Heavy-load scribing paste

Abstract

The invention provides a heavy-load scribing paste which can prevent the edge of the heavy-load scribing paste from tilting as much as possible. A heavy-load scribing paste comprises a base material, the base material comprises a main body and two slope transition parts, in the width direction of the base material, the main body is located between the two slope transition parts and connected with the two slope transition parts respectively, the slope transition parts are used for abutting against the ground, and each slope transition part is provided with an upper slope surface; the adhesive layer is arranged on the lower surface of the main body and is used for being bonded with the ground; wherein the upper slope surface is an arc-shaped curved surface, the upper slope surface comprises an upper starting end and a tail end, the upper slope surface obliquely extends downwards in the direction from the upper starting end to the tail end, and the upper slope surface is tangent to the upper surface of the main body at the upper starting end.

Description

Technical Field

[0001] This application relates to the field of adhesive tape technology, and more specifically, to a heavy-duty marking tape. Background Technology

[0002] With the rapid development of intelligent manufacturing and warehousing logistics, automated guided vehicles (AGVs), forklifts, trolleys, and other material handling equipment have become core equipment for automated material handling and circulation in industrial settings. To standardize work paths, delineate functional areas, and highlight potential risks, heavy-duty marking stickers are widely used in various industrial scenarios. These stickers provide basic protection for floors and critical work areas, offer guidance and area identification for AGVs and forklifts, and are essential auxiliary materials for ensuring orderly operation and improving workplace safety.

[0003] However, the industrial working environment is complex, and heavy-duty marking stickers need to withstand high-frequency rolling, turning shearing, and oblique crushing from equipment such as AGVs, forklifts, and heavy-duty trolleys for extended periods. They are also susceptible to multiple factors, including oil erosion, water immersion, human trampling, and impacts from external objects. Under prolonged heavy loads and complex working conditions, heavy-duty marking stickers are prone to problems such as edge lifting and curling. Summary of the Invention

[0004] This application provides a heavy-duty marking sticker that can minimize the risk of the edges of the heavy-duty marking sticker curling up.

[0005] A heavy-duty line-marking sticker includes: The substrate includes a main body and two sloping transition portions. Along the width direction of the substrate, the main body is located between the two sloping transition portions and is connected to each of the two sloping transition portions. The sloping transition portions are used to abut against the ground and have an upper sloping surface. An adhesive layer is provided on the lower surface of the main body for bonding with the ground; The upper slope surface is an arc-shaped curved surface, which includes an upper starting end and an upper ending end. The upper slope surface extends obliquely downward in the direction from the upper starting end to the upper ending end. At the upper starting end, the upper slope surface is tangent to the upper surface of the main body.

[0006] In some alternative embodiments, at the upper starting end, the curvature of the upper ramp surface is 0.

[0007] In some alternative embodiments, the slope of the upper ramp surface gradually increases in the direction from the upper starting end to the end end.

[0008] In some alternative embodiments, the upper slope surface is a curved surface with continuously varying curvature.

[0009] In some alternative embodiments, the profile of the cross-section of the upper slope surface is a smoothstep function curve or a power function curve.

[0010] In some alternative embodiments, the profile of the cross-section of the upper slope surface satisfies the following function: ; in, The width of the slope transition section. Scaling factor This is the maximum height of the upper slope surface. The coordinates of the horizontal position within the cross-section of the upper sloping surface, along the width direction of the substrate, pointing from the upper starting end to the lower end. The horizontal coordinates within the cross-section of the upper slope surface Vertical height coordinates at the location; In some alternative embodiments, the profile of the cross-section of the upper slope surface satisfies the following function: ; in, This is the maximum height of the upper slope surface. The width of the upper slope surface. The first velocity variation constant, The coordinates of the horizontal position within the cross-section of the upper sloping surface, along the width direction of the substrate, pointing from the upper starting end to the lower end. The horizontal coordinates within the cross-section of the upper slope surface The vertical height coordinates at the location.

[0011] In some alternative embodiments, the ramp transition has a lower ramp surface, which is an arcuate surface. The lower ramp surface includes a lower starting end and an end end, and extends obliquely downward in a direction from the lower starting end to the end end. At the end end, the slope of the lower ramp surface is 0.

[0012] In some alternative embodiments, at the end, the curvature of the lower slope surface is 0.

[0013] In some alternative embodiments, a buffer cavity is formed between the lower slope surface and the ground, and the lower slope surface is a curved surface with a continuously varying slope so that the contour of the buffer cavity changes continuously.

[0014] In some alternative embodiments, the lower slope surface is a curved surface with continuously varying curvature.

[0015] In some alternative embodiments, the profile of the cross-section of the lower slope surface is a smoothstep function curve or a power function curve.

[0016] In some alternative embodiments, the profile of the lower slope surface satisfies the following function: ; in, This represents the maximum height of the lower slope surface. The width of the slope transition section. The coordinates of the horizontal position along the width direction of the substrate within the cross-section of the lower slope surface, pointing from the lower starting end to the lower ending end. The horizontal coordinates within the cross-section of the lower slope surface Vertical height coordinates at the location; Alternatively, the profile of the lower slope surface satisfies the following function: ; in, The width of the slope transition section. The second velocity variation constant, The coordinates of the horizontal position along the width direction of the substrate within the cross-section of the lower slope surface, pointing from the lower starting end to the lower ending end. The horizontal coordinates within the cross-section of the lower slope surface Vertical height coordinates at the location; Alternatively, the profile of the lower slope surface satisfies the following function: ; in, This is the maximum height of the slope transition section. Where m is the width of the ramp transition section, and m is the third velocity variation constant. The coordinates of the horizontal position along the width direction of the substrate within the cross-section of the lower slope surface, pointing from the lower starting end to the lower ending end. The horizontal coordinates within the cross-section of the lower slope surface The vertical height coordinates at the location.

[0017] The solution provided in this application has at least the following advantages: This solution incorporates a sloping transition section at the edge of the heavy-duty marking sticker. The edge of the sticker is no longer a right angle but a sloping surface, allowing the load to be transferred and gradually dispersed along the transition section, thus reducing the risk of edge lifting and adhesive peeling. Furthermore, because the upper sloping surface is tangent to the main body, the contact conditions and equivalent stiffness changes more continuously when the wheels of the transport equipment enter the transition section from the main body. This reduces the rate of change of normal load and local stress concentration caused by geometrical abrupt changes, thereby lowering the risk of edge lifting, fatigue cracking, or premature adhesive failure at the connection between the main body and the transition section. Attached Figure Description

[0018] Figure 1 This is a schematic cross-sectional view of a heavy-duty scribing sticker as shown in one embodiment; Figure 2 This is a schematic cross-sectional profile of the ramp transition section shown in one embodiment; Figure 3 This is a schematic diagram of the cross-sectional profile of the ramp transition section along the coordinate axes, as shown in one embodiment. Figure 4 This is a schematic diagram of the cross-sectional profile of the ramp transition section along the coordinate axes, as shown in another embodiment. Figure 5 This is a schematic diagram of the cross-sectional profile of the ramp transition section on the coordinate axis, as shown in another embodiment.

[0019] Explanation of reference numerals in the attached figures: 10. Substrate; 11. Main body; 12. Sloping transition section; 121. Upper sloping surface; 122. Lower sloping surface; 123. Upper starting end; 124. Lower starting end; 125. End; 126. Buffer cavity; 20. Adhesive layer. Detailed Implementation

[0020] The technical solutions in the embodiments (or "implementations") of this specification will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0021] If the embodiments of this specification contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this specification are for descriptive convenience only and should not be construed as indicating or implying relative importance.

[0022] This application provides a heavy-duty scribing sticker. The heavy-duty scribing sticker will be described in detail below with reference to the accompanying drawings. Unless otherwise specified, the features in the following embodiments and implementation methods can be combined with each other.

[0023] Heavy-duty line marking stickers can be a type of heavy-duty line marking sticker. Specifically, in magnetic navigation AGV systems, magnetic strips serve as the core carrier for path identification and are typically laid on concrete, epoxy flooring, or anti-static flooring surfaces. The magnetic field signals they generate provide the AGV with precise path guidance. During long-term operation in industrial settings, magnetic strips are susceptible to damage from multiple factors, including AGV tire rolling, equipment crushing, human foot traffic, oil corrosion, water immersion, and impacts from external objects. This damage can lead to wear, breakage, or performance degradation of the magnetic strips, thus affecting the stability of the navigation system. The heavy-duty line marking sticker of this application can cover the magnetic strips, providing protection against wear, exposure, and fixation. Alternatively, the heavy-duty line marking sticker can be an indicator or marking tape. It uses its color (such as red, yellow, but not limited to) or reflective properties as a ground marker, providing clear area demarcation, path guidance, and safety warnings for workers and handling equipment. That is, the heavy-duty line marking sticker of this application can be directly laid on the ground to achieve area division, path guidance, safety warning, and secure adhesion through visual identification. Of course, in other embodiments, the heavy-duty line marking sticker can also be used for other purposes, which will not be elaborated here.

[0024] refer to Figure 1 and Figure 2 The heavy-duty marking sticker includes a substrate 10 and an adhesive layer 20. The substrate 10 includes a main body 11 and two sloping transition portions 12. Along the width direction of the substrate 10, the main body 11 is located between and connected to the two sloping transition portions 12. The sloping transition portions 12 are used to abut against the ground and have an upper sloping surface 121. The adhesive layer 20 is disposed on the lower surface of the main body 11 for bonding to the ground. The thickness of the main body 11 may be equal along the width direction of the substrate 10 to simplify the production and fabrication of the substrate 10, but is not limited to this.

[0025] The upper slope surface 121 is an arc-shaped curved surface. The upper slope surface 121 includes an upper starting end 123 and an end end 125. In the direction from the upper starting end 123 to the end end 125, the upper slope surface 121 extends obliquely downward. At the upper starting end 123, the upper slope surface 121 is tangent to the upper surface of the main body 11, that is, the slope (gradient) of the upper slope surface 121 is 0.

[0026] It is understandable that when AGVs and other handling equipment roll, turn, or obliquely roll over heavy-duty marking stickers, they will generate vertical impact forces and lateral shear forces on the edges of the marking stickers. The edges of the heavy-duty marking stickers are easily scooped up or lifted by the tires of the handling equipment, and may even be lifted or peeled off from the ground. This solution provides a ramp transition section 12 at the edge of the heavy-duty marking sticker. The edge of the heavy-duty marking sticker is no longer a right angle, but a ramp surface. The load can be transferred along the ramp transition section 12 and gradually dispersed, thereby reducing the risk of the heavy-duty marking sticker edge lifting and the adhesive layer 20 being peeled off. Furthermore, since the upper ramp surface 121 is tangent to the main body 11, when the wheels of the handling equipment enter the ramp transition section 12 from the main body 11, the contact conditions and equivalent stiffness changes are more continuous. Therefore, it can reduce the rate of change of normal load and local stress concentration caused by geometrical abrupt changes, thereby reducing the risk of edge lifting, fatigue cracking, or early failure of the adhesive layer at the connection between the main body 11 and the ramp transition section 12.

[0027] In some embodiments, the substrate 10 can be extruded, and the material of the substrate 10 is not limited and can be any material that can be extruded. For example, the substrate 10 can be a PVC (polyvinyl chloride) polymer. But it is not limited thereto.

[0028] In some embodiments, the curvature of the upper slope surface 121 at the upper starting end 123 is 0. That is, when the contour of the upper slope surface 121 is represented as a function, the second derivative of that function at the upper starting end 123 is 0.

[0029] A curvature of 0 means that at the upper starting end 123, there is no bend, abrupt change, or inflection point between the upper slope surface 121 and the upper surface of the main body 11. When the wheels of the transport equipment drive into or out of the slope transition section 12 from the area of ​​the main body 11, the contact stiffness, force direction, and load distribution gradually transition, and no additional normal impact and shear force will be generated due to local curvature abrupt change, which helps to reduce the stress peak at the connection.

[0030] At the upper starting end 123, the height of the upper slope surface 121 is equal to the height of the main body 11.

[0031] This ensures that there is no height difference between the upper surface of the main body 11 and the upper slope surface 121 at the connection point, forming a "flat transition" and avoiding step-like protrusions or depressions. Structurally, this prevents impacts and jamming caused by sudden changes in height when the wheel runs over it. At the same time, when the wheel enters the slope transition section 12 from the main body 11, the contact area and force direction can transition smoothly due to the lack of sudden height changes. The load can be evenly distributed along the upper slope surface 121, preventing the formation of localized stress peaks at the connection point and reducing shear and compressive forces at the connection location.

[0032] In some embodiments, the slope of the upper slope surface 121 gradually increases in the direction from the upper starting end 123 to the end end 125. That is, the slope of the upper slope surface 121 gradually increases.

[0033] In this way, the gentle slope near the upper starting end 123 ensures a relatively thick connection between the slope transition section 12 and the main body 11, thus guaranteeing structural rigidity and support strength. The slope of the upper slope surface 121 gradually increases towards the end 125, causing the thickness to decrease rapidly. This ensures that the end 125 of the slope transition section 12 also has a certain thickness, rather than being a thin film, thereby preventing the edges from curling up.

[0034] In some embodiments, the upper slope surface 121 is a curved surface with continuously varying curvature.

[0035] The continuous change in curvature means that the upper slope surface 121 has no inflection points, no bends, and no abrupt changes. When the wheels of the transport equipment drive from the main body 11 into the slope transition section 12, the contact stiffness, force direction, and load distribution will transition synchronously with the gradual change in the curvature of the surface. There will be no local stress concentration due to abrupt changes in curvature, which helps to reduce the local impact and shear force of the wheels on the slope transition section 12, thereby preventing local lifting.

[0036] In some embodiments, the ramp transition portion 12 has a lower ramp surface 122, which is an arc-shaped surface. The lower ramp surface 122 has a lower starting end 124 and an end end 125. In the direction from the lower starting end 124 to the end end 125, the lower ramp surface 122 extends obliquely downward. At the end end 125, the slope of the lower ramp surface 122 is 0, which is used to connect with the ground.

[0037] In this way, at the end 125, the lower slope surface 122 remains parallel to the ground, so that the contact establishment process between the slope transition part 12 and the ground no longer presents an abrupt change. This helps to reduce the transient impact and vibration response generated when the wheel presses into the edge, thereby reducing the probability of the heavy-load scribbling edge being "pulled up".

[0038] Furthermore, at the end 125, the curvature of the lower slope surface 122 is 0.

[0039] A curvature of 0 means that at the end position 125, there is no angle, abrupt change, or inflection point between the downslope surface 122 and the ground, further reducing the transient impact and vibration response generated when the wheel presses into the edge, thereby reducing the probability of the heavy-load scribbled edge being "lifted up".

[0040] In some embodiments, a buffer cavity 126 is formed between the lower slope surface 122 and the ground. The lower slope surface 122 is a curved surface with a continuously changing slope, so that the gap between the lower slope surface 122 and the ground gradually decreases, thereby making the contour of the buffer cavity 126 continuously change. This can eliminate local pressure concentration, realize the smooth buffering and release of pressure when the handling equipment rolls over it, and also allow the buffer cavity 126 to compress and rebound more smoothly with the elastic deformation of the substrate 10, which can absorb some deformation and impact energy, reduce the peeling and expansion speed of the heavy-duty scribing edge, and improve the edge anti-warping and anti-fatigue performance.

[0041] Furthermore, the lower slope surface 122 is a curved surface with continuously varying curvature.

[0042] The lower slope surface 122 adopts a curved surface with continuously changing curvature, which further eliminates the curvature abrupt point compared with the continuous slope structure, avoids stress concentration, and optimizes the ability of the buffer cavity 126 to absorb part of the deformation and impact energy.

[0043] In some embodiments, the profile of the cross-section of the upper slope surface 121 is a smoothstep function curve or a power function curve. It should be noted that a smoothstep function curve refers to a smooth curve constructed based on a smooth step transition function. A power function curve is a smooth curve constructed based on a power function (including integer powers, fractional powers, and radical powers), and is a type of curve with adjustable curvature and smooth transition.

[0044] In other words, the profile of the upper slope surface 121 can be determined by the smoothstep function curve or the power function curve. Therefore, during mass production, the upper slope surface 121 is more likely to obtain consistent geometric features and performance, reducing individual differences caused by empirical spline adjustments. At the same time, during improvement and iteration processes, the profile of the upper slope surface 121 can be adjusted simply by adjusting the parameters of the function, which is very simple and convenient.

[0045] Specifically, the profile of the cross-section of the upper slope surface 121 can be represented by the following function: in, The width of the ramp transition section 12, Scaling factor For the maximum height of the upper slope surface 121, the value of B is only related to C. The coordinates of the horizontal position within the cross-section of the upper sloping surface 121, along the width direction of the substrate 10, pointing from the upper starting end 123 to the lower end 125. The horizontal coordinates within the cross-section of the upper slope surface 121 The vertical height coordinates at the location.

[0046] The following provides a method The specific calculation method is unclear, but it is understandable. It is not limited to obtaining it based on this calculation method. When the value is 0 (i.e., the end of the upper slope surface is grounded), the above function formula is used to determine the result. The value is calculated. For example, in When the value is 0 (i.e., the end 125 of the ramp transition section 12 is grounded), It can be deduced that: Based on the derived function, the value of B depends only on C. For example, when C = 1.1 mm (i.e., the maximum height of the upper slope surface 121 or the maximum distance from the ground is 1.1 mm), B can be calculated to be approximately 0.40154. It should be noted that... , , The values ​​are not limited to these; those skilled in the art can set them as needed based on actual circumstances.

[0047] Alternatively, the profile of the cross-section of the upper slope surface 121 can be a function of the following: in, The maximum height of the upper slope surface 121 (i.e., the height of the upper starting end 123 from the ground) ), The width of the upper slope surface 121, The first velocity variation constant, The coordinates of the horizontal position within the cross-section of the upper sloping surface 121, along the width direction of the substrate 10, pointing from the upper starting end 123 to the end end 125. The horizontal coordinates within the cross-section of the upper slope surface 121 The vertical height coordinate at that location. For example, It can be, but is not limited to, 1.5mm (i.e., the maximum height of the upper slope surface 121 or the maximum distance from the ground is 1.1mm). It is possible but not currently 1.5mm (i.e., the width of the ramp transition section 12 or the upper ramp surface 121 is 1.5mm). It can be, but is not limited to, 5.

[0048] Similarly, in some embodiments, the profile of the cross section of the lower slope surface 122 is a smoothstep function curve or a power function curve.

[0049] Specifically, the profile of the cross-section of the downslope surface can satisfy the following function: in, The maximum height of the lower slope surface 122 (i.e. ), For the slope transition section 1 width, Within the cross-section of the lower sloping surface 122, along the width direction of the substrate 10, from the lower starting end 12 The horizontal coordinates pointing to the end 125 The horizontal coordinates within the cross-section of the lower slope surface 122 The vertical height coordinates at the location. For example, D may be, but is not limited to, 0.48 mm (i.e., the maximum height of the lower slope surface 122 or the distance between the lower starting end 124 and the ground is 0.48 mm), and E may be, but is not limited to, 1.5 mm (i.e., the width dimension of the slope transition 12 is 1.5 mm).

[0050] Alternatively, the profile of the cross-section of the lower slope surface 122 can satisfy the following function: in, For the slope transition section 1 width, The second velocity variation constant, The coordinates of the horizontal position within the cross-section of the lower sloping surface 122, along the width direction of the substrate 10, from the lower starting end 124 to the end end 125. The horizontal coordinates within the cross-section of the lower slope surface 122 The vertical height coordinates at the location. Among them, F can be, but is not limited to, 1.5mm (that is, the width dimension of the ramp transition section 12 is 1.5mm), and G can be, but is not limited to, 4.

[0051] Alternatively, the profile of the lower slope surface 122 satisfies the following function: in, This is the maximum height of the slope transition section 12 (i.e., the maximum height of the upper slope surface 121). Let be the width of the ramp transition section 12, and m be the third velocity variation constant. The coordinates of the horizontal position within the cross-section of the lower sloping surface 122, along the width direction of the substrate 10, from the lower starting end 124 to the end end 125. The horizontal coordinates within the cross-section of the lower slope surface 122 The vertical height coordinates at the location. Among them, K can be, but is not limited to, 1.5mm (that is, the maximum height of the ramp transition section 12 is 1.5mm), J can be, but is not limited to, 1.5mm (the width dimension of the ramp transition section 12 is 1.5mm), and m can be, but is not limited to, 5.

[0052] The specific contours of the upper slope surface 121 and the lower slope surface 122 are described below: To facilitate the definition of the contours, a coordinate system is established: the width direction of the heavy-duty scribing is x, the upper starting point 123 of the ramp transition section 12 is x=0, the end point 125 of the ramp transition section 12 is x=L (L is the width dimension of the ramp transition section 12, and the width direction is parallel to the horizontal ground), the direction perpendicular to the ground (i.e., the thickness direction of the main body 11) is y, and the ground (i.e., the lowest point of the ramp transition section 12) is y=0. The contour of the upper ramp surface 121 is y1 (x1), and the contour of the lower ramp surface 122 is y2 (x2).

[0053] refer to Figure 3 Example 1, the profile of the upper slope surface 121 is as follows: The profile of the lower slope surface 122 is as follows: refer to Figure 4 Example 2, the profile of the upper slope surface 121 is as follows: The profile of the lower slope surface 122 is as follows: refer to Figure 5 Example 3, the profile of the upper slope surface 121 is as follows: The profile of the lower slope surface 122 is as follows: In Example 1, the orientation of the profile of the upper slope surface 121 is as follows: from =0 (starting from 123) to =1.5 (end 125), height smoothly decreases from 1.1 mm to 0, at the upper starting end 123, At point =0: the slope (first derivative) is 0, and the curvature (second derivative) is 0. The orientation of the profile 122 on the downslope surface is: from... =0 (lower starting point 124) to =1.5 (end 125), height smoothly decreases from 0.48mm to 0mm at end 125. At 1.5: the slope is 0 and the curvature is 0.

[0054] The similarity between Example 1 and Example 2 is that both use the smoothstep function curve. Furthermore, the contours of the upper slope surface 121 in both examples are identical: A is 1.5mm, C is 1.1mm, and B is 0.40154. Of course, based on this basic function, by adjusting and adding conventional parameters and other fixed values, the surface profile curve of the upper slope can have more specific functions. Those skilled in the art can set them as needed, and this application does not impose specific limitations on this.

[0055] The difference between Example 2 and Example 1 is that, in the profile 122 on the lower slope surface, From 0.36 mm to 1.5 mm, not 0 to 1.5 mm. In The height of the lower slope surface 122 decreases from approximately 0.34 mm to 0 mm, from 0.36 mm to 1.5 mm. It should be noted that within the range of 0 to 0.36 mm, the lower surface of the main body 11 can smoothly transition with the lower slope surface 122 through a chamfer, but is not limited to this.

[0056] In Example 1, the fundamental function for the lower slope surface 122 is: Where D is 0.48 mm and E is 1 mm, to obtain the lower slope surface 122 in Example 1.

[0057] In Example 2, the fundamental function of the lower slope surface 122 is: Where F is 1.5 mm and G is 4, to obtain the lower slope surface 122 in Example 2.

[0058] Example 3 uses a power function curve class, and the direction of the contour 121 on the upper slope surface is: from =0 (starting from 123) to =1.5 (end 125), height smoothly decreases from 1.5mm to 0, at the upper starting end 123, =0: Slope (first derivative) is 0, curvature (second derivative) is 0. The orientation of the profile 122 on the downslope surface is as follows: from... =0.36 (lower starting point 124) to =1.5 (end 125), height smoothly decreases from approximately 0.38mm to 0 at end 125. At x = 1.5, the slope is 0 and the curvature is 0. Furthermore, within the range of x from 0 to 0.36 mm, the lower surface of the main body 11 can smoothly transition with the lower slope surface 122 through a chamfer, but is not limited thereto.

[0059] In Example 3, the fundamental function of the upper slope surface 121 is: H is 1.5 mm, I is 1.5 mm, and n is 5, to obtain the upper slope surface 121 of Example 3.

[0060] The fundamental function of the lower slope surface 122 is: K is 1.5 mm, J is 1.5 mm, and m is 5, to obtain the lower slope surface 122 of Example 3.

[0061] Similarly, by adjusting or adding fixed values ​​such as conventional parameters, the contour curves of the upper slope surface 121 and the lower slope surface 122 can have more power function curve categories. Those skilled in the art can set them as needed, without making specific restrictions.

[0062] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A heavy-duty marking sticker, characterized in that, include: The substrate includes a main body and two sloping transition portions. Along the width direction of the substrate, the main body is located between the two sloping transition portions and is connected to each of the two sloping transition portions. The sloping transition portions are used to abut against the ground and have an upper sloping surface. An adhesive layer is provided on the lower surface of the main body for bonding with the ground; The upper slope surface is an arc-shaped curved surface, which includes an upper starting end and an upper ending end. The upper slope surface extends obliquely downward in the direction from the upper starting end to the upper ending end. At the upper starting end, the upper slope surface is tangent to the upper surface of the main body.

2. The heavy-duty marking sticker according to claim 1, characterized in that, At the upper starting end, the curvature of the upper slope surface is 0.

3. The heavy-duty marking sticker according to claim 1, characterized in that, In the direction from the upper starting end to the upper ending end, the slope of the upper ramp surface gradually increases; And / or, the upper slope surface is a curved surface with continuously varying curvature.

4. The heavy-duty marking sticker according to claim 1, characterized in that, The profile of the cross-section of the upper slope surface is a smoothstep function curve or a power function curve.

5. The heavy-duty marking sticker according to claim 4, characterized in that, The profile of the cross-section of the upper slope surface satisfies the following function: ； in, The width of the slope transition section. Scaling factor This is the maximum height of the upper slope surface. The coordinates of the horizontal position within the cross-section of the upper sloping surface, along the width direction of the substrate, pointing from the upper starting end to the lower end. The horizontal coordinates within the cross-section of the upper slope surface Vertical height coordinates at the location; Alternatively, the profile of the cross-section of the upper slope surface satisfies the following function: ； in, This is the maximum height of the upper slope surface. The width of the upper slope surface. The first velocity variation constant, The coordinates of the horizontal position within the cross-section of the upper sloping surface, along the width direction of the substrate, pointing from the upper starting end to the lower end. The horizontal coordinates within the cross-section of the upper slope surface The vertical height coordinates at the location.

6. The heavy-duty marking sticker according to any one of claims 1 to 5, characterized in that, The slope transition section has a lower slope surface, which is an arc-shaped curved surface. The lower slope surface includes a lower starting end and an end end. In the direction from the lower starting end to the end end, the lower slope surface extends obliquely downward. At the end end, the slope of the lower slope surface is 0.

7. The heavy-duty marking sticker according to claim 6, characterized in that, At the end, the curvature of the lower slope surface is 0; And / or, the lower slope surface is a curved surface with continuously varying curvature.

8. The heavy-duty marking sticker according to claim 6, characterized in that, A buffer cavity is formed between the lower slope surface and the ground. The lower slope surface is a curved surface with a continuously changing slope, so that the contour of the buffer cavity changes continuously.

9. The heavy-duty marking sticker according to claim 6, characterized in that, The profile of the cross-section of the lower slope surface is a smoothstep function curve or a power function curve.

10. The heavy-duty marking sticker according to claim 9, characterized in that, The profile of the lower slope surface satisfies the following function: ； in, This represents the maximum height of the lower slope surface. The width of the slope transition section. The coordinates of the horizontal position along the width direction of the substrate within the cross-section of the lower slope surface, pointing from the lower starting end to the lower ending end. The horizontal coordinates within the cross-section of the lower slope surface Vertical height coordinates at the location; Alternatively, the profile of the lower slope surface satisfies the following function: ； in, The width of the slope transition section. The second velocity variation constant, The coordinates of the horizontal position along the width direction of the substrate within the cross-section of the lower slope surface, pointing from the lower starting end to the lower ending end. The horizontal coordinates within the cross-section of the lower slope surface Vertical height coordinates at the location; Alternatively, the profile of the lower slope surface satisfies the following function: ； in, This is the maximum height of the slope transition section. Where m is the width of the ramp transition section, and m is the third velocity variation constant. The coordinates of the horizontal position along the width direction of the substrate within the cross-section of the lower slope surface, pointing from the lower starting end to the lower ending end. The horizontal coordinates within the cross-section of the lower slope surface The vertical height coordinates at the location.

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