KR102026254B1 - Method for Removing Pectin from Linen Fiber - Google Patents

Abstract

The present invention relates to a method for removing a pectin component contained in a linen flax by applying a physical hit to the linen flax in a process of manufacturing a sliver with fineness and fiber length adjusted by drafting the flax of linen fibers. In the linen fibers manufactured by the method of the present invention, the pectin is removed by physical methods to separate linen fibers attached to each other, the fineness is reduced to lower the friction between fibers, so the spinning quality and process efficiency in a spinning process is increased. Compared to chemical and biological pectin removal methods, linen fibers are less damaged and pectin removal is uniform. In addition to excellent pectin removal efficiency, the linen fibers can be spun in a dry method, thereby being easily blended with various fiber materials.

Description

Method for Removing Pectin from Linen Fiber

The present invention in the process of producing a sliver with fineness and fiber length is adjusted by drafting the flax of linen fibers, the linen by applying a physical blow to the linen flax It relates to a method for removing the pectin component contained in the flex.

Linen fiber is a kind of hemp fiber, and hemp fiber has 20 kinds such as linen, ramie, hemp and jute, but flax and germ are mainly used for clothing.

Flax fiber is usually collected from annual stems, and then the stem fiber raw material is called a flax, and after the yarn, textile and knitted products are called linen, and the fiber length is 1-5 cm shorter than ramie and the thickness is about 2 denier ( It is thin enough to be denier, soft to the touch, high in strength, less white than ramie, and has the advantages of hygroscopicity, divergence, breathability, and wrinkles.

Typical hemp fiber spinning processes include retting, grinding / scutching, hackling / combing, drawing, roving, processing or boiling, wet spinning. (wet spinning), drying (winding), winding (winding) process is carried out, the thickness of the linen yarn produced at this time is 14 ~ 60 LEA (8.5 ~ 36.3 Nm) and relative to the fiber yarn used for summer clothing Coarse thread is produced.

In addition, most of the spun yarn using flax, which is a raw material, is manufactured by a wet spinning process. The water content of the linen roving yarn used is about 250-300%. There is a problem that it is difficult to manufacture a blend of materials and the like.

Currently, in the wet spinning process of linen fibers, flax fiber is manufactured by sliver or roving, and then pectin, impurities, and pigments are removed in the refining and bleaching process, and then spun by wet spinning process. This results in a problem that the raw material itself is difficult to spun and the spinning through the wet spinning process.

In addition, the raw material contains about 20% or more of pectin and other impurities, and the pectin quality interferes with the opening process during the spinning process, which impedes the spinning process. Pectin is a kind of gum, so it is difficult to remove in normal processes.

Therefore, in order to manufacture linen fiber products that meet the various demands of the market, it is necessary to improve the process that enables the spinning of flax raw material from wet spinning method to dry spinning method, which is the current problem. There is a need for a method for efficiently removing pectin components.

In this way, Korean Laid-Open Patent Publication No. 2014-0062642 discloses a method for refining bast fiber, and the bast fiber which has been stripped and peeled is dipped in sodium hydroxide, sodium hypochlorite, sodium hypophosphite solution. After primary refining by heating at a temperature of 100 ~ 110 ℃ for 50 ~ 55 minutes, it is dehydrated, and then immersed in water, hydrogen peroxide, sodium hypochlorite solution and heated at 100 ~ 110 ℃ for 30 ~ 35 minutes. After secondary refining, a method of dehydration, washing and drying has been proposed.

The method can be used to remove the impurities such as pectin contained in the bast fiber by first refining the bast fiber in the refining agent for 50 to 55 minutes and secondary refining for 30 to 35 minutes, so that the bast fiber is immersed in the conventional 24 hours refining agent In order to solve the problem of damage, the refining method using the strong alkaline chemicals does not completely remove the pectin, affects the intrinsic properties of the bast fiber and causes pollution problems due to the discharge of chemical wastewater.

In addition, Korean Patent Publication No. 0786717 discloses hemp bast fibers immersed in a symbiotic microbial culture medium and stirred for 24 to 36 hours while intermittently supplying oxygen at 25 to 30 ° C., whereby the symbiotic microorganisms use pectin of hemp bast fiber as food. A method of refining to remove pectin from hemp bast fibers has been proposed.

While the refining method does not use chemicals, it does not inhibit the inherent properties of hemp bast fiber, while non-uniformity of bacteria and contamination of microorganisms generated in the cultivation process of symbiotic microorganisms may be blocked in the laboratory, but the actual industrial It is difficult to guarantee practical refining results due to differences in temperature and the activity of the bacteria itself during biodegradation aging.

In addition, Korean Patent Publication No. 1488374 discloses the removal and killing of fungi contained in the bast fiber by ultrasonication, followed by enzymatic digestion with pectin lyase, followed by water and EDTA (ethylene-diamine-tetraacetic). A method of removing pectin, hemicellulose, and lignin contained in bast fibers by adding secondary acid and irradiating with ultrasonic waves has been proposed.

The secondary refining consists of adding water and EDTA to the first refined bast fiber, irradiating with ultrasonic waves, changing the water, and mixing sodium hydroxide to irradiate the ultrasonic waves again, adding hydrogen peroxide to the ultrasonic waves and irradiating the ultrasonic waves again. .

In the present invention, pectinase decomposes the pectin molecule of the bast fiber and dissolves in water to remove pectin connecting cellulose, so that spinning is possible in a dry spinning manner, but it is contained in the fiber by using a combination of pectinase, chemicals, and ultrasonic waves. Soluble cellulose, hemicellulose, etc. are dissolved and cross-linkage between fibers and glucose, which is a member of fiber, weakens the fiber and breaks it short. There is a problem that can not be spun.

The present invention is to solve the above problems, linen fiber that allows the yarn to be manufactured in a dry spinning method that can be mixed and mixed with fine fiber through the fineness and fiber length control while removing the pectin flax raw material physically It is to provide a method for removing pectin.

In order to solve the above problems, the present invention comprises the steps of putting a linen flex 2 to 5 strands of fineness 20 ~ 25 ㎛, linear density 15 ~ 20 g / m, fiber length 160 ~ 220 mm into the linen splitting apparatus; A bitting step of dropping pectin contained in the linen flaps by applying a physical blow to the linen flaps introduced into the linen splitting apparatus; And drafting 2 to 5 stranded linen flaps from which the pectin was dropped to prepare 1 linen sliver having a fineness of 17 to 22 μm, a linear density of 30 to 40 g / m, and a fiber length of 120 to 160 mm. The beating step includes a pair of frames 31 spaced apart from each other, an eccentric shaft 32 rotatably disposed across the pair of frames, and one end of the eccentric shaft 32 to transmit rotational force. Motor 33, the upper end is rotatably connected to the middle of the eccentric shaft 32, the crank shaft 34 to reciprocate up and down, the piston 35 mounted to the lower end of the crank shaft 34, the The crankshaft is mounted on the striking plate 36 and the pair of frames 31 which are installed at the lower portion of the piston 35 and periodically collide with the piston 35 to support the side of the crankshaft 34. Beater device comprising guide 37 for reciprocating 34 up and down direction It provides a pectin removal method of linen fibers, characterized in that carried out by.

At this time, the linen splitting device is provided with 8 to 12 pairs of rollers for conveying the linen flex, the distance between the rollers is 40 ~ 60 mm, the draft ratio between each roller is 1: 1.01 ~ 1.15 and the overall draft ratio is 1: 1.1 ~ It is preferable that it is 2.5, and it is more preferable that the said roller is uneven | corrugated by embossing shape of the convex surface.

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In addition, in the beating step, the linen flex is hit 2 to 4 times in a row and the blow plate 36 is formed with a discharge groove 41 in the center, the discharge groove 41 is in the linen flex 10 of the traveling direction It is more preferably arranged in a long and narrow shape in the perpendicular direction and vertically penetrates the blow plate 36, the upper inlet of the discharge groove 41 is made of a shape in which the linen flex inlet side edge 42 is chamfered, The discharge grooves 41 are most preferably formed in the same number as the number of continuous blows of the linen flex or one less than the number of continuous blows.

In addition, it is preferable to pass the prepared linen sliver through the crimping device 50 to form 100 to 120 crimps per linen sliver meter.

The linen fibers prepared by the method of the present invention are physically removed by pectin to separate flax fibers attached to each other, and the fineness decreases the friction between fibers, so that the spinning quality and process efficiency are increased in the spinning process. Compared to the biological pectin removal method, there is less damage to linen fibers, uniform pectin removal and excellent pectin removal efficiency, and the linen fibers can be dry spun and thus can be easily mixed with various fiber materials.

In addition, it is possible to immediately remove the pectin that has fallen from the linen flap by striking to prevent it from reattaching to the linen flap by continuous striking. In addition, by forming a crimp on the manufactured linen sliver to increase the composition of the fiber can be carried out a stable drying process of the linen fiber.

1 is a schematic diagram of a linen dispenser according to the present invention.
It is a schematic diagram of a beater apparatus which strikes a linen flax.
3 is a view showing a blow plate of the beater device according to an embodiment of the present invention.
4 is a photograph showing a state in which the linen dispenser according to the present invention is operated.
Figure 5 is a photograph showing a change in the fiber length of the linen fibers treated in the linen splitting apparatus of the present invention.

The present invention is to physically disperse and drift the liner flax of the sliver form through the process of dipping, lining, hackling, etc. to prepare a sliver capable of dry spinning, for this purpose, the pectin contained in the linen flax It can be removed to facilitate the division.

Hereinafter, the present invention will be described in detail with reference to FIG. 1.

1 schematically shows a state of a linen splitting device having a fineness and a fiber length adjusting function of a linen sliver.

The linen splitting device is divided into an inlet section 20, a beating section 30 and a draft section 40, each roller is provided with a roller (21), the distance between the rollers 40 ~ 60 It is preferably composed of 8 to 12 pairs of rollers having a mm and a draft ratio between the rollers of 1: 1.01 to 1.15, and the overall draft ratio is controlled to be in the range of 1: 1.1 to 2.5.

The linen flax 10 put into the linen splitting device contains pectin of flax fiber, thus preventing the open islet during the spinning process, and thus a process of removing it is required. When pectin is removed, flax fibers separated from each other are separated. The thinning effect is shown, and the friction between fibers decreases during the spinning process, resulting in an increase in spinning quality and process efficiency.

To this end, the linen splitting device is operated at a roller speed of 3 to 6 m / min, and the linen splitting machine is made with 2 to 5 strands of linen flex having a fineness of 20 to 25 μm, a linear density of 15 to 20 g / m, and a fiber length of 160 to 220 mm. 1 linen sliver having a fineness of 17-22 µm, a linear density of 30-40 g / m, and a fiber length of 120-160 mm was added to the apparatus, and the pectin was removed from the flax fiber with the change of the fiber length.

If the length of the linen flax introduced into the linen splitting device is less than 160 mm, a linen sliver of less than 120 mm is manufactured, and in later spinning processes, the spinning efficiency is lowered and the yarn is severely trimmed, and if it exceeds 220 mm, 160 mm Excessive linen slivers are produced, which causes a problem that the fibers are wound around the roller during the spinning process.

In addition, in order to increase the removal of the pectin, by setting the beating section 30 that strikes 120 to 180 times per minute in the middle of passing the linen fibers through the linen splitting apparatus, the splitting effect of the linen fibers is increased.

The biting section 30 is composed of a beater device that induces physical dropout of the pectin by applying a blow to the linen flax, and the motion of the beater is a power transmission method for converting the rotational motion of the motor into a reciprocating motion. Physical impact.

As shown in FIG. 2, the beater includes a pair of frames 31 spaced apart from each other, an eccentric shaft 32 rotatably disposed across the pair of frames, and one end of the eccentric shaft 32. A motor 33 connected to the motor 33 to transmit rotational force, an upper end of which is rotatably connected to the middle of the eccentric shaft 32, and a crank shaft 34 reciprocating up and down, and a piston 35 mounted to a lower end of the crank shaft. Crank shaft 34 is mounted on the striking plate 36 and the pair of frames 31 which are installed at the lower part of the piston and periodically collide with the piston to support the side of the crank shaft 34. It includes a guide 37 for reciprocating in the vertical direction.

Alternatively, the beater may convert the rotational motion of the motor into a reciprocating motion of the piston through a crank-slider structure, a rotational shaft that is rotated by receiving the rotational force of the motor, and one side of which is connected to the rotational shaft. The first crankshaft rotates to the center, one side is rotatably connected to the other side of the first crankshaft by the crank pin, so that one side is circular along the circular trajectory when the first crankshaft rotates, and the other side is a linear reciprocating motion. Also comprising a second crank shaft, a piston which is connected to the other side of the second crank shaft by a hinge pin and the piston reciprocating up and down in the cylinder and a blow plate installed in the lower portion of the piston and periodically impacts the piston Can be configured (not shown).

The surface in which the piston and the impact plate collide with each other has a plane shape, the piston may be made of stainless steel and the impact plate may be made of a silicon plate having a high hardness of 70 IRHD (International Rubber Hardness Degree) or more. The piston may be made of stainless steel, and a silicon plate of at least 70 IRHD and at least 15 mm thick may be coated on the metallic blow plate.

The silicon plate of the hardness to prevent the cutting of the linen fiber by absorbing the excessive impact by the piston while transmitting the striking force of the piston to the linen flap, passing the linen flap between the piston and the striking plate of the beater configured as described above Adjust the rotational speed of the motor and the eccentric length of the eccentric shaft or the length of the first and second crank shafts so that the linen flaps are hit two to four times in a row.

The linen flax drops the pectin contained in the linen flap from the linen fiber by the piston hit of the beater configured as described above, and the fallen pectin falls down the roller in the draft section 40 at the rear end of the beater.

However, the pectin, which is separated from the linen flux by the physical impact of the piston, is again attached to the linen flex due to the continuous stroke of the piston and is compressed by the roller of the draft section 40 and discharged from the linen splitting machine while attached to the linen sliver. As such, there is a need for additional removal of the pectin following continuous striking.

To this end, a groove for discharging the pectin is formed in the striking plate 36 while the linen flax 10 is hit by the upper surface of the striking plate 36, so that the linen flex before the additional striking the pectin away from the linen flax 10 is removed. It is preferable to remove in (10).

Referring to Figure 3 showing the discharge groove (top: side view, bottom: top view), the discharge groove 41 is formed in the center of the blow plate 36, the discharge groove 41 is the linen flex 10 proceeds It is arranged in a long and narrow form in the direction perpendicular to the direction and penetrates up and down the striking plate 36, the upper inlet of the discharge groove has a shape in which the linen flex inlet side edge 42 is chamfered (chamfering).

When the linen flax 10 passes through the striking plate configured as described above, the pectin 43 of the linen flax 10 is first dropped by the strike of the piston 35 and the first pectin 43 is separated from the linen flax 10. After moving forward along the surface of the chamfered edge 42 of the discharge groove 41 and then passing through the discharge groove 41 is discharged to the lower portion of the blow plate 36 is removed first, linen flex (10) ), The pectin 43 is secondarily removed by the continuous strike of the piston 35, and the secondary is removed in the same manner as described above.

3 shows two discharge grooves 41 formed, but one or a plurality of discharge grooves 41 can be installed as necessary, and the linen flex 10 is hit by installing the number of times that the linen flex 10 is continuously hit by the beater. It is preferable to remove the pectin 43 before the next hit, and after the last hit, it can be removed from the draft section 40 after exiting the beater as it is, so as to reduce the number of consecutive hits by one less than the discharge groove 41. May be formed.

In addition, the roller for conveying linen fibers (linen flax, linen sliver) is generally flat in shape and has a high frictional resistance so that linen fibers are cut by the surface friction generated between the linen fibers and the roller surface during the drafting of the linen fibers. Or the draft ratio is not controlled constantly.

In order to compensate for these disadvantages, it is desirable to reduce the surface friction between the linen fibers and the roller surface by roughening the surface of the roller into an embossed surface shape of a convex shape, thereby preventing cutting and producing a linen sliver of a certain quality. Can be.

In order to use the linen sliver manufactured as described above more stably in the dry spinning process, a crimping device 50 may be added to the rear end of the linen splitting device, and the linen sliver passing through the linen splitting device may be used. It is desirable to increase the cohesion of the fibers by finally passing through a crimping device to form 100-120 crimps per linen sliver meter.

Compared to the linen flex introduced into the linen splitting device, the linen sliver undergoes the above process, and has a fineness effect of 0.5 to 1.0 μm, and a crimp is formed. Pectin is removed from flax fiber raw material, and the composition is increased. Phosphorus mixing, doubling, gilling, defelting, drafting, combing, drawing, roving, spinning Various blended product configurations and stable manufacturing processes can be performed.

Hereinafter, the present invention will be described in more detail based on the following examples.

However, the following examples are only for illustrating the present invention, and the present invention is not limited to the following examples, and may be changed to other embodiments equivalent to substitutions and equivalents without departing from the technical spirit of the present invention. It will be apparent to those skilled in the art to which the present invention pertains.

<Example>

As shown in Fig. 1, the linen splitting device and the crimping device were connected to each other to construct a facility. The linen splitting device was equipped with 10 pairs of rollers, and the distance between adjacent rollers was 50 mm on average. The ratio was allowed to be controlled at 1: 1.37.

The linen splitting device is subjected to 150 blows per minute in the bitting section 30 through the inlet section 20 by inserting three strands of linen flex 10 around 21.25 μm, linear density 17.3 g / m, and fiber length 190 mm. After each strand of the linen flax 10 was hit twice by a beater device, three lines of the linen flax 10 were produced in the draft section 40 with one strand of linen sliver.

The finely divided linen slivers are manufactured with a fineness of 19.8 μm, a linear density of 33.3 g / m, and a fiber length of 140 mm, and are fed to a crimping device connected to the linen splitting device to give a crimp number of 113 pieces / m and a linear density of 35.2 g / m. Was prepared (see FIG. 4).

The above process is summarized in Table 1 below.

division Linen Splitting Device Crimping Device Input Discharge Discharge Device Fiber speed 3.65 m / min 5.00 m / min 5.00 m / min Draft bee 1.37 - Hit 150 times / min - Linen
fiber Fiber form Linen flax Bundling linen sliver Linen sliver Linen textile
Zoom in

- Number of strands 3 One One Island 21.25 μm 19.80 μm 19.80 μm Textile 190 mm 140 mm 140 mm Linear density 51.9 g / m (17.3 × 3) 33.3 g / m 35.2 g / m Hit Episode 2 - Crimp Number 0pcs / m
0pcs / m 113 pcs / m Linen textile
Picture

Pectin Removal Rate
(Fiber weight) -
(20.31kg) 3.89%
(19.52kg) -
(19.52kg)

FIG. 5 shows the state of the linen fibers (bottom) and liner fibers (medium) passed through the beater and the linen splitting machine (top) discharged from the linen splitting device, which are introduced into the linen splitting device, and passes through the linen splitting device. As you can see the linen fibers are getting shorter.

Most of the materials separated from the biting and draft sections of the linen splitting device were identified as pectin, and the physical pectin removal rate was calculated to be 3.89%, resulting in less damage to the linen fibers compared to chemical and biological pectin removal methods. It is confirmed that the uniformity and excellent pectin removal efficiency.

The manufactured linen sliver performs a combing process to remove some of the cut short fibers, and then performs the front and softening processes such as mixing and giling, and then blends the linen with 100% of the linen fibers or other fibers. To prepare a linen roving yarn containing, and then drafting the roving yarn to the desired thickness through the spinning process to make the necessary thickness and to produce a linen yarn through the twisting and winding process.

As described above, the pectin removal method of the linen fiber according to the present invention efficiently removes the pectin component contained in the flax raw material to reduce the fineness and the friction between the fibers can be produced yarns in a dry spinning manner to various blends and There is an advantage that can be mixed.

10: linen flax, 20: inlet section, 30: beating section, 40: draft section, 50: crimping device,
21: roller, 31: frame, 32: eccentric shaft, 33: motor, 34: crankshaft, 35: piston, 36: strike plate, 37: guide, 41: discharge groove, 42: linen flex inlet side corner, 43: pectin

Claims (7)

Putting 2 to 5 strands of linen flex with a fineness of 20 to 25 μm, a linear density of 15 to 20 g / m, and a fiber length of 160 to 220 mm in a linen splitting apparatus;
A bitting step of dropping pectin contained in the linen flaps by applying a physical blow to the linen flaps introduced into the linen splitting apparatus; And
And drafting 2 to 5 stranded linen flaps from the pectin to prepare 1 linen sliver having a fineness of 17 to 22 μm, a linear density of 30 to 40 g / m, and a fiber length of 120 to 160 mm.
The beating step includes a pair of frames 31 spaced apart from each other, an eccentric shaft 32 rotatably disposed across the pair of frames, and one end of the eccentric shaft 32 to transmit rotational force. Motor 33, the upper end is rotatably connected to the middle of the eccentric shaft 32, the crank shaft 34 to reciprocate up and down, the piston 35 mounted to the lower end of the crank shaft 34, the The crankshaft is mounted on the striking plate 36 and the pair of frames 31 which are installed at the lower portion of the piston 35 and periodically collide with the piston 35 to support the side of the crankshaft 34. 34) is performed by a beater device comprising a guide (37) to reciprocate in the vertical direction. The method according to claim 1,
The linen dispenser is equipped with 8 to 12 pairs of rollers for conveying the linen flax, the distance between the rollers is 40 ~ 60 mm, the draft ratio between each roller is 1: 1.01 ~ 1.15 and the overall draft ratio is 1: 1.1 ~ 2.5 Method for removing pectin of linen fibers, characterized in that. The method according to claim 2,
The roller is pectin removal method of linen fibers, characterized in that the surface is concave-convex in the embossed shape of the convex shape. delete The method according to claim 1,
In the beating step, the linen flex is hit two to four times in succession, the blow plate 36 is formed with a discharge groove 41 in the center, the discharge groove 41 is a perpendicular direction of the linen flex 10 running direction It is arranged in a long and narrow form and penetrates up and down through the blow plate 36, the upper inlet of the discharge groove 41 is a linen fiber pectin of the linen fiber, characterized in that formed in the shape chamfered How to remove. The method according to claim 5,
The discharge groove 41 is a pectin removal method of linen fibers, characterized in that formed in the same number as the number of continuous blows of the linen flex, or one less than the number of continuous blows. The method according to claim 1,
Passing the prepared linen slivers through the crimping device (50) to form pectin removal of linen fibers, characterized in that to form 100 to 120 crimps per meter linen sliver.

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