Point-shaped needle composite surface layer hot melting anti-scouring network structure and machining technology

Abstract

The invention discloses a point-shaped needle composite surface layer hot melting anti-scouring network structure. The point-shaped needle composite surface layer hot melting anti-scouring network structure comprises multiple layers of stacked textile materials. The multiple layers of textile materials comprise top-layer hot melting textile materials and bottom-layer non-woven fabric. The multiple layers of textile materials are combined through reverse face point-shaped needles, the needle area is smaller than 10% of the total area, and the ends of puncturing fiber bundles from the bottom-layer non-woven fabric and at the point-shaped needle positions and the surface of the top-layer hot melting textile materials are bonded through hot melting. According to the point-shaped needle composite surface layer hot melting anti-scouring network structure, the multiple layers of textile materials are combined through the point-shaped needles, the purpose of damage to the raw material integral functional structure to the minimum degree is achieved, and peeling strength is generated between the multiple layers of textile materials. Through composite surface hot melting, on one hand, the peeling strength is further enhanced through the bonding force of one ends of the fiber bundles and the top-layer fabric; and on the other hand, through hot melting, free fiber on the composite surface layer is removed, and the composite surface layer has the fiber detachment preventing and water flow scouring preventing performance.

Description

technical field [0001] The invention relates to the field of geosynthetic materials for ecological slope protection of river channels, in particular to a hot-melt anti-scouring network structure and processing technology of a dotted needle-punched composite surface layer. Background technique [0002] The riparian zone is a semi-terrestrial ecosystem between the river and the land. It is directly or indirectly affected by the change of the river water level and has a buffer effect. It usually connects the above-ground terrestrial system and the terrestrial system through the hydrological process of surface runoff and subsurface flow. aquatic system. The area ratio of the riparian zone is not high in the watershed ecosystem, but it plays an irreplaceable role in the process of water and nutrients flowing into the river. It intercepts non-point source pollution, builds river habitats, and promotes the connectivity between the river and its surrounding environment. have import...

AI Technical Summary

Problems solved by technology

However, needle punching also has disadvantages in the implementation process: needle punching has certain damage to the strength and structure of the composite fabric; the peel strength between the composite fabrics is small; most of the fibers passing through the composite in the non-woven composite fabric are in the The semi-free state is easy to be pulled off under the action of external force (such as repeated washing by water flow), and eventually lead to the failure of its overall function

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