat on the absorption human skin, it is normal to make the body temperature resume rapidly, really reach ventilative, the sweat-absorbing effect, compatible skin simultaneously, it is amazing to skin, can further protect the surface fabric through inoxidizing coating 2, the life of surface fabric is prolonged, thereby the surface covering that can make the surface fabric through antibiotic layer 201 has chitosan and can further strengthen antibiotic effect, conveniently store, can improve the wear resistance of surface fabric through wearing layer 202, the phenomenon of the difficult appearance balling-up of surface fabric, show the life who improves the surface fabric.

As shown in fig. 2, in the present embodiment, the thickness of the antibiotic layer 201 is 0.2 to 0.8 mm; the antibacterial layer 201 can enable the organic cotton fibers and the formed surface of the fabric to form a chitosan antibacterial film, so that the antibacterial performance of the fabric can be further improved, the breeding of bacteria is avoided, and the fabric is more comfortable and breathable and has good sweat permeability.

As shown in fig. 2, in the present embodiment, the wear resistant layer 202 is composed of polytetrafluoroethylene and graphite; the tensile strength, the tearing strength and the wear resistance of the fabric can be obviously improved through the wear-resistant layer 202, and the service life of the fabric is prolonged.

The invention also provides a preparation method of the organic cotton chitosan fiber blended yarn knitted fabric, which comprises the following steps:

s1: a yarn production process: taking organic cotton fiber and chitosan fiber as raw materials, blending the raw materials by mass ratio of 20% of chitosan fiber to 80% of organic cotton fiber, and spinning by adopting an air-jet vortex spinning technology; setting spinning parameters: the air pressure of a nozzle is 0.53MPa, the spinning speed is 440m/min, the feeding ratio is 0.96, the specification of a condenser is 6mm, and the tension of a friction roller is 180 cN; setting an electronic yarn clearer: neps + 180%, short nubs + 160% x 2cm, long nubs + 45% x 35 cm;

s2: the production process of the fabric comprises the following steps: the blended yarn → inverted tube → woven piece → looping → flat car → hand sewing → water washing → drying → antibacterial coating → wear-resisting coating → ironing → packaging → warehousing.

In this embodiment, the yarn production process of step S1 includes: and (3) chitosan fiber roving: plucking → mixing → picking → carding → drawing → roving; organic cotton fiber roving: plucking → mixing → picking → carding → pre-drawing → sliver-lap → combing → drawing → roving; chitosan/organic cotton blended yarn: chitosan fiber roving/cotton fiber roving → spun yarn → spooling.

In this embodiment, the step S2 fabric production process: the method comprises the following steps of (1) knitting by feeding 32S blended yarn on a computerized flat knitting machine in a double-strand mode, wherein fabric tissue is a single-side flat knitting; transverse density: 75/10 cm; longitudinal density: 44.9/10 cm; needle number: 12G; gram weight: 134 grams per square meter.

In this embodiment, the machine table in the yarn production process is configured as follows: and (3) chitosan roving: A002A type plucker → A006B type multi-bin cotton mixer → A036C type opener → FA201B type carding machine → JWF1310 head and → FA306 two and → FA326 three and → FA458 type roving frame; organic cotton fiber roving: A002D plucker → A035 opener → FA125 weight separator → FA029 multi-chamber cotton blender → FA203A carding machine → FA306 pre-merge → E32 lap-lap combination → E62 comber → JWF1310 head merge → FA306 second merge → FA326 triple merge → FA458 roving machine; chitosan/organic cotton blended yarn: two-channel differential drafting ring spinner → NO21C type winder.

In this embodiment, the antibacterial coating in step S2 is prepared by soaking the fabric in an antibacterial solution for 30min, wherein the antibacterial solution is prepared by mixing ethanol, chitosan and a cross-linking agent; adding 2g of deacetylated chitin into 150ml of ethanol for ultrasonic treatment, adding 5g of cross-linking agent, immersing the fabric into the solution, heating to 80 ℃, reacting for 6 hours, and washing and drying to obtain the chitosan/chitosan composite fabric.

In the embodiment, in the step S2, the wear-resistant coating is obtained by soaking the fabric in a solution containing polytetrafluoroethylene and graphite for 25min, and then washing and drying; the wear-resistant layer 202 made of polytetrafluoroethylene and graphite enables the made fabric to have very good wear resistance, excellent tensile strength and tear strength, and excellent wear resistance after being washed for many times, so that the phenomenon of pilling is not easy to occur, and the service life is longer.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.