CN113584673A

CN113584673A - Tarpaulin, manufacturing method thereof and dumper

Info

Publication number: CN113584673A
Application number: CN202110984413.8A
Authority: CN
Inventors: 曾云路; 向泽山; 王志山
Original assignee: Sany Special Vehicle Co Ltd
Current assignee: Sany Special Vehicle Co Ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2021-11-02

Abstract

The application provides a tarpaulin and a manufacturing method thereof and a dumper, and solves the technical problems that in the prior art, the tarpaulin is low in tensile and tearing resistance and is still easy to damage in the using process. The application provides a base cloth in tarpaulin includes: warp yarns including a first warp yarn and a second warp yarn disposed between two adjacent first warp yarns; and weft yarns comprising first weft yarns and second weft yarns arranged between two adjacent first weft yarns; the first warp yarns and the first weft yarns are aramid yarns, and the second warp yarns and the second weft yarns are polyester yarns. In the whole latticed base cloth, aramid warp yarns are inserted among the polyester warp yarns, aramid weft yarns are inserted among the polyester weft yarns, and the aramid yarns are made of aramid fibers which have higher strength and toughness, so that the tensile and tear resistance of the tarpaulin is improved; the aramid yarn is inserted in the polyester yarn, so that the production cost of the tarpaulin is reduced.

Description

Tarpaulin, manufacturing method thereof and dumper

Technical Field

The application relates to the field of engineering machinery, in particular to tarpaulin, a manufacturing method thereof and a dumper.

Background

The dump truck refers to a vehicle which unloads cargos by self through hydraulic or mechanical lifting. In civil engineering, a dump truck is often operated in conjunction with an engineering machine such as an excavator, a loader, a belt conveyor, etc. to form a loading, transporting, and unloading line for loading, unloading, and transporting earthwork, gravel, and bulk materials.

Because the upper part of the carriage of the dump truck is not provided with the top cover, the goods are basically exposed to the natural environment, the goods lack effective covering and protection in the transportation process, a plurality of problems exist, the problem of throwing often occurs, and the secondary pollution to the environment is easily caused. Therefore, when transporting goods, the goods are generally covered by the tarpaulin on the top of the carriage, so that the probability of secondary pollution to the environment due to goods throwing can be reduced.

Among the prior art, the tensile strength of tipper tarpaulin is and tear strength is higher, but tensile tear resistance is on the low side, and the tarpaulin is still damaged very easily in the use.

Disclosure of Invention

In view of this, the application provides a tarpaulin and a manufacturing method thereof and a dumper, and solves the technical problems that in the prior art, the tarpaulin is low in tensile and tear resistance and is still easy to damage in the use process.

According to an aspect of the present application, there is provided a tarpaulin, including: a base cloth; wherein, the base cloth includes: warp yarns including a first warp yarn and a second warp yarn disposed between two adjacent first warp yarns; and weft yarns comprising first weft yarns and second weft yarns arranged between two adjacent first weft yarns; the warp yarns and the weft yarns are interwoven into a grid shape; the first warp yarns and the first weft yarns are aramid yarns, and the second warp yarns and the second weft yarns are polyester yarns.

In one possible implementation, the base fabric includes: a first region; and a second region disposed outside the first region; wherein the density of the aramid yarn of the second region is greater than the density of the aramid yarn of the first region.

In one possible implementation, a vertical distance between two adjacent first warp yarns in the first region is greater than a vertical distance between two adjacent first warp yarns in the second region; the vertical distance between two adjacent first weft yarns in the second region is equal to the vertical distance between two adjacent first weft yarns in the first region.

In one possible implementation, the vertical distance between two adjacent first weft yarns in the first region is greater than the vertical distance between two adjacent first weft yarns in the second region; the perpendicularity between two adjacent first warp yarns in the second region is equal to the perpendicular distance between two adjacent first warp yarns in the first region.

In one possible implementation, the vertical distance between two adjacent first weft yarns in the first region is greater than the vertical distance between two adjacent first weft yarns in the second region; the perpendicularity between two adjacent first warp yarns in the second region is less than the perpendicular distance between two adjacent first warp yarns in the first region.

In a possible implementation manner, in the first area, the vertical distance between two adjacent first warps is 4-6 cm; in the second area, the vertical distance between two adjacent first warps is 1-2 cm.

In one possible implementation, in the first direction, the perpendicular distance between two adjacent first warp yarns in the second region gradually decreases; and the vertical distances between two adjacent first weft yarns in the second region are equal; the first direction is parallel to the weft yarns, and the first direction points to the second area by taking the center point of the first area as a starting point.

In one possible implementation, the warp yarns include first warp yarns and a plurality of second warp yarns disposed between two adjacent first warp yarns; the weft yarns include first weft yarns and a plurality of second weft yarns disposed between adjacent two of the first weft yarns.

In a possible implementation manner, the vertical distances between any two adjacent second warp yarns located between two adjacent first warp yarns are equal, and the vertical distances between any two adjacent second weft yarns located between two adjacent first weft yarns are equal.

In one possible implementation, the tarpaulin further comprises: a first protective layer and a second protective layer respectively disposed on two opposite sides of the base fabric.

As a second aspect of the present application, there is also provided a method of manufacturing a tarpaulin, wherein the tarpaulin comprises a base cloth and a first protective layer and a second protective layer respectively disposed on two opposite sides of the base cloth; the manufacturing method of the tarpaulin comprises the following steps: preparing the base fabric; coating polyethylene on the first surface of the base fabric to form the first protective layer; coating polyethylene on the second surface of the base cloth to form the second protective layer; wherein the first surface and the second surface are two opposite surfaces of the base cloth.

In one possible implementation, coating polyethylene on the first surface of the base fabric to form the first protective layer includes: step S101: coating polyethylene on the first surface of the base fabric, and drying the coated polyethylene to form a polyethylene sub-coating; step S102: repeating the operation of the step S101 at least once to obtain at least one polyethylene sub-coating; wherein the first protective layer comprises a plurality of the polyethylene subcoats.

In one possible implementation manner, when the coated polyethylene is dried for the second time, the drying temperature is 150-200 ℃.

In a possible implementation, the drying temperature is gradually increased.

In one possible implementation, the thickness of the polyethylene sub-coating formed after each drying is gradually increased.

As a third aspect of the present application, there is provided a dump truck comprising: tarpaulin;

wherein the tarpaulin adopts the tarpaulin; or

The manufacturing method of the tarpaulin adopts the manufacturing method of the tarpaulin.

The application provides a base cloth in tarpaulin includes: warp yarns including a first warp yarn and a second warp yarn disposed between two adjacent first warp yarns; and weft yarns comprising first weft yarns and second weft yarns arranged between two adjacent first weft yarns; the warp yarns and the weft yarns are interwoven into a grid shape; the first warp yarns and the first weft yarns are aramid yarns, and the second warp yarns and the second weft yarns are polyester yarns. In whole latticed base cloth promptly, alternate aramid yarn warp between the dacron warp, alternate aramid weft between the dacron weft, because aramid yarn's material is aramid fiber, aramid fiber has higher intensity and toughness, has consequently increased the tensile tear resistance performance of tarpaulin, and because aramid yarn alternates in dacron yarn, has reduced the manufacturing cost of tarpaulin.

Drawings

FIG. 1 is a schematic view of an exemplary tarpaulin of the present application;

FIG. 2 is a schematic view illustrating a structure of a base fabric of an exemplary tarpaulin of the present application;

FIG. 3 is a schematic view of a base fabric of another exemplary tarpaulin of the present application;

FIG. 4 is a schematic view of a base fabric of another exemplary tarpaulin of the present application;

FIG. 5 is a schematic view of a base fabric of another exemplary tarpaulin of the present application;

FIG. 6 is a schematic view of a base fabric of another exemplary tarpaulin of the present application;

FIG. 7 is a schematic view of a base fabric of another exemplary tarpaulin of the present application;

FIG. 8 is a schematic view of a base fabric of another exemplary tarpaulin of the present application;

FIG. 9 is a schematic view of a base fabric of another exemplary tarpaulin of the present application;

fig. 10 is a schematic flow chart illustrating an exemplary method of manufacturing the tarpaulin of the present application.

Detailed Description

In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. All directional indicators in the embodiments of the present application (such as upper, lower, left, right, front, rear, top, bottom … …) are only used to explain the relative positional relationship between the components, the movement, etc. in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Furthermore, reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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 application.

Fig. 1 is a schematic structural view of the tarpaulin provided by the present application, and fig. 2 to 4 are schematic structural views of a base cloth 100 of the tarpaulin provided by the present application. As shown in fig. 1, the tarpaulin includes: a base fabric 100; and a first protective layer 200 and a second protective layer 300 respectively disposed on two opposite sides of the base fabric 100. Wherein, the first protective layer 200 and the second protective layer 300 can increase the wear resistance and the waterproof property of the tarpaulin.

As shown in fig. 2 to 4, the base fabric 100 includes: warp yarns including a first warp yarn 103 and a second warp yarn 104 disposed between two adjacent first warp yarns 103; and weft yarns including first weft yarns 101 and second weft yarns 102 disposed between adjacent two of the first weft yarns 101; the first warp yarns 103, the second warp yarns 104, the first weft yarns 101 and the second weft yarns 102 are interwoven in a grid shape; the first warp yarns 103 and the first weft yarns 101 are aramid yarns, and the second warp yarns 104 and the second weft yarns 102 are polyester yarns.

Wherein, the second warp yarn 104 is disposed between two adjacent first warp yarns 103, wherein the number of the second warp yarns 104 disposed between two adjacent first warp yarns 103 may be one, as shown in fig. 2, or may be multiple, as shown in fig. 3-4 and fig. 4. Similarly, the second weft yarns 102 are arranged between two adjacent first weft yarns 101, and the number of the second weft yarns 102 arranged between two adjacent first weft yarns 101 can also be one, as shown in fig. 2, or multiple, as shown in fig. 3-4.

When the number of the second warp yarns 104 disposed between two adjacent first weft yarns 103 is plural, and the number of the second weft yarns 102 disposed between two adjacent first weft yarns 101 is also plural, the number of the second warp yarns 104 between two adjacent first warp yarns 103 and the number of the second weft yarns 102 between two adjacent first weft yarns 101 may be equal, for example, 3, as shown in fig. 3. The number of the second warp yarns 104 between two adjacent first warp yarns 103 and the number of the second weft yarns 102 between two adjacent first weft yarns 101 may also be unequal, as shown in fig. 4, the number of the second warp yarns 104 is 3, and the number of the second weft yarns 102 is 2.

The present application provides a base fabric 100 in a tarpaulin, including: warp yarns including a first warp yarn 103 and a second warp yarn 104 disposed between two adjacent first warp yarns 103; and weft yarns including first weft yarns 101 and second weft yarns 102 disposed between adjacent two of the first weft yarns 101; the warp yarns and the weft yarns are interwoven into a grid shape; the first warp yarns 103 and the first weft yarns 101 are aramid yarns, and the second warp yarns 104 and the second weft yarns 102 are polyester yarns. In whole latticed base cloth 100 promptly, alternate aramid warp between the dacron warp, alternate aramid woof between the dacron woof, because aramid yarn's material is aramid fiber, aramid fiber has higher intensity, toughness and durability, has consequently increased the tensile tear resistance performance of tarpaulin, and because aramid yarn alternates in dacron yarn, has reduced the manufacturing cost of tarpaulin.

In a possible implementation manner, fig. 5 to 9 are schematic structural diagrams of a base cloth 100 in the tarpaulin provided by the present application, and as shown in fig. 5 to 9, the base cloth 100 includes: a first region Q1; and a second region Q2 disposed outside the first region Q1; wherein the density of the aramid yarns in the first region Q1 is less than the density of the aramid yarns in the second region Q2. Because the marginal area of tarpaulin needs to be connected with other positions, consequently, in-service use, the marginal area's of tarpaulin impaired great, consequently, in this region department, aramid yarn's density is great, when can guaranteeing that the edge of tarpaulin has higher toughness and intensity and can improve tensile tearing resistance ability, reduces the manufacturing cost of tarpaulin as far as.

Specifically, the second region Q2 may be disposed in any region outside the first region Q1, for example, the positional relationship between the second region Q2 and the first region Q1 may include, but is not limited to, the following six cases:

(1) the second region Q2 may be provided only on one outer side or both outer sides of the first region Q1 in the first direction X, as shown in fig. 5 or 8;

(2) the second region Q2 may be provided only on one outer side or both outer sides of the first region Q1 in the second direction Y, as shown in fig. 9;

(3) the second region Q2 may be provided only on an outer side of the first region Q1 in the first direction X and on an outer side of the first region Q1 in the second direction Y;

(4) the second region Q2 may be provided only on both outer sides of the first region Q1 in the first direction X and on one outer side of the first region Q1 in the second direction Y;

(5) the second region Q2 may be provided only on one outer side of the first region Q1 in the first direction X, and on both outer sides of the first region Q1 in the second direction Y;

(6) the second region Q2 may be provided only on both outer sides of the first region Q1 in the first direction X and on both outer sides of the first region Q1 in the second direction Y, that is, the second region Q2 surrounds the first region Q1, as shown in fig. 7. In particular, the specific implementation mode that the density of the aramid yarns in the first region Q1 is less than that of the aramid yarns in the second region Q2 can include the following three cases:

(1) as shown in FIG. 5, the vertical distance between two adjacent first warp yarns 103 in the first region Q1 is a first distance, and the vertical distance between two adjacent first warp yarns 103 in the second region Q2 is a second distance; the first distance is greater than the second distance, and the perpendicular distance between two adjacent first weft yarns 101 in the first region Q1 is equal to the perpendicular distance between two adjacent first weft yarns 101 in the second region Q2. That is, the vertical distance between the first warp yarns 103 in the first region Q1 is greater than the vertical distance between the first warp yarns 103 in the second region Q2, and the vertical distance between the first weft yarns 101 in the first region Q1 is equal to the vertical distance between the first weft yarns 101 in the second region Q2, it is possible to make the density of the aramid yarn in the first region Q1 smaller than that of the aramid yarn in the second region Q2.

Specifically, in the first region Q1, the vertical distance between two adjacent first warp yarns 103 is 4-6 cm, and preferably, the vertical distance between two adjacent first warp yarns 103 is 2.54 cm; in the second region Q2, the vertical distance between two adjacent first warp yarns 103 is 1-2 cm, and preferably, the vertical distance between two adjacent first warp yarns 103 is 1.274 cm.

(II) As shown in FIG. 6, the perpendicular distance between two adjacent first warp yarns 103 in the first region Q1 is a first distance, and the perpendicular distance between two adjacent first warp yarns 103 in the second region Q2 is a second distance; the first distance is equal to the second distance and the perpendicular distance between two adjacent first weft yarns 101 in the first region Q1 is greater than the perpendicular distance between two adjacent first weft yarns 101 in the second region Q2. That is, the vertical distance between the first warp yarns 103 in the first region Q1 is equal to the vertical distance between the first warp yarns 103 in the second region Q2, and the vertical distance between the first weft yarns 101 in the first region Q1 is greater than the vertical distance between the first weft yarns 101 in the second region Q2, so that the density of the aramid yarn in the first region Q1 is less than that of the aramid yarn in the second region Q2.

(III) As shown in FIG. 7, the perpendicular distance between two adjacent first warp yarns 103 in the first region Q1 is a first distance, and the perpendicular distance between two adjacent first warp yarns 103 in the second region Q2 is a second distance; the first distance is greater than the second distance, and the greater distance between adjacent two first weft yarns 101 in the first region Q1 is greater than the perpendicular distance between adjacent two first weft yarns 101 in the second region Q2. That is, the vertical distance between the first warp yarns 103 in the first region Q1 is equal to the vertical distance between the first warp yarns 103 in the second region Q2, and the vertical distance between the first weft yarns 101 in the first region Q1 is greater than the vertical distance between the first weft yarns 101 in the second region Q2, so that the density of the aramid yarn in the first region Q1 is less than that of the aramid yarn in the second region Q2.

It should be noted that: in the first region Q1 and the second region Q2, since the density of the aramid yarn in the second region Q2 is greater than that of the aramid yarn in the first region Q1, the second region Q2 may be an edge region of the entire tarpaulin, or may be a region in the entire tarpaulin where one of the regions is easily damaged, for example, a central region of the entire tarpaulin. In addition, the number of the second regions Q2 in the entire tarpaulin is not limited to one, and may be plural. Therefore, the present application does not limit the specific position of the second region Q2.

In one possible implementation, as shown in fig. 8, in the first direction X, the vertical distance between two adjacent first warp yarns 103 in the second region Q2 gradually decreases, and the vertical distance between two adjacent first weft yarns 101 in the second region Q2 is equal; the first direction X is parallel to the weft yarns, and the first direction X points to the second region Q2 with the center point of the first region Q1 as the starting point. Can be so that in second region Q2, more to the border position of tarpaulin, aramid yarn's density is bigger, when further strengthening the tensile tear resistance at tarpaulin edge, reduces aramid yarn's use amount to the cost of tarpaulin has been reduced.

In one possible implementation, as shown in fig. 9, in the second direction Y, the vertical distance between two adjacent first weft yarns 101 in the second region Q2 gradually decreases, the vertical distance between two adjacent first warp yarns 103 in the second region Q2 is equal, the second direction Y is parallel to the warp yarns, and the second direction Y is directed to the second region Q2 with the center point of the first region Q1 as the starting point. Similarly, in the second area Q2, the density of the aramid yarn is higher toward the edge of the tarpaulin, so that the tensile tearing resistance of the edge of the tarpaulin is further enhanced, and the usage amount of the aramid yarn is reduced, thereby reducing the cost of the tarpaulin.

In one possible implementation, the average density of the base fabric 100 is: in the area of 2.54 cubic centimeters, the number of weft yarns is less than or equal to 30, and the number of warp yarns is less than or equal to 30. The cloth weaving density of the tarpaulin is improved.

In one possible implementation, when the warp yarns include a first warp yarn 103 and a plurality of second warp yarns 104 disposed between two adjacent first warp yarns 103; when the weft yarns comprise the first weft yarns 101 and the plurality of second weft yarns 102 arranged between two adjacent first weft yarns 101, the vertical distances between any two adjacent second warp yarns 104 between two adjacent first warp yarns 103 are equal, and the vertical distances between any two adjacent second weft yarns 102 between two adjacent first weft yarns 101 are equal, that is, in the whole base fabric 100, the vertical distances between the polyester yarns are equal, so that the densities of the polyester yarns are more average in the edge area and the central area of the base fabric 100.

In a possible implementation manner, the materials of the first protection layer 200 and the second protection layer 300 are both polyethylene, so that the surface of the whole tarpaulin can be smooth, and the waterproof property and the wear resistance of the whole tarpaulin can be increased.

As a third aspect of the present application, there is also provided a method of manufacturing a tarpaulin, wherein the tarpaulin includes a base cloth and first and second protection layers respectively disposed on two opposite sides of the base cloth. As shown in fig. 10, the method for manufacturing the tarpaulin comprises the following steps:

step S101: preparing base cloth;

step S102: coating polyethylene on the first surface of the base cloth to form a first protective layer; and

step S103: coating polyethylene on the second surface of the base cloth to form a second protective layer; wherein, the first surface and the second surface are two opposite surfaces of the base cloth.

Specifically, step S102 (coating polyethylene on the first surface of the base fabric to form the first protective layer) may include the following steps:

step S1: coating polyethylene on the first surface of the base fabric, and drying the coated polyethylene to form a polyethylene sub-coating;

step S2: repeating the operation of step S1 at least once to obtain at least one polyethylene sub-coating;

wherein the first protective layer comprises a plurality of polyethylene subcoats. Namely one polyethylene sub-coat formed in step S1 and at least one polyethylene sub-coat obtained in step S2.

Specifically, the drying temperature is 150-200 ℃ when the coated polyethylene is dried each time. Specifically, each drying temperature may be equal or unequal (e.g., gradually increasing, or gradually decreasing, or increasing and then decreasing).

Specifically, the thickness of the polyethylene coated in each time can be equal or unequal (such as gradually increasing, gradually decreasing, increasing and decreasing, etc.)

In one possible implementation, the operation of step S1 is repeated twice in step S2, i.e., the whole step S102 may include the following steps:

step S1021: coating polyethylene on the first surface of the base cloth for the first time, and drying the polyethylene coated for the first time to form a first polyethylene coating;

step S1022: coating polyethylene on the surface of the first polyethylene coating layer, which is far away from the base cloth, for the second time, and drying the polyethylene coated for the second time to form a second polyethylene coating layer; and

step S1023: coating polyethylene for the third time on the surface of the second polyethylene coating layer, which is far away from the first polyethylene coating layer, and drying the polyethylene coated for the third time to form a third polyethylene coating layer;

wherein the first protective layer comprises a first polyethylene coating, a second polyethylene coating, and a third polyethylene coating.

That is, when the first protective layer is coated on both opposite surfaces of the base fabric 100, the polyethylene may be coated in three times, and a three-time coating-drying process is employed, so that the bonding force between the first protective layer and the base fabric is increased, and in addition, the abrasion resistance of the polyethylene coating layer can be increased.

Specifically, when the first protective layer is manufactured, the drying temperature of the first drying, the second drying and the third drying is 150-200 ℃.

Specifically, when the first protective layer 200 is formed on one surface of the base fabric 100 by the three-pass coating-drying process, the thickness of the polyethylene coating layer coated in three passes may be the same, and the drying temperature may also be the same; the thickness of the polyethylene coating coated for three times can be different, and the drying temperature can also be different, for example, the thickness of the polyethylene coating coated for three times is gradually increased, and the drying temperature is also gradually increased; or the thickness of the polyethylene coating coated for three times is gradually reduced, and the drying temperature is also gradually reduced.

Similarly, step S103 (coating polyethylene on the second surface of the base fabric to form the second protective layer) may also include the following steps:

step S1031: coating polyethylene on the second surface of the base cloth for the fourth time, and drying the polyethylene coated for the fourth time to form a fourth polyethylene coating;

step S1032: coating polyethylene on the surface, far away from the base cloth, of the fourth polyethylene coating for the fifth time, and performing fifth drying on the polyethylene coated for the fifth time to form a fifth polyethylene coating; and

step S1033: coating polyethylene on the surface, away from the fourth polyethylene coating, of the fifth polyethylene coating for the sixth time, and drying the polyethylene coated for the sixth time to form a sixth polyethylene coating; wherein the second protective layer comprises a fourth polyethylene coating, a fifth polyethylene coating and a sixth polyethylene coating.

That is, when the polyethylene is coated on the other surface of the base fabric 100 to form the second protective layer 300, the coating-drying process may be performed three times, so that the bonding force between the second protective layer 300 and the base fabric 100 is increased, and in addition, the abrasion resistance of the polyethylene coating layer can be increased.

Similarly, when the second protective layer 300 is formed on one surface of the base fabric 100 by the three-time coating-drying process, the thickness of the polyethylene coating layers coated three times may be the same, and the drying temperature may also be the same; the thickness of the polyethylene coating coated for three times can be different, and the drying temperature can also be different, for example, the thickness of the polyethylene coating coated for three times is gradually increased, and the drying temperature is also gradually increased; or the thickness of the polyethylene coating coated for three times is gradually reduced, and the drying temperature is also gradually reduced.

Specifically, when the first protective layer 200 and the second protective layer 300 are formed on one surface of the base fabric 100 by the three coating-drying processes, the processes for coating the polyethylene may be the same or different.

As a second aspect of the present application, the present application also provides a dump truck comprising: the tarpaulin.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and the like that fall within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A tarpaulin, characterized by, includes:

a base cloth;

wherein, the base cloth includes:

warp yarns including a first warp yarn and a second warp yarn disposed between two adjacent first warp yarns; and

the weft yarns comprise first weft yarns and second weft yarns arranged between two adjacent first weft yarns;

the warp yarns and the weft yarns are interwoven into a grid shape;

the first warp yarns and the first weft yarns are aramid yarns, and the second warp yarns and the second weft yarns are polyester yarns.

2. The tarpaulin of claim 1,

the base fabric comprises:

a first region; and

a second region disposed outside the first region; wherein the density of the aramid yarn of the second region is greater than the density of the aramid yarn of the first region.

3. The tarpaulin of claim 2,

a vertical distance between two adjacent first warp yarns in the first region is greater than a vertical distance between two adjacent first warp yarns in the second region;

the vertical distance between two adjacent first weft yarns in the second region is equal to the vertical distance between two adjacent first weft yarns in the first region.

4. The tarpaulin of claim 2,

the vertical distance between two adjacent first weft yarns in the first area is larger than that between two adjacent first weft yarns in the second area;

the perpendicularity between two adjacent first warp yarns in the second region is equal to the perpendicular distance between two adjacent first warp yarns in the first region.

5. The tarpaulin of claim 2,

the perpendicularity between two adjacent first warp yarns in the second region is less than the perpendicular distance between two adjacent first warp yarns in the first region.

6. The tarpaulin of claim 3, wherein in the first area, a vertical distance between two adjacent first warps is 4-6 cm; in the second area, the vertical distance between two adjacent first warps is 1-2 cm.

7. The tarpaulin of claim 3, wherein in a first direction, a vertical distance between two adjacent first warps in the second area is gradually decreased; and the vertical distances between two adjacent first weft yarns in the second region are equal;

the first direction is parallel to the weft yarns, and the first direction points to the second area by taking the center point of the first area as a starting point.

8. The tarpaulin of claim 1,

the warp yarns comprise first warp yarns and a plurality of second warp yarns arranged between two adjacent first warp yarns; the weft yarns include first weft yarns and a plurality of second weft yarns disposed between adjacent two of the first weft yarns.

9. The tarpaulin of claim 8,

the vertical distances between any two adjacent second warp yarns positioned between two adjacent first warp yarns are equal, and the vertical distances between any two adjacent second weft yarns positioned between two adjacent first weft yarns are equal.

10. The tarpaulin of claim 1, further comprising:

a first protective layer and a second protective layer respectively disposed on two opposite sides of the base fabric.

11. The manufacturing method of the tarpaulin is characterized in that the tarpaulin comprises a base cloth and a first protective layer and a second protective layer which are respectively arranged on two opposite surfaces of the base cloth; the manufacturing method of the tarpaulin comprises the following steps:

preparing the base fabric;

coating polyethylene on the first surface of the base fabric to form the first protective layer; and

coating polyethylene on the second surface of the base fabric to form the second protective layer;

wherein the first surface and the second surface are two opposite surfaces of the base cloth.

12. The method as claimed in claim 11, wherein the step of coating the polyethylene on the first surface of the base fabric to form the first protective layer comprises:

wherein the first protective layer comprises a plurality of the polyethylene subcoats.

13. The tarpaulin of claim 12, wherein the drying temperature is 150 to 200 ℃ each time the coated polyethylene is dried.

14. The tarpaulin of claim 13, wherein the drying temperature is gradually increased.

15. The tarpaulin of claim 14, wherein the thickness of the polyethylene sub-coating layer formed after each drying is gradually increased.

16. A dump truck, comprising: tarpaulin;

the tarpaulin adopts the tarpaulin of any one of claims 1 to 10; or

The method for manufacturing the tarpaulin adopts the method for manufacturing the tarpaulin as claimed in any one of claims 11 to 15.