JP2003306847A - Chitosan woven fabric and method for making chitosan fiber - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chitosan woven fabric which well maintains the potency of chitosan, and to provide a method for easily making chitosan fibers used for making the chitosan woven fabric. <P>SOLUTION: This chitosan woven fabric is obtained by weaving yarns formed from wool-like chitosan fibers alone or weaving the mixture of the yarns with yarns formed from other fibers. The chitosan woven fabric is obtained by weaving yarns which are formed by blending the wool-like chitosan fibers with other wool-like fibers. And, the method for making the chitosan fibers comprises breaking continuous linear bodies formed by extruding a chitosan solution into a solidifying solution with ultrasonic wave vibrations in the solidifying solution. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a fabric made of chitosan.

[0002]

2. Description of the Related Art Recently, the effect of chitosan obtained from the chitin of the shell of a crab has become widely known in various fields, and chitosan has also been used in fields such as clothing. That is, it is intended to improve the antibacterial, antifungal, insecticidal, and deodorant properties of clothing by adding chitosan to the clothing and the like.

[0003]

However, the addition of chitosan to clothing currently performed is performed, for example, by immersing the clothing in a chitosan solution, so that the chitosan of the clothing may fall off by washing. However, there is a problem that various effects of the above chitosan are not maintained well. For example, most of chitosan will run off after washing about 3 times, and if dipping is repeated to prevent the run off and chitosan is added, the surface of the garment will be hardened and the design of the garment will be impaired, or the skin will not feel smooth. Occurs. As an addition method other than dipping, it is possible to apply by spraying in a heated state, but in that case, chitosan deteriorates due to high heat, and good effects cannot be expected, which is feared.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a chitosan fabric body which is made of chitosan fiber itself and in which the effect of chitosan can be maintained well.

Furthermore, the present invention provides a method for easily producing chitosan fibers used for producing a chitosan fabric.

[0006]

DISCLOSURE OF THE INVENTION In the present invention, a chitosan obtained by weaving a thread formed from cotton-like chitosan fibers alone or mixed with a thread formed from other fibers and woven Provide a woven body. There is also provided a chitosan woven material obtained by weaving a thread formed from a mixture of cotton-like chitosan fibers and other cotton-like fibers.

Other fibers used in the above are:
Examples include natural fibers such as silk, cotton, hemp, and wool, as well as chemical fibers such as nylon, tetron, and acrylic. The manufacturing method is appropriately selected according to the mixed fibers used. The mixing ratio of the other fibers is 30 to 75%.

The above-mentioned chitosan fabric of the present invention has an excellent antibacterial, antifungal, insect repellent, and deodorant property, even after washing, as compared with the conventional fabric to which chitosan is added by some method. Was done. The woven fabric obtained according to the present invention is suitably used not only for various kinds of clothing but also for interior decoration such as rugs, curtains and cloths for wall materials. Especially when it is used for interior decoration, the indoor hygiene environment is improved and a comfortable living space can be obtained.

Further, according to the present invention, a continuous linear body formed by discharging a chitosan solution into a solidifying solution is
Provided is a method for producing chitosan fiber, which comprises cutting the solidified solution by ultrasonic vibration to produce chitosan fiber.

By cutting with ultrasonic vibration in the immobilizing solution, the cutting can be performed easily with a simple structure.
It is possible to omit the use of a separate cutting machine, simplify the manufacturing apparatus, and significantly reduce the manufacturing cost.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a manufacturing process of chitosan fiber. 1 is a chitosan solution supply tank, 2 is a chitosan fiber solid tank, 3 is a cleaning tank, 4 is a dryer, 9
Is an accumulation part of chitosan fiber. A solution supply pipe 5 extends from the supply tank 1 for storing the chitosan solution 7,
The nozzle 6 portion at the tip is connected to the side surface of the solid-state tank 2. An ultrasonic vibration generator 8 is provided in the lower portion of the solid tank 2 near the nozzle 6 connection portion. The solid tank 2 is filled with an acid solution 10 for solid chitosan, and the acid solution 10 is made to flow in the arrow direction by a pump (not shown). Reference numeral 12 is a first conveyor for taking out chitosan fibers.

The cleaning tank 3 is filled with a cleaning liquid 14 for cleaning the acid solution 10 attached to the chitosan fiber, and the cleaning liquid 14 is made to flow in the direction of the arrow by a pump (not shown). Reference numeral 16 is a second conveyor for taking out the chitosan fiber. A heater 17 is provided in the lower part of the dryer 4, and a third conveyor 18 for carrying during drying is provided in the upper part. The third conveyor 18 has one end corresponding to the second conveyor 16 at a position projecting from one side of the dryer 4, the other end projecting from the other side, and a stacking section 9 provided below the third conveyor 18.

Next, the manufacturing process of chitosan fiber in the above apparatus will be described. When the chitosan solution from the inside of the supply tank 1 is discharged into the solid tank 2 by the nozzle 6, it is solidified by the action of the acid solution 10 to form the continuous linear body R. Then, the continuous linear body R is cut by the low-frequency ultrasonic vibration transmitted from the ultrasonic vibration generator 8 through the acid solution 10. Thus, for example, a random chitosan fiber K having a thickness of 2 decimel and a length of 2 to 5 mm is prepared. The large number of cut and produced chitosan fibers K flow in the solid-state tank 2 to the downstream side, where they are received by one end side of the first conveyor 12 and taken out from the solid-state tank 2.

Then, the chitosan fiber K conveyed to the first conveyor 12 is dropped into the cleaning tank 3 from the other end side. The chitosan fiber K from which the acid adhering to the surface of the cleaning tank 3 has been removed is flown downstream in the cleaning tank 2, where it is received at one end of the second conveyor 16 and taken out of the cleaning tank 3. . The chitosan fiber K conveyed by the second conveyor 16 is dropped from the other end side of the second conveyor 16, received by the one end side of the third conveyor 18, and introduced into the dryer 4. Chitosan fiber K is the third conveyor 18
It is dried by the heat from the heater 17 when it is transported by
The other end of the third conveyor 18 is dropped into the stacking unit 9 to be stacked. A fan 20 is provided above the inside of the inlet of the stacking unit 9, and the operation of the fan 20 allows the chitosan fibers K on the third conveyor 18 to efficiently fall and collect in the stacking unit 9.

The chitosan fabric using the chitosan fiber K obtained as described above will be described below. The first chitosan woven fabric is obtained by, for example, making the chitosan fiber obtained as described above into a cotton shape by a cotton spinning machine, then making this cotton-like chitosan fiber into a thread by a spinning machine, and then using this thread alone. ,
Alternatively, it can be obtained by mixing with a thread of other fiber and weaving with a loom.
The second chitosan fabric is obtained by mixing the chitosan fiber obtained as described above with a cotton-like fiber and another cotton-like fiber, and weaving the mixed fiber. Get

As the first woven body, one having a mixing ratio of chitosan fiber (35%) and wool fiber (65%) is used.
As a result of performing a washing test on each of the woven fabrics having a mixing ratio of chitosan fiber (35%) and acrylic (65%), the woven fabrics are protected against germs and chitosan even after 10 times of washing. Mold, insect repellent and deodorant properties were fully exhibited.

[0017]

According to the present invention, it becomes possible to obtain a chitosan woven material in which the antibacterial, antifungal, insecticidal and deodorant properties of chitosan are maintained well even after washing. Also,
According to this invention, cutting can be easily performed with a simple structure,
Since it is possible to omit the use of a cutting machine separately, the manufacturing apparatus is simplified, and it is possible to significantly reduce the manufacturing cost when manufacturing the chitosan fiber.

[Brief description of drawings]

FIG. 1 is an explanatory view of a manufacturing process of the present invention.

[Explanation of symbols]

1 Chitosan solution supply tank 2 Solid tank for chitosan fiber 3 cleaning tank 4 dryer 8 Ultrasonic vibration generator 9 Chitosan fiber accumulation area

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[Procedure amendment]

[Submission date] June 25, 2002 (2002.6.2)
5)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction content]

Next, the manufacturing process of chitosan fiber in the above apparatus will be described. When the chitosan solution from the inside of the supply tank 1 is discharged into the tank for solidification 2 by the nozzle 6, it is solidified by the action of the alkaline solution 10 and becomes a continuous linear R.
Then, the continuous linear body R is an ultrasonic vibration generator or
It is cut by low-frequency ultrasonic vibration transmitted from the laser beam 8 or the like through the alkaline solution 10 or by a laser beam or the like. In this way, for example, a random chitosan fiber K having a thickness of 2 decimel and a length of about 2 cm to 5 cm is prepared. A large number of cut and produced chitosan fibers K flow in the solid-state tank to the downstream side, where they are received by one end side of the first conveyor 12 and taken out from the solid-state tank 2.

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Claims (3)

[Claims] 1. A chitosan woven material obtained by weaving a thread formed of cotton-like chitosan fibers alone or by mixing with a thread formed of other fibers. 2. A chitosan fabric body obtained by weaving a thread formed from a mixture of cotton-like chitosan fibers and other cotton-like fibers. 3. A chitosan fiber is obtained by cutting a continuous linear body formed by discharging a chitosan solution into a solidification solution by ultrasonic vibration in the solidification solution. How to make fibers.