HATSCHEK PROCESS FIBER CEMENT PDF
Process Making Fiber Cement old type and improvement. Asbestos fiber cement techhology about years ago, Ludwig Hatschek made the. cement plates obtained using such processes. Background of the invention. [ ] Hatschek processes for the production of fiber cement. A Hatschek process for the production of profiled fiber cement plates is provided. The process comprises the steps of: Providing an endless fiber cement.
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Field of the invention The present invention relates to Hatschek processes for the production of fiber cement plates, and fiber cement plates obtained using such processes.
As such an uncured, profiled fiber cement plate is provided. It is understood that also alternative sequences, with the sieve drum positioned not in the first station but in one of the second, third or fourth position in the rotating drum sieve train can be used. Such references indicate ahtschek a particular feature, described in relation to the fiiber is included in at least one embodiment of the present invention.
Sheet Making System Premixer,Round sieve cylinder cage system,Machine head system,Board blanket catcherSuper high pressure water cutting system,4 position stacker system,Four- position demoulding system,lift platform system,Pump, motor, reducer, bearing and so on. Typically rectangular parallelepiped-shaped plates are formed. The independent and dependent claims set out particular and preferred features of the invention. However the disadvantage is that the density and hence the physical properties of the plate with tapered proxess, is different.
Fibre cement – rooted in history
Pre-curing and template restaking section. The great advantage of this development was that cellulose fibers are hollow and soft, and the resultant products could be nailed rather than by fixing through pre-drilled holes. China soap production line China clearance lines China led light production line. Fibre cement – a building material with many strenghts Man made PV A fibres have long since replaced the mineral fibre, and other solids are now added to the slurry to furnish differe nt performance characteristics.
The first was that some manufacturers realized that the giber cycle could be considerably reduced, and cost could be lowered, by autoclaving the products. Cfment to some embodiments, the n additional monolayers may be monolayers of the second type of monolayers.
The Hatschek process according to claim 11, wherein the slurry is removed by spraying water pprocess the slurry to be removed. Imprinted water-permeable cement concrete ground structure with aggregate exposed on surface, and manufacturing method thereof.
Hatschek process fiber cement board production line
This means it can be moulded into 3 dimensional shapes, can be embossed and because the fibre matrix supports the cement and other solids, can be far thinner than concrete. Because the matrix of asbestos reinforced roofing products was generally very dense specific gravity about 1.
Combined with keel and filler, it also can used for some framework light board system construction, high-rise building, old building, old building renew, light type proceas, control room and ifber. A1 Designated state s: Hatschek processes for the production of fiber cement plates are well known in the art.
EP EPA1 en Cement mix and method for producing reinforced building sheets from a cement mix. The above objective is accomplished by processes according to the present invention. The sieves fber aligned one fibsr the other in such a way that on the endless beltthe monolayer with the smallest width W1 is encompassed, or in this case covered, by the other monolayers, in this embodiment the other three monolayersandwhich have all a substantially identical width W2.
This absence ensured the fresh slab to be picked up by the accumulator roll immediately after removal of the previous accumulated slab. CN CNB en Preferably the difference between the width W1 of the first type of monolayers fbier transverse direction and the width W2 of the second type of monolayers is at least 50 mm, e. CN CNB en.
A Hatschek process according to claim 4, wherein said n additional monolayers are monolayers of said second type of monolayers. The fiber cement slurry typically comprises water, process or reinforcing fibers which both may be organic fibers typically cellulose fibers or synthetic fibers polyvynilalcohol, polyacrilonitrile, polypropylene, polyamide, polyester, polycarbonate, etc.
This obstruction can be obtained by providing a paint, typically a water resistant paint to the zone of the sieve to be prevented of accumulating slurry, or by providing a water impermeable tape or liner. A Hatschek process according to any one of the preceding claims, wherein said accumulator roll having no recess in axial direction along at least 40 mm of its circumference.
Slurry ceent apparatus for fiber-reinforced structural cementitious panel production. Water Supply and Drainage Equipment. EP EPB8 en The same reference signs refer to the same, similar or analogous elements in the different figures. According to some embodiments, the multilayered slab further comprises n additional monolayersn being an integer of at least 1, the width of each of the n additional monolayers in transversal direction may be more than the first width, and wherein each of the n additional monolayers extending in transverse direction beyond the first monolayer.
After Production Process Composition: The process according to claim 12, characterized in that the stacking roller having a recess in the axial direction along the entire circumference of the upperthe process further comprises at the start of pdocess stacked multilayer endless fiber cement plank at least one layer deposited on the profiled roll, so that the use of a multilayer endless fiber cement plank at least one layer of the contacts in the recess stacking said roller means.
A moveable roll fitting within the recess and contacting it with his circumferential surface can be used as well. As such a fiber cement multilayered slabas shown in figure 3is provided wherein the first monolayer is covered by the three other monolayers.
A Hatschek process according to any one of the preceding claims, wherein said multilayered slab further comprises n additional monolayersn being an integer of at least 1, said width of each of said n additional monolayers in transversal direction is more than procsss first width, and wherein each of said n additional monolayers extending in transverse direction beyond the first monolayer.
Autoclave And Drying Board blanket is sent to autoclave to be steamed by winch after demoulding, steaming process include pressure increasing, pressure stablization and pressure release, pressure stablization is most important, which lasts hous, pressure 0. Asbestos, although it is an inorganic fiber, can be”refined”into Asbes, They are stable at high temperatures.
Random and natural surface effects can be achieved but with the consistency of a production line giving superb levels of control and cost efficiency. The width of the sieve is the width W2 of the monolayer which will be formed on the sieve surface when the slurry is sucked from the outside of the sieve towards the inner side of the sieve.
The uncured, profiled fiber cement plate obtained have a width mm, a maximum thickness of 6.
WO// A HATSCHEK PROCESS FOR THE PRODUCTION OF FIBER CEMENT PLATES
As an alternative set up shown in figure 7for the first rotating drum sieve in production directionat both ends in axial direction, a zone and of the sieve sprayed by a water spraying devicespraying water to the zones and Since silica, even when ground, is much cheaper than cement, and since the autoclave curing time is much less than the air cured curing time, this became a common, but by no means universal manufacturing method.
Products Name with link. A cross section of the endless fiber cement multilayered slabobtained on the transport device is shown in fibdr 3. The accumulator roll, with an approximate circumference of mm is provided with this recess along mm, leaving a zone of the circumference with length of mm without recess.