JP2011506785A - Hemp fiber curing method and burlap fiber curing additive - Google Patents

Abstract

The present invention provides a hemp fiber curing method, which includes the following steps. (1) Spray the blended additive onto the hemp fiber. The weight ratio of the additive to hemp fiber is 0.4 to 0.5. (2) The hemp fibers that have undergone the treatment in step (1) are put into a primary curing warehouse and left for 2-3 days. (3) Remove the hemp fiber that has undergone the curing treatment in step (2) from the primary curing granule, turn the hemp fiber upside down, put it into the secondary curing granule, and stop heating when the temperature is raised to 50-60 ° C. Let it cure for 5-6 days in the curing room. This curing method allows the curing additive to penetrate better into the fiber core, effectively increasing the spinnability of the hemp fiber. Furthermore, the present invention provides a curing additive exclusively for burlap fibers suitable for the above-described curing method. The curing additive ensures whiteness suitable for the fiber and can further increase the humidity and flexibility of the fiber.

Description

  The present invention relates to the technical field of fiber additives, and more particularly to a method for curing hemp fibers and a curing additive for burlap fibers.

  With the improvement of the human standard of material living, people changed their focus on the durability of the original clothing to change its demand for comfort, and hemp fibers have relatively good moisture permeability, low static electricity and excellent With antibacterial properties, hemp textiles are increasingly used by people. The fabrics of the current hemp spinning products are mainly made of flax, ramie, or this kind of raw material blended / interwoven with other fibers such as cotton, wool, chemical fibers, silk yarn, Due to the high price of flax and linseed, hemp spinning products have not yet become more widely applied. However, jute is the second most used fiber in the world after cotton, and its price is cheap, and it has better hygroscopicity and suspension than flax and linseed, and has a slightly antibacterial ability. Although it is inferior to cannabis, it has great application value and development potential.

However, the content of lignin contained in jute is relatively high (up to 10-13% by weight), several times that of flax, the fiber is very thick and hard, and the spinnability is very bad. The application of burlap clothing fabric is greatly limited. Among the existing technologies, in order to increase the spinnability of the above materials, the natural fibers must first be deflocculated and thinned, but can also be obtained by deflocculating and thinning. Hemp fibers are still in a hard state and difficult to weave. Therefore, it is necessary to further improve the fiber properties and improve the performance of the hemp fibers that have been deflocculated and reduced in diameter.

    At present, there is a conventional method for improving characteristics of hemp fibers by using hemp fiber curing additives and curing them. The fiber curing refers to performing performance improvement such as flexibility and spinnability on the fiber using an additive before spinning after the fiber is treated such as deflocculation. The curing additive can optionally include a softening additive, an emulsifier, a penetrant or a humectant, depending on the required performance of the product. As is clear from research, among the above-mentioned curing additives, the selection of additives having different merits and the compounding ratio for each group based on the grouping of the selected additives, the hemp fiber The ability to improve performance such as spinnability and humidity is different. Therefore, it is extremely important for the hemp spinning industry to choose additives with excellent curing performance to be applied to different hemp fibers in the current spinning manufacturing method, and to select the ratio of each group appropriately. It is a parameter.

    As for burlap fibers, among the commonly used curing additives, aminosilicone oil is always used as a softening agent. The softness and lubricity that aminosilicone oil gives to the fibers are all amino. The content of amino groups in aminosilicone oil is expressed in terms of ammonia and refers to the number of milliliters of 1 equivalent hydrochloric acid required to neutralize 1 g of aminosilicone oil. Generally speaking, the higher the amino group content, the higher the amino value, and the treated fiber becomes softer and smoother. For engineers in this field, usually, in order to increase the flexibility of the fabric, many choose to increase the amino value of the aminosilicone oil, so that the amino value is usually not less than 0.2. However, if the amino value is too high, the smoothness (also referred to as lubricity) of the fiber is excessively increased, the bonding force between the fibers becomes very small, and the spinnability becomes extremely poor. Thus, the amino value in current technology usually does not exceed 0.6. In addition, as the amino value of amino silicon oil increases, the oxidation probability of active hydrogen in the amino group increases, and it is easily oxidized to form a chromophore, causing yellowing of the fiber. In order to solve such problems, the existing technology adopts a method of bleaching later. However, the process of the bleaching process inevitably generates a certain amount of sewage other than increasing costs.

    About the curing method of the hemp fiber of the existing technology, in Patent Document 1 and Patent Document 2, the hemp fiber is subjected to humidified sediment curing for 18 to 30 hours, and then stored directly from the curing warehouse, artificially bundled, A method for curing hemp fibers to linen a hemp bundle is disclosed. Similarly, Patent Document 3 discloses a kind of double-treatment modification method for flax short fibers, and it is necessary to cure the same in the process of modifying the hemp short fibers. The moisture curing treatment for 36 to 48 hours is similarly performed on the hemp fibers in a room at -25 ° C, but the moisture return rate of the hemp fibers after the curing is only 15 to 18% by weight. Among the existing technologies described above, room temperature humidification curing is employed to cure hemp fibers, and the curing time is kept within 48 hours. Since the manufacturing method first adopted room temperature curing, the additive cannot sufficiently penetrate into the hemp fibers. Second, the small amount of enzyme remaining in the pretreatment deflocculation process of hemp fibers cannot be encouraged to play a role again in the curing process. Thirdly, the hemp fiber at the bottom of the curing shelf is in the lower layer of the lower part compared to the hemp fiber at the top, so it does not touch the air sufficiently, resulting in insufficient fiber “breathing” As a result, the flow of the “chamber cavity” at the center of the hemp fiber and the “cavity” connected thereto is not smoothly performed, and the curing additive cannot sufficiently enter the inside of the fiber. The effect is reduced. It has been demonstrated that only a small amount of the curing additive enters the fiber and that the fiber in the lower layer is poorly cured.

Chinese patent CN1292435A Chinese patent CN1086273A Chinese patent CN1796962A

As the first technical problem to be solved by the present invention, in the existing technology, if the amino value of amino silicone oil is too low, the flexibility of the fiber becomes relatively low, and if the amino value is too high, the fabric tends to yellow. If the smoothness of the fiber is too high, there is a problem that the cohesive force between the fibers decreases, and therefore the spinnability deteriorates. Furthermore, by selecting an amino silicone oil having an appropriate amino value, the above technical problems can be overcome, and at the same time, excellent pliability and appropriate fiber whiteness can be obtained. It is necessary to provide a curing additive.
The second technical problem to be solved by the present invention is a problem that the curing of hemp fibers is insufficient in the existing technology. Through improving the method of curing hemp fiber, the above-mentioned technical problems are solved, and in addition, a kind of hemp fiber curing additive can sufficiently enter the inside of hemp fiber, and hemp fiber can be sufficiently cured, Then, it is necessary to provide a hemp fiber curing method in which the enzymes in the pretreatment process of hemp fibers are fully utilized to further cure the hemp fibers.

In order to solve the above technical problems, the present invention discloses a kind of hemp fiber curing method, which includes the following steps.
(1) Spray the blended additive onto the hemp fiber. Here, the weight ratio of the additive to the hemp fiber is 0.4: 1 to 0.5: 1.
(2) The hemp fibers that have undergone the treatment in step (1) are put into a primary curing warehouse and left for 2-3 days.
(3) Take out the hemp fiber that has undergone the curing in step (2) from the primary curing granule, turn the hemp fiber upside down and place it in the secondary curing granule, and heat up as soon as the temperature is raised to 50-60 ° C. Stop and cure for 5-6 days in the secondary curing cage.
What is necessary is just to take out the hemp fiber which passed through the curing | curing of step (3), and just leave it for 2 to 6 hours. Here, “hemp fiber” means “hemp” or “burlap”.

The present invention also discloses a burlap fiber specific curing additive used in the above-described curing method. This additive contains 0.5 to 3% by weight of an emulsifier and 5 to 7% by weight of amino silicone oil having an amino value of 0.3 to 0.4 and a molecular weight of 300 to 30000.
Among them, the additive is optimized by selecting 1 to 2% by weight of emulsifier and 6% by weight of aminosilicone oil. The amino value of amino silicone oil is 0.35. The emulsifier is a nonionic emulsifier.
In addition, the above-mentioned curing additive may contain 0.5 to 3% by weight of a humectant and 0.5 to 4% by weight of a moisture absorbent. Among them, preferably, the moisturizing agent is selected to 0.8 to 2% by weight, the hygroscopic agent to 1 to 3% by weight, and the ratio of the moisturizing agent to the hygroscopic agent is selected to 2/3 to 4/5. Preferably, glycerin is selected as the humectant and urea is selected as the humectant.
In addition, the curing additive may contain 0.5 to 3% by weight of a nonionic penetrant, preferably 0.8 to 2% by weight.
In addition to the emulsifier, aminosilicone oil, nonionic penetrant, or humectant and hygroscopic agent, the above-mentioned curing additive may contain 5 to 7% by weight of a quaternary ammonium salt softener.

The present invention has the following features.
(1) The hemp fiber curing method of the present invention divides the hemp fiber curing into two main stages, the first stage is curing the hemp fiber at room temperature for 2 to 3 days, the additive is sufficiently and slowly It is allowed to penetrate into the interior so that the additive can penetrate slowly and well within the hemp fiber. However, the curing temperature is room temperature, and in view of the fact that the additive cannot sufficiently penetrate into the fiber core at room temperature, the temperature of the curing chamber is raised and the “chamber” and “cavity” inside the hemp fiber are heated. Opening, thereby expanding the “passage” through which the curing additive penetrates into the fiber, allowing the curing additive to penetrate to the fiber core, thereby increasing the spinnability of the hemp fiber.
(2) When moving the curing store, all the hemp fibers in the bottom of the primary curing store are turned upside down and placed on the upper portion of the secondary curing store, and the hemp fibers in the bottom are changed by changing the position. Fully exposed to the air, allowing the “chamber cavity” in the center of the hemp fiber to fully “breath”, and the curing additive fully penetrates into the “cavity” and “cavity” inside the hemp fiber And further heal the hemp fiber.
(3) In the second stage curing process described in the present invention, the temperature of the secondary curing granule is heated to 50-60 ° C. Heating, on the other hand, re-activates a small amount of enzyme remaining in the pre-defatting process of the hemp fiber, hydrolyzes the glue inside the hemp fiber that has been insufficiently de-peptized, and further separates the hemp fiber. , Improve the fluffy nature of hemp fiber. On the other hand, heating is advantageous in expanding the “chamber cavity” and “cavity” in the inner center of the hemp fiber, thereby accelerating the penetration of additives and moisture into the hemp fiber.
(4) The hemp fibers that have undergone curing are allowed to stand naturally, and during the curing process, a large amount of water vapor adhering to the surface of the hemp fibers is volatilized due to an increase in temperature. Can prevent wrapping between hemp fiber and spinning equipment rollers, which can easily occur in the spinning machine, thereby improving spinning efficiency and quality.

(5) Among the curing additives dedicated to the burlap fiber of the present invention, by selecting an amino silicone oil having a low molecular weight of 0.3 to 0.4 amino value and controlling the weight component ratio of the additive, Since small molecular weight amino silicone oil can efficiently penetrate into the fiber, the flexibility of the burlap fiber can be increased efficiently, and the surface of the burlap fiber can have an appropriate smoothness. In the meantime, sufficient cohesive force necessary for forming the spun yarn is provided, thereby improving the fiber spinnability. On the other hand, by selecting the above-mentioned additives and weight component ratio, the curing additive gives the fiber the necessary flexibility and the appropriate amount of aminosilicone oil, increasing the possibility of oxidation of the additive due to an excess of aminosilicone oil. This clearly reduces the yellowing of the burlap fibers and ensures the appropriate whiteness of the burlap fibers.
(6) Since the penetrant is added to the curing additive for jute fiber of the present invention, the aminosilicone oil after emulsification is efficiently and promptly penetrated into the fiber to enhance the curing effect. .
(7) A hygroscopic agent and a humectant are simultaneously added to the curing additive for jute fiber of the present invention. Among them, the humectant effectively contains moisture inside the fiber, and the moisture absorbent absorbs moisture from the outside in a timely manner when the moisture inside the fiber is lost during the spinning process, and compensates the moisture inside the fiber. . Further, by controlling the weight component ratio of the moisture absorbent and the moisturizing agent, it is possible to maintain the balance of humidity inside and outside the fiber and to maintain the necessary moisture of the fiber necessary for the spinning process of the burlap fiber.
(8) The quaternary ammonium salt softener added to the special curing additive for jute fiber of the present invention can further enhance the flexibility of the fiber that has undergone curing with amino silicone oil.

(Specific implementation method)
The principle by which the curing additive dedicated to burlap fibers of the present invention cures burlap fibers is as follows.
The amino group in amino silicone oil is an alkali group, and the alkali group can be transformed into a cationic ammonium group contained in amino silicone oil under the action of an acid. Show.
(1) Easily emulsified under the action of a surfactant.
(2) Amino silicone oil itself has increased flexibility.
(3) The bond strength with the fiber is increased.
Thereafter, the emulsifier in the curing additive and the above-described amino silicone oil act to emulsify it, thereby ensuring the stability of the above-described curing additive solution. The surface tension of aminosilicone oil after becoming a milky lotion is extremely small and easily spreads on the fiber surface. If the molecular weight is small, the aminosilicone oil further penetrates to the inner core of the fiber.

Since amino groups in amino silicone oil have a relatively strong polarity, they interact with carboxyl groups and hydroxyl groups in the fiber, creating strong directionality and adsorption on the fiber surface and inside, and forming simultaneously. The main chain of Si-0 is very flexible, the methyl groups on the silicon atoms reduce the friction between the fibers, give the fibers excellent smoothness, and give the fibers good flexibility Give and also swell the fibers.
In the present invention, by appropriately selecting the ammonia value of the aminosilicone oil and the respective weight component ratios of the additives, most of the emulsified aminosilicone oil enters the inner core of the fiber, and the remaining small amount is outside the fiber. A film is formed. As a result, the flexibility of the burlap fibers can be increased, and at the same time, the surface of the fibers can be slipped too much due to the excess of aminosilicone oil, so that the bonding force between the fibers is not weakened and the spinnability is not lowered.

In addition, the penetrant in the curing additive of the present invention can rapidly penetrate the active ingredient of the additive into the fiber. Accordingly, the curing time required for the jute fiber of the curing additive without the penetrant added is clearly longer than the curing time required for the curing additive with the penetrant added. By the action of the above-mentioned additives, the softness, smoothness and spinnability of burlap fibers can be improved efficiently.
In addition to this, another type of curing additive dedicated to burlap fibers of the present invention is used as a coexisting component in a curing additive in combination with a hygroscopic agent and a moisturizing agent. The moisturizing agent efficiently contains moisture inside the fiber, and the moisture absorbing agent compensates moisture in the environment in the fiber in a timely manner against a certain amount of moisture inside the fiber during the fiber weaving process. Thereby, the humidity balance inside and outside the fiber can be maintained.

By the action of the above-mentioned additives, the softness of burlap fibers can be improved efficiently, the bonding strength between the fibers can be strengthened, and the spinnability of the fibers can be enhanced.
Here, the emulsifier is a nonionic surfactant, an anionic surfactant, or a combination of the two. The reason for selecting the nonionic surfactant is that the nonionic surfactant does not adversely affect the curing effect by acting with the cationic amino silicone oil.
The penetrant is a nonionic penetrant, and the reason for selection is that, like the emulsifier, the nonionic penetrant acts on the cationic amino silicone oil and does not adversely affect the curing effect.
A quaternary ammonium salt softening agent can be further added to the above-mentioned additives to further cure the fiber and increase the flexibility of the fiber.

Example 1
The following components are contained in the first burlap fiber curing additive of the present invention.
6% by weight of amino silicone oil having an amino value of 0.35 and a molecular weight of 300 to 500
Dialkyldimethylammonium salt 6% by weight
Pelegal 0 (emulsifier) 2% by weight
JFC 0.8% by weight
In this embodiment, any amino silicone oil having an amino value of 0.35 and a molecular weight of 300 to 500 is selected. Since the amino silicone oil has a very small molecular weight, it easily penetrates into the inside of the fiber and increases the flexibility of the fiber more efficiently. The penetrant of dialkyldimethylammonium salt, Pelegal 0, and JFC enhances the flexibility of the fiber, enables emulsification, and further accelerates the function of penetrating the softener into the fiber while simultaneously reducing the cost. Pelegal 0 is a nonionic emulsifier, also called AEO, and is a concentrate of ethylene oxide and higher aliphatic alcohols. This emulsifier has no binding ability to various fibers and can be easily washed off after use.
In addition to this, the additive having the above-mentioned component ratio can efficiently improve the flexibility of the burlap fiber, and at the same time, can maintain appropriate smoothness of the fiber and appropriate whiteness of the burlap fiber, and the fiber of the curing additive It can accelerate penetration into the interior and increase the fiber curing efficiency.

(Example 2)
The second burlap fiber curing additive of the present invention contains the following components.
Amino silicon oil 5% by weight with amino value 0.35 and molecular weight 1000-5000
Pelegal 0 (emulsifier) 1% by weight
Sulfonated oil STO 0.5% by weight
Additives with this component ratio can effectively improve the flexibility of the burlap fibers, while maintaining the appropriate smoothness and whiteness of the burlap fibers, and the penetration of the curing additive into the fibers. Accelerate and increase fiber curing efficiency.

(Example 3)
The third burlap fiber curing additive of the present invention contains the following components.
Amino silicone oil 7% by weight with amino value 0.35 and molecular weight 1000-5000
Pelegal 0 (emulsifier) 3% by weight
Sulfonated oil STO 2% by weight
Additives with this component ratio can efficiently improve the flexibility of the burlap fibers, while maintaining the appropriate smoothness of the fibers and the appropriate whiteness of the burlap fibers. Penetration can be accelerated and fiber curing efficiency can be increased.

Example 4
The fourth burlap fiber curing additive of the present invention contains the following components.
4% by weight of amino silicone oil having an amino value of 0.3 and a molecular weight of 10,000 to 50,000
Emulsifier OP 0.5% by weight
Neutral RP-98 3% by weight
In this embodiment, any amino silicone oil having an amino value of 0.3 and a molecular weight of 10,000 to 15,000 is selected. Since the amino silicone oil has a relatively small molecular weight, it easily enters the inside of the fiber, and the flexibility of the fiber can be efficiently increased. The emulsifier OP achieves emulsification, and the neutral RP-98 effectively accelerates the penetration of the softener into the fiber, while at the same time the cost is low. The emulsifier OP is a nonionic emulsifier and is a concentrate of ethylene oxide and alkylphenol. The additive having the above-mentioned composition can efficiently improve the flexibility of the burlap fiber, and at the same time can maintain the appropriate smoothness of the fiber and the appropriate whiteness of the burlap fiber, and the penetration of the curing additive into the fiber. Can be accelerated and the curing efficiency of the fiber can be increased.
The above-mentioned “JFC”, “sulfonated oil STO”, and “neutral RP-98” are trade names of penetrants and are commercially available.

(Example 5)
The fifth burlap fiber curing additive of the present invention contains the following components.
Aminosilicon oil 6% by weight with amino value 0.35 and molecular weight 300-500
Dialkyldimethylammonium salt 6% by weight
Pelegal 0 (emulsifier) 2% by weight
Urea (hygroscopic agent) 3% by weight
Glycerin (humectant) 2% by weight
In this example, an amino silicone oil having an amino value of 0.35 and a molecular weight of 300 to 500 is selected. Since the amino silicon oil has a very small molecular weight, it can easily enter the inside of the fiber and efficiently increase the flexibility of the fiber. The flexibility of the fiber is enhanced by dialkyldimethylammonium salt, the fiber is emulsified by Pelegal 0, urea is a kind of hygroscopic agent, keeping the humidity of the fiber, glycerin absorbs moisture, and the cost is low. Pelegal 0 is a nonionic emulsifier, also called AEO, and is a concentrate of ethylene oxide and higher aliphatic alcohol. This emulsifier has no binding ability to various fibers and can be easily washed off after use.
In addition, the additive having the above components can efficiently improve the flexibility of the burlap fibers and at the same time maintain the appropriate smoothness of the fibers and the appropriate burlap fiber whiteness. The ratio of glycerin and urea is 2/3, which is the ratio of the humectant and the hygroscopic agent in the burlap-exclusive curing additive, and the appropriate moisture ratio of the burlap fibers can be better maintained.

(Example 6)
The sixth burlap fiber curing additive of the present invention contains the following components.
4% by weight aminosilicon oil with amino value 0.3 and molecular weight 1000-3000
Pelegal 0 (emulsifier) 0.5% by weight
Urea (hygroscopic agent) 0.5% by weight
Glycerin (humectant) 0.5% by weight
The additive having the above components can efficiently increase the flexibility of the burlap fiber, and at the same time, increase the appropriate smoothness of the burlap fiber and the appropriate whiteness of the burlap fiber. Can hold.

(Example 7)
The seventh burlap fiber curing additive of the present invention contains the following components.
Amino silicone oil with amino value 0.4 and molecular weight 10000-15000 8% by weight
Emulsifier OP 3% by weight
Urea (hygroscopic agent) 4% by weight
Glycerin (humectant) 3% by weight
In this embodiment, any amino silicone oil having an amino value of 0.3 and a molecular weight of 10,000 to 15,000 is selected. The aminosilicone oil belongs to an aminosilicone oil having a relatively low molecular weight, so that it easily penetrates into the fiber and efficiently increases the flexibility of the fiber. The emulsifier OP, urea, and glycerin realize their emulsification, moisture retention and moisture absorption functions, respectively, and the cost is low. The emulsifier OP is a nonionic emulsifier and is a concentrate of ethylene oxide and alkylphenol.
The additive having the above components can efficiently improve the flexibility of the burlap fiber, and at the same time, can maintain appropriate smoothness and whiteness of the fiber, and the ratio of glycerin to urea is 3/4. It is within the range of the ratio of the moisturizer and the hygroscopic agent in the special curing additive, so that the appropriate moisture ratio of the burlap fiber can be maintained.

(Example 8)
The eighth burlap fiber curing additive of the present invention contains the following components.
Amino silicone oil with amino value 0.3 and molecular weight 10000-15000 8% by weight
Emulsifier OP 1.5% by weight
1% by weight of urea (hygroscopic agent)
Glycerin (humectant) 0.8% by weight
In this embodiment, any amino silicone oil having an amino value of 0.3 and a molecular weight of 10,000 to 15,000 is selected. The aminosilicone oil belongs to an aminosilicone oil having a relatively low molecular weight, easily penetrates into the inside of the fiber, and efficiently increases the flexibility of the fiber. Each of the emulsifiers OP, urea, and glycerin efficiently realizes the functions of emulsification, moisture retention and moisture absorption, and the cost is low. The emulsifier OP is a nonionic emulsifier and is a concentrate of ethylene oxide and alkylphenol.
The additive having the above components can efficiently improve the flexibility of the burlap fibers, and at the same time maintain the appropriate smoothness of the fibers and the whiteness of the burlap fibers, and the ratio of glycerin and urea is 4/5. It is within the range of the ratio of the moisturizing agent and the hygroscopic agent in the jute curing additive of the present invention, and therefore, an appropriate moisture ratio of the jute fiber can be maintained. In the above examples, the molecular weight of the aminosilicone oil can also be selected between 13,000-15000, 15000-18000, 18000-20000. By selecting a special curing additive composed of aminosilicone oil in the molecular weight range, the flexibility of the burlap fiber is increased, and the appropriate smoothness (smoothness) of the fiber surface and the appropriate whiteness of the fiber The degree of retention is preserved, and of particular importance is the ability to retain the moisture content of the fibers required for the weaving process of burlap fibers.

Example 9
Spray hemp fiber curing additive with water on the burlap fiber. Here, the weight ratio of the curing additive to water is 1:30. In the process of spraying hemp fibers, the curing additive is sprayed once each time one layer of selected hemp fibers is laid, and the process continues until a sufficient amount of hemp fibers to be installed in the curing warehouse is laid. Here, the weight ratio of the additive to hemp fiber is 0.4. The purpose of setting the weight ratio of the curing additive and hemp fiber of the present invention is to provide an additive component sufficient for the curing of hemp fiber.
Then, the hemp fiber for which the above laying has been completed is placed in the primary curing warehouse and left for 2 days. At that stage, the additive can enter the fiber sufficiently slowly, and the additive can sufficiently penetrate into the hemp fiber.
The hemp fibers that have undergone the above curing are taken out from the primary curing warehouse, and the removed hemp fibers are turned upside down, and the inverted hemp fiber is put into the secondary curing warehouse to the bottom of the primary curing warehouse. Make sure that the hemp fibers that are present are at the top when they are put into the secondary curing area. When the temperature is raised to 60 ° C., the heating is stopped and curing is performed for 5 days. At the curing stage,
(1) First, the hemp fiber is turned upside down, and the hemp fiber in the bottom part is repositioned so that it is in full contact with the air and the “chamber cavity” in the inner center of the hemp fiber is fully “breathed”. Thereby, the curing additive is sufficiently penetrated into the “chamber cavity” and “cavity” inside the hemp fiber, and further contact curing is performed on the hemp fiber.
(2) By raising the temperature of the secondary curing granule, the “chamber cavity” and “cavity” inside the hemp fiber are further opened under the heating action, so that the curing additive penetrates into the fiber “ The “passage” is enlarged and the curing additive can easily penetrate into the fiber core.
(3) The purpose of heating the secondary curing granule is to reactivate a small amount of residual enzyme in the pre-degreasing process of hemp fibers, and hydrolyze the glue inside the hemp fibers that have not been sufficiently de-degreased. This is to further separate the hemp fibers and enhance the fluffy nature of the hemp fibers.
The hemp fiber cured in the secondary curing warehouse is taken out and allowed to stand for 6 hours. The standing stage is a very important step in the hemp fiber curing process, and the step volatilizes a large amount of water vapor adhering to the surface of the hemp fiber due to the temperature rise during the curing process, thereby causing the surface of the hemp fiber to be volatilized. It is possible to prevent excessive accumulation of moisture, thereby preventing wrapping between the hemp fibers and the roller parts of the textile machine in the subsequent textile process, and to increase the textile efficiency. As an option, it is possible to omit the step, but it is preferable to select a natural standing curing step as a hemp fiber curing method.

(Example 10)
Spray hemp fiber curing additive with water on the burlap fiber. Here, the weight ratio of curing additive to water is 1:45. In the process of spraying the hemp fiber, the curing additive is sprayed once every time the selected hemp fiber is laid, and it is continued until the laying of a sufficient amount of hemp fiber to be installed in the curing warehouse is completed. Here, the weight ratio of the additive and hemp fiber is 0.45. The weight ratio of the above curing additive to hemp fiber is set to provide sufficient additive components for hemp fiber curing.
Thereafter, the hemp fibers for which the above-described laying has been completed are placed in the primary curing warehouse and left for 2.5 days. This allows the additive to enter the fiber sufficiently and slowly.
The hemp fibers that have undergone the above curing are taken out from the primary curing warehouse, and the removed hemp fibers are turned upside down, the inverted hemp fibers are put into the secondary curing warehouse, and heated when the temperature is raised to 55 ° C. Stop for 5.5 days. Heating in this step can open the “chamber cavity” and “cavity” inside the hemp fiber more open than at low temperatures, thereby expanding the penetration “passage” of the curing additive into the fiber and curing. The additive can be easily penetrated to the inner core of the fiber. In addition to this, at that temperature, when the activation temperature point was lower than that temperature, the activity of a small amount of enzyme remaining in the fiber depigmenting pretreatment process could be stimulated, and the depigmentation treatment was insufficient. It can hydrolyze the glue inside the hemp fiber, further isolate the hemp fiber, and enhance the fluffy nature of the hemp fiber.
The hemp fiber cured in the above secondary curing warehouse is taken out and left to stand for 5 hours.

(Example 11)
Spray hemp fiber curing additive with added water on hemp fiber. Here, the weight ratio of curing additive to water is 1:60. In the process of spraying the hemp fibers, each time the selected hemp fibers are laid once, the curing additive is sprayed once until the installation of a sufficient amount of hemp fibers to be installed in the curing warehouse is completed. Here, the weight ratio of additive to hemp fiber is 0.5. The weight ratio of the above curing additive to hemp fiber makes it possible to provide an additive component sufficient for the curing of hemp fiber.
Then, the hemp fiber for which the above-mentioned laying is completed is placed in the primary curing warehouse and left for 3 days. Sufficient time is allowed for the additive to penetrate sufficiently and slowly into the interior of the fiber.
Take out the hemp fibers that have undergone the above-mentioned curing from the primary curing warehouse, invert the hemp fibers that are taken upside down, put the inverted hemp fibers in the secondary curing warehouse, and raise the temperature to 50 ° C Then stop heating and cure for 6 days. Heating during that step allows the “chamber cavity” and “cavity” inside the hemp fiber to open even more than when cold, thereby expanding the penetration “passage” of the curing additive into the fiber, The curing additive can better penetrate into the inner core of the fiber. In addition, at that temperature, when the activation temperature point is lower than that temperature, a small amount of the enzyme remaining in the fiber pre-degreasing process is activated, and the glue inside the hemp fiber that has been insufficiently depigmented is removed. It can be hydrolyzed to further separate the hemp fibers and enhance the fluffy nature of the hemp fibers.
The hemp fiber cured in the secondary curing warehouse is taken out and allowed to stand for 2 hours.

According to the test result of the hemp fiber that has been cured by the above-described curing method, the moisture content of the hemp fiber before curing is 12 to 16% by weight, but the moisture content of the hemp fiber that has been cured is 32 to 38% by weight. Increased. As can be seen from the above, the curing method of the present invention can efficiently increase the moisture ratio of hemp fibers, and can further increase the spinnability of hemp fibers.
In Examples 9 to 11, the weight ratio of the curing additive and water was selected to be 1:30, 1:45 and 1:60, respectively, but in actual operation, the weight ratio of the curing additive and water was 1 As long as it is in the range of 30 to 1:60, all the objects of the present invention can be realized.
Although the present invention has been described in detail by way of specific implementation, those skilled in the art will recognize that all forms and details of changes made on this basis, such as books, do not exceed the scope of protection of rights requirements. It should be understood that all modifications applied to all emulsifiers and humectants and humectants of the invention fall within the protection scope of the present invention.

Claims (15)

Spraying one blended additive onto one hemp fiber;
Here, the weight ratio of the additive to the hemp fiber is 0.4: 1 to 0.5: 1,
Putting the sprayed hemp fiber in a primary curing warehouse and leaving it for 2-3 days;
The left hemp fiber is taken out from the primary curing granule, turned upside down and put into the secondary curing granule, the secondary curing granule is heated to raise the temperature to 50 to 60 ° C., and then the heating is stopped. , Curing the hemp fiber in the secondary curing warehouse for 5-6 days;
A method for curing one hemp fiber, characterized by comprising: The hemp fiber curing method according to claim 1, further comprising the step of taking out the hemp fiber cured in the secondary curing granule and allowing it to stand naturally for 2 to 6 hours. The hemp fiber curing method according to claim 1, wherein the hemp fiber is cannabis or burlap. An emulsifier is included at a content of 0.5 to 3% by weight, an amino silicone oil having an ammonia value of 0.3 to 0.4 and a molecular weight of 300 to 30000 is included at a content of 5 to 7% by weight. A curing additive for jute fiber used in the hemp fiber curing method according to claim 1. The additive according to claim 4, wherein the content of the emulsifier is 1 to 2% by weight and the content of the aminosilicone oil is 6% by weight. The additive according to claim 4, wherein the amino silicone oil has an ammonia value of 0.35. The additive according to claim 4, wherein the emulsifier is a nonionic emulsifier. The additive according to any one of claims 4 to 7, further comprising a moisturizer in a content of 0.5 to 3 wt% and a hygroscopic agent in a content of 0.5 to 4 wt%. The additive according to any one of claims 4 to 7, further comprising a nonionic penetrant at a content of 0.5 to 3% by weight. The additive according to claim 8, wherein the content of the humectant is 0.8 to 2% by weight. The additive according to claim 8, wherein the hygroscopic content is 1 to 3 wt%. The additive according to claim 8 or 9, further comprising a quaternary ammonium salt softener at a content of 5 to 7% by weight. The additive according to claim 8, wherein a ratio of the moisture absorbent to the humectant is 2/3 to 4/5. The additive according to claim 8, wherein the humectant is glycerin and the humectant is urea. The additive according to claim 9, wherein the content of the nonionic penetrant is 0.8 to 2% by weight.