CN110884177A - Bidirectional plastic geogrid and manufacturing method thereof - Google Patents
Bidirectional plastic geogrid and manufacturing method thereof Download PDFInfo
- Publication number
- CN110884177A CN110884177A CN201911387607.9A CN201911387607A CN110884177A CN 110884177 A CN110884177 A CN 110884177A CN 201911387607 A CN201911387607 A CN 201911387607A CN 110884177 A CN110884177 A CN 110884177A
- Authority
- CN
- China
- Prior art keywords
- rib
- ribs
- geogrid
- plastic geogrid
- bidirectional
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D28/00—Producing nets or the like, e.g. meshes, lattices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The invention relates to a bidirectional plastic geogrid and a manufacturing method thereof, wherein the bidirectional plastic geogrid comprises a plurality of ribs, a plurality of nodes and reinforcing ribs with the whole width, the two adjacent nodes of the bidirectional plastic geogrid, the adjacent nodes and the reinforcing ribs are connected through the ribs to form a bidirectional plastic geogrid single net, each bidirectional plastic geogrid single net is internally and transversely provided with at least one reinforcing rib with the whole width, the reinforcing ribs are vertical to the bidirectional plastic geogrid, at least one side surface of each of two side surfaces of each reinforcing rib is connected with the corresponding rib, the plane projection graph of each rib is in a dumbbell shape, and the connecting parts of the vertical ribs and the reinforcing ribs are in an inward-sinking curved surface shape; and the adjacent two-way plastic geogrid single nets are fixedly connected at the joint through a reinforcing rib. The device can increase the connection strength between the geogrid single meshes.
Description
Technical Field
The invention belongs to the technical field of geotechnical reinforcement materials, and particularly relates to a bidirectional plastic geogrid and a manufacturing method thereof.
Background
The plastic geogrid is a two-dimensional latticed net material which is formed by taking high polymer polymers such as polypropylene, high-density polyethylene and the like as main raw materials and directly stretching the polymers through extrusion or stretching the polymers and then welding the polymers, is generally used for laying in soil, and forms an efficient stress transmitter through the engagement and interlocking action between the grid meshes and the soil body, so that local load can be quickly and effectively transmitted to the soil body with a large area, and the aims of reducing local damage stress and prolonging the service life of engineering are fulfilled.
In the prior art, the product width of the biaxial tension plastic geogrid is less than 6.5 meters, the equipment investment for producing the biaxial tension plastic geogrid with the product width not less than 6.5 meters and the nominal longitudinal and transverse tensile strength greater than 50KN/m is huge, the single piece expansion length of the plastic geogrid is less than 100 meters, and for the biaxial tension plastic geogrid with higher tensile strength, the difficulty is caused to the transportation or construction of the plastic geogrid due to the overlong single piece length of the geogrid; at the job site of laying of geogrid, the overlap joint mode that traditional geogrid widen the increase is: binding ribs of the geogrid together by using plastic belts at the lap joint of 15-20 cm in the longitudinal direction and 10-15 cm in the transverse direction, and fixing the ribs on the ground by using U-shaped nails every 1.5-2.0 m; the unidirectional stretching plastic geogrids are vertically increased by adopting plastic connecting rods in a cross connection mode, the bidirectional stretching plastic geogrids cannot realize the single-net connection between the bidirectional stretching plastic geogrids due to the fact that the size of the meshes of the bidirectional stretching plastic geogrids is too small, and the problem of low strength of the lap joint exists when the labor cost is consumed in the field lap joint assembly mode of the existing bidirectional stretching plastic geogrids.
The problem that the traditional geogrid is generally smooth in surface and relatively small in friction force with the ground and slides with the ground is solved, so that the conventional geogrid has water storage and storage capacity and is beneficial to the growth of plants when the geogrid is used for vegetation; meanwhile, the problem of low connection strength between the single nets in the transverse direction of the biaxial stretching plastic geogrid is solved, and the problem of low connection strength between the single nets in the vertical direction of the biaxial stretching plastic geogrid still exists.
Disclosure of Invention
The invention provides a bidirectional plastic geogrid which is used for overcoming the defects in the prior art.
The invention is realized by the following technical scheme:
a bidirectional plastic geogrid comprises a plurality of ribs, a plurality of nodes and a whole-width long reinforcing rib which are pressed synchronously, the two adjacent nodes of the bidirectional plastic geogrid and the nodes and the adjacent reinforcing ribs are connected through ribs to form a bidirectional plastic geogrid single net, the plane projection pattern of the ribs is dumbbell-shaped, at least one reinforcing rib with the whole width is arranged in each bidirectional plastic geogrid single net along the transverse direction of the bidirectional plastic geogrid single net, at least one side surface of the two side surfaces of the reinforcing rib is connected with the rib, the connecting part of the rib and the reinforcing rib in the vertical direction is in an inwards concave curved surface shape, the ribs in the vertical direction are vertical to the transverse direction, the side face, connected with the ribs, of each reinforcing rib is in a bathtub side face shape, and the adjacent two-way plastic geogrid single nets are fixedly connected through the reinforcing ribs at the connection positions.
In the application, at least one reinforcing rib with the whole width is transversely arranged on each single bidirectional plastic geogrid net, so that the integral rigidity of the plastic geogrids can be further improved, and the vertical connection efficiency and the connection strength between the single plastic geogrid nets are improved; the side surface of the whole long reinforcing rib between two adjacent vertical ribs in the vertical direction of the geogrid is in a bathtub side surface shape, so that the contact surface between the whole long reinforcing rib and the filler can be improved, and the interlocking force and the friction force between the whole long reinforcing rib and the filler are further improved; the connecting parts of the vertical ribs and the whole long reinforcing ribs are in a sunken curved surface shape, and through the transition of the curved surface shape, the tensile strength of the geogrid can be enhanced, and the reinforcing capacity of the bidirectional plastic geogrid to engineering projects is ensured.
Preferably, the bidirectional plastic geogrid single net is also provided with at least one reinforcing rib with the whole width in the vertical direction, and at least one side surface of two side surfaces of the reinforcing rib is connected with the rib.
The whole width of the reinforcing ribs are vertically arranged on the bidirectional plastic geogrid, so that the overall rigidity of the bidirectional plastic geogrid can be further improved, and the overall reinforcing effect of the bidirectional plastic geogrid is further improved.
Preferably, the ribs, nodes or reinforcing ribs are respectively provided with convex points and/or concave points, and the convex points and/or concave points can form numbers, letters, characters, patterns or patterns and combinations thereof.
The ribs, the nodes or the whole long reinforcing ribs are respectively provided with convex points and/or concave points, so that the contact area with the soil body can be increased, and the friction force is improved; on the other hand, the ribs, the nodes or the whole long reinforcing ribs have certain water storage capacity, so that the growth of plants is facilitated; the convex points and/or concave points can form numbers, letters, characters, patterns or patterns and combinations thereof, so that the product can be further marked, and the product quality can be effectively traced.
Preferably, still be connected with oblique rib between strengthening rib and the adjacent node and/or between the two adjacent nodes, the contained angle of oblique rib and vertical direction is the acute angle, the both ends of oblique rib with the junction of strengthening rib and/or node is the kitchen knife form, just the junction of oblique rib both ends kitchen knife form is hand like the symmetry.
Oblique ribs are connected between the side surface of the whole long reinforcing rib and the node and/or between two adjacent nodes, so that the anisotropy of the stress of the geogrid can be weakened, the stress of the geogrid is approximately uniformly distributed in the circumferential direction of the geogrid, and the bearing capacity of the geogrid is further improved; the joints of the two ends of the oblique ribs and the whole long reinforcing ribs and/or the joints are in a kitchen knife shape, so that the mechanical strength of the joints of the oblique ribs and the joints and/or the reinforcing ribs can be further improved, and the pulling resistance and the friction force between the oblique ribs and the soil body can be improved.
Preferably, the ribs and/or the oblique ribs are twisted.
The ribs and/or the oblique ribs are arranged in a twisted shape, so that the shearing resistance of the ribs and/or the oblique ribs can be improved, and meanwhile, the friction force between the ribs and the soil body can be further increased.
Preferably, the reinforcing ribs are provided with nodes and/or ribs.
The reinforcing ribs are provided with the nodes and/or the ribs, so that the contact area between the reinforcing ribs and the soil body can be increased, and the pulling resistance and the friction force between the reinforcing ribs and the soil body are increased.
Preferably, the reinforcing rib is provided with a through hole and/or a blind hole.
The through holes are formed in the reinforcing ribs, so that friction can be increased, the blind holes are formed in the reinforcing ribs, friction can be improved, and meanwhile, the reinforcing ribs have a certain water storage function and are beneficial to plant growth.
Preferably, the projection pattern of the mesh cavity of the planar single mesh is a rounded triangle, a rounded quadrangle, a rounded pentagon, a rounded hexagon, a rounded octagon, a trilateral, a quadrangle, a pentagon, a hexagon, an octagon, a curved polygon, a racetrack shape or an ellipse, and a combination of the shapes.
According to the actual situation of the reinforced engineering, the bidirectional plastic geogrid with different hole pattern combinations is used for different engineering for reinforcing, and the reinforcement effect of the geogrid can be fully exerted.
Preferably, the fixed connection mode of the bidirectional plastic geogrid single net at the connection position through the reinforcing ribs is U-shaped nail pin connection, welding, inserting connection, riveting, bolt connection, bonding, knitting, sewing, bundling, connection rod penetrating connection or injection molding connection and the combination of the connection modes.
A method for manufacturing a bidirectional plastic geogrid comprises the following steps:
(1) extruding a polymer plate with specified thickness and width by using thermoplastic plastic particles and additives through an extruder, wherein the temperature of the extruder is controlled to be 100-400 ℃;
in the production of manufacturing boards of PP bi-directional plastic geogrids, the processing temperature of an extruder is controlled between 160 ℃ and 240 ℃, and the processing temperature exceeding the range has poor production stability.
(2) Manufacturing a plastic pore plate with a vertically and/or horizontally widened pore gap, wherein the ratio of the width of the widened pore gap to the width of the pore gap which is not widened is more than or equal to 1.8;
when the ratio of the width of the widened hole gap to the width of the hole gap which is not widened is less than 1.8, the integral rigidity of the geogrid is not obviously improved, and the connection strength between the single nets of the geogrid through the reinforcing ribs is not improved much.
(3) Respectively carrying out biaxial stretching on the plastic pore plate with the widened pore gap in the vertical direction and the horizontal direction; the stretching temperature is controlled to be 80-380 ℃; or when the body of the biaxial stretching bidirectional plastic geogrid is in a thermal deformation state through heat absorption, applying external force to the geogrid to realize triaxial stretching, wherein the direction of the external force forms an acute angle with the included angle of the transverse stretching plane.
To realize the twisted shape of the rib, external force must be applied to the bidirectional plastic geogrid in a thermal deformation state, and the direction of the external force forms an acute angle with the included angle of the transverse stretching plane. Preferably, in a product shaping area after biaxial stretching is finished, the triaxial stretching of the plastic geogrid is realized; the twisting of the ribs and/or the oblique ribs of the bidirectional plastic geogrid is realized by controlling the wind speed and changing the direction of the wind power, and the twisting degree of the ribs and/or the oblique ribs can be controlled by controlling the wind speed.
(4) The method for manufacturing the concave and convex points on the upper and lower bottom surfaces of the reinforcing rib which is vertically long in the whole width can be preferably characterized in that a die with certain patterns is arranged on a transverse tenter, and the concave points and/or the convex points on the upper bottom surface and/or the lower bottom surface of the vertical reinforcing rib are simultaneously manufactured when the grating is transversely stretched.
Preferably, a mold with a certain pattern is arranged on the transverse tenter, so that the automatic production of the vertical reinforcing rib concave points and/or convex points on the width edge of the bidirectional plastic geogrid can be realized, and different patterns can be changed according to the needs of engineering.
Preferably, another preferable method for manufacturing the full-width long reinforcing ribs and the concave and convex points on the upper and lower bottom surfaces of the nodes is that the bi-directional plastic geogrid subjected to biaxial stretching or triaxial stretching is subjected to specific die pressing rollers or laser printers in a thermal deformation state to manufacture the full-width long reinforcing ribs and the concave and convex points on the upper and lower bottom surfaces of the nodes.
The biaxial stretching or triaxial stretching bidirectional plastic geogrid is used for manufacturing concave points and convex points on the upper bottom surface and/or the lower bottom surface of the whole-width long reinforcing rib of the bidirectional plastic geogrid through a specific mold press roll in a thermal deformation state, the specific mold press roll can be used for manufacturing the concave points and/or the convex points on the upper bottom surface and/or the lower bottom surface of the whole-width long reinforcing rib vertically and transversely in the middle of the bidirectional plastic geogrid, or a set of laser printing process is added on line, so that the concave points and/or the convex points forming characters and/or patterns on the reinforcing rib, the rib and the node are manufactured on line, the product is marked, and the product quality is traced.
The invention has the beneficial effects that:
the connecting parts of the vertical ribs and the whole long reinforcing ribs are sunken and are in a sunken curved surface shape, and through the transition of the curved surface shape, the tensile strength of the geogrid can be enhanced, and the reinforcing capability of the bidirectional plastic geogrid to engineering projects is ensured.
The whole-width long reinforcing ribs are arranged, on one hand, the whole rigidity of the bidirectional plastic geogrid can be improved, the bearing capacity of the bidirectional plastic geogrid is increased, on the other hand, the whole-width long reinforcing ribs have enough rigidity and strength, the connection efficiency of the whole-width long reinforcing ribs of the bidirectional plastic geogrid can be improved through connection, and meanwhile, the connection strength between single geogrid nets can also be improved.
And thirdly, due to the arrangement of the oblique ribs of the bidirectional plastic geogrid, the stress distribution of the bidirectional plastic geogrid in the circumferential direction is approximately uniform.
And the ribs and/or the oblique ribs are arranged in a twisted shape, so that the shearing resistance of the ribs and/or the oblique ribs can be improved, and meanwhile, the friction force between the ribs and/or the oblique ribs and the soil body can be further increased.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention.
Shown in the figure:
1. rib 2, node 3, strengthening rib.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A bi-directional plastic geogrid and a manufacturing method thereof, as shown in figure 1. The bidirectional plastic geogrid is a planar reticular structure formed by connecting a plurality of ribs, a plurality of nodes and reinforcing ribs with the whole width in a staggered manner, and the plastic material of the bidirectional plastic geogrid is not limited, for example, the plastic material is one of PP, HDPE, PET, PA and the like or the combination of the materials; the mesh shape of the bidirectional plastic geogrid is not limited, and the projection graph of the mesh cavity holes of the bidirectional plastic geogrid is a rounded corner trilateral, a rounded corner quadrilateral, a rounded corner pentagon, a rounded corner hexagon, a rounded corner octagon, a trilateral, a quadrilateral, a pentagon, a hexagon, an octagon, a curve polygon, a runway shape or an ellipse and the combination of the shapes.
Example 1:
the utility model provides a two-way plastics geogrid, includes a plurality of ribs 1 of synchronous suppression, a plurality of node 2 and the long strengthening rib 3 of whole width of cloth, all form two-way plastics geogrid single net through rib 1 interconnect between two adjacent nodes 2 of two-way plastics geogrid, between node 2 and the adjacent strengthening rib 3, the plane projection figure of rib 1 is dumbbell shape, every two-way plastics geogrid single net in be provided with a whole width of cloth long strengthening rib 3 along its transverse direction at least, two sides of strengthening rib 3 have at least one side to be connected with rib 1, rib 1 and the connecting portion of strengthening rib 3 of vertical direction are the curved surface form that caves in, and the concrete shape of the curved surface form that caves in does, and the both sides connecting portion that rib 1 and strengthening rib 3 are connected are the connection of curved surface form, and the surface of connecting face is the curve contact line. The rib 1 in the vertical direction is vertical to the transverse direction, the side face connected with the rib 1 is in a bathtub side face shape, and the adjacent two-way plastic geogrid single nets are fixedly connected through the reinforcing ribs 3 at the connecting positions.
In an implementation of this application, the material of two-way plastics geogrid is PP, and the single net of two-way plastics geogrid is the crisscross planar netted structure who links to each other and form of a plurality of ribs 1 and a plurality of node 2 and a horizontal full width of cloth strengthening rib 3 by synchronous suppression, and adjacent rib 1, node 2 and/or horizontal strengthening rib 3 enclose into the quadrangle mesh, and is adjacent pass through in the junction between the two-way plastics geogrid single net whole width of cloth strengthening rib 3 uses U type nail bolt connected mode fixed connection. In this embodiment, the ratio of the width of the entire long reinforcing rib 3 to the width of the rib 1 is 4: 1.
In another implementation of this application, the material of two-way plastics geogrid is PET, and the single net of two-way plastics geogrid is the crisscross planar netted structure who links to each other and form of whole width's strengthening rib 3 in a horizontal direction by a plurality of ribs 1 and a plurality of node 2 of synchronous suppression, and adjacent rib 1, node 2 and/or horizontal direction's strengthening rib 3 enclose into triangle-shaped mesh, and is adjacent use U type nail grafting connection mode fixed connection through strengthening rib 3 between the two-way plastics geogrid single net at the junction. In the present embodiment, the ratio of the width of the entire long reinforcing ribs 3 to the width of the ribs 1 in the transverse direction is 1.01: 1.
In another embodiment of the present invention, the bidirectional plastic geogrid is made of HDPE, the single net of the bidirectional plastic geogrid is a planar mesh structure formed by alternately connecting a plurality of synchronously pressed ribs 1, a plurality of nodes 2 and a reinforcing rib 3 with the whole width in the transverse direction, adjacent ribs 1, nodes 2 and/or reinforcing ribs 3 in the transverse direction enclose a triangular and quadrangular combined mesh, and the adjacent bidirectional plastic geogrid single nets are fixedly connected at the joint by the reinforcing rib 3 in a bolt-nut connection manner. In the embodiment, the ratio of the width of the whole long reinforcing rib 3 to the width of the rib 1 is 1.6:1, in the embodiment, an inclined rib 1 forming an acute angle with the vertical direction is further arranged, two ends of the inclined rib 1 are in a kitchen knife shape at the connection part with the reinforcing rib 3 and/or the node 2, and the kitchen knife-shaped connection parts at the two ends of the inclined rib 1 are in hand symmetry.
In another preferred embodiment of the above embodiment, the oblique rib 1 is twisted; the air outlet direction of the shaping section of the stretching oven is changed, so that the included angle between the air outlet direction and the length direction forms an acute angle, the distortion of the oblique rib 1 is realized, and the distortion degree of the oblique rib 1 is controlled by controlling the air outlet speed of the shaping section.
Another preference of the above embodiment, the ribs 1 in the vertical direction and/or the ribs 1 in the transverse direction are twisted; in the shaping section of the stretching oven, an acting force is given to a stretching plane of the bidirectional plastic geogrid in the transverse direction, and the direction of the acting force and the included angle in the vertical direction form an acute angle, so that three-axis stretching is realized, and the ribs 1 in the vertical direction and/or the ribs 1 in the transverse direction are twisted; the degree of distortion of the rib 1 in the vertical direction and/or the rib 1 in the lateral direction is controlled by controlling the magnitude of the force.
Another preferred of the above-mentioned embodiment, rib 1 in the vertical direction, rib 1 in the horizontal direction and oblique rib 1 all are the twist form, the acting force of the tensile plane of two-way plastics geogrid horizontal direction, and the direction of acting force and the contained angle of vertical direction become the acute angle, realize that the triaxial is tensile, make rib 1 in the vertical direction, rib 1 in the horizontal direction and oblique rib 1 be the twist form, cross the size of control acting force and come rib 1 in the control length direction, rib 1 in the width direction and oblique rib distortion degree.
In another embodiment of this embodiment, the whole width of the reinforcing rib 3 is provided with a through hole and a blind hole respectively. Otherwise the same as above;
in another mode of the embodiment, the ribs 1 and the nodes 2 are respectively arranged on the whole width reinforcing rib 3. Otherwise the same as above;
in another mode of the embodiment, the whole long reinforcing rib 3, the rib 1 and the node 2 are respectively provided with concave points and convex points. In the stretching and shaping area, a compression roller with concave points and/or convex points is arranged, the bidirectional plastic geogrid is compressed by the compression roller of the mould, so that the concave points and the convex points are respectively arranged on the whole width reinforcing rib 3, the rib 1 and the node 2, and other modes are the same as the above;
example 2:
the utility model provides a two-way plastics geogrid, includes a plurality of ribs 1 of synchronous suppression, a plurality of nodes 2 and the long strengthening rib 3 of whole width of cloth, a plurality of ribs 1, a plurality of nodes 2 and the long strengthening rib 3 interconnect of whole width of cloth form crisscross plane reticular structure, and concrete connection mode does, all through rib 1 fixed connection between the two adjacent nodes 2 of vertical direction and transverse direction, also through rib 1 fixed connection between node 2 and the adjacent strengthening rib, rib 1 width unequal, node 2 thickness unequal every two-way plastics geogrid single net's transverse direction at least be provided with two whole long strengthening ribs 3, whole long strengthening rib 3 with two-way plastics geogrid's vertical direction perpendicular, whole long strengthening rib 3 has at least one side in two sides on the geogrid vertical direction to be connected with rib 1 on the length direction, the side surfaces of the whole long reinforcing ribs 3 between two adjacent vertical direction ribs 1 in the vertical direction of the geogrid are in a bathtub side surface shape, the connecting parts of the ribs 1 in the vertical direction and the whole long reinforcing ribs 3 are in an inwards concave curved surface shape which is bilaterally symmetrical along the vertical central line of the ribs, and at least two whole long reinforcing ribs 3 are also arranged in the vertical direction parallel to the bidirectional plastic geogrid. At least one side of two sides of the whole width of long reinforcing ribs 3 in the vertical direction in the transverse direction of the geogrid is connected with the rib 1 in the transverse direction, and the adjacent two-way plastic geogrid single nets are fixedly connected through the whole width of long reinforcing ribs 3 at the connection position.
In one implementation of the application, the bidirectional plastic geogrid is made of PP, a single net of the bidirectional plastic geogrid is a planar net-shaped structure formed by alternately connecting a plurality of ribs 1, a plurality of nodes 2, two reinforcing ribs 3 which are full-width long in the transverse direction and one reinforcing rib 3 which is long in the vertical direction, the two reinforcing ribs 3 which are full-width long in the transverse direction are located at two ends of the bidirectional geogrid in the length direction, and the reinforcing rib 3 which is full-width long in the vertical direction is located in the middle of the bidirectional plastic geogrid; the adjacent ribs 1, the nodes 2 and/or the reinforcing ribs 3 form hexagonal meshes in a surrounding mode, and the adjacent bidirectional plastic geogrid single meshes are fixedly connected through the reinforcing ribs 3 in a welding connection mode. In this embodiment, the ratio of the width of the entire long reinforcing rib 3 to the width of the rib 1 is 5: 1.
In one implementation of the application, the bidirectional plastic geogrid is made of HDPE, a single net of the bidirectional plastic geogrid is a planar net-shaped structure formed by connecting a plurality of synchronously pressed ribs 1, a plurality of nodes 2, two reinforcing ribs 3 which are full-width long in the transverse direction and one reinforcing rib 3 which is long in the length direction in a staggered mode, the two reinforcing ribs 3 which are full-width long in the transverse direction are located at two ends of the bidirectional geogrid in the length direction, and the reinforcing rib 3 which is full-width long in the vertical direction is located in the middle of the bidirectional plastic geogrid; and the adjacent two-way plastic geogrid single nets are fixedly connected at the joint by the reinforcing ribs 3 in a riveting connection mode. In this embodiment, the ratio of the width of the entire long reinforcing ribs 3 to the width of the ribs 1 is 3: 1.
In another embodiment of this embodiment, the bidirectional plastic geogrid is made of HDPE, a single net of the bidirectional plastic geogrid is a planar mesh structure formed by connecting a plurality of synchronously pressed ribs 1, a plurality of nodes 2 and two full-width reinforcing ribs 3 in the transverse direction in a staggered manner, the two full-width reinforcing ribs 3 in the two transverse directions are respectively arranged at two ends of the bidirectional plastic geogrid single net in the length direction, adjacent ribs 1, nodes 2 and/or reinforcing ribs 3 enclose triangular and octagonal combined meshes, and the adjacent bidirectional plastic geogrid single nets are fixedly connected through the reinforcing ribs 3 in a bolt-nut connection manner. In the embodiment, the ratio of the width of the whole long reinforcing rib 3 to the width of the rib 1 in the transverse direction is 5:1, in the embodiment, an inclined rib 1 forming an acute angle with the vertical direction is further arranged, two ends of the inclined rib 1 are in a kitchen knife shape at the connection part with the reinforcing rib 3 and/or the node 2, and the kitchen knife-shaped connection parts at the two ends of the inclined rib 1 are in hand symmetry.
In another preferred embodiment of the above embodiment, the oblique rib 1 is twisted; the air outlet direction of the shaping section of the stretching oven is changed, so that the included angle between the air outlet direction and the length direction forms an acute angle, the distortion of the oblique rib 1 is realized, and the distortion degree of the oblique rib 1 is controlled by controlling the air outlet speed of the shaping section.
Another preference of the above embodiment, the ribs 1 in the vertical direction and/or the ribs 1 in the transverse direction are twisted; in the shaping section of the stretching oven, a force is applied to the stretching plane of the bidirectional plastic geogrid in the transverse direction, the direction of the force and the included angle of the rib 1 in the length direction form an acute angle, so that three-axis stretching is realized, and the rib 1 in the length direction and/or the rib 1 in the width direction are twisted; the degree of distortion of the rib 1 in the lengthwise direction and/or the rib 1 in the widthwise direction is controlled by controlling the magnitude of the force.
Another preferred of the above-mentioned embodiment, rib 1 in the vertical direction, rib 1 in the horizontal direction and oblique rib 1 all are the twist form, and the acting force of the tensile plane of two-way plastics geogrid horizontal direction, the direction of acting force and the contained angle of length direction become the acute angle, realize that the triaxial is tensile, make rib 1 in the length direction, rib 1 in the width direction and oblique rib 1 be the twist form, cross the size of control acting force and come the rib 1 in the length direction, rib 1 in the width direction and the oblique rib degree of twist of control.
In another embodiment of this embodiment, the entire length of the reinforcing bars 3 is provided with through holes and blind holes, respectively. Otherwise the same as above;
in another mode of the embodiment, the whole width of the long reinforcing rib 3 is provided with the rib 1 and the node 2 respectively. Otherwise the same as above;
in another mode of the embodiment, the whole long reinforcing rib 3, the rib 1 and the node 2 are respectively provided with concave points and convex points. In the stretching and shaping area, a compression roller with pits and/or bumps is arranged, the bidirectional plastic geogrid is pressed by the compression roller of the mold, the pits and the bumps are respectively arranged on the whole long reinforcing rib 3, the rib 1 and the node 2 in the transverse direction, the pits and the bumps form manufacturer names, registered trademarks and the like, and other modes are the same as the above modes;
example 3:
a bidirectional plastic geogrid comprises a plurality of ribs 1, a plurality of nodes 2 and a whole-width long reinforcing rib 3 which are pressed synchronously, wherein the plurality of ribs 1, the plurality of nodes 2 and the whole-width long reinforcing rib 3 are connected with each other to form a staggered planar reticular structure body, two vertical and horizontal adjacent nodes 2 are fixedly connected through the ribs 1, the nodes 2 are also fixedly connected with the adjacent reinforcing ribs through the ribs 1, a planar projection graph of each rib 1 is dumbbell-shaped, at least two whole-width long reinforcing ribs 3 are arranged in the horizontal direction of each bidirectional plastic geogrid single net, the whole-width long reinforcing ribs 3 are vertical to the length direction of the bidirectional plastic geogrid, at least one side surface of the whole-width long reinforcing ribs 3 in the two side surfaces of the geogrid in the length direction is connected with the ribs 1 in the length direction, the side surfaces of the whole long reinforcing ribs 3 between two adjacent vertical direction ribs 1 in the vertical direction of the geogrid are in a bathtub side surface shape, the connecting parts of the vertical ribs 1 and the whole long reinforcing ribs 3 are in an inward concave curved surface shape which is bilaterally symmetrical along the vertical central line of the ribs, and at least two whole long reinforcing ribs 3 are also arranged in the vertical direction parallel to the bidirectional plastic geogrid. At least one side of two sides of the whole width of long reinforcing ribs 3 in the vertical direction in the transverse direction of the geogrid is connected with the rib 1 in the transverse direction, and the adjacent two-way plastic geogrid single nets are fixedly connected through the whole width of long reinforcing ribs 3 at the connection position.
In one implementation of the present application, the bidirectional plastic geogrid is made of PP, a single net of the bidirectional plastic geogrid is a planar mesh structure formed by alternately connecting a plurality of synchronously pressed ribs 1, a plurality of nodes 2, two reinforcing ribs 3 with full width in the transverse direction and two reinforcing ribs 3 with full width in the vertical direction, the two reinforcing ribs 3 with full width in the transverse direction are located at two ends of the bidirectional plastic geogrid in the length direction, and two lateral surfaces of the two reinforcing ribs 3 with full width in the length direction are connected with the ribs 1 in the vertical direction; the two reinforcing ribs 3 with the whole width in the vertical direction are respectively positioned at two ends of the single net of the bidirectional plastic geogrid in the transverse direction, and only one side surface of the reinforcing ribs 3 with the whole width in the vertical direction in the two side surfaces of the bidirectional plastic geogrid in the transverse direction is connected with the rib 1 in the width direction; the adjacent ribs 1, the nodes 2 and/or the reinforcing ribs 3 form quadrilateral meshes in a surrounding manner, and the reinforcing ribs 3 passing through the joints between the adjacent bidirectional plastic geogrid single meshes are fixedly connected in a U-shaped nail bolt connection manner. In this embodiment, the ratio of the width of the entire long reinforcing rib 3 to the width of the rib 1 is 3.5: 1.
In another mode of this embodiment, the material of the bidirectional plastic geogrid is HDPE, a single net of the bidirectional plastic geogrid is a planar mesh structure formed by alternately connecting a plurality of ribs 1, a plurality of nodes 2, two reinforcing ribs 3 with full width in the transverse direction and two reinforcing ribs 3 with full width in the vertical direction, which are synchronously pressed, the two reinforcing ribs 3 with full width in the transverse direction are located at two ends of the bidirectional plastic geogrid in the length direction, and two side surfaces of the two reinforcing ribs 3 with full width in the vertical direction are connected with the ribs 1 in the vertical direction; the two reinforcing ribs 3 with the whole width in the vertical direction are respectively positioned at two ends of the single net of the bidirectional plastic geogrid in the transverse direction, and only one side surface of the reinforcing ribs 3 with the whole width in the vertical direction in the transverse direction of the bidirectional plastic geogrid is connected with the rib 1 in the transverse direction; adjacent ribs 1, nodes 2 and/or reinforcing ribs 3 form quadrilateral meshes in a surrounding mode, and adjacent single bidirectional plastic geogrid nets are fixedly connected at the connecting positions through the reinforcing ribs 3 in a U-shaped nail inserting connection mode. In this embodiment, the ratio of the width of the entire long reinforcing ribs 3 to the width of the ribs 1 is 3.8: 1.
In another embodiment of this embodiment, the bidirectional plastic geogrid is made of PET, the single net of the bidirectional plastic geogrid is a planar mesh structure formed by alternately connecting a plurality of synchronously pressed ribs 1, a plurality of nodes 2, two reinforcing ribs 3 with the whole width in the transverse direction and two reinforcing ribs 3 with the whole length in the vertical direction, the two reinforcing ribs 3 with the whole width in the transverse direction are located at two ends of the single net of the bidirectional plastic geogrid in the length direction, and two lateral surfaces of the two reinforcing ribs 3 with the whole width in the vertical direction are connected with the ribs 1 in the vertical direction; the two reinforcing ribs 3 with the whole width in the vertical direction are respectively positioned at two ends of the single net of the bidirectional plastic geogrid in the transverse direction, and only one side surface of the reinforcing ribs 3 with the whole width in the vertical direction in the transverse direction of the bidirectional plastic geogrid is connected with the rib 1 in the transverse direction; and the adjacent two-way plastic geogrid single nets are fixedly connected at the joint by reinforcing ribs 3 in a bolt and nut connection mode. In the embodiment, the width ratio of the transverse direction of the whole long reinforcing rib 3 to the rib 1 in the vertical direction is 2.6:1, in the embodiment, an inclined rib 1 forming an acute angle with the vertical direction is further arranged, two ends of the inclined rib 1 are in a kitchen knife shape at the connection part with the reinforcing rib 3 and/or the node 2, and the kitchen knife-shaped connection parts at the two ends of the inclined rib 1 are in hand-like symmetry.
In another preferred embodiment of the above embodiment, the oblique rib 1 is twisted; the air outlet direction of the shaping section of the stretching oven is changed, so that an included angle between the air outlet direction and the vertical direction forms an acute angle, the distortion of the oblique rib 1 is realized, and the distortion degree of the oblique rib 1 is controlled by controlling the air outlet speed of the shaping section.
Another preference of the above embodiment, the ribs 1 in the vertical direction and/or the ribs 1 in the transverse direction are twisted; in the shaping section of the stretching oven, an acting force is given to a stretching plane of the bidirectional plastic geogrid in the transverse direction, the direction of the acting force and the included angle of the rib 1 in the vertical direction form an acute angle, so that three-axis stretching is realized, and the rib 1 in the vertical direction and/or the rib 1 in the transverse direction are twisted; the degree of distortion of the rib 1 in the lengthwise direction and/or the rib 1 in the widthwise direction is controlled by controlling the magnitude of the force.
Another preferred of the above-mentioned embodiment, rib 1 in the vertical direction, rib 1 in the horizontal direction and oblique rib 1 all are the twist form, the acting force of the tensile plane of two-way plastics geogrid horizontal direction, and the direction of acting force becomes the acute angle with the contained angle of vertical direction, realizes that the triaxial is tensile, makes rib 1 in the vertical direction, rib 1 in the horizontal direction and oblique rib 1 be the twist form, controls the size of acting force and controls rib 1 in the vertical direction, rib 1 in the horizontal direction and oblique rib distortion degree.
In another embodiment of this embodiment, the entire length of the reinforcing bars 3 is provided with through holes and blind holes, respectively. Otherwise the same as above;
in another mode of the embodiment, the whole width of the long reinforcing rib 3 is provided with the rib 1 and the node 2 respectively. Otherwise the same as above;
in another mode of the embodiment, the whole width of the long reinforcing rib 3, the rib 1 and the node 2 are respectively provided with concave points and convex points. In the stretching and shaping area, a compression roller with pits and/or bumps is arranged, the bidirectional plastic geogrid is pressed by the compression roller of the mold, so that the pits and the bumps are arranged on the whole long reinforcing rib 3, the rib 1 and the node 2 in the transverse direction respectively, the pits and the bumps form character information such as manufacturer names, production dates and production teams and groups, the product quality can be conveniently traced, and other modes are the same as the modes;
in the above embodiment, a method for manufacturing a bidirectional plastic geogrid comprises:
(1) extruding a polymer plate with specified thickness and width by using thermoplastic plastic particles and additives through an extruder, wherein the temperature of the extruder is controlled to be 100-400 ℃;
the method takes thermoplastic plastic particles such as PP, HDPE or PET as main raw materials, adds a certain proportion of plastic additives, and extrudes a board with approximately equal thickness through an extruder at 165-320 ℃, wherein the board can be single plastic or the combination of two plastics and more than two plastic particles;
(2) manufacturing a plastic pore plate with widened pore gaps in the vertical direction and/or the transverse direction, wherein the ratio of the width of the widened pore gaps to the width of the pore gaps which are not widened is more than or equal to 1.8;
adjusting the hole clearance of the plastic plates in the vertical direction and/or the transverse direction to obtain a hole plate with widened hole clearance in the vertical direction and/or the transverse direction, wherein the ratio of the width of the widened hole clearance to the width of the hole clearance which is not widened is not less than 1.8 when the connection strength between the single meshes of the bidirectional plastic geogrid is higher;
when the ratio of the width of the widened hole gap to the width of the hole gap which is not widened is less than 1.8, the integral rigidity of the geogrid is not obviously improved, and the connection strength between the geogrid single meshes through the reinforcing ribs is low.
(3) Biaxially stretching the plastic hole plate with the widened hole gap in the vertical direction and the transverse direction; the stretching temperature is controlled to be 80-380 ℃;
preferably, the biaxial stretching temperature of the bi-directional plastic geogrid made of HDPE is controlled to be 90-130 ℃;
preferably, the biaxial stretching temperature of the bidirectional plastic geogrid made of PP is controlled to be 110-160 ℃;
preferably, the biaxial stretching temperature of the bidirectional plastic geogrid made of PET is controlled to be 240-280 ℃;
or when the body of the biaxial stretching bidirectional plastic geogrid is in a thermal deformation state through heat absorption, applying an external force to the geogrid to realize triaxial stretching, wherein the direction of the external force forms an acute angle with the included angle of the stretching plane in the transverse direction.
To realize the twisted shape of the rib, an external force must be applied to the bidirectional plastic geogrid in a thermal deformation state, and the direction of the external force forms an acute angle with the included angle of the stretching plane in the transverse direction.
By changing the magnitude and direction of the applied external force, the bidirectional plastic geogrids with ribs and/or oblique ribs with different twisting degrees are obtained.
Preferably, in a product shaping area after biaxial stretching is finished, the triaxial stretching of the plastic geogrid is realized; the twisting of the ribs and/or the oblique ribs of the bidirectional plastic geogrid is realized by controlling the wind speed and changing the direction of the wind power, and the twisting degree of the ribs and/or the oblique ribs can be controlled by controlling the wind speed.
(4) The manufacturing of the concave and convex points of the upper and lower bottom surfaces of the whole long reinforcing rib in the vertical direction of the edge can arrange a mold with certain patterns on a tenter in the transverse direction, and the concave points and/or the convex points of the upper and/or lower bottom surfaces of the reinforcing rib in the vertical direction are simultaneously manufactured when the grating is stretched in the transverse direction.
Preferably, a die with a certain pattern is arranged on the tenter in the transverse direction, so that the automatic production of the lengthwise reinforcing rib pits and/or convex points arranged on the transverse edge of the bidirectional plastic geogrid can be realized, and different patterns can be changed according to the engineering requirement.
In addition, another preferable method for manufacturing the full-width long reinforcing ribs and the concave and convex points on the upper bottom surface and/or the lower bottom surface of the nodes is to manufacture the full-width long reinforcing ribs and the concave and convex points on the upper bottom surface and/or the lower bottom surface of the nodes by using the biaxial-stretched or triaxial-stretched bidirectional plastic geogrid through a specific mold press roll in a thermal deformation state of the bidirectional plastic geogrid.
Under the thermal deformation state of the biaxial stretching or triaxial stretching bidirectional plastic geogrid, the whole-width long reinforcing ribs and ribs of the bidirectional plastic geogrid and concave and convex points of the upper bottom and/or the lower bottom of the node are manufactured through a specific mold press roll, the concave points and/or convex points of the upper bottom and/or the lower bottom of the whole-width long reinforcing ribs in the vertical direction and the transverse direction of the middle position of the bidirectional plastic geogrid can be manufactured through the specific mold press roll, or a set of laser printing process is added on line, so that the concave points and/or convex points of characters and/or patterns formed on the reinforcing ribs and the rib and the node can be manufactured on line, the product identification is realized, and the product quality can be traced.
In the above embodiment, the fixed connection between the single nets of the bidirectional plastic geogrids may be that the number of the single nets of the grids on the left and right sides of the connection between the single nets of the connected bidirectional plastic geogrids is equal, or that the number of the single nets of the plastic geogrids on the left and right sides of the connection is not equal; the single nets are fixedly connected in a mode of U-shaped nail bolt connection, welding, riveting, inserting, bonding, bolt connection, sewing, nailing or injection molding connection and a combination of the connection modes.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A bidirectional plastic geogrid comprises a plurality of ribs, a plurality of nodes and a whole-width long reinforcing rib which are pressed synchronously, it is characterized in that the two adjacent nodes of the bidirectional plastic geogrid and the nodes and the adjacent reinforcing ribs are connected through ribs to form a bidirectional plastic geogrid single net, the plane projection pattern of the ribs is dumbbell-shaped, at least one reinforcing rib with the whole width is arranged in each bidirectional plastic geogrid single net along the transverse direction of the bidirectional plastic geogrid single net, at least one side surface of the two side surfaces of the reinforcing rib is connected with the rib, the connecting part of the rib and the reinforcing rib in the vertical direction is in an inwards concave curved surface shape, the ribs in the vertical direction are vertical to the transverse direction, the side face, connected with the ribs, of each reinforcing rib is in a bathtub side face shape, and the adjacent two-way plastic geogrid single nets are fixedly connected through the reinforcing ribs at the connection positions.
2. The bi-directional plastic geogrid according to claim 1, wherein: the bidirectional plastic geogrid single net is also at least provided with a whole-width long reinforcing rib along the vertical direction of the bidirectional plastic geogrid single net, and at least one side surface of two side surfaces of the reinforcing rib is connected with the rib.
3. The bi-directional plastic geogrid according to claim 1 or 2, wherein: the ribs, nodes or reinforcing ribs are respectively provided with convex points and/or concave points, and the convex points and/or concave points can form numbers, letters, characters, patterns or patterns and combinations thereof.
4. The bi-directional plastic geogrid according to claim 1 or 2, wherein: still be connected with the inclined rib between strengthening rib and the adjacent node and/or between the double-phase adjacent node, the inclined rib is the acute angle with the contained angle of vertical direction, the both ends of inclined rib with the junction of strengthening rib and/or node is the kitchen knife form, just the junction of inclined rib both ends kitchen knife form is hand like the symmetry.
5. The bi-directional plastic geogrid according to claim 1 or 4, wherein: the ribs and/or the oblique ribs are twisted.
6. The bi-directional plastic geogrid according to claim 1 or 2, wherein: the reinforcing ribs are provided with nodes and/or ribs.
7. The bi-directional plastic geogrid according to claim 1 or 2, wherein: and the reinforcing ribs are provided with through holes and/or blind holes.
8. The bi-directional plastic geogrid according to claim 1 or 2, wherein: the projection pattern of the grid cavity holes of the single geogrid mesh is fillet trilateral, fillet quadrilateral, fillet pentagonal, fillet hexagonal, fillet octagonal, trilateral, quadrilateral, pentagonal, hexagonal, octagonal, curve polygonal, runway-shaped or oval and the combination of the shapes.
9. A method of manufacturing a bi-directional plastic geogrid according to any one of claims 1 to 8, comprising the steps of:
(1) extruding a polymer plate with specified thickness and width by using thermoplastic plastic particles and additives through an extruder, wherein the temperature of the extruder is controlled to be 100-400 ℃;
(2) manufacturing a plastic pore plate with a vertically and/or horizontally widened pore gap, wherein the ratio of the width of the widened pore gap to the width of the pore gap which is not widened is more than or equal to 1.8;
(3) the plastic hole plate with the widened hole gap is subjected to biaxial stretching in the vertical direction and the horizontal direction; the stretching temperature is controlled to be 80-380 ℃; or when the body of the biaxial stretching bidirectional plastic geogrid is in a thermal deformation state through heat absorption, applying external force to the geogrid to realize triaxial stretching, wherein the direction of the external force forms an acute angle with the included angle of a transverse stretching plane;
(4) manufacturing concave and convex points on the upper and lower bottom surfaces of a vertical whole-width long reinforcing rib, arranging a die with certain patterns on a transverse stenter, and simultaneously manufacturing the concave and/or convex points on the upper and/or lower bottom surfaces of the vertical reinforcing rib when the grating is transversely stretched.
10. A method of manufacturing a bi-directional plastic geogrid according to claim 9, wherein: another preferable method for manufacturing the full-width long reinforcing ribs and the concave and convex points on the upper and lower bottom surfaces of the nodes is to manufacture the full-width long reinforcing ribs and the concave and convex points on the upper and lower bottom surfaces of the nodes by using the biaxial-stretched or triaxial-stretched bidirectional plastic geogrid through a specific mold press roll or a laser printer in a thermal deformation state of the bidirectional plastic geogrid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911387607.9A CN110884177A (en) | 2019-12-30 | 2019-12-30 | Bidirectional plastic geogrid and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911387607.9A CN110884177A (en) | 2019-12-30 | 2019-12-30 | Bidirectional plastic geogrid and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110884177A true CN110884177A (en) | 2020-03-17 |
Family
ID=69753423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911387607.9A Pending CN110884177A (en) | 2019-12-30 | 2019-12-30 | Bidirectional plastic geogrid and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110884177A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114232589A (en) * | 2021-12-16 | 2022-03-25 | 南昌宇德新材料有限公司 | Plastic geogrid, geogrid starting material and method for manufacturing geogrid |
-
2019
- 2019-12-30 CN CN201911387607.9A patent/CN110884177A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114232589A (en) * | 2021-12-16 | 2022-03-25 | 南昌宇德新材料有限公司 | Plastic geogrid, geogrid starting material and method for manufacturing geogrid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE60313978T2 (en) | EARTH DUCT OR GRATED CONSTRUCTION | |
| US5419659A (en) | Plastic material mesh structure | |
| EP0062462B1 (en) | Plastics material mesh structure | |
| DE1913773A1 (en) | Mesh-like openwork structure | |
| WO2010012353A1 (en) | Foamed plastic board | |
| JPS6358091B2 (en) | ||
| JPH0470137B2 (en) | ||
| EP3505684A1 (en) | Reinforced geogrid and method for producing same | |
| CN110884177A (en) | Bidirectional plastic geogrid and manufacturing method thereof | |
| DE1504196A1 (en) | Process for the production of fiber-reinforced synthetic resin panels with inner bars | |
| CN109853513B (en) | Geocell and preparation method thereof | |
| CN211363568U (en) | Bidirectional plastic geogrid | |
| DE602004007678T2 (en) | VELCRO ELEMENTS | |
| CN208039219U (en) | A kind of hexagon grid with node | |
| CN103889696B (en) | Mesh structure, production and uses thereof | |
| DE69923644T2 (en) | Resin mesh and its production process | |
| CN103850238A (en) | Plate manufacturing method and stereoscopic structure manufactured thereby | |
| CN216428227U (en) | Plastic geogrid and grid starting material | |
| CN202645597U (en) | Plastic geogrid in the shape of a Chinese character "tian" | |
| CN112012191A (en) | Bidirectional three-dimensional stretching geogrid and manufacturing method thereof | |
| CN114232589A (en) | Plastic geogrid, geogrid starting material and method for manufacturing geogrid | |
| CN214005645U (en) | Multidirectional plastic stretching geogrid | |
| CN211421092U (en) | Bidirectional stretching soil body adds muscle grid | |
| CN210500796U (en) | Reinforcing mesh of plastic hollow ball joint | |
| CN202187332U (en) | Triangular mesh grid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |