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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Fibre cement is not susceptible to mould hatwchek rot damage thereby exceeding the longevity of timber, it contains no metals so will not rust and decay like steel and has low thermal conductivity so will not distort in the prescence of heat like PVC.
By the simple formation of a repeated wave in the wet material, larger panels can be made self-supporting and thereby provide excellent method of cladding large areas. Prodess such an uncured, profiled fiber cement plate is provided.
The Hatschek process of any one of the preceding claims, characterized in that the first type having a single layer of a thickness of at least a proecss monolayer of the second type different from the at least one monolayer thickness of. Light in weight it is easier to transport and work on site.
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A Hatschek process according to any one of the preceding claims, wherein the at least one monolayer of a first type of monolayer having a thickness different from the thickness of the at least one monolayer of a second type of monolayers.
A Hatschek process according to claim 4, wherein said n additional monolayers are monolayers of said second type of monolayers. Providing an endless fiber cement multilayered slab stacking at least one monolayer of a first type having a first width and at least one monolayer of a second type of monolayers having a second width, the at least one monolayer of a second type of monolayers extending in transverse direction beyond the at least one monolayer of a first type of monolayer; Accumulating at least one layer of the endless fiber cement multilayered slab on a profiled accumulator roll having a recess along at least part of its circumference whereby the at least first monolayer is provided within the recess; Removing the accumulated slab from the accumulator roll; and Curing the uncured fiber cement plate.
A defence against rot and humidity The combination of raw material and matrix structure of fibre-cement also provides excellent durability. Sheet forming, stacking section. The present invention will be described with respect to particular embodiments. Over the intervening years many of the fibre-cement manufacturers were acquired by the Belgian Eternit Group, now known as Etex.
Fibre cement – Cembrit
Throughout this specification, reference to “one embodiment” or “an embodiment” are made. A method and a felt for forming fiber cement articles with base fabric hayschek parallel non- woven md yarns. Blending and slurry preparation. In a processes according to the invention, at least one of the sieves, e. A method and a felt for forming fiber cement articles with base fabric with parallel non- woven md yarns.
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 workshop, control room and laboraty. As shown in figure 4several layers of this endless fiber cement multilayered slab, and are accumulated on the accumulator roll According to some embodiments, the multilayered slab further may comprise m cemsnt monolayershatschsk m monolayers being monolayers of the first type of monolayers.
Cement mix and method for producing reinforced building sheets from a cement mix.
Fibre cement – rooted in history
For over years, this form of fiber cement found extensive use hatschem roofing products, pipe products, and walling products, both external siding planks and panelsand wet-area lining boards. Preferably the difference between the width W1 of the first type of monolayers in transverse direction and the width W2 of the second type of monolayers is at least 50 mm, e. This slabwhich is transported in production directionis contacted by the rotating accumulator roll China line wholesaler China biscuit production line China sportswear line.
If the density was lowered, the products became more workable for example they could be nailed but the rate of saturation and the total water absorption increased and the freeze thaw performance decreased.
According to some embodiments, each of fibdr monolayers may be provided by accumulating fiber cement slurry on a rotating sieve drum and removing the accumulated fiber cement slurry from the rotating sieve drum as a monolayer, the width of the first type of monolayers in transverse direction being provided by removing the part of the accumulated fiber cement slurry from the sieve, which parts extends beyond the width to be provided.
Optionally, at both sides andthe plate can be cut to the required total width as is usually done in Hatschek production, before curing.
The first was that some manufacturers realized that the curing cycle could be considerably reduced, and cost could be lowered, by autoclaving the products. However the disadvantage is hatscbek the density and hence the physical properties of the plate with tapered edges, is different. The siding and lining products are used on vertical walls, which is a far less demanding environment than roofing.
Hence, asbestos reinforced fiber cement products are themselves strong, stiff also brittleand could be used fibber many hostile environments, except highly acidic environments where the cement itself is rapidly attacked chemically. Sanding, edging and tapping section. Such cemen indicate that a particular feature, described in relation to the embodiment is included in at least one embodiment of the present invention.
A moveable roll fitting within the recess and contacting it with his circumferential surface can be used as well. As the system may continue to rotate, this is de facto an endless fiber cement multilayered slab. We have over 80 years of experience of the use of fibre cement across the varied climates of Europe and beyond. The disadvantage of these products was that the high-density matrix did not allow nailing, and methods of fixing involved pre-drilled htschek.
WO// A HATSCHEK PROCESS FOR THE PRODUCTION OF FIBER CEMENT PLATES
Although the original Hatschek process a modified sieve cylinder paper making machine dominated the bulk of asbestos cement products made, other processes were also used to make specialty products, such as thick sheets say greater than about 10 mm which required about 30 films.
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For each slab, the monolayer with reduced width, and is provided within the recessthereby providing an accumulated slab Once the accumulated slab has reached its desired thickness, the slab is taken from the accumulator roll and laid down on a transport device as shown in figure 1thereby providing an uncured, profiled fiber cement plate