DESC:Form 2
THE PATENT ACT, 1970
(39 OF 1970)
&
THE PATENT RULES, 2003
COMPLETE SPECIFICATION
(SEE SECTION 10 AND RULE 13)

METHOD FOR PRODUCTION OF GREEN COMPOSITE LAMINATE PADDY FIBERBOARD/WALL

ROHIT KUMAR
33 A, Tagore Garden, Near Naraingarh Road, Ambala city,
Haryana ,Ambala, India
Contact No: 7876002778
E-mail: rohitkuma6858@gmail.com
AMRIT PARIJAT
P7, Staff Colony, Dabwali Road, Gyani Zail Singh College, Bathinda, Punjab-151001, INDIA
Contact no: 7986763811
Email id: amritparijat03@gmail.com
DR. ANUPAM KUMAR
R/o Quarter No. P7, Staff Colony, GZSCCET, Dabwali Road, Bathinda-151001, Punjab, INDIA
Contact No. 9417025296
E-mail: anup28298@yahoo.com

The following specification particularly describes the invention and the manner in which it is to be performed

FIELD OF INVENTION
The present invention generally relates to field of eco-friendly fiberboards. More specifically, it pertains to method for production of green composite laminate paddy fiberboard/was from rice straw.

BACKGROUND OF THE INVENTION
Rice or paddy is the most important food crop of India covering about one-fourth of the total cropped area and providing food to about half of the Indian population. Punjab has made tremendous progress in rice productivity and production during the past 45 years. Due to use of high yielding varieties and new technology Punjab has given the title of "Rice Bowl of India". (https://www.apnikheti.com/en/pn/agriculture/crops/cereals/rice)
Rice straw is the vegetative part of the rice plant (Oryza sativa L.), cut at grain harvest or after. It is usually burnt and left on the field before the next ploughing, ploughed down as a soil improver or used as a feed for livestock (Kadam et al., 2000). Rice straw is a major forage in rice-producing areas and is also considered as an agricultural waste. (https://www.feedipedia.org/node/557). After harvesting, the rice straw or paddy straw is generally burnt in the open fields due to shortage of time before sowing the next crop.
Environmental impacts of burning rice straw/paddy straw:
• Emission of air pollutants which results in serious deterioration of the ambient air quality, climatic changes and health problems.
• Ploughing may also propagate fungi
• Soil erosion and infertility of soil.
• Health hazards such as respiratory problems, rice miller’s syndrome, (https://ejom.journals.ekb.eg/article_118349_3b570ce80840c2beda71be381db233de.pdf)
Copper wire mesh: Copper mesh is a square weave mesh that is woven together by copper wires. It is highly pliable yet strong. Hence, it can be woven into any form and pattern with relative ease. Furthermore, it has high thermal and electrical conductivity. These properties in combination with the metal's long lifespan and corrosion resistance make it perfect for a variety of industrial applications and is easily available in the market.
(https://ferrierwire.com/5-benefits-of-using-copper-mesh/blog.html)
Bamboo sticks: Bamboo is a perennial plant known for its combined strength and light weight because bamboo sticks are hollow from inside hence makes them lighter in weight and is utilized in building of roof tops, bridges, houses, falls and floors.

Problem to be solved
Being one of the most important staple crops of the world, rice has played a vital role in slaking the calorie requirements of the masses in all the inhabitable continents of our planet. Regardless of this fact, there are many environmental concerns related to the rice production systems across the globe. One of the major problem is emission of lethal greenhouse gases due to different steps and procedures concerned with rice production and their contribution towards global warming. In order to prepare the paddy field and to eradicate waste material (rice straw/paddy straw), farmers prefers to burn rice straw.
It is well-known that environmental problems may arise from the random burning of rice straw. So, great attention has been focused on the utilization of rice straw in recent years. It has been found that rice straw can be an inexpensive natural lignocellulose resource and it has the characters of low cost, low density, biodegradability and high toughness with acceptable mechanical properties, it has the tendency to replace wood flour or fiber composites.
Existing rice straw boards, which are prepared just by the addition of rice straw and epoxy resin possesses lower strength and low water resistant properties as these are highly flexible and breakable, more prone to fire and is not water retardant, which is considered as a main drawback and as a result it limits the production as well as utilization of rice straw board by manufacturers and builders respectively.
The terms rice straw wall/ fiberboard and paddy straw wall/ fiberboard are used interchangeably in the description here.
Solution proposed by the present invention
It is the common practice of burning of rice/ paddy straw in order to clear land for the next cultivation of rice field. The rice straw is not completely burnt and is not disposed of properly and hence leads to deterioration of soil nutrients and hazardous impact on environment.
Although the use of paddy straw/rice straw as a raw material for fiber board could reduce the environmental stress. To solve the above problems caused by the existing rice straw boards, inventors of the present invention came up with the new approach of utilizing rice straw/ paddy straw as a raw material along with copper wire mesh and bamboo in formation of green composite laminate non-woven paddy wall/ fibreboard.
Further copper wire mesh is used along with rice straw waste for preparation of green composite laminate non-woven paddy wall/fiberboard. It is network of copper wires bonded together which are pliable, malleable, and has high thermal and electrical conductivity.

Commercially available fiberboards in the market are heavier in weight, less durable and low strength. To overcome the above drawbacks inventors of the present invention came up with the solution of combining rice straw/ paddy straw, copper wire mesh and bamboo in the fiberboard to make it lighter in weight. It also enhances the strength, fix-ability and durability of the fiberboard and reduces the environmental problem.

These boards are used in furniture making as well as in the construction of building and interior purposes. These eco-friendly boards are resistant towards the pests and fungus. The overall structure of board will provide hard strengthen structure which actually increases the durability of the board.
Although the use of rice straw, copper wire mesh and bamboo as a raw material for making fiberboard reduces the environmental stress such as air pollution and further, the same is not disclosed in any of the prior are patents, and journals.

Advantages offered by present invention:
Eco-friendly: Instead of burning of rice straw/paddy straw which impart harmful/negative effects on environment and results in air pollution, emission of harmful toxic greenhouse gases present invention came up with an idea of utilizing rice straw/ paddy straw along with copper wire mesh and bamboo in manufacturing of green composite laminate non-woven paddy wall/ fiberboard. This fiberboard can be further utilized in the construction purposes such as construction of building, houses, roof tops and shelters, this will solve the problem of pollution and thus makes the environment pollution free.

Cost effective: Commercially available fiberboards are costly and expensive and effects the pocket of the lay man. Production of green composite laminate non-woven paddy straw wall/ fiberboard with needle punching method makes the product/ fiberboard cost effective and affordable.

Replacement of wood: Most commonly wood is utilized for manufacturing of boards, furniture, decorative material etc. and excessive cutting of trees leads to deforestation. This innovative approach of utilization of rice straw, copper wire mesh and bamboo in the manufacturing of green composite laminated non-woven paddy wall/fiberboard solves the problem of deforestation. The rice straw fiberboard is almost close to the wood fiberboards hence wood can be replaced by rice straw fiber boards.

Light weight and high strength: The fiberboard which is commercially available in the market is heavier in weight. To solve this problem the inventor in present invention came up with the solution of incorporating rice straw, copper wire mesh and bamboo in the fiberboard to make it lighter in weight. It also enhances the strength, fix ability and durability of the fiberboard. It is easy to carry and transfer the green composite non-woven paddy fiberboard/wall due to its light weight.

The eco-friendly fiberboard/ non-woven paddy wall as disclosed in present invention, which comprises of rice straw, copper wire and bamboo is novel as per the non-disclosure in any of the prior art patents or journals. However, the related prior art is as given below:

Prior art patents:
Patent Application No: CN105200659A discloses “Antistatic rice straw fiber and hemp fiber mixed nonwoven fabric for seamless wall paper and preparation method thereof”
The above cited invention discloses an antistatic rice straw and hemp fiber mixed nonwoven fabric for seamless wall paper and preparation method thereof. The nonwoven fabric in above cited invention is comprises of 200-205 parts of rice straw, 100-104 parts of raw hemp, a proper amount of NaOH, a proper amount of water, 0.8-0.85 part of polyvinyl alcohol, 0.2-0.3 part of trifluoroethyl methacrylate, 0.2-0.3 part of dodecafluoroheptyl methacrylate, 5-6 parts of ethyl acetate, 0.5-0.6 part of seaweed charcoal, 4-4.5 parts of polyaniline short fiber, 0.6-0.7 part of epoxy resin, 0.2-0.3 part of triethylene tetramine, 0.3-0.4 part of nano poly(tetrafluoroethylene), and 0.05-0.1 part of dicumyl peroxide.
The above cited invention discloses an antistatic rice straw and hemp fiber mixed nonwoven fabric for seamless wall paper and preparation method thereof which comprises of rice straw, hemp fiber, NaOH, water, polyvinyl alcohol, seaweed charcoal and epoxy resin whereas the present invention discloses a non-woven paddy wall which comprises of rice straw, copper wire mesh, plastic sheet for lamination, and needle punching for interlocking the paddy bundle.

Patent Application No: CN104989008A discloses “Construction process of cement steel wire mesh raw soil rice straw composite wall body”
The above cited patent discloses a construction process of cement steel wire mesh raw soil rice straw composite wall body. The body of wall in present invention is made up of wire mesh mortar shell, rice straw sandwich of layer with the thickness being 200mm in the steel wire mesh mortar case, laying a lime raw soil sandwich layer with the thickness being 100mm on the rice straws in the steel wire mesh mortar case, performing compaction in layers, and repeating the steps until the wall body design height is reached.
The above cited invention discloses a construction process of cement steel wire mesh raw soil rice straw composite wall body which is made up of wire mesh mortar shell, rice straw sandwich of layer, and laying a lime raw soil sandwich layer whereas the present invention discloses a non-woven paddy wall which comprises of rice straw, copper wire mesh, plastic sheet for lamination, and needle punching machine for interlocking the paddy bundle. In the present invention entangling of straw is done with the help of needle punching machine and no binding agent such as glue, cement has been used. Hence, the present invention differs from above cited.
Patent Application No: CN100391706C “Method for manufacturing combined wall using rice/wheat straw thermo-keeping material as inner core”
The above cited invention relates to a method for producing a combined wall body using rice / wheat straw heat-insulating materials as inner cores. The above cited invention comprises cutting of rice/wheat straw into straw units by using rice straw cutter, the straw units removing fine scrap and dust are sent into a material bank for storage and are sent into a glue stirrer for glue blending, the rice / wheat straw units after glue blending are paved and are moulded, and the paved and moulded straw units are sent into a hot press for hot pressing, the rice straw heat-insulating materials for walls after hot pressing are cut and are combined with anhydrite boards or oriented strand boards, and the combined wall body using rice / wheat straw heat-insulating materials as inner cores is formed.
The above cited invention discloses a method for producing a combined wall body using rice / wheat straw heat-insulating materials as inner cores which is comprising of rice straw cutter for cutting of rice straw into straw units, a glue stirrer for glue blending, and a hot pressing machine for pressing the paved and moulded straw units, the rice straw heat-insulating materials for walls after hot pressing are cut and are combined with anhydrite boards or oriented strand boards, and the combined wall body using rice / wheat straw heat-insulating materials as inner cores is formed whereas the present invention discloses a non-woven paddy wall which comprises of rice straw, copper wire mesh, plastic sheet for lamination, and needle punching machine for interlocking the paddy bundle. Also, in the present invention no binding agent like epoxy resin, glue, cement has been used. Hence, the present invention is different from the cited invention.

Patent Application No: CN105200661A “Water-resistant rice straw fibre and hemp fibre mixed nonwoven fabric for seamless wall paper and preparation method thereof”
The above cited invention discloses a water-resistant rice straw fibre and hemp fibre mixed nonwoven fabric for seamless wall paper and preparation method thereof. The nonwoven fabric wall paper is prepared from the raw materials rice straw, hemp, a proper amount of NaOH, a proper amount of water, polyvinyl alcohol, traditional Chinese medicine residues, trifluoroethyl methacrylate, dodecafluoroheptyl methacrylate, ethyl acetate, 0.2-0.3 part of 3-glycidyloxypropyl trimethoxy silane, nano silicon dioxide, nano poly (tetrafluoroethylene), and dicumyl peroxide.
The above cited invention discloses a water-resistant rice straw fibre and hemp fibre mixed nonwoven fabric for seamless wall paper which comprises of rice straw, hemp fibre, NaOH, water, polyvinyl alcohol, traditional Chinese medicine residues, nano poly (tetrafluoroethylene), and dicumyl peroxide. The present invention discloses a non-woven paddy wall which comprises of rice straw, copper wire mesh, plastic sheet for lamination, and needle punching machine for interlocking the paddy bundle. Present invention utilizes copper mesh which enhances the strength and durability of the wall which is not disclosed in above cited article. Also, in the above cited invention fibers has been chemically treated. Hence, the present invention is different from the above cited invention.
Indian Patent Application No: 202211050763 “Rice straw based board with reinforced industrial metal waste and method of production thereof”
The above cited invention discloses a rice straw based board with reinforced Industrial metal waste and method of production thereof. The disclosed board is eco-friendly and is prepared using agricultural waste, including rice straw and industrial waste, including industrial metal wool, which are bonded together by a commercial epoxy resin. Further the method of preparation of same comprises several steps, including collection of raw material, cleaning, de-fibration, screening, addition of metal wool, application of wax, mat formation, heating, cooling, cutting of irregular edges and finally packing and preparation for dispatch for commercialization purpose.
The above cited invention discloses a rice straw based board with reinforced Industrial metal waste and is prepared using agricultural waste, including rice straw and industrial waste, including industrial metal wool, which are bonded together by a commercial epoxy resin whereas present invention discloses a non-woven paddy wall which comprises of rice straw, copper wire mesh, plastic sheet for lamination, and needle punching machine for interlocking the paddy bundle. Present invention utilizes copper mesh which enhances the strength and durability of the wall which is not disclosed in above cited article.

Patent Application No: CN1364438A “Method for producing sheet laminate”.
The above cited patent discloses a process for manufacturing sheet laminate by double folding the sheets using fold bands and by superimposing top and bottom sheets with proper superimposing width. Further, the band-shaped sheet laminated body is cut using a cutter. Basically folding and cutting of a laminate sheet is disclosed in above cited patent.
The cited patent as disclosed above is given by the applicant, however the same is not related to present invention as construction board/wall comprising rice straw waste, bamboo and copper mesh manufactured using needle punching technique is not disclosed in above cited patent.

Journals and Publications
Eduardo Souza, “Straw Bales: Building Efficient Walls with Agricultural Waste”, Articles- Arch Daily, Published on August 10, 2020.
The above cited article discloses a method of development of a building wall from agricultural wastage such as rice straw/ wheat straw. The developed wall in the above cited article comprises of rice straw or wheat straw, clay, sand and lime (optional).
The above cited invention discloses a method for developing building walls from rice straw which comprises of rice straw, clay. Sand and lime (optional) whereas the present invention discloses a non-woven paddy wall which comprises of rice straw, copper wire mesh, plastic sheet for lamination and needle punching machine for interlocking the paddy bundle. Present invention utilizes copper mesh which enhances the strength and durability of the wall which is not disclosed in above cited article hence, the present invention differs from above cited.

G. Garas & M. Allam, “Thermal performance of plastered rice straw bales and walls: a case study”, 6, 2011, International Journal of Sustainable Development and Planning Volume 6 (2011), Issue 2.
The above cited paper discloses a thermal performance of rice straw bales and walls plastered with different cement plaster mixes. A fire resistance test is conducted in the above cited paper for two complete hours on the bales using direct flame after which the flame was discontinued. According to the test results, the mix with equal parts of cement and lime showed acceptable mechanical properties. The plaster mixes was applied on a prototype straw bale wall compartment of thickness 45 cm with an aim to evaluate the thermal performance of the plastered straw bale walls in arid desert climate at the hottest month of the year in Egypt.
The above cited paper discloses a thermal performance of rice straw bales and walls plastered with different cement plaster mixes which was applied on a prototype straw bale wall compartment of thickness 45 cm with an aim to evaluate the thermal performance of the plastered straw bale walls in arid desert climate at the hottest month of the year in Egypt whereas the present invention discloses a non-woven paddy wall which comprises of rice straw, bamboo, copper wire mesh, plastic sheet for lamination and needle punching machine for interlocking the paddy bundle. Present invention utilizes copper mesh which enhances the strength and durability of the wall which is not disclosed in above cited article hence, the present invention differs from above cited.
Kapil Sihaga , Sumit Manohar Yadava , Muhammad Adly Rahandi Lubisb , Pawan Kumar Pooniac , Anil Negid and Dwarika P. Khali, “Influence of needle-punching treatment and pressure on selected properties of medium density fibreboard made of bamboo” 27 May 2021 Wood Material Science & Engineering.
The above cited article discloses a medium density fibreboard (MDF) manufactured from bamboo fibres and phenol-formaldehyde (PF) resins at different hot-pressing pressures using a novel needle-punching treatment to improve the properties of the panel. Laboratory MDF panels in above cited article were prepared by mixing bamboo fibres with 10% of PF resins. The needle-punching treatments were applied simultaneously on resonated bamboo fibres during the mat formation.
The above cited article discloses a medium density fibreboard (MDF) manufactured from bamboo fibers and phenol-formaldehyde (PF) resins at different hot-pressing pressures using a novel needle-punching treatment to improve the properties of the panel. Whereas the present invention discloses a non-woven paddy wall which comprises of rice straw, bamboo, copper wire mesh, plastic sheet for lamination, and needle punching machine for interlocking the paddy bundle. Present invention utilizes copper mesh which enhances the strength and durability of the wall which is not disclosed in above cited article hence, the present invention differs from above cited.

Commercial
Edwin R.P. Keijsers, “Sustainable building materials from rice straw” Agro technology and Food sciences group.
(https://edepot.wur.nl/50870)
In above cited presentation, Edwin R.P. Keijsers discloses that rice straw can be used for construction of particle board, medium density fibre board (MDF), straw board, straw bales, and thatched roofs and rice straw cement bonded boards.
Particle Board- use as Inner walls & sound absorbing.
Material used-
- Rice straw
- Urea formaldehyde resin
Rice straw medium density fibre board- Walls, ceilings, furniture.
Material used-
- Rice straw
- Urea Formaldehyde
- Melamine urea Formaldehyde
- Polymeric methylene diphenyl diisocyanate
Rice Straw: Straw board- Walls, Roofing.
Material used-
- Rice straw
- Without binder
- With binder
- Covered with outside layers
Rice straw: Thatched Roofs
Whereas the present invention discloses a non-woven paddy wall which comprises of rice straw, bamboo, copper wire mesh, plastic sheet for lamination, and needle punching machine for interlocking the paddy bundle. Present invention utilizes copper mesh which enhances the strength and durability of the wall and using needle punching machine for interlocking the rice straw and copper mesh which is not disclosed in above cited presentation hence, the present invention differs from above cited.

OBJECT OF THE PRESENT INVENTION
The main object of the present invention is to disclose a method for production of green composite laminate paddy fibreboard/wall.

Another object of the present invention is to disclose a rice straw fibreboard/ wall which comprises of rice straw/paddy straw, copper wire mesh and bamboo and is interlocked with the help of needle punching machine.

SUMMARY OF THE INVENTION
Present invention discloses a method of production of green composite laminate paddy wall/ fibreboard. In the present invention, a green composite laminate paddy wall is prepared using rice straw/ paddy straw, as a raw material along with copper wire mesh and bamboo which are bonded together/ interlocked with the help of needle punching method. In this a single straw is entangled with another straw with a needle punching machine and hence glue, cement, resin, adhesives material are not used for preparation of fiberboard. The method of preparation comprises steps of collection of raw material, cleaning/washing of raw material, pre-treatment with NaOH, washing, paddy dyeing, preparation of nets of copper wire mesh and bamboo, interlocking of copper and bamboo nets with the help of needle punching, layering of rice straw on copper and bamboo nets, the same is needle punched again for bonding, lamination with plastic sheet, finally packing and preparation for dispatch for commercialization purpose.
Further, Copper mesh is a square weave mesh that is woven together by copper wires. Copper wire mesh and bamboo sticks are easily available. Copper wires are pliable, ductile and malleable. Hence, good conductor of electricity and cheaper in cost as compared to other metals.
Further, utilization of rice straw in fiberboards overcomes the environmental stress as it reduces burning of rice straw. Commercially available rice straw boards are heavy in weight, less durable and are of low strength. Incorporation of rice straw as a raw material, copper wire mesh and bamboo interlocked altogether with the help of needle punching method makes the overall product lighter in weight, higher strength, more durable, flexible and stiff.
It is concluded that the overall product made by needle punching method is cost effective, lighter in weight, easy to carry and transferable, eco-friendly, more durable, affordable, flexible, water retardant, pest retardant and most importantly is of best quality with higher strength. Moreover, no harmful tools, toxic chemicals, cement, epoxy resins, glue are used for binding of product.

BRIEF DESCRIPTION OF THE DRAWINGS
Prior art figure 1: Development of a building wall from agricultural wastage such as rice straw/ wheat straw
Prior art figure 2: Flow chart of medium density fibreboard (MDF) manufactured from bamboo fibers
Prior art figure 3: Particle Board
Prior art figure 4: Rice straw medium density fibre board
Prior art figure 5: Rice Straw: Straw board
Prior art figure 6: Rice straw: Thatched Roofs
Figure 7: Fibreboard/wall of present invention
Figure 8: Felt needle punched non-woven sheet
Figure 9: Natural rubber latex coated non-woven composite sheet

DETAILED DESCRIPTION OF THE INVENTION
The present invention discloses method of production of green composite laminate non-woven paddy wall/fibreboard. The Eco-friendly paddy fiberboard will enhance the overall strength, fix ability and durability of the board. Further the board comprises of rice straw along with copper wire mesh and bamboo stocks. The overall process of making board is simple and cost effective.
Material used
- Rice Straw/paddy straw- Rice straw is a residual byproduct of rice production at time of harvest. Rice straw contains on average 30-45% of cellulose, 20-25% of hemicellulose, 15-20% of lignin and 60-80% wt% silica. Rice straw was procured from directly from the farmers.
Composition %w/w of rice straw
Cellulosea 34.12 ± 3.5
Hemicelluloseb 28.45 ± 3.2
Lignin 18.12 ± 3.02
Ash 7.45 ± 0.318
Extractives 11.93 ± 0.113
a Based on total glucan
b Based on total xylan and other C5 sugars
- Copper wire mesh- Copper mesh is a square weave mesh that is woven together by copper wires. These are pliable yet strong, ductile, flexible and malleable. Copper wire is easily available in the market.
- Bamboo sticks- Bamboo is a perennial plant known for its strength and light weight and is utilized as a building material.
Method of preparation
The method used for the production of green composite laminate non-woven paddy wall/ fibreboard comprises of following steps:

Step-1 Procurement of rice straw: Paddy/rice straw was collected from the local rice farmers, Village Sarsini, Ambala Chandigarh Highway, District Mohali, Lalru, India.

Step-2 Cleaning of rice Straw: After collection of raw material directly from the farms, the raw material is washed with tap water to remove all impurities like dust, dirt and fine particles from the rice straw.

Step-3 Chemical treatment: Paddy/rice straw waste is further treated with NaOH (Sodium hydroxide) solution for 30 minutes, which softens the plant tissues. Further, the washed straw is also treated with flame retardant chemical i.e., 7-10% Ammonium bromide solution (according to weight of sheet).

Step-4 Dyeing and drying: The chemically treated paddy/rice straw was further dyed with dyeing solution containing 1% reactive dye, 2g Sodium chloride (NaCl) and 1.5g sodium carbonate (Na2Co3) and about 10gm of rice straw in dye solution for about 10-15 minutes at 30-40oC temperature to impart colour to the straw. Further, the same is washed and dried under sunlight for about 3 hours to remove all the moisture content from the same.

Step-5 Willowing: The dried rice straw further passes through willowing machine twice to open up and for individualization of rice straw fibers. Willowing also remove impurities and only pure fibers free from any kind of impurities are used in next processing steps.

Step-6 Bamboo and copper nets: A net was prepared from the bamboo sticks and then copper wire mesh was attached to the bamboo sticks and are interlocked by needle punching machine. The bamboo sticks were procured from Ambala City, Punjab.

Step-7 Sandwich layer of rice straw: Bamboo and copper wire nets were sandwiched in between the rice straw layers. Rice straw layers were applied on both sides of bamboo and copper wire nets.

Step-8 Felt needle punching method:
Felt Needle punching is a process of bonding nonwoven web structure by mechanically interlocking the paddy straw. In present invention, coir needle felt machine is used for needle punching the rice straw and for preparation of rice straw based nonwoven wall ,straw mattress, straw carpet, straw insulation pad, geotextile product. The felting Needle catch the paddy straw on the surface batt and push them into the center densifying the structure and producing strength through entanglement. Felting needling can be done on both side of the paddy straw. Needle board will move up and down so that the paddy will entangled to each other and converted to the nonwoven sheet. After preparing the needle punched non-woven sheet, it is feed to thermal bonding machine for lamination i.e., in order to apply natural rubber on it.

Step-9 Lamination:
Natural rubber latex is sprayed on both the sides of nonwoven wall. Natural rubber is latex of the rubber plant, which is cultivated in South India on large scale, particularly in Kerala. The rubber latex collected from the rubber plants is very dilute and roughly contains only 25% solid rubber and rest is water. In present invention, sulphur, zine oxide, antioxidants (TDQ), Accinex ZDC, Accenture ZMBT, dispersing agent, water etc. are put in the Ball mill and mixed and ground for 48 hours. Latex is poured into the mixing machine and caustic potash solution, stabilizer etc are mixed. The filtered solution from the ball mill is poured slowly to this solution and stirred well. The latex compound is sprayed from the top and bottom surface of the nonwoven wall and then heated to 60° centigrade for 20-30 minutes. Natural rubber latex is sprayed manually or machined onto a sheet and then passed through two heavy metal rollers.

Step-10- Hydraulic Pressing:
The composites sheets are then compressed using a hydraulic compressor to achieve a uniform thickness. The composite was then oven dried at a temperature of 120°c for 15 -20 minutes.

Step-11 Packing and dispatch: Finally, a composite wall having rice straw nonwoven sheet, micro copper wire and bamboo sticks in sandwich form is ready. The paddy fiberboard/ walls are packed and are further prepared for dispatch.

The rice straw based composite fiberboard/wall as disclosed in present invention is corrosion resistance, stiff, possesses higher strength, lesser in weight, less tooling requirement and cost effective, eco-friendly, flame retardant and more durable. Further the same is easy to transfer owning to light weight of the same.
Present invention is novel as evident from non-disclosure in the prior art. The novelty of present invention resides in utilization of rice straw, copper wire mesh and bamboo in manufacturing of non -woven paddy wall/ fiberboard.
The present invention discloses a green composite laminate non-woven wall/ fiberboard which is made from rice straw, copper wire mesh and bamboo. Due to utilization of rice straw, copper wire mesh and bamboo in fiberboard/ wall as a result, it becomes eco-friendly, economical and efficient. The rice straw, copper wire and bamboo is cheaper and easily available due to which the invention has economic significance. Technical advancement lies in disclosure of green composite laminate non-woven wall/ fiberboard which comprises of rice straw, copper wire mesh and bamboo. Technical efforts lies in utilization of copper wire mesh and bamboo for board formulation along with rice straw, which enhances the strength, durability, flexibility of the non-woven fiberboard and makes the product lighter in weight
There is no disclosure of such board in the prior art which makes it clear that it was not obvious to persons skilled in the art. The method of making new type of fiberboard from rice straw, copper wire mesh and bamboo is less time consuming, low cost, easily available and lighter in weight.
The present invention will boost the furniture industry as well as will play a crucial role in construction of buildings and interior purposes. The fiberboard made from rice straw, copper wire mesh and bamboo is affordable, cost efficient and easily available in the market.
,CLAIMS:We Claim

1. A method for production of green composite laminate paddy wall/fiberboard wherein the same comprises interlocking of rice straw/paddy straw, copper wire mesh and bamboo with the following steps-
- washing rice straw with tap water to remove dust, dust and fine sand particles;
- treating rice straw with sodium hydroxide (NaOH) solution for 30 minutes;
- treating rice straw with 7-10% flame retardant chemical i.e., ammonium bromide;
- boiling 10gm of rice straw at 30-40oC for 10-15 minutes in dyeing solution containing % reactive dye, 2gm sodium chloride (NaCl) and 1.5g sodium carbonate (Na2CO3) to impart colour to the rice straw;
- washing and drying the rice straw under sunlight for about 3 hours to decrease the moisture content;
- passing the dried rice straw through willowing machine twice to open up and for individualization of fibers;
- preparing net of copper wire mesh and bamboo sticks by interlocking the same with needle punching machine;
- sandwiching bamboo and copper wires net in between rice straw layers;
- felting needling on both the sides of rice straw using coir needle felt punching machine;
- lamination by spaying natural rubber latex on both sides of the rice straw based non-woven wall and heating to 60°C for 20-30 minutes;
- compressing the composite sheets using hydraulic compressor to achieve unique thickness;
- oven drying the composite at 120°c for 15 -20 minutes.

2. The method as claimed in claim 1 wherein the rubber latex is mixed with sulphur, zinc oxide, antioxidant (TDQ), accinex ZDC, accenture ZMBT, dispersing agent, water, caustic potash solution and stabilizer in ball mill prior to spraying over the rice straw board.

3. The rice straw based green composite board prepared by method disclosed in claim 1, wherein the same is flame retardant, corrosion resistance, light weight, cost effective and possesses higher strength.