Units product linen, hemp, kenaf and jute fibers
A French company engaged in processing natural fibre is trying to develop jute-based products due to environment-friendly nature of the golden fibre of Bangladesh. NatUp Fibres, a leading company based in Normandy area of France, is working on developing products based on the natural fibre jute in an effort to replace comparatively expensive flax, also a natural fibre that grows mostly in France and used to produce linen and other products. The company supplies different car components like door panels, dashboards, wheel arches, parcel shelves, backs of seats, spare wheel covers and headliners made of natural fibres like flax, hemp and kenaf meshta. But in the recent years, this European key player which is supplying the interior parts of automotive industry started using imported jute fibre from Bangladesh to make the products. They are importing around 1, tonnes of jute annually to make the products. In the most recent development, the company has set up a small production plant of jute-based products at their factory premises and, based on the performance, they would go for expansion - be it in the existing premises or in Bangladesh by forming a joint venture, Karim Behlouli, chief executive officer of NatUp Fibres, told a group of journalists from Bangladesh.VIDEO ON THE TOPIC: TOP 5 machine kenaf hemp decorticator stripping! how to remove the fiber from hemp,jute and kenaf?
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Small hemp decorticator for sale
Effective date : A process for the preparation of natural fibers for use in forming reinforced polymer composites. The process comprises fiberizing or fibrillating the natural fibers by introducing them to a hammermill that includes a rotor with hammers affixed, which uses hammers to force the material against a set of perforated screens.
The size of the screen prevents the material from leaving the process until it is ground to the predetermined size. This application claims the benefit of the Ser. This invention relates generally to the preparation of natural fibers that can be used to reinforce a polymer composite.
The present invention also relates, for example, to the use of a hammermill that forces the natural fiber material against a set of screens to fibrillate the fibers.
The use of flax or flax-like fibers in a thermoplastic resin is described in Great Britain Patent 2 A. That patent is incorporated herein in its entirety.
However, there is a need for producing generally uniform natural fibers, which can be used in producing composite compositions. In satisfying this need, agricultural waste is converted into value-added reinforcement for plastics. Moreover, there is a need for producing reinforcement natural material that is lighter, cheaper, non-abrasive and recyclable.
Plastics are usually reinforced with fiberglass fiber, talc, mica or wood flour. However, fiberglass reinforcement is expensive, heavy, and difficult to recycle and is abrasive to machinery. Recently, there has been a resurgent interest in utilizing agricultural products as feedstock for industrial applications. In this fashion, dependence on forest products is reduced.
In addition, natural resources are more sustainable and less toxic. For example, air pollution caused by burning straw is reduced. Furthermore, flax has demonstrated superior strength. The present invention provides for manufacturing reinforcement material that is less expensive, lighter, recyclable and non-abrasive to machinery.
Such reinforcement material can reinforce plastics with superior qualities to existing products. The present invention relates to a process for the preparation of natural fibers for use in forming reinforced polymer composites. The process comprises fiberizing or fibrillating the natural fibers by introducing them to a hammermill, which has hammers that have been affixed to a rotor, which uses the hammers to force the material against a set of perforated screens.
The size of the screen prevents the material from leaving the process until it is ground to a predetermined size. In a preferred embodiment of the invention, the process also includes removing the fiberized fiber from the hammermill and transporting it to a storage bin. Thereafter the fiberized fiber can be metered and fed with additives into a final mix machine, which mixes the ingredients and heats them to form a soft dough, which can be granulated or pelletized.
Either can be used with injection molding or extrusion devices. In an alternative preferred embodiment, the dough can be extruded into a final product. Preferred features of the present invention are disclosed in the accompanying drawings, wherein similar reference characters denote similar elements throughout the several views, and wherein:. In the description which follows, any reference to direction or orientation is intended primarily and solely for purposes of illustration and is not intended in any way as a limitation to the scope of the present inventions.
Also, the particular embodiments described herein, although being preferred, are not to be considered as limiting of the present inventions. Referring to FIG. These processes provide for the fibrillation and compounding of natural fibers that can be used for reinforcing plastic or polymer composites.
In one exemplary preferred embodiment, the fibrillation process 10 provides for mechanically fibrillating or fiberizing natural fibers into individual fibers or fiber bundles. The process includes providing a natural fiber such as flax, hemp, kenaf, jute or other natural fiber products.
Other fibers include oilseed and linen flax, sisal, ramie, sugar cane, bamboo, cotton, wheat straw, and coconut. Decortication is a mechanical process in which the bast fiber is separated from waste material, which is called shives. The fiber yield is dependent on many factors, including species, growing conditions and equipment efficiencies. A compressed bale of fiber is conveyed on an infeed conveyor 14 to a bale breaking device 16 that breaks it up into loose fiber and meters it into the process as needed or desired.
A conveyor 18 transports the fiber to a fiberizer system 20 , preferably a hammermill, for further processing. The hammermill 24 functions as a fiberizer that includes a rotor, which uses hammers to force the material against a set of perforated screens. The mechanical action of the high-speed hammers breaks up the fiber bundles. The size of the screen prevents the material from leaving the process until it is ground to the proper size.
A pneumatic air vacuum system removes the fiberized fiber from the hammermill and transports it to a surge bin 28 as shown in FIG.
The pneumatic air vacuum system, as shown in FIG. A duct network provides for fluid communication among the various components of the fiberizer system Also, in the embodiment illustrated, duct 38 couples the air system cyclone 30 with the fan A surge bin 28 is used to store the processed fiber. The size is variable, but generally a 3 to 5 minute capacity is used. The goal of the bin 28 is to provide a generally constant flow to the compounding process Referring again to FIGS.
Generally a separate metering system can be used for each material that is being added. For example, one for the polymer, one for fiber, one for additives. It mixes the ingredients together to form a consistent product and at the same time dries the fiber. The total mix is also preheated and discharged as a soft dough. As shown in FIG. This compounded dough is then run as shown by the left flow arrow in FIG.
Alternatively, the compounded dough can be fed directly into an extruder 48 as shown in by the right flow arrow FIG. The granules or pellets are the final product which can be sold to the injection molding or extrusion industries. In another embodiment of this invention, this aforementioned process step can also be eliminated and the dough can be extruded into a final product.
While hammermills have been used for years to reduce the size of all sorts of products, including wood and grain, this type is a precision machine that has been developed to meet a wide range of operating parameters.
It operates as a fiberizer It is believed that this is the first time a hammermill has been used successfully to break natural fiber into individual fiber bundles, and provide a generally uniform length to diameter ratio.
This ratio is important in the polymer matrix, because it is what provides the reinforcing properties of the compounded polymer product. In the operation of the hammermill 24 in the process of the present invention, various parameters or variables can be adjusted.
The amount of energy used is dependent on the size of the motor, the flow of material and the final size of the material being ground. The use of the hammermill or fiberizer 24 of the present invention provides many advantageous. The adjustable variables allow the system to be fine tuned for various natural fibers and can also be adjusted to vary the final sizes of the product. Engineering of the machine allows for the ability to quickly change many of these variables. A preferred target is a 4 millimeter length of the fiber, which produces preferred maximum strength properties.
A preferred key component of the total process is to convert the fiberized fiber and a polymer into a compounded product. Typically the reinforcing material fiber would be metered into an extruder with the polymer and additives. The heat of the extruder and the resistance of the material moving through the extruder, creates more heat that melts the whole mix together into a matrix that is formed into a final product through a dye.
This system is preferably unique in that a high speed blender is used, which uses high centrifugal forces to uniformly blend the fiber and polymer mix together. This total mix also melts into a dough like consistency. This is a batch type process that discharges into a continuous type granulating or pelletizing process.
If a typical or normal extruder is used to perform this mixing action, the friction can destroy the fiber length and the fiber may no longer be a reinforcing agent. The final result is that the fiber has become a filler with minimal strength properties.
The system variables that can be adjusted include: dwell time, RPM or speed of the rotation, temperature set points, motor load set points, variations in the recipe of input materials.
The advantages of this system include the following, The blending, because of the high speed equipment minimizes the damage to the fiber length. Therefore, the natural fiber has a short exposure period to the increased temperatures.
Long periods of exposure to heat will cause the organic degradation of the strength properties. Hence the exposure is minimized.
Moisture content of the fiber in the compounding process is very important or critical. This system also dries the fiber in the same process as the blending, so a separate dryer is not needed. While the present invention has been described and illustrated herein with respect to the preferred embodiments thereof, it should be apparent that various modifications, adaptations and variations may be made utilizing the teachings of the present disclosure.
It is intended that all these modifications are included within the scope of the claims without departing from the teachings of the present invention. Process for the preparation of natural fibers for use in forming reinforced polymer composites comprising fiberizing or fibrillating the natural fibers by introducing them to a hammermill that includes a rotor with hammers affixed, and at least one screen, wherein said hammers force the natural fibers against said screen having a plurality of openings of a predetermined size and shape.
USP true USA1 en. Polymer fiber composite with mechanical properties enhanced by particle size distribution. Method of preparing molding compositions with fiber reinforcement and products obtained therefrom. Process for making thermoplastic-biofiber composite materials and articles including a poly vinylchloride component. Thermoplastic composite lumber having reinforcing laminate of unidirectional fibers.
Method for switching between active and standby units using IP swapping in a telecommunication network. Extruder for continuously manufacturing composites of polymer and cellulosic fibres. Method, system and device for the production of components with a pre-determined surface appearance, in particular for front panels of kitchen units.
Closed loop cyclonic mill, and method and apparatus for drying and fiberizing material. System and method for providing dynamic switching functionality in a static switching environment.
Toggle navigation Jones. Our Palette. Cotton Cotton fiber grows on the seed of a variety of plants of the genus Gossypium.
Natural and organic fibers become more and more popular these years. Most of the people come to realize that nature, soft and healthy are the most important things of the textile. Hemp fiber is naturally one of the most environmentally friendly fibers and also the oldest. The Columbia history of the world states that the oldest relics of human industry are bits of Hemp fabric discovered in tombs dating back to approximately B. Hemp is called a fiber of hundred uses.
WO2016024880A1 - Bast-fiber material processing method - Google Patents
It is the cheapest vegetable fibre procured from the bast or skin of the plant's stem and the second most important vegetable fibre after cotton, in terms of usage, global consumption, production, and availability. It has high tensile strength, low extensibility, and ensures better breath ability of fabrics. It is one of the most versatile natural fibres that has been used in raw materials for packaging, textiles, non-textile, construction, and agricultural sectors. It helps to make best quality industrial yarn, fabric, net, and sacks. The first jute mill started production in Bengal in After more than years, the jute industry is now challenged by competition from alternative materials, by the recession in the international markets and by low awareness among consumers of the versatile, eco-friendly nature of jute fabric itself. It is a golden bond with the Earth, Its use is a statement about ecological awareness as it is a fully bio-degradable and eco-friendly fibre. It comes from the earth, it helps the earth and once its life is done it merges back into the earth.
French natural fibre processor working on jute products
CAUTION: For the purpose of the Sustainable Composites pages, the materials described are those from natural sources, without prejudice to the results of any future Quantitative Life Cycle Analysis QLCA which may or may not make the case for these materials being more environmentally-friendly than equivalent systems manufactured from man-made fibres and synthetic resins. The inclusion of any specific system here is not an endorsement of that product: potential users will need to fully consider each system in the context of their specific technical requirements. The value of Eco-System Services. Natural fibres for the reinforcement of polymer matrix composites are normally the bast fibres the structural fibres from plant stems . The principal plants used are flax, hemp, jute and kenaf.
The fiber is one of the most valuable parts of the hemp plant. Our biodegradable grow mats have high water retention, keeping seeds wet through germination and a light texture for roots to easily grow through. Farmers are enticed by the promise of huge profits.
US20050183243A1 - Fibrillation of natural fiber - Google Patents
The invention relates to the textile industry, and in particular to methods of processing bast-fiber materials, for example, fibers of flax, hemp, jute, nettle, kenaf and others. Various mechanical, chemical, biological, physical, physicochemical, mechanochemical methods for processing bast-fiber materials are known from the prior art to obtain a product specified by the parameters of the technological process by which the obtained fiber will be processed. In particular, the methods disclosed in the invention patents RU , RU , RU and the like can be noted. The following disadvantages are inherent in the above methods: since the processing of fibers for the purpose of mass removal of encrusting substances is carried out mainly by chemical means, the production of de-inlaid elementary fibers is accompanied by the decomposition and degradation of pectin substances and lignin, which are very valuable raw materials for many industries.SEE VIDEO BY TOPIC: Dry hemp/jute/kenaf Fiber Dehulling Machine
Due to specific advantages over synthetic counterparts, plant-based natural fibers are considered promising candidates for reinforcement in polymer composites for certain applications. This chapter deals with the classification, structure, and chemical composition of plant-based natural fibers. Some important aspects of jute fiber and its use as reinforcement in polymer composites are discussed. The use of cellulose nano fibrils as a filler in polymer composites is overviewed. Different chemical, physical, and biological methods for surface modification of natural fibers are discussed in detail.
Account Options Sign in. Foreign Agriculture. Selected pages Page 7. Page 8. Page 9. Contents Section 1. Section 2. Section 3.
A wide variety of hemp decorticator machine options are available to you, There are 1, hemp decorticator machine suppliers, mainly located in Asia. Who can cast with hempcrete? Hempcrete is a non-structural infill material, which general contractors, DIYers, carpenters, students, etc. Processing Hemp. A machine called a decorticator strips the bast from the hurd.
Hemp grow mats uk
Effective date : A process for the preparation of natural fibers for use in forming reinforced polymer composites. The process comprises fiberizing or fibrillating the natural fibers by introducing them to a hammermill that includes a rotor with hammers affixed, which uses hammers to force the material against a set of perforated screens. The size of the screen prevents the material from leaving the process until it is ground to the predetermined size.
It is produced from plants in the genus Corchorus, which see for botanical information and other uses. Jute is one of the cheapest natural fibers and is second only to cotton in amount produced and variety of uses. Jute fibers are composed primarily of the plant materials cellulose and lignin.
Fibers derived from bio-based sources such as vegetables and animal origin are termed as natural fibers. This definition includes all natural cellulosic fibers cotton, jute, sisal, coir, flax, hemp, abaca, ramie, etc. There are also man-made cellulose fibers e. Natural fibers being cost effective and abundantly available yields high potential in various industrial and commercial applications such as in the interior applications of the passenger cars, panels for partition and false ceiling, partition boards, roof tiles, coir fibers in packaging, furniture applications, as insulating materials in low energy houses, geo-textiles for soil protection and erosion control, enhancing barrier properties, composites etc.
Это был перевод рекламного сообщения Никкей симбун, японского аналога Уолл-стрит джорнал, о том, что японский программист Энсей Танкадо открыл математическую формулу, с помощью которой можно создавать не поддающиеся взлому шифры. Формула называется Цифровая крепость, говорилось в заметке, и доступна для ознакомления в Интернете.
Программист намеревался выставить ее на аукционе и отдать тому, кто больше всех заплатит. Далее в заметке сообщалось, что, хотя алгоритм вызвал громадный интерес в Японии, несколько американских производителей программного обеспечения, прослышавших о Цифровой крепости, считают эту информацию нелепой - чем-то вроде обещания превратить свинец в золото.
Формула, утверждают они, - это мистификация, к которой не следует относиться серьезно. - Аукцион? - Сьюзан подняла. Стратмор кивнул: - Как раз сейчас японские компании скачивают зашифрованную версию Цифровой крепости и пытаются ее взломать.
Над Форт-Мидом высоко в небе сияла луна, и серебристый свет падал в окно, лишь подчеркивая спартанскую меблировку. Что же я делаю. - подумал Бринкерхофф.