The present invention relates to a three-dimensional (3D) netted vegetation blanket, and more particularly to a 3D netted vegetation blanket with upright loops that has enhanced structural strength, provides a 3D growing space for vegetation seeds, and has high void ratio to support seedlings, and can therefore be advantageously used in slope protection, soil and water conservation as well as other vegetation engineering works.
According to the conventional ways for slope protection, soil and water conservation, and vegetation engineering works, soil is first spread over the slope to form a layer of top soil, vegetation seeds are then sowed or sprayed over the top soil before a netted vegetation blanket is spread over the vegetation seeds. Alternatively, a layer of soil can be further spread over the netted vegetation blanket. The netted vegetation blanket is provided mainly to protect plants, grass seeds and soil on slopes, lest the soil and the vegetation seeds and seedling should be washed off due to soil erosion caused by rainwater and have adverse influence on the slope protection, soil and water conservation, and other vegetation engineering works.
(1) The fiber-formed mat 15 has a relatively low void ratio and would therefore limit the growth of vegetation seeds, resulting in poor effect in vegetation practices.
(2) The grid 10 and the fiber-formed mat 15 are not 3D structures and fail to effectively hold the vegetation seeds thereto. In the case of heavy rain during the vegetation process, the seeds below the vegetation blanket are easily flushed off from the soil to result in poor vegetation effect.
(3) The fiber-formed mat 15 is formed of natural fibers, which are good foods for some insects and parasites. As a result, the fiber-formed mat 15 is easily become moth-eaten or worm-eaten to damage the overall structure of the vegetation blanket.
It is therefore necessary to overcome the above disadvantages in the conventional vegetation blanket.
A primary object of the present invention is to provide a 3D netted vegetation blanket with upright loops, which is manufactured via interlacing multi-layer weaving to have a three-dimensional structure and high void ratio, and is therefore suitable for growing vegetation seeds and supporting seedlings when being used in slope protection, soil and water conservation, and vegetation engineering works.
Another object of the present invention is to provide a 3D netted vegetation blanket that has enhanced structural strength and can be conveniently transported and easily installed when being used in slope protection, soil and water conservation, and vegetation engineering works.
To achieve the above and other objects, the 3D netted vegetation blanket with upright loops according to the present invention is manufactured by mechanically weaving a plurality of longitudinal, transverse, and loop-forming threads. Through continuous interlacing and multi-layer weaving, the transverse threads are woven into a plurality of horizontal net bodies having a predetermined thickness and presenting a plurality of interlocked double-ply rings. The longitudinal threads are twisted threads having a predetermined strength, and are extended through the horizontal net bodies. The loop-forming threads are upward and downward extended through the interlocked rings of the horizontal net bodies to form a plurality of upright loops over any two parallelly adjacent horizontal net bodies. With these arrangements, the 3D netted vegetation blanket has an enhanced structural strength and provides a 3D growing space for vegetation seeds. The 3D netted vegetation blanket also has high void ratio to advantageously support seedlings and provide good effect in soil and water conservation as well as vegetation engineering works.
The structure and the technical means adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings, wherein
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The present invention has been described with a preferred embodiment thereof and it is understood that many changes and modifications in the described embodiment can be carried out without departing from the scope and the spirit of the invention that is intended to be limited only by the appended claims.