The horizontal tapping valve shall conform to the applicable requirements of awwa standard c509. Rubber tapping is the process by which the latex is collected from a rubber tree. This technology allows the superscrew to be installed regardless of. Its specially designed double joint gasket makes a firm grip against the pipe, and the safety collar ensures no water escapes from the blade access point. The latex consists of an aqueous suspension of small. Thailand to increase latex production, land productivity and tapping.
Microsoft word the tapping solution by nick ortner. Set the cover plate between the stationary base and rail assembly. Currently, natural rubber on the world market is competed by synthetic rubber, which is derived from oil products. Some natural rubber sources, such as guttapercha, are composed of trans1,4polyisoprene, a structural isomer that has similar properties. Tapping can be done on the lathe by power feed or by hand. The ethylene gaseous stimulation has been introduced by rubber smallholders in southern. India r ubber is a crop of primary importance for tripura, which has about 67,700 ha under cultivation. An average rubber tree yields 19 pounds of rubber latex annually, and it requires 700,000 rubber trees to supply alliance each year with natural rubber. Hevea brasiliensis, tapping, panel management, latex yield, tapping panel dryness tpd. In sao paulo, the rubber tree is tapped for ten or eleven months a year, with. After tapping, the cut dries, and latex stops flowing in an hour or two.
Trees must be approximately six years old and six inches in diameter in order to be tapped for latex. Growth and production of rubber to refer to or to cite. Regardless of the method, the hole must be drilled with the proper size tap drill and chamferred at the end. Types of polyisoprene that are used as natural rubbers are classified. Most rubber in everyday use is vulcanized to a point where it shares properties of both. Introduction rubber hevea brasiliensis is a fastgrowing upright tropical tree crop which is mainly cultivated for its production of latex, a milky plant liquid, which serves as a basis for various rubber products. If you move the pdf to a new location, the attachments automatically move with it. It is an indigenous tree of tropical rainforest of amazon basin of brazil. An incision is made in the trees bark, which cuts through the latex vessels, from which the product then flows. Move the file about half the width of the file for each stroke and continue filing, using 30 to 40 strokes per minute until the surface is. Eft is a form of psychological acupuncture that uses light tapping with your fingertips instead of inserting needles to stimulate traditional chinese acupuncture points.
Highly efficient and reliable internationally patented new automated portable machine for tapping rubber for the first time in the world. Click to order official mission rubber product literature and documentation. Environmental and social constraints of plantation crops. Slaughter tapping is an obsolete method of extracting large quantities of natural latex from rubber trees in a forest environment. Rubber is an important commercial agricultural product, collected from the latex of the tree hevea brasiliensis. They typically reach 2030 metres in height on rubber plantations, and are able to produce commercial quantities of latex at about 7 years of age, depending on climate and location. Description material quantity 14 16x16 18 20 24 1 tapping sleeve front cast ductile iron 1 1 1 1 1 2 tapping sleeve back cast ductile iron 1 1 1 1 1 3 mj side gasket rubber 2 2 2 2 2 4 mj end gasket rubber 2 2 2 2 2 5 mj split gland half cast ductile iron 4 4 4 4 4. Design and fabrication of automatic rubber tapping machine department of mechanical engineering page 3 abstract. Rubber yield is higher in kerala, but quality is comparable between the two states plantations. The roots of rubber usage stretch back to the native people in central america and the west indies, but took root in western societies as new processes were created to commercialize rubber. When the tapping starts the coconut shells or bowls are placed on an iron string around the trees. Bhrt2000 rubber tapping machine rtm with the introduction of the motorised rubber tapping machine bhrt2000rtm, we have made the highly skilled rubber tapping job, an easy job through automation.
Latex is obtained from the bark of the rubber tree by tapping. Tapping panel dryness trees, wind damage and absent trees are major factors for the loss of tapping rubber trees in the rubber plantations. Ethephon, ethylene gas, inorganic phosphorus, rubber tree, sucrose. The biological function of this latex is still obscure. The latex is harvested by slicing a groove into the bark of the tree at a depth of a quarter inch with a hooked knife and peeling back the bark. Studies on rubber hevea brasiliensis trees exist plant. Rubber tapping is the process by which latex is collected from a rubber tree. Mar 26, 20 rubber tapping needs to be done effectively to maximize quantity and quality of latex from a tree. Tapping is the periodical removal of thin slices ofbark to extract rubber latex. It is the second largest rubberproducing state after kerala. The rubber board has developed a new system of tapping in which tapping can be done on only onefourth the circumference of the tree, instead of the present half spiral. Rubber board introduces a new system of tapping the hindu. The aim of tapping is to cut open the latex vessels in the case of trees tapped for the first time or. Tapping panel diagnosis, an innovative onfarm decision support.
The ghana rubber estates ltd grel has rubber tree plantations estimated at about,000 hectares, out of which 4,800 hectares are over aged and under tapping and. The collector makes a thin, diagonal cut to remove a sliver of bark. Rubber draining and tapping knife by bureau of indian standards. It takes about six years for a rubber tree to grow to a point where its economical to harvest the sap, which is called latex. Using selftapping screws, fasten the cover plate to the stationary base spacer channel. Tapping a rubber tree is fairly a manual process which involves workers cutting the trees as pictured and allowing the sap to drip into a collection container. The study was conducted from so called early tapping start at 40, 45 cm. Intensive tapping is generally done on old rubber trees for a few years prior to their removal. Tapping a rubber tree latex glove manufacturing process. Medan tapping of a 23yearold rubber tree on a plantation in malaysia circa 1910. Rubber tapping needs to be done effectively to maximize quantity and quality of latex from a tree.
Jan 18, 2017 rubber tapping is the process by which the latex is collected from a rubber tree. Of all of these trees, the best rubberproducing tree is h. Among the ergonomic factors present in rubber tapping process include age of the trees, height of tapping areas, number of area being tapped, uneven. Information and translations of rubber tapping in the most comprehensive dictionary definitions resource on the web. Tapping means to make a cut in the bark of the rubber tree to harvest the latex. Rubber is useful because of its invaluable qualities such as elasticity, resistance to water and. Pdf tapping panel diagnosis, decision support tool for.
The results showed that there were six kinds of existing plant types of. Automatic rubber tapping system arts automatic tapping machine or arts is an automatic latex harvester attached to the tree with the concept of bark incision. Jan 15, 2018 the rubber board has developed a new system of tapping in which tapping can be done on only onefourth the circumference of the tree, instead of the present half spiral. In india there is a huge demand for rubber as it is used in the manufacturing many products. This video, made in conjunction with the indonesian rubber research institute, explains the key. You can open these files for viewing, edit the attachments, and save your changes, as permitted by the document authors. Existing plant types of rubber tree after planting and available tapping tree were investigated, and there were about 28 rubber plantations with different tapping years of 8 varieties catas73397, catas879, catas72059, pr107, rrim600, gt1, ina873, 93114in south china. When tapping of renewed bark on basal panels becomes uneconomic, new cuts are opened at higher levels, 180 cm from bud union or even higher.
Of all of these trees, the best rubber producing tree is h. Natural rubber, also called by other names of india rubber, latex, amazonian rubber, caucho or caoutchouc, as initially produced, consists of polymers of the organic compound isoprene, with minor impurities of other organic compounds, plus water. Free art print of tapping latex from a rubber tree. Tapping is a process of controlled wounding during which thin shavings of bark are removed. Thailand and indonesia are two of the leading rubber producers. Superscrew is a flexible rubber splice to screw on to the belt as an alternative to vulcanizing. When the bark of the hevea tree is partially cut through tapped, a milky liquid exudes from the wound and dries to yield a rubbery film.
The machine is capable to perform the tapping task automatically according to the programmed time. The impact of ethylene gas application on youngtapping rubber trees. This latex rubber is harvested from trees through a process called rubber tapping. Tapping and stimulant applications are an attempt to increase latex yield. Hot tapping saddle hts cascade plc the new home of. Adoption of different tapping systems in the rubber industry of sri. Grasp the file handle in the left hand and support the file point with the right hand finger. Fabrizio mancini, president, parker chiropractic college meridian tapping fans will find the book extremely valuable, because it presents a new approach to tapping that brings forth the.
Tapping sleeves and valves revised january 2016 33 12 16. When they collec, they take the bowl out to empty properly. Pdf tapping panel diagnosis, decision support tool for more. Natural rubber comes from the havea brasiliensis tree, which grows in tropical regions. Tapping is the process of cutting a thread inside a hole so that a cap screw or bolt can be threaded into the hole. Tapping is the most costly activity in natural rubber production and the shortage of tappers is a serious problem in rubber plantations in sri lanka.
Apply light pressure and push the file forward to its full length. How the early dissemination of rubber seeds across the globe was the key to rubbers success. Of these investigated varieties, available tapping trees per 100 trees of rubber plantation of pr107at the 1st, 12th, 14th, 16th, 20th, 24th tapping year were 96, 67, 70, 75, 66, 46 trees in hainan. Pdf tapping is the most costly activity in natural rubber production and the shortage of tappers is a serious problem in rubber plantations in sri. The sap of rubber trees contains a very high concentration of latex which is used to make rubber. Ii growth and production of rubber willy verheye opening up of the same cut which increased the flow of latex wound response, the best time to tap, and the regeneration of the bark, which could then be retapped. Rubber latex is a stable dispersion of polymeric substances in aqueous medium and is essentially a two phase system.
This liquid sap will be processed and mixed with other chemicals to make latex concentrate. The latex is harvested by slicing a groove into the bark of the tree at a depth of a. Latex quality and yield parameters of hevea brasiliensis willd. Natural rubber is an elastomer and a thermoplastic. Click to download pricing for any product, directly from our products page. Ready rub and flow more ethrel 2 chloro ethyl phosphonic acid this is applied 67 days before tapping. Later, granulated and various rubber grades were identified. No one does success like jack canfield, and tapping into ultimate success is sure to be a resource for years to come. Influence of age and girth at opening on rubber yield.
The valve interior and exterior shall be epoxy coated at the. The tapping on these designated points on the face and body is combined with verbalizing the identified problem or target followed by a general affirmation phrase. All tapping valves, 3 inches through 12 inches nps, shall be ductile iron body, resilientseated, nutoperated, nonrising stem gate valves suitable for buried service. A rubbertapping robot forest navigation and information collection system based on 2d lidar and a gyroscope article pdf available in sensors 199. Pdf adoption of different tapping systems in the rubber industry of. Rubber tapping is still carried out in much the same way it has been for centuries.
Rubber tapping is the harvesting of the sap of rubber trees, particularly one species that originates in south america, hevea brasiliensis. Tapping takes place every other day, and each tapping yields about 2 ounces 56 grams of the substance. Hot tapping saddle hts the cascade hot tapping saddle is a clever and simple way to make connections in a water supply network. Nov 03, 2012 tappingharvesting in rubber is known as tapping. Prior to commercial exploitation of latexbearing trees such as hevea brasiliensis in the amazon basin and funtumia elastica in the congo, native populations limited harvesting to nonlethal tapping of the latex. Rubber board introduces a new system of tapping the. Two rubber seals form a tight hold against the blade which makes it perfect from drilling into the main, once the drill is retracted the blade simply slides into place, enabling the drill to then be removed from the fitting. Rubber is the overall name given to polymers that can stretch and then return to their original shape after manipulation. It is the process of controlled wounding with theshaving of bark removed. If you open a pdf that has one or more attached files, the attachments panel automatically opens, listing the attached files.