Needle-punched non-woven fabric water preventing felt and preparation method thereof

Abstract

The invention provides a needle-punched non-woven fabric water preventing felt and a preparation method thereof. The method comprises the following steps: fibers which are opened by an opener and carded by a carding machine are stacked into a plurality of non-woven fiber layers from bottom to up, and at the same time, a powder sprayer which is arranged along with a lapping machine sows materials which compose a cement based material layer between two up and down adjacent non-woven fiber layers in the plurality of non-woven fiber layers, when a layer of the non-woven fiber layer is spread by the lapping machine, a layer of cement based material layer is sown by the powder sprayer, and sowing of the cement based material layer for the non-woven fiber layer at the top layer is stopped; obtained fluffy bodies for needle punching are sent to a needle loom by a conveying curtain for needle punching, so that the non-woven fibers of the plurality of non-woven fiber layers traverse the cement based material layer as well as mutual entanglement and connecting are carried out; and at the same time, the materials which compose the cement based material layer permeate and are positioned in thenon-woven fiber layer, in order to obtain the non-woven fabric water preventing felt. The product has good self entanglement effects; the integral structure is simple, and industrial efficient production requirements are satisfied; displacement or seepage to the outside does not appear; and resources are saved.

Description

technical field [0001] The invention belongs to the technical field of water-blocking materials and their preparation, and in particular relates to a needle-punched non-woven fabric water-blocking felt, and also relates to a preparation method thereof. Background technique [0002] The aforementioned needle-punched non-woven fabric water-blocking felt can be used in agricultural ditches, aquaculture ponds, municipal facilities projects, urban and rural sewage treatment projects, tunnels, subways, highway slope protection, underground civil defense projects, underground garages of urban buildings, construction Roofs, military facilities such as aircraft hangars, reservoirs, swimming pools and the like. In the early days, for water-blocking and anti-seepage not limited to the occasions listed above, brushing protective film, laying waterproof coiled material, pouring surface protective layer, etc. were generally used. High cost, picky about the environment and climate of the ...

AI Technical Summary

Problems solved by technology

Although this patent application scheme has the advantages described in paragraphs 0016 to 0019 of the specification, it has the following shortcomings: one, due to the need to use the upper fabric layer, that is, the upper fabric and the bottom fabric layer, that is, the bottom fabric, and the mesh fiber fabric layer and The cement-based composite material is arranged between the upper and lower fabric layers. Although the fiber threads connect the upper and lower fabric layers and the mesh fiber fabric by needle punching or sewing, it is not a real needle punched nonwoven fabric. cloth water-blocking blanket; second, due to the relatively complex structure, it is difficult to put it into industrial production; third, because the cement-based composite material located between the upper and lower fabric layers is only controlled by the upper and lower fabrics, and the mesh The fiber textile layer and the fiber thread can hardly locate the cement-based composite material, so the cement-based composite material will move, causing the cement-based composite material blanket to appear one thick or one thick and the other thin, which affects the actual laying Fourth, as mentioned above, because the patented product is not a needle-punched non-woven water-blocking felt in the true sense, it is not enough to reflect the maximum utilization value of resources, because as a manufacturer of non-woven products, in the production of non-woven fabrics A large amount of waste fibers will inevitably be produced in the whole process of textile products, and if waste fibers are not properly utilized, resources will be wasted

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