Asymmetrical packing belt

Abstract

The present invention breaks away from tradition and creatively installs a diagonal pattern set consisting of deep diagonal and shallow diagonal patterns inclined in different directions on the front and back of a packing belt, thereby improving the tensile strength of the packing belt under the condition of the same gram weight, and solving the problems existing in the existing technology. The asymmetric packing belt of the present invention has a front and a back, and further includes a diagonal pattern set (1), which includes deep diagonal patterns (11) inclined to one side and shallow diagonal patterns (12) inclined to the other side, where if the height of the diagonal patterns protruding from the packing belt surface is defined as h, the height of the deep diagonal patterns is h1 and the height of the shallow diagonal patterns is h2, with h1 > h2, and the diagonal pattern sets are installed on both the front and back.

Description

[Technical Field]

[0001] The present invention relates to the field of packing belts, in particular to the field of asymmetric packing belts. [Background technology]

[0002] Flat packing belts are a common type of packing material, generally made of polypropylene or polyester material for packing machines, with friction patterns applied to the front and back surfaces through a rolling process to increase their friction performance.

[0003] Currently, a diamond-shaped lattice design with four equal-height sides has been used as the friction pattern for packing belts for many years. Packing belts with this diamond-shaped lattice friction pattern have a certain degree of friction performance and tensile strength. With existing technology, increasing the tensile strength of packing belts generally requires using a packing belt with a higher gram weight. Currently, the industry has no desire or motivation to change the structure of packing belts. A higher gram weight packing belt requires more raw materials, which not only increases the cost of using packing belts but is also environmentally unfriendly.

[0004] The above-mentioned technical problems existing in the existing technology have become urgent issues that need to be resolved by engineers in this field. Summary of the Invention

[0005] The present invention breaks with tradition by placing an original set of diagonal patterns, consisting of deep diagonal patterns and shallow diagonal patterns inclined in different directions, on the front and back sides of the packing belt, thereby improving the tensile strength of the packing belt under the condition of the same gram weight, and discloses a method for solving the problems existing in the existing technology.

[0006] The present invention has a front and a back surface, and further includes a set of diagonal marks, the set of diagonal marks including a deep diagonal mark slanted to one side and a shallow diagonal mark slanted to the other side.

[0007] If the height of the diagonal markings protruding from the surface of the packing belt is defined as h, the height of the deep diagonal markings is h1, and the height of the shallow diagonal markings is h2, with h1 > h2.

[0008] An asymmetrical packing belt is provided in which the twill set is provided on both the front and back sides.

[0009] Preferably, adjacent deep diagonals are parallel to each other.

[0010] Preferably, the spacing between adjacent deep diagonals is the same.

[0011] Preferably, the above-mentioned range of 0.1 mm≦h1≦0.7 mm is satisfied.

[0012] Preferably, adjacent shallow diagonals are parallel to one another.

[0013] Preferably, the spacing between adjacent shallow diagonals is the same.

[0014] Preferably, the above-mentioned range 0.005 mm≦h2≦2 / 3h1 mm is satisfied.

[0015] Preferably, the deep and shallow diagonals have equal angles of inclination with respect to the vertical.

[0016] Preferably, adjacent deep diagonal marks are parallel to each other and have the same spacing, and adjacent shallow diagonal marks are parallel to each other and have the same spacing, and when viewed from the front projection, the included angle formed by the deep diagonal marks located on the front surface and the deep diagonal marks located on the rear surface is the same as the included angle formed by the shallow diagonal marks located on the front surface and the shallow diagonal marks located on the rear surface.

[0017] Preferably, adjacent deep diagonal patterns are parallel to each other and are equally spaced, and adjacent shallow diagonal patterns are parallel to each other and are equally spaced, and on the same plane, the deep diagonal patterns and shallow diagonal patterns form a diamond lattice.

[0018] The present invention provides an asymmetric packing belt having a front and a back surface, and further including a diagonal set, the diagonal set including deep diagonal lines slanting to one side and shallow diagonal lines slanting to the other side, where the height of the diagonal lines protruding from the packing belt surface is defined as h, the height of the deep diagonal lines is h1 and the height of the shallow diagonal lines is h2, where h1 > h2, and the diagonal set is provided on both the front and back surfaces. The asymmetric packing belt disclosed in the present invention breaks away from tradition by creatively providing diagonal sets consisting of deep diagonal lines and shallow diagonal lines slanting in different directions on the front and back surfaces of the packing belt, thereby solving problems existing in the existing technology. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 1 is a schematic diagram showing the production of a packaging belt by press working using the embossing roll of the present invention. [Figure 2] FIG. 2 is a schematic diagram of an embossing roll structure of the present invention. [Figure 3] FIG. 3 is a schematic diagram of the front structure of an asymmetric packing belt according to an embodiment of the present invention. [Figure 4] FIG. 4 is a schematic diagram of the rear structure of the asymmetric packing belt according to an embodiment of the present invention. [Figure 5] FIG. 5 is a schematic diagram of a front view of an asymmetrical packing belt according to an embodiment of the present invention, in double-sided projection. [Figure 6] FIG. 6 is a cross-sectional view of an asymmetric packing belt according to an embodiment of the present invention. [Figure 7] FIG. 7 is a SolidWorks simulation parameter diagram of the asymmetric packing belt according to the embodiment of the present invention. [Figure 8] FIG. 8 is a diagram showing the results of SolidWorks stress values in the asymmetric packing belt of the embodiment of the present invention. [Figure 9] FIG. 9 is a diagram showing the result of SolidWorks displacement in the asymmetric packing belt according to the embodiment of the present invention. [Figure 10] FIG. 10 is a diagram showing the results of SolidWorks stress values in the asymmetric packing belt of the embodiment of the present invention. [Figure 11]Figure 11 shows the SolidWorks displacement results for the existing diamond lattice packing belt. In Figure 11, 001 is the upper embossing roll, 002 is the lower embossing roll, and 003 is the framework. DETAILED DESCRIPTION OF THE INVENTION

[0020] The asymmetric packing belt disclosed in the present invention breaks away from tradition by providing a unique set of diagonal patterns, consisting of deep and shallow diagonal patterns inclined in different directions, on the front and back sides of the packing belt, thereby improving the tensile strength of the packing belt under the same gram weight condition, thereby solving the problems existing in the existing technology.

[0021] The technical means in the embodiments of the present invention will be described in more detail below with reference to the drawings in the embodiments of the present invention. It should be apparent that the above embodiments are only some of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments that can be obtained by those skilled in the art without any creative effort are within the scope of protection of the present invention. As shown in Figures 1 to 11, the asymmetric packing belt of the present invention has a front and a back, and further includes a diagonal set 1, the diagonal set 1 including a deep diagonal set 11 inclined to one side and a shallow diagonal set 12 inclined to the other side, If the height of the diagonal markings protruding from the surface of the packing belt is defined as h, the height of the deep diagonal markings 11 is h1, and the height of the shallow diagonal markings 12 is h2, and h1>h2. The diagonal marking set 1 is installed on both the front and back surfaces.

[0022] Before describing the embodiments of the present invention, we will first explain the manufacturing process of flat packing belts. Currently, flat packing belts are manufactured by pressing two opposing embossing rolls. As shown in Figures 1 and 2, the embossing rolls have recessed patterns, which are used to press the diagonal patterns. Comparing the diagonal pattern set of the present invention with the diamond-shaped packing belt, even if the thickness of the two types of flat packing belt bodies, the diagonal inclination angle, and the diagonal spacing are all the same during manufacturing, the patterns and diagonal heights of the two types of flat packing belts are different. Therefore, when the weight of the material before diagonal pressing is the same, the sum of the heights of the diagonal patterns of the diagonal pattern set of the flat packing belt is equal to the sum of the heights of the raised ribs inclined in both directions of the diamond-shaped pattern.

[0023] The embodiment of the present invention breaks away from the conventional thinking of the industry, that is, in the flat packing belt used in the industry with a diamond lattice pattern with four sides of the same height, a diagonal pattern set 1 consisting of deep diagonal patterns 11 and shallow diagonal patterns 12 is innovatively used, which achieves better performance under the condition that the material weight is the same. Below, the improvement of the properties of the asymmetric packing belt of the present invention will be explained from three aspects.

[0024] 1. Principle: If the height of the diagonal stripe is changed without changing the structure of the packing belt, the tensile strength of the packing belt will be improved, provided that the force applied to both ends of the packing belt does not exceed the design range. However, more raw material will be used. Changing the structure of the packing belt to include a diagonal stripe on the front or back side significantly reduces the frictional performance of the packing belt. However, the present invention achieves a balance between tensile strength and frictional performance, meeting the frictional performance requirements while maximizing tensile strength. As shown in Figures 3 to 6, the asymmetric packing belt of the present invention uses a diagonal stripe set. The deep diagonal stripe 11 and shallow diagonal stripe 12 form a grid, which can be a diamond or parallelogram, ensuring sufficient frictional performance of the packing belt. The shallow diagonal stripe 12 is usually lower than the diagonal stripe in a diamond grid. The material saved by reducing the height of the shallow diagonal stripe 12 is used to increase the height of the deep diagonal stripe 11. Increasing the height of the deep diagonal stripe 11 significantly improves tensile strength. Roughly speaking, under the condition that the friction performance meets the requirements, the tensile strength of the packing belt can be increased by 5% to 20%. What I would like to explain here is that it is quite difficult to improve the performance of packing belts under the same gram weight conditions. Especially in today's world where environmentally friendly ideas are becoming more and more prevalent, even a small improvement in the performance of packing belts under the same gram weight conditions is extremely important.

[0025] 2. Simulation Analysis: Here, a simulation analysis of the flat packing belt performance was performed using SolidWorks software. As shown in Figures 7 to 10, the drawings show an asymmetric packing belt according to an embodiment of the present invention and a diamond-shaped lattice packing belt according to the prior art. Even if the body thickness of both belts is set to 0.2 mm, and the diagonal inclination angle and spacing are set to the same, the patterns of the two packing belts are different, and the heights of the diagonal patterns are different. Therefore, under the condition that the material weight of the flat packing belt before diagonal pressing is the same, when h1 = 0.2 mm and h2 = 0.02 mm are set for the asymmetric packing belt according to the present invention, the diamond-shaped lattice pattern height h3 *2 = 0.2 + 0.02, or h3 = 0.11 mm. When simulating the performance of the packing belt using SolidWorks, the material properties of the packing belt were first set, as shown in Figure 7. Next, a 20 mm long asymmetric packing belt was cut, clipped 1 mm apart on each end, and one end was fixed while a 50 N force was applied to the other end. The resulting stress value was 4.137e+007 and the variation was 2.116e-001. Next, a 20 mm long diamond-shaped packing belt was cut, clipped 1 mm apart on each end, and one end was fixed while a 50 N force was applied to the other end. The resulting stress value was 5.196e+007 and the variation was 2.155e-001. In other words, under the same force conditions, the asymmetric packing belt had a smaller stress value and deformation. Under all conditions being the same, by simply changing the height of the diagonal stripes, the stress and deformation generated in the packing belt can be changed, and the performance of the asymmetric packing belt is significantly superior to that of the diamond grid packing belt.

[0026] 3. Analysis of actual experimental data: The present invention selects four frequently used packing belts for testing, and their sizes are 11 * 0.4 and 2 g / m, 11 * 0.45 and 2.2 g / m, 11 * 0.5 and 2.5 g / m, 13.5 * 0.6 and 4.5 g / m.

[0027] 3. Analysis of actual experimental data: The present invention selects four frequently used packing belts for testing, and their sizes are 11 * 0.4 and 2 g / m, 11 * 0.45 and 2.2 g / m, 11 * 0.5 and 2.5 g / m, 13.5 * 0.6 and 4.5 g / m.

[0028] Size 11 * Tests at 0.4 and 2g / m: First, the four sizes are 11 *A diamond grid packing belt with a density of 0.4 (2 g / m) was selected for testing. That is, number 1, number 2, number 3 and number 4: 1. Cut 5m of No. 1 and measure its weight. The weight is 10.02g, with an average value of 2.004g / m. 2. Cut 5m of No. 2 and weigh it. The weight is 10.09g, with an average value of 2.018g / m. 3. Cut 5m of No. 3 and weigh it. The weight is 10.04g, with an average value of 2.008g / m. 4. Cut a 5m piece of number 4 and weigh it. Its weight is 10.1g, with an average weight of 2.02g. This gives the following data: [Table 1]

[0029] Continued, 4 size 11 * An asymmetric packing belt with a density of 0.4 (2g / m) and h2 = 0.02mm was selected for testing. That is, number 1, number 2, number 3 and number 4: 1. Cut 5m of No. 1 and weigh it. The weight is 10.19g, with an average value of 2.038g / m. 2. Cut 5m of No. 2 and weigh it. The weight is 9.95g, with an average value of 1.99g / m. 3. Cut 5m of number 3 and weigh it. The weight is 9.84g, with an average value of 1.968g / m. 4. Cut 5m of No. 4 and weigh it. The weight is 9.64g, with an average value of 1.928g / m. This gives the following data: [Table 2]

[0030] Then, four size 11 *An asymmetric packing belt with a density of 0.4 (2g / m) and h2 = 0.04mm is selected for testing. That is, number 1, number 2, number 3 and number 4: 1. Cut 5m of No. 1 and measure its weight. Its weight is 10g, with an average value of 2g / m. 2. Cut 5m of number 2 and measure its weight. Its weight is 10g, with an average value of 2g / m. 3. Cut 5m of No. 3 and measure its weight. The weight is 10.2g, with an average value of 2.04g / m. 4. Cut 5m of No. 4 and weigh it. The weight is 10.35g, with an average value of 2.07g / m. This gives the following data: [Table 3]

[0031] Finally, comparing the experimental data, the asymmetric packing belt of the present invention has a tensile strength that is approximately 6.8% to 13.2% higher than that of the conventional diamond lattice packing belt. Although the performance of the asymmetric packing belt changes with changes in h2, the tensile strength of both belts is superior to that of the conventional diamond lattice packing belt.

[0032] Size 11 * Tests at 0.45 and 2.2g / m: First, the four sizes are 11 * A diamond grid packing belt with a density of 0.45 (2.2 g / m) was selected for testing. That is, number 1, number 2, number 3 and number 4: 1. Cut 5m of No. 1 and weigh it. The weight is 11g, with an average value of 2.2g / m. 2. Cut 5m of No. 2 and weigh it. The weight is 11.01g, with an average value of 2.202g / m. 3. Cut 5m of number 3 and weigh it. The weight is 11.09g, with an average value of 2.218g / m. 4. Cut 5m of No. 4 and weigh it. The weight is 10.95g, with an average value of 2.19g / m. This gives the following data: [Table 4]

[0033] Then, four size 11 * An asymmetric packing belt with a density of 0.45 (2.2g / m) and h2 = 0.04mm is selected for testing. That is, number 1, number 2, number 3 and number 4: 1. Cut 5m of No. 1 and weigh it. The weight is 11.45g, with an average value of 2.29g / m. 2. Cut 5m of No. 2 and measure its weight. Its weight is 11g, with an average value of 2.2g / m. 3. Cut 5m of No. 3 and weigh it. The weight is 11.4g, with an average value of 2.28g / m. 4. Cut 5m of No. 4 and weigh it. The weight is 11.75g, with an average value of 2.35g / m. This gives the following data: [Table 5]

[0034] Continued, 4 size 11 * An asymmetric packing belt with a density of 0.45 (2.2 g / m) and h2 = 0.15 mm is selected for testing. That is, number 1, number 2, number 3 and number 4: 1. Cut 5m of No. 1 and weigh it. The weight is 10.62g, with an average value of 2.124g / m. 2. Cut 5m of No. 2 and weigh it. The weight is 10.76g, with an average value of 2.152g / m. 3. Cut 5m of No. 3 and weigh it. The weight is 10.8g, with an average value of 2.16g / m. 4. Cut 5m of No. 4 and measure its weight. The weight is 10.7g, with an average value of 2.14g / m. This gives the following data: [Table 6]

[0035] Finally, comparing the experimental data, the asymmetric packing belt of the present invention has a tensile strength that is approximately 5% to 16.1% higher than that of the conventional diamond lattice packing belt. Although the performance of the asymmetric packing belt changes with changes in h2, the tensile strength of both belts is superior to that of the conventional diamond lattice packing belt.

[0036] Size 11 * Tests at 0.5 and 2.5g / m: First, the four sizes are 11 * A diamond grid packing belt with a density of 0.5 (2.5 g / m) was selected for testing. That is, number 1, number 2, number 3 and number 4: 1. Cut 5m of No. 1 and weigh it. The weight is 12.75g, with an average value of 2.55g / m. 2. Cut 5m of No. 2 and weigh it. The weight is 12.5g, with an average value of 2.5g / m. 3. Cut 5m of number 3 and weigh it. The weight is 12.55g, with an average value of 2.518g / m. 4. Cut 5m of No. 4 and weigh it. The weight is 12.65g, with an average value of 2.53g / m. This gives the following data: [Table 7]

[0037] Continued, 4 size 11 * An asymmetric packing belt with a density of 0.5 (2.5g / m) and h2 = 0.02mm is selected for testing. That is, number 1, number 2, number 3 and number 4: 1. Cut 5m of No. 1 and weigh it. The weight is 12.33g, with an average value of 2.466g / m. 2. Cut 5m of No. 2 and weigh it. The weight is 12.43g, with an average value of 2.486g / m. 3. Cut 5m of No. 3 and weigh it. The weight is 13.2g, with an average value of 2.64g / m. 4. Cut 5m of No. 4 and weigh it. The weight is 12.99g, with an average value of 2.598g / m. This gives the following data: [Table 8]

[0038] Then, four size 11 * An asymmetric packing belt with a density of 0.5 (2.5g / m) and h2 = 0.04mm is selected for testing. That is, number 1, number 2, number 3 and number 4: 1. Cut 5m of No. 1 and weigh it. The weight is 12.65g, with an average value of 2.53g / m. 2. Cut 5m of No. 2 and weigh it. The weight is 12.58g, with an average value of 2.516g / m. 3. Cut 5m of No. 3 and weigh it. The weight is 12.9g, with an average value of 2.58g / m. 4. Cut 5m of No. 4 and weigh it. The weight is 12.8g, with an average value of 2.56g / m. This gives the following data: [Table 9]

[0039] Continued, 4 size 11 * An asymmetric packing belt with a density of 0.5 (2.5g / m) and h2 = 0.15mm is selected for testing. That is, number 1, number 2, number 3 and number 4: 1. Cut 5m of No. 1 and weigh it. The weight is 12.78g, with an average value of 2.556g / m. 2. Cut 5m of No. 2 and weigh it. The weight is 12.87g, with an average value of 2.574g / m. 3. Cut 5m of number 3 and weigh it. The weight is 12.99g, with an average value of 2.598g / m. 4. Cut 5m of No. 4 and weigh it. The weight is 12.3g, with an average value of 2.46g / m. This gives the following data: [Table 10]

[0040] Finally, comparing the experimental data, the tensile strength of the asymmetric packing belt of the present invention is improved by about 6.5% to 20% compared to the conventional diamond grid packing belt. Of these, the performance improvement of the asymmetric packing belt with h2 = 0.04 mm is particularly remarkable, improving by about 18%. The performance of the asymmetric packing belt also changes with the change in h2, but the tensile strength of all the asymmetric packing belts is superior to that of the conventional diamond grid packing belt.

[0041] Size 13.5 * Tests at 0.6 and 4.5g / m: First, the four sizes are 13.5 * A diamond grid packing belt with a density of 0.6 (4.5 g / m) was selected for testing. That is, number 1, number 2, number 3 and number 4: 1. Cut 5m of No. 1 and weigh it. The weight is 22.55g, with an average value of 4.51g / m. 2. Cut 5m of No. 2 and weigh it. The weight is 22.5g, with an average value of 4.5g / m. 3. Cut 5m of No. 3 and weigh it. The weight is 22.4g, with an average value of 4.48g / m. 4. Cut 5m of No. 4 and measure its weight. The weight is 23g, with an average value of 4.6g / m. This gives the following data: [Table 11]

[0042] Continued, 4 size 13.5 * An asymmetric packing belt with a density of 0.6 (4.5g / m) and h2 = 0.04mm is selected for testing. That is, number 1, number 2, number 3 and number 4: 1. Cut 5m of No. 1 and weigh it. The weight is 22.93g, with an average value of 4.586g / m. 2. Cut 5m of No. 2 and weigh it. The weight is 23.19g, with an average value of 4.638g / m. 3. Cut 5m of number 3 and weigh it. The weight is 22.86g, with an average value of 4.572g / m. 4. Cut 5m of No. 4 and measure its weight. The weight is 23.3g, with an average value of 4.66g / m. This gives the following data: [Table 12]

[0043] Finally, comparing the experimental data, the tensile strength of the asymmetric packing belt of the present invention was improved by approximately 8% to 11.3% compared to the conventional diamond lattice packing belt. Although the performance of the asymmetric packing belt changed with the change in h2, the tensile strength of both belts was superior to that of the conventional diamond lattice packing belt.

[0044] Through the analysis of the above actual experimental data, it has been found that the asymmetric packing belt of the present invention has a significantly improved tensile strength compared to the conventional diamond lattice packing belt, with some sizes being improved by as much as 20%, and this has been achieved without changing the gram weight of the material, which is of great significance and practical value.

[0045] Preferably, adjacent deep diagonals 11 are parallel to each other.

[0046] It should be noted that adjacent deep diagonal marks 11 may or may not be parallel to each other, but in practical applications, adjacent deep diagonal marks 11 are often parallel to each other for the convenience of manufacturing.

[0047] Preferably, the spacing between adjacent deep diagonal marks 11 is the same.

[0048] Preferably, the above-mentioned range of 0.1 mm≦h1≦0.7 mm is satisfied.

[0049] The above h1 range is a relatively good data range obtained through testing, and the data range is not limited here.

[0050] Preferably, adjacent shallow diagonals 12 are parallel to each other.

[0051] It should be noted that adjacent shallow diagonals 12 may or may not be parallel to each other, but in practical applications, adjacent shallow diagonals 12 are often parallel to each other for convenience of manufacturing.

[0052] Preferably, the spacing between adjacent shallow diagonals 12 is the same.

[0053] Preferably, the above-mentioned range of 0.005≦h2≦2 / 3h1 mm is satisfied.

[0054] The above h2 range is a relatively good data range obtained through testing, and the data range is not limited here.

[0055] Preferably, the deep diagonal lines 11 and the shallow diagonal lines 12 have the same inclination angle with respect to the vertical direction.

[0056] Under these circumstances, the deep diagonal mark 11 and the shallow diagonal mark 12 form a parallelogram.

[0057] Preferably, adjacent deep diagonal marks 11 are parallel to each other and are equally spaced apart. Adjacent shallow diagonal marks 12 are parallel to each other and are equally spaced apart. When viewed from the front projection, the included angle formed by the deep diagonal marks 11 located on the front side and the deep diagonal marks 11 located on the rear side is the same as the included angle formed by the shallow diagonal marks 12 located on the front side and the shallow diagonal marks 12 located on the rear side.

[0058] Preferably, adjacent deep diagonal patterns 11 are parallel to each other and have the same spacing. Adjacent shallow diagonal patterns 12 are parallel to each other and have the same spacing. On the same plane, the deep diagonal patterns 11 and the shallow diagonal patterns 12 form a diamond lattice.

[0059] The asymmetric packing belt provided by the present invention has a front and a back, and further includes a diagonal pattern set 1. The diagonal pattern set 1 includes a deep diagonal pattern 11 inclined to one side and a shallow diagonal pattern 12 inclined to the other side. If the height of the diagonal pattern protruding from the surface of the packing belt is defined as h, the height of the deep diagonal pattern 11 is h1, and the height of the shallow diagonal pattern 12 is h2, with h1 > h2. The diagonal pattern sets 1 are installed on both the front and back. Breaking with tradition, the present invention creatively designs diagonal patterns 1 consisting of deep diagonal patterns 11 and shallow diagonal patterns 12 inclined in different directions, and discloses an asymmetric packing belt in which the diagonal patterns are installed on the front and back of the packing belt. This design improves the tensile strength of the packing belt under the same gram weight, solving problems existing in the prior art.

[0060] Although the asymmetrical packing belt, modular framework and upright packing machine provided by the present invention have been described in detail above, those skilled in the art can make improvements and modifications to the specific embodiments and application scope based on the ideas of the embodiments of the present invention, and the contents of this specification should not be construed as limiting the present invention.

Claims

1. The sheet has a front surface and a back surface, and further includes a diagonal pattern set, the diagonal pattern set including a deep diagonal pattern inclined to one side and a shallow diagonal pattern inclined to the other side; If the height of the diagonal markings protruding from the surface of the packing belt is defined as h, the height of the deep diagonal markings is h １ , the height of the shallow diagonal is h ２ And h １ >h ２ and An asymmetric packing belt, characterized in that both the front and back surfaces are provided with the set of diagonal patterns.

2. 2. The asymmetric packing belt of claim 1, wherein adjacent deep diagonals are parallel to one another.

3. 3. The asymmetric packing belt of claim 2, wherein the spacing between adjacent deep diagonals is the same.

4. The 0.1 mm≦h １ 4. Asymmetric packing belt according to claim 3, characterized in that the thickness is ≦0.7 mm.

5. 5. The asymmetric packing belt according to claim 1, wherein adjacent shallow diagonals are parallel to each other.

6. 6. The asymmetric packing belt of claim 5, wherein the spacing between adjacent shallow diagonals is the same.

7. The above 0.005 mm≦h ２ ≦2 / 3h １ 7. The asymmetric packing belt according to claim 6, characterized in that the width is 1 / 2 mm.

8. 7. The asymmetric packing belt according to claim 6, wherein the deep diagonal and shallow diagonal have the same inclination angle with respect to the vertical direction.

9. adjacent deep diagonals are parallel to one another and equally spaced; adjacent shallow diagonals are parallel to one another and equally spaced; 2. The asymmetric packing belt according to claim 1, wherein, when viewed from the front projection, the included angle formed by the deep diagonal pattern on the front surface and the deep diagonal pattern on the back surface is the same as the included angle formed by the shallow diagonal pattern on the front surface and the shallow diagonal pattern on the back surface.

10. Adjacent deep diagonals are parallel to each other and equally spaced; adjacent shallow diagonals are parallel to one another and equally spaced; 2. The asymmetric packing belt according to claim 1, wherein the deep diagonal patterns and shallow diagonal patterns form a diamond lattice pattern on the same plane.

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