JPH06341009A - Processing of jute fiber and processed article of banana fiber - Google Patents

Abstract

PURPOSE:To obtain pure-white, tough and soft jute fibers by bleaching jute fibers at low temperature, washing with water, treating with lactic acid, an organic acid and a lactic acid fermentation solution, opening. CONSTITUTION:Cultivated jute is collected, immersed in water, fermented and decomposed, bleached with water and lignin and tannin are removed from the jute with caustic soda and a peroxide. The dehydrated jute fibers are retreated with a peroxide, sodium percarbonate and a caustic alkali and centrifuged. The filtrate is electrolyzed, mixed with hydrogen peroxide and the jute fibers are bleached with a ClO2<-> solution as a bleaching solution and repeatedly dehydrated and washed with water. The jute fibers are treated with a lactic acid solution or a fermented lactic acid and optionally a monochloroacetic acid, dehydrated, washed with water and single fibers are opened in water by a combing and carding machine. The jute fiber is mixed with silk fiber and synthetic fiber, twisted, made into cloth or woven fabric and dyed or printed.

Description

Detailed Description of the Invention

In the present invention, the conventional burlap fiber was mainly used as a packaging bag for grains, and also as a rug or a wall cloth, but its main use was limited to the packaging bag. , Its use in cereals has been extremely reduced, and the labor and labor-intensive industry of burlap cultivation has been on the decline, and it has been necessary to develop new demand for it, but it is bristle and strongly colored. Therefore, even if it is the same hemp, it has a drawback that it can not be used for clothing such as long ram that is liable to bleach like green ramie fiber and easily bleached, but bleaching with pure white decomposes fiber at low temperature However, since it does not lose its bristleness, it is further washed with water to wash the tough and soft fibers soaked with lactic acid, organic acid, and lactic acid fermented liquid, and then loosened before being dehydrated and dried. It is made into raw silk, synthetic fiber, cotton, wool fiber, etc. When mixed and mixed in a liquid and mixed, a certain amount of a bundle is applied to a twisting machine to be processed into a mono-flamented twisted yarn and dried, or when the fiber is spun in a semi-dried state as it is, a fabric or a fiber cloth is used. Made This is further printed or
Printed and printed patterns are used for clothing and interiors, and are characterized by being used for many purposes as building wall materials. Common jute is a processed and cultivated product that is declining as a slant industry, but there are many state-owned enterprises in India, Pakistan, Sri Lanka, and China, and they are trying to measure the stability of those enterprises by developing their new uses. However, this jute originally has a dyed yellow color, and its removal is not easy. In particular, the deposition of fibers due to the clay nature has many drawbacks as a raw material for papermaking, and because it is bristle, cotton Since there is almost no fiber shrinkage like this and there is no shrinkage between single fibers, it is difficult to produce long mono-fractions, there are drawbacks that coloring is difficult and it is easy to decolorize, and it is limited to packaging bags containing cereals. Since it was spun by an extremely thick mono-fragment, its weight was heavy and lacked the delicacy of coloring, and its use was limited by itself. However, there is a strong demand for hemp, and in order to use it as a raw material for rice, rice paper, condenser paper, paper banknotes, Koso, Mitsumata, Manila hemp, etc., which have a softness, were often used. For this reason, a method of fermenting this jute fiber with microorganisms to unravel and soften the fiber was generally used,
There was a problem in mass production, and there was a drawback that the equipment became huge. Further, this treatment has a drawback that it takes too much time. In order to treat this jute, first, delignification and tannin must be performed, and when boiling with caustic alkali such as Mitsumata and Kozo fiber, yellow is used to secondarily color the fiber to yellow. Since it is not possible to obtain pure white fiber, it was decolorized by heating with hypochlorous calcium or sodium hypochlorite, but even this has the drawback that it does not remove yellow. The clay colloid that penetrated inside had the drawback that it could not be decolorized with a bleaching agent, and as a papermaking raw material there were spots and the quality of the paper deteriorated.
Therefore, as room temperature bleaching, the fibers lightly decolorized with CLO2 solution, glyoxal solution, and hydrogen peroxide solution are washed with water, immersed in lactic acid solution, fermented lactic acid solution, organic acid solution, or monochloroacetic acid solution, and then washed with water to remove. When acidified, the colored liquid in the fibers is eluted and pure white soft fibers are obtained. And the skin quality that is difficult to shed is also removed. Since the burlap fibers still form a bundle of cortical fibers, when the fibers are mixed into a fiber aroma by a combing machine, they are converted into long unit fibers, and the dropped fibers are used as short fibers for a papermaking raw material. The short fibers produced at this time are up to 10%, and when mixing synthetic fibers, cotton or raw cotton into twist fibers, the shrinkage is improved by the use of genuine cotton, raw cotton or other synthetic fibers, and twist processing It is also used as a twisting raw material because it makes it easy to dye and it is also used as a twisting raw material, but when this pure white short fiber of jute is fluffed and mixed with cotton and hung on a garter and twisted with a spinning machine, Since the blended cotton can be produced, the tensile strength of the twisted yarn is more than doubled. Next, since the twisted yarn obtained by mixing the raw fibers of the long fibers with the raw fibers of the long fibers or the synthetic fibers can obtain extremely fine and tough fibers, the twisted yarns and bundles are spun into a cloth or a woven fabric as a clothing monoflament. A woven cloth is obtained which is warm in winter at times and easily dries against sweating in summer, and can be easily dyed with general acid dyes and basic dyes. In addition, not only the same results can be obtained with fibers mixed with cotton or synthetic fibers, but also the mixed spinning with carbon fibers or metal fibers can be easily processed by the above-mentioned mixed spinning. Then, when these fibers are used for the chords of chrome, gelatin, or gelatin-solidified ones, it is not foolproof that they are stronger than raw silk strings, but they are treated with a chitosan lactic acid solution or a polyvinyl acetal solution, The one with the film formed can obtain a twisted yarn with high durability, but the one coated with the mixture of the antibacterial agent and the preservative is effective as a tick repellent,
It is also effective as a fungicide. In addition, as a wall cloth, the printed patterned cloth is used for interiors, and when raised, it is used as jutan, not only as a raw material fabric for artificial leather, but also because it has high bending strength, it is useful as automotive leather. is there. And, jute pure white short fiber is especially used as a papermaking raw material, especially when it is put in diaper paper, it drains well, and it is not only substituted for other green ramie, Manila hemp, etc., but also mixed with glass fiber, it is used as a koshi material. There is a sound effect, melamine, phenol,
It is useful as a carrier for urea resins and as a reinforcing material for synthetic resins. In particular, when it is used for an air filter or an automobile exhaust gas filter, it has a low flow resistance, and it has heat resistance, and when it is used as a paper filter, its durability is maintained. Unlike other cotton and wood pulp, this fiber has rigidity, is less degradable, and is highly durable, so it is also used as a raw material for banknotes, wire wrapping paper, and as a plastic core material. The etherified fiber obtained by treating the alkali fiber with alkali with ethyl iodide or ethyl bromide at 180 ° C. serves as a raw material for plastics and is also used as a surface-treated paper for omeme cover paper. In this way, in order to use jute fiber in a wider range of fields, the essential drawback is that the technique of bleaching jute into pure white hemp is used to soften the nature of the fiber with less shrinkage due to its original rigidity. It is necessary to make it easy to decompose into fibers, and in the former case of bleaching, it is necessary to carry out the defect that the fibers are agglomerated in the form of dumpling at room temperature.
For this purpose, a treatment with a peroxide is required instead of an alkali treatment, and it is necessary to collect and utilize it as pollution wastewater by electrolysis. In addition, the fiber decomposition method using a fermenting bacterium has a drawback that it takes too much time, and the processing time was shortened by levitation of lactic acid and organic acid, monochrome acetic acid. And
Since it has the action of removing clay, which becomes sewage that is not generally taken away, and the adhesion of colloidal substances, pure white burlap is processed, these are substituted for expensive green ramie and Manila hemp, and also
The combined use has the advantages of improving productivity and reducing costs. Also, a conventionally processed jute woven fabric is immersed in an alkaline percarbonate solution to electrolytically recover alkaline water, delignification,
The tannin concentrate is recovered and used as a toughening agent and also as a raw material for vanillin, and the delignified water that has been washed with water, the tannin fiber cloth that has been washed with water and floated in water are then washed with CLO2 hydrogen peroxide and glyoxal water at room temperature. The treated one is washed with water and treated with sodium percarbonate, washed with lactic acid, organic acid, and monoacetic acid and washed with water. As a base fabric of synthetic leather,
It is used as a base material for jumpers, ties, cores and rugs for clothes, and has bristleness that is tough and soft.In addition, the bleached monofilament twist string of conventional burlap is used as a woven thread. Used as a raw material thread for clothing.
In particular, this bleaching and lactic acid processing makes it possible to process conventional thick monofragments into thin monoflaments by detannining and lignining action, so it is highly used as a twisted yarn for textile materials, and is used for clothing and decorations, handbags, floor cloths, etc. It is also used for industrial purposes, its application is expanded, the constitution of the oblique sun industry is remarkably improved, and it is an industrially useful invention. This treatment is also applied to banana fiber processing. An embodiment of the present invention will be described below with reference to the drawings.

[Fig. 1] shows a flow sheet diagram, (A) bleached woven fabric and twisted yarn made by a conventional method, and made pure white cloth and same twisted yarn. (B) Bleached jute directly in the cultivation area. , Lactic acid processed.

FIG. 2 shows a processing step diagram of f jute in the cultivated area. Fill pits (1) (2) (3) (4) (5) (6) with 5 tons of 20% caustic water, hydrogen peroxide solution or 100 kg of sodium percarbonate and put raw jute into the basket. (7)
50 for each of (8), (9), (10), (11), and (12)
Add 0 kg and dip. Immersion liquid temperature is 25-45 ° C
Is. Immersion time is 3 days. For this conveyance, the upper rail (13) moves up and down by the pulley (14) to move. When the immersion for 3 days is over, the pumped alkaline water extract is sent to the electrolytic cell (15) by the pump to perform the electrolysis of the diaphragm (16), and the cathode alkaline water solution is pumped by the pipe (17). The alkaline extract is stored in the liquid storage tank (19) from the pump (18)
Then, the regenerated alkaline liquid is sent to the pits (1), (2), (3), (4), (5) and (6), and the immersion is continued. One day after soaking, through the rail, baskets (7) (8) (9) (10) (11) (12)
And then wash it by immersing it in the washing bit (19) (20) and washing it with alkaline water.
In (22), the alkali is removed to recover the alkali, which is introduced into the first alkaline aqueous solution and reused. Electrolyzer (1
9) The electrolytic acid solution in the anode chambers (C) and (C ') of (20) is used for preliminary sterilization of jute raw material, and the water tank (2
3) It is stored in water and used by priming with fresh jute to remove deposits of yellow mud, but the discharged water is diluted with water and discharged, and the cathode of this electrolytic cell (21) (22) Room (D)
The alkaline water solution of (D ′) is reused as an alkaline water solution and used as immersion water for jute. The jute treated with the first alkaline solution is dehydrated in the centrifuge (E), and the filtrate from the drain (E ') is introduced into the electrolytic cell (15) by a pipe,
Anodizing and dealkalization are performed, and at the same time, water is washed in the centrifuge (E), the primary purified jute is taken out and washed in the water washing tanks (19) (20) for 5 hours, and then the centrifuge (F) is used. Then, the filtrate is dehydrated, and the filtrate is introduced into the electrolytic cells (22) and (21) and subjected to diaphragm electrolysis to recover the alkaline solution in the cathode chambers (D) and (D ′) and reuse it. Next, the washed jute was immersed in a 10% hydrochloric acid water tank (23), taken out 10 hours later, dehydrochlorinated in lactic acid or a 5% monochloroacetic acid solution, and then in an immersion tank (24). After being immersed and 10 hours later, when it became pure white, it was dehydrated by a centrifugal separator (G), and the filtrate was stored in a liquid storage tank (25) and introduced into an anode chamber (C ″) in an electrolytic cell (26). The concentrated and concentrated lactic acid is returned to the lactic acid tank (24) by a pump for reuse, but the lactic acid is neutralized with lime to be recovered as calcium lactate to adjust the lactic acid concentration. Although it is recovered and treated with a hydrochloric acid-lactic acid mixed solution, jute that has been washed with water after alkaline treatment of jute is treated with this solution, which also saves lactic acid, but to remove calcium chloride by-products, wash with water. The wash water should be neutralized with lime to remove calcium lactate. The hydrochloric acid neutralized in the hydrochloric acid neutralization tank (26) is neutralized, discharged, and dehydrated in the centrifuge (H) to recover calcium lactate lime mud. This calcium lactate is introduced into the acid decomposition tank (27) and neutralized with hydrochloric acid or sulfuric acid to recover lactic acid. The jute dehydrated in the lactic acid solution tank (24) is After being dehydrated in the centrifuge (27), it is semi-dried in the drying chamber (28) and has a moisture content of 50%.
While reaching the above, a combing machine (29) is used to scrape and single fibers are scraped. Then, by-product short fibers are collected, long fibers of bleached burlap are collected, raw silk and synthetic fibers are mixed and twisted by a twisting machine (30) to make a mono-flament, which is wound on a bobbin. Weaving machine (3)
It is processed in 2) and processed into a fabric. In addition, Kushiski machine
The short fibers produced during skimming in step 9) are dried, mixed with cotton, short synthetic fibers, glass fibers, carbon fibers, and metal fibers, and then applied to an anti-fluffing machine, then a cotton layer is formed with a garter machine with a mixing machine. ,
This is subdivided and put on a twisting machine to make a mono-flament, which is wound on a bobbin and processed into a cloth by a spinning machine. Mono-flamento used for looms such as Nishijin weave is printed according to the usual method,
Or, it is reprocessed into a mono-fragment processed into a gold-silver thread line, and a brocade fabric is made. The long fibers of this bleached burlap are not only used for the raw materials of Japanese paper, but the short fibers cut with a rotary cutter from the fibers skived by a skiing machine (29) are also used as colored fibers for the replacement jutan. It can be made by raising and fixing on the surface coated on the fiber cloth with a raising machine with a raising machine. The generally known mono-fragment composed of unbleached jute fibers is made by spraying jute fiber bundles with a mechanical oil mixed with a surfactant and applying them to a stamping machine to physically soften the fibers to form a tough fiber bundle. The isolated monofilament was thickly twisted with a yarn twisting machine to be weaved with a weaving machine to make a cloth cloth. I can't do it, sono lining,
It was limited to shoes, dongolos bags, and sewing threads on tatami mats, and its use was limited. However, when the known mono-fragment or cloth cloth is further bleached and reprocessed, its use is greatly expanded. Then, delignification and tanning of a thick mono-fragment are subjected to alkali immersion treatment by the above method,
After bleaching with a peroxide alkali, washing with water, treating with lactic acid, washing with water and drying, the thickness is thinned by delignification and tanning, and the weight is also reduced by 20 to 25% to give a pure white monofuramento. As a result, the mono-flament printed with a dye is used for interior-related wall cloths, because the initial thickness is 3-mesh, and it is made into 1-meme. Also used for clothing. Before the thinning fiber is treated with polyvinyl acetalized resin, fibrin ether or tung oil to solidify it, the brushed surface is polished and removed, and the monofragment, which is dried while stretching, is tough and is a polyamide fiber. Since it has the same tensile strength as that of, it is used as a reinforcing material for electric wires in clothing and core materials. Also, burlap cloth can be processed from light yellow to pure white by bleaching, and since it can be printed and printed on its surface, it can be used for clothing and wall cloths, leather and synthetic leather linings, clothes and ties. It is used as a reinforcing cloth for linings, is used as a surface paper for footwear, and is also used as a base for capas, handbags, and tent cloths. However, since the conventional jute monoflament or cocos cloth in this bleaching process shrinks by 30% by processing, it is necessary to calculate the width and length of cloth extra in shrinkage during processing. Also, when polyethylene powder is applied to this bleached monofragment, the waterproof property is improved by heat processing, and the general aging and deterioration of pulp and wire quality above 200 ° C does not change even at 300 ° C. As heat resistance, it is often used for resin processing. When used as a core material of polyester, urea resin, phenol, or melamine resin, the strength of the core material is increased by 15 when using an oily material or a dried product treated with a silicone resin or borane solution.
In addition, when this bleached jute fiber is spun with green ramie fiber, the production cost of the bleached burlap fiber is reduced to less than the following, so not only is it processed into an extremely inexpensive product, but also green ramie. Since the fibers themselves are not sufficiently bleached, the yellowed ones can be pure whitened by this bleaching method, which is also useful for improving the quality of the green ramie fibers. Also, as a substitute for a rope material such as Manila hemp, pure white rope can be made by bleaching. Also, long and short fibers obtained by processing fibers of banana branches are treated in the same manner as jute. The electrolytic electrode used in this electrolytic dialysis is a silicon or manganese electrode or a silicon electrode. As the diaphragm, a film obtained by laminating a fluororesin on an alumina fiber cloth or a porous polyvinyl resin is used. Urea Glycol and boric acid ester are used as a porous material for vinyl chloride resin. As the thick membrane, a membrane obtained by curing a polyvinyl resin obtained by mixing calcium glycol powder with ethylene glycol or urea glycol and then treating with hydrochloric acid is used.
Also, as the ceramic, SiO246% AL2O3
38% CaO 8% Na2O 4% Other high alumina sintered bodies are used. A fuel cell or general business power is used as this electrode power, but in order to reduce the electrolytic power, electrolytic dialysis is performed in a high pressure gas of 100 atm. At this time, a high pressure alumina ceramic or Germanium ceramics and sintered metal plates are used. This electrodialysis uses 20 volt 1 amp power,
The high-voltage electrolysis of this electrodialysis reduces the electric power to 1/10. In the fuel cell, hydrogen gas obtained by low-temperature decomposition of natural gas is used as a fuel in a phosphoric acid solution of conc, and silicon manganese or a silicon sintered electrode having a surface plated with platinum is used as an electrode. Oxygen gas sent to the anode surface Air is generally used, but a mixed gas with 5% oxygen gas is used. When monazite is attached to this porous plate sintered plate,
Gas ionization is promoted. This electrolysis power is 2.4
It is performed at a rate of Kw / 1 ton. The alkaline liquid dipping pit is made of concrete with tar pitch lining. In each pit, a glass fiber or nylon fiber bundle is used as a capillary to circulate each pit as an inverted U shape to the next pit, The last pit is drained by a pump to enter the electrolytic cell, so that the immersion alkaline lignin and tannin sugar solution are automatically moved and electrolyzed.
Then, the lignin and tannin solutions are concentrated and collected. As described above, in the electrolysis method, the wastewater is purified so that the pollution property is improved and 30-60% of the alkaline component is recovered. Further, when the bleaching ground is near the coastline, seawater liquid is used, and if the electrolyte solution of the anode chamber is used for bleaching, bleaching can be performed at a low production cost. Also, when lactic acid solution is used as a softening agent for finishing the fiber, it promotes the loosening of the fiber and decolorizes the yellow color of the fiber thinly dyed with tannic acid, and also the mud colloid deposits and peeled parts of the skin. Is peeled off,
Not only has the effect of removing the yellowish brown spots that remain when the fiber is treated with alkali only and bleached, it is also a cured fiber such as a fiber neutralized with sulfuric acid or hydrochloric acid, or a bleached product treated with glyoxal and CLO2. The curability of the fibers in is prevented. The drawback of this curability of the fiber is that when the fiber is dissociated and processed into a single fiber, the fiber is easily cut by a combing machine, and isolated long fibers are difficult to obtain, so lactic acid or organic acid is used. . Also, in the jute production area, the river area is the cultivation area, and the collected jute produced after cultivation is soaked in water and decomposed by bacteria in the water to collect soft jute. To process
30% burlap fiber waste is produced, but when these fibers are treated with alkali for bleaching and lactic acid treatment, hemp pulp weight is reduced, and as a weight loss for paper and Japanese paper Since it is used as the surface cover paper of the, the consistent work at the site is more effective. In addition, unlike the conventional method, this method performs delignification and tannin at room temperature, so that the damage of the fiber is small and the defect that the fiber becomes a dumpling fiber is compensated. Therefore, the production yield is improved by 10% by the low temperature treatment. Further, glyoxal increases the bleaching speed and hardens the fibers, and therefore it is used for reinforcing monofilament twisted yarns, and it is used as a reinforcing fiber of polyester because of its remarkable curability in mixed twisted yarns of glass and ceramic fibers.
This polyester processing becomes more effective when borane treatment or polyvinyl acetalized resin is pretreated.
Also, since this jute fiber is used as a substitute for Kozo and Mitsumata, it not only has the advantage of lowering the cost of Japanese paper, but also has a long life and does not cause aging like pulp and can be torn apart during storage. It is used for condenser paper and copy paper because it does not happen, and it can be mixed with ceramics and synthetic fibers, so it is not only used as a filter material for oil or air, or as a packing material, but also has a high sound absorbing effect. Since it is heat-insulating, it is used not only as a heat-insulating building material board, but also as a gypsum board and wall soil material, and as a concrete material. This jute filament is
It has a length of 3 to 5 meters, is compatible with raw silk, has a higher tensile force than burlap alone when entangled with fibers, and mixes well with synthetic long fibers, When you hang it on the general jute, soft 21
When unwinding with a liquid obtained by mixing the surfactant with oil or a sodium polyacrylate liquid, the fiber is not cut so a part of this method can be used for mass production. As described above, the characteristic feature of the present invention is that the conventional burlap has bristle property and is easily made into short fibers during processing because it retains a yellowish brown color, so that it is difficult to make clear coloring, and most of the burlap fibers are Since only thick twisted yarn can be processed, the cloth cloth spun from the twisted yarn is thick and heavy, and it has the drawback of being poor in heat retention and cannot be used for many purposes. In this way, we developed a technique of bleaching into pure white, did not require the boiler heating required for conventional processing, processed at a relatively low temperature, and carried out delignification and tannin by using not only caustic alkali but also peroxide, Lignin and tannin recovered from this solution by diaphragm electrolysis are used as raw materials for skin toughness and fragrances, alkaline components are recovered, and reused for alkaline treatment of jute fibers to improve wastewater pollution, and as a softening of fibers, By using machine acid, lactic acid, and monochloroacetic acid as finishing agents and neutralizing agents, the softening of fibers is utilized for single fiber dissociation, increasing the yield of long fibers and suppressing the yield of short fibers. Depending on the use of peroxide and glyoxal LO2, it is bleached to a pure white color to process it into a pure white fiber comparable to expensive green ramie fiber, thus making inexpensive clothing and fabrics. As a result, printing and printing are performed clearly, so that the use of burlap was used for grain packaging bags, but it is also used for clothing and interiors, and it is used as a raw material for washi as an industrial rough material. Not only is it used as a filter because it has good drainage, it is used as a raw material for durable Japanese paper and copy paper, but it can also be twisted by mixing long fibers with synthetic fibers and mineral fibers such as raw silk and glass fibers. Since it becomes easier and the tensile strength increases, it can be used for interiors as well as clothes and fabrics, especially as a building material,
Many applications have been developed as a reinforcing material for resin processing and electric materials, and it is an industrially useful invention because it improves the obliquity of jute production. Further, since it is also applied to the processing of banana fiber, it is useful as a pulp resource and clothing.

[Brief description of drawings]

Fig. 1 Flossy diagram of jute fiber

[Figure 2] Burlap processing process diagram

Claims (1)

[Claims] As described in the following sentence, after cultivated jute is collected according to a conventional method, it is soaked in water for fermentation and decomposition, and the jute fiber bleached with water is mixed with caustic soda solution and peroxide to remove delignification and tannin. In order to collect the filtered filtrate and centrifuge, to concentrate and recycle the lignin tannin solution, dealkalize by diaphragm electrolysis and reuse this alkali solution for delignification and tannin. Then, the dehydrated jute fiber is re-treated with peroxide, sodium percarbonate and caustic, and the filtered filtrate is electrolyzed and collected. This alkaline electrolyte was mixed with hydrogen peroxide as a bleaching solution for the fiber, dehydrated while bleaching with a CLO2 solution, and repeatedly washed with water to obtain a secondary bleached fiber.
This is soaked in a lactic acid solution or a fermented lactic acid solution, optionally treated with a monochloroacetic acid solution, dehydrated and washed with water, and organic acids and lactic acid are purified by electrolysis and reused. make. This is mixed with raw silk or synthetic fiber, which is obtained by slackening the fibers into single fibers in water using a kushiski machine.The added fibers are often long fibers and short fibers are collected and used for dry blending. To do. The mixed fibers of long fibers thus produced are twisted by a twisting machine, and wound by a bobbin winding machine, and the bristle fibers of jute are softened in advance with a lactic acid solution. Make a twisted yarn while covering it with synthetic fiber or cotton fiber, rewind it on a bobbin and spin it to make a cloth or textile, and then print or print it to make clothes, or use it as an interior building material or bed sheet. Processed products of jute fiber and processed banana fibers characterized by